/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/array-industry-pattern/check_removal_from_set_after_insertion.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:59:22,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:59:22,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:59:22,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:59:22,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:59:22,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:59:22,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:59:22,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:59:22,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:59:22,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:59:22,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:59:22,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:59:22,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:59:22,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:59:22,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:59:22,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:59:22,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:59:22,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:59:22,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:59:22,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:59:22,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:59:22,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:59:22,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:59:22,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:59:22,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:59:22,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:59:22,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:59:22,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:59:22,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:59:22,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:59:22,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:59:22,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:59:22,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:59:22,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:59:22,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:59:22,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:59:22,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:59:22,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:59:22,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:59:22,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:59:22,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:59:22,867 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 23:59:22,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:59:22,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:59:22,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:59:22,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:59:22,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:59:22,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:59:22,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:59:22,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:59:22,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:59:22,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:59:22,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:59:22,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:59:22,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:59:22,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:59:22,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:59:22,912 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:59:22,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:59:22,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:59:22,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:59:22,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:59:22,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:59:22,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:59:22,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:59:22,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:59:22,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:59:22,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:59:22,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:59:22,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:59:22,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:59:22,915 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:59:23,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:59:23,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:59:23,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:59:23,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:59:23,226 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:59:23,227 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion.c [2020-10-13 23:59:23,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2af7b47e1/01e2208dbead4591978ffef5f6dfb24f/FLAGc8767f11d [2020-10-13 23:59:23,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:59:23,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion.c [2020-10-13 23:59:23,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2af7b47e1/01e2208dbead4591978ffef5f6dfb24f/FLAGc8767f11d [2020-10-13 23:59:24,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2af7b47e1/01e2208dbead4591978ffef5f6dfb24f [2020-10-13 23:59:24,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:59:24,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:59:24,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:59:24,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:59:24,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:59:24,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd1f025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24, skipping insertion in model container [2020-10-13 23:59:24,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:59:24,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:59:24,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:59:24,440 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:59:24,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:59:24,571 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:59:24,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24 WrapperNode [2020-10-13 23:59:24,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:59:24,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:59:24,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:59:24,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:59:24,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (1/1) ... [2020-10-13 23:59:24,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:59:24,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:59:24,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:59:24,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:59:24,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (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 23:59:24,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:59:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:59:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:59:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-10-13 23:59:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-10-13 23:59:24,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:59:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:59:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:59:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:59:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-10-13 23:59:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:59:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-10-13 23:59:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:59:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:59:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:59:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:59:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:59:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:59:25,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:59:25,089 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-13 23:59:25,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:59:25 BoogieIcfgContainer [2020-10-13 23:59:25,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:59:25,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:59:25,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:59:25,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:59:25,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:59:24" (1/3) ... [2020-10-13 23:59:25,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca9c0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:59:25, skipping insertion in model container [2020-10-13 23:59:25,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:59:24" (2/3) ... [2020-10-13 23:59:25,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca9c0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:59:25, skipping insertion in model container [2020-10-13 23:59:25,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:59:25" (3/3) ... [2020-10-13 23:59:25,101 INFO L109 eAbstractionObserver]: Analyzing ICFG check_removal_from_set_after_insertion.c [2020-10-13 23:59:25,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:59:25,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:59:25,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:59:25,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:59:25,171 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:59:25,172 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:59:25,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:59:25,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:59:25,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:59:25,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:59:25,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:59:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-13 23:59:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 23:59:25,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:25,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:25,199 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:25,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1521704262, now seen corresponding path program 1 times [2020-10-13 23:59:25,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:25,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464764647] [2020-10-13 23:59:25,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:25,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:25,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:59:25,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:59:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-13 23:59:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:25,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 23:59:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:59:25,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:25,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:25,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:25,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:25,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:59:25,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:25,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:25,905 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 23:59:25,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464764647] [2020-10-13 23:59:25,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:59:25,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:59:25,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463390963] [2020-10-13 23:59:25,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:59:25,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:25,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:59:25,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:59:25,933 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-10-13 23:59:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:26,071 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2020-10-13 23:59:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:59:26,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-13 23:59:26,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:26,083 INFO L225 Difference]: With dead ends: 90 [2020-10-13 23:59:26,083 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:59:26,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:59:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:59:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 23:59:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:59:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 23:59:26,134 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 18 [2020-10-13 23:59:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:26,134 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 23:59:26,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:59:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 23:59:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 23:59:26,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:26,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:59:26,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:59:26,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:26,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:26,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1816604960, now seen corresponding path program 1 times [2020-10-13 23:59:26,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:26,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010844214] [2020-10-13 23:59:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:26,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:26,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:59:26,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:59:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-13 23:59:26,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:26,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:26,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:59:26,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:26,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:26,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:26,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:26,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:26,773 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 23:59:26,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010844214] [2020-10-13 23:59:26,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:59:26,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:59:26,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613661090] [2020-10-13 23:59:26,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:59:26,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:26,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:59:26,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:59:26,782 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2020-10-13 23:59:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:26,958 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-10-13 23:59:26,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:59:26,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-13 23:59:26,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:26,960 INFO L225 Difference]: With dead ends: 62 [2020-10-13 23:59:26,960 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 23:59:26,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:59:26,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 23:59:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-13 23:59:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:59:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-10-13 23:59:26,972 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 18 [2020-10-13 23:59:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:26,972 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-10-13 23:59:26,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:59:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-10-13 23:59:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 23:59:26,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:26,974 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] [2020-10-13 23:59:26,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:59:26,974 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:26,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:26,975 INFO L82 PathProgramCache]: Analyzing trace with hash 470696214, now seen corresponding path program 1 times [2020-10-13 23:59:26,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:26,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102645346] [2020-10-13 23:59:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:26,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:27,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 23:59:27,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:59:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-10-13 23:59:27,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:27,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:27,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:27,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:59:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:59:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:27,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:27,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:27,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:27,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:27,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:27,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:27,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:59:27,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102645346] [2020-10-13 23:59:27,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:59:27,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:59:27,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009318741] [2020-10-13 23:59:27,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:59:27,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:27,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:59:27,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:59:27,835 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 4 states. [2020-10-13 23:59:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:27,974 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2020-10-13 23:59:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:59:27,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-13 23:59:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:27,976 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:59:27,976 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:59:27,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:59:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:59:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-13 23:59:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 23:59:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-13 23:59:27,985 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 21 [2020-10-13 23:59:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:27,986 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-13 23:59:27,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:59:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-13 23:59:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 23:59:27,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:27,987 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] [2020-10-13 23:59:27,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:59:27,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:27,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1871306430, now seen corresponding path program 1 times [2020-10-13 23:59:27,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:27,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391995816] [2020-10-13 23:59:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:28,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:28,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:59:28,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:59:28,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-10-13 23:59:28,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:28,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:28,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:59:28,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:59:28,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:59:28,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:28,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:28,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:28,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:28,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:28,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:28,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:59:28,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391995816] [2020-10-13 23:59:28,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:59:28,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 23:59:28,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691677354] [2020-10-13 23:59:28,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:59:28,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:28,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:59:28,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:28,862 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 6 states. [2020-10-13 23:59:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:29,146 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2020-10-13 23:59:29,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:59:29,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-13 23:59:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:29,150 INFO L225 Difference]: With dead ends: 95 [2020-10-13 23:59:29,150 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:59:29,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:59:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:59:29,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-10-13 23:59:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:59:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-13 23:59:29,163 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 22 [2020-10-13 23:59:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:29,164 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-13 23:59:29,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:59:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-13 23:59:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 23:59:29,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:29,165 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] [2020-10-13 23:59:29,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:59:29,166 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:29,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1487912228, now seen corresponding path program 1 times [2020-10-13 23:59:29,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:29,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667016942] [2020-10-13 23:59:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:29,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:29,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:31,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:59:31,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:59:31,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-10-13 23:59:31,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:31,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:59:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 23:59:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:59:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:31,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:31,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:31,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:59:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:31,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:59:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:59:31,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667016942] [2020-10-13 23:59:31,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:59:31,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:59:31,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291339018] [2020-10-13 23:59:31,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:59:31,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:31,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:59:31,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:59:31,243 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-10-13 23:59:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:31,461 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2020-10-13 23:59:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:59:31,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-13 23:59:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:31,463 INFO L225 Difference]: With dead ends: 74 [2020-10-13 23:59:31,463 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:59:31,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:59:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-10-13 23:59:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-13 23:59:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-13 23:59:31,473 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 24 [2020-10-13 23:59:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:31,474 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-13 23:59:31,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:59:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-13 23:59:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 23:59:31,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:31,475 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] [2020-10-13 23:59:31,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:59:31,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:31,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1655484526, now seen corresponding path program 1 times [2020-10-13 23:59:31,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:31,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424945252] [2020-10-13 23:59:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:35,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:35,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:59:35,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 23:59:35,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3671 [2020-10-13 23:59:35,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:35,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:59:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 23:59:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:59:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:35,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:35,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:35,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:35,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:35,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:59:35,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:35,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:59:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:35,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:59:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:35,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:35,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:59:35,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:35,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:59:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:59:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:59:35,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424945252] [2020-10-13 23:59:35,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:35,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:59:35,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25830352] [2020-10-13 23:59:35,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:59:35,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:35,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:59:35,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:35,248 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-10-13 23:59:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:35,473 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2020-10-13 23:59:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:59:35,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-13 23:59:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:35,475 INFO L225 Difference]: With dead ends: 81 [2020-10-13 23:59:35,475 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 23:59:35,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:59:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 23:59:35,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-13 23:59:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:59:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-13 23:59:35,484 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 34 [2020-10-13 23:59:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:35,485 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-13 23:59:35,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:59:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-13 23:59:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 23:59:35,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:35,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:59:35,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:59:35,488 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:35,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1097961272, now seen corresponding path program 2 times [2020-10-13 23:59:35,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:35,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575418341] [2020-10-13 23:59:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:35,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 23:59:40,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 23:59:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:59:40,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:59:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 23:59:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:59:40,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:59:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:59:40,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:40,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:59:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:40,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:59:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:40,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:59:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:40,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:40,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:59:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:40,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 23:59:40,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575418341] [2020-10-13 23:59:40,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:40,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:59:40,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738384999] [2020-10-13 23:59:40,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:59:40,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:40,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:59:40,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:40,575 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-13 23:59:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:40,787 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2020-10-13 23:59:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:59:40,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 23:59:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:40,789 INFO L225 Difference]: With dead ends: 122 [2020-10-13 23:59:40,789 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:59:40,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:59:40,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:59:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2020-10-13 23:59:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 23:59:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-13 23:59:40,798 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 44 [2020-10-13 23:59:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:40,799 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-13 23:59:40,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:59:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-13 23:59:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:59:40,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:40,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:59:40,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:59:40,801 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:40,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1333906022, now seen corresponding path program 3 times [2020-10-13 23:59:40,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:40,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88360131] [2020-10-13 23:59:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:40,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:41,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:41,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:45,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:45,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 23:59:45,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:59:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:59:45,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:45,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:59:45,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:59:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 23:59:45,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:45,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:45,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:45,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:45,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:45,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:45,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:59:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:45,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:59:45,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:45,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:59:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:59:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:59:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:45,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:45,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:45,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:59:45,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:45,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:59:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:59:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 23:59:45,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88360131] [2020-10-13 23:59:45,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:59:45,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:59:45,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827640159] [2020-10-13 23:59:45,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:59:45,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:45,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:59:45,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:59:45,898 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 5 states. [2020-10-13 23:59:46,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:46,021 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2020-10-13 23:59:46,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:59:46,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-13 23:59:46,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:46,022 INFO L225 Difference]: With dead ends: 102 [2020-10-13 23:59:46,023 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 23:59:46,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:46,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 23:59:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-13 23:59:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:59:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2020-10-13 23:59:46,037 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 46 [2020-10-13 23:59:46,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:46,037 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2020-10-13 23:59:46,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:59:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2020-10-13 23:59:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:59:46,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:46,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:59:46,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:59:46,043 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1722014932, now seen corresponding path program 1 times [2020-10-13 23:59:46,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:46,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170183753] [2020-10-13 23:59:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:51,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 23:59:51,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 23:59:51,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:59:51,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:51,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:59:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 23:59:51,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 23:59:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:51,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:51,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:51,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:51,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:51,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:59:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:59:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:51,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:51,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:51,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:59:51,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:51,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:51,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:59:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:59:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:51,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:51,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:59:51,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:51,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:59:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 23:59:51,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170183753] [2020-10-13 23:59:51,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:51,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:59:51,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053089489] [2020-10-13 23:59:51,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:59:51,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:51,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:59:51,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:59:51,167 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand 6 states. [2020-10-13 23:59:51,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:51,374 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2020-10-13 23:59:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:59:51,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-13 23:59:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:51,376 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:59:51,376 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 23:59:51,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:59:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 23:59:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2020-10-13 23:59:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:59:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2020-10-13 23:59:51,389 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 46 [2020-10-13 23:59:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:51,392 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2020-10-13 23:59:51,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:59:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2020-10-13 23:59:51,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 23:59:51,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:51,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:59:51,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:59:51,397 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:51,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1733710134, now seen corresponding path program 1 times [2020-10-13 23:59:51,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:51,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728485901] [2020-10-13 23:59:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 23:59:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:59:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:59:56,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:56,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:59:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 23:59:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:59:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:59:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:56,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:59:56,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:56,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:59:56,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:56,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:59:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:59:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:56,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:59:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:56,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:59:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:59:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:59:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:59:56,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:59:56,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:59:56,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:59:56,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:59:56,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:59:56,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:59:56,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:59:56,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:59:56,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:59:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 23:59:56,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728485901] [2020-10-13 23:59:56,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:59:56,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:59:56,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856331428] [2020-10-13 23:59:56,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:59:56,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:59:56,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:59:56,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:59:56,491 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand 7 states. [2020-10-13 23:59:56,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:59:56,704 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions. [2020-10-13 23:59:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:59:56,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-13 23:59:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:59:56,706 INFO L225 Difference]: With dead ends: 112 [2020-10-13 23:59:56,706 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 23:59:56,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:59:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 23:59:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2020-10-13 23:59:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-13 23:59:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2020-10-13 23:59:56,723 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 48 [2020-10-13 23:59:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:59:56,724 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2020-10-13 23:59:56,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:59:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2020-10-13 23:59:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 23:59:56,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:59:56,728 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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 23:59:56,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:59:56,729 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:59:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:59:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash 2116199869, now seen corresponding path program 2 times [2020-10-13 23:59:56,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:59:56,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329644908] [2020-10-13 23:59:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:59:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:59:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:59:57,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:01,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:01,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:00:01,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:00:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:00:01,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:01,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:00:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:00:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:00:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:01,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:01,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:01,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:01,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:01,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:01,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:00:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:00:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 00:00:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:01,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:01,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:01,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:01,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:00:01,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:01,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:01,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:00:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:01,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:00:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:00:01,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:01,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:01,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:00:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:01,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:01,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:01,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:01,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:00:01,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:01,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:01,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:00:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:00:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:01,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 00:00:01,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329644908] [2020-10-14 00:00:01,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:00:01,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:00:01,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98270966] [2020-10-14 00:00:01,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:00:01,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:01,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:00:01,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:00:01,873 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand 6 states. [2020-10-14 00:00:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:02,053 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2020-10-14 00:00:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:00:02,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-14 00:00:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:02,058 INFO L225 Difference]: With dead ends: 144 [2020-10-14 00:00:02,058 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 00:00:02,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:00:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 00:00:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-14 00:00:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 00:00:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 96 transitions. [2020-10-14 00:00:02,069 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 96 transitions. Word has length 58 [2020-10-14 00:00:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:02,070 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 96 transitions. [2020-10-14 00:00:02,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:00:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 96 transitions. [2020-10-14 00:00:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 00:00:02,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:02,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:02,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:00:02,072 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:02,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1465643872, now seen corresponding path program 1 times [2020-10-14 00:00:02,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:02,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024492065] [2020-10-14 00:00:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:02,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:04,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:04,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:00:04,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:00:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2842 [2020-10-14 00:00:04,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:04,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:00:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:00:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:04,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:04,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:04,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:04,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 00:00:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:04,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:04,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:04,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:04,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:04,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:05,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:05,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:05,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:00:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:05,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:05,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:05,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:05,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:05,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:05,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 00:00:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:05,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:05,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:05,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:05,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:05,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:05,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:05,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:05,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:00:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:05,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:05,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:05,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:05,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 00:00:05,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024492065] [2020-10-14 00:00:05,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:05,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:00:05,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802113383] [2020-10-14 00:00:05,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:00:05,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:05,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:00:05,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:00:05,054 INFO L87 Difference]: Start difference. First operand 80 states and 96 transitions. Second operand 8 states. [2020-10-14 00:00:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:05,431 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2020-10-14 00:00:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:00:05,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-14 00:00:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:05,436 INFO L225 Difference]: With dead ends: 123 [2020-10-14 00:00:05,436 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 00:00:05,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:00:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 00:00:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2020-10-14 00:00:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 00:00:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-14 00:00:05,454 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 63 [2020-10-14 00:00:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:05,455 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-14 00:00:05,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:00:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-14 00:00:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 00:00:05,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:05,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:05,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:00:05,456 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:05,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1761687158, now seen corresponding path program 1 times [2020-10-14 00:00:05,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:05,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799919749] [2020-10-14 00:00:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:05,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:05,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:05,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:06,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:10,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:10,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 00:00:10,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:00:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:00:10,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:10,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:00:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:10,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 00:00:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:10,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:10,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:10,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:10,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:10,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:10,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:10,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:10,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 00:00:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:10,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:10,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:10,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:10,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:10,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:10,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:00:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:10,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:10,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:10,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:10,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:10,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:10,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:10,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:10,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 00:00:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:10,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:10,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:10,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:10,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:10,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:10,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:10,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:00:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:10,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:10,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:10,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:10,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:10,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:10,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:10,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 00:00:10,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799919749] [2020-10-14 00:00:10,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:10,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 00:00:10,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265169990] [2020-10-14 00:00:10,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:00:10,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:10,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:00:10,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:00:10,583 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 8 states. [2020-10-14 00:00:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:10,974 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2020-10-14 00:00:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:00:10,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-14 00:00:10,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:10,976 INFO L225 Difference]: With dead ends: 126 [2020-10-14 00:00:10,976 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 00:00:10,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:00:10,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 00:00:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 88. [2020-10-14 00:00:10,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 00:00:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2020-10-14 00:00:10,988 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 64 [2020-10-14 00:00:10,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:10,988 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2020-10-14 00:00:10,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:00:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2020-10-14 00:00:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 00:00:10,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:10,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:10,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:00:10,990 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:10,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:10,990 INFO L82 PathProgramCache]: Analyzing trace with hash -174257346, now seen corresponding path program 2 times [2020-10-14 00:00:10,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:10,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723307640] [2020-10-14 00:00:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:11,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3355 [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:00:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:14,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:14,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:14,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:14,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:14,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:14,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 00:00:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:14,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:14,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:14,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:14,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:14,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:00:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:14,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:14,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 00:00:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:14,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:14,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:00:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:14,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:14,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:14,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:14,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:14,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 00:00:14,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723307640] [2020-10-14 00:00:14,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:14,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:00:14,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013079540] [2020-10-14 00:00:14,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:00:14,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:14,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:00:14,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:14,460 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand 9 states. [2020-10-14 00:00:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:14,943 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2020-10-14 00:00:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:00:14,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-14 00:00:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:14,946 INFO L225 Difference]: With dead ends: 208 [2020-10-14 00:00:14,946 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 00:00:14,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:00:14,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 00:00:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 92. [2020-10-14 00:00:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 00:00:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2020-10-14 00:00:14,957 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 65 [2020-10-14 00:00:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:14,957 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2020-10-14 00:00:14,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:00:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2020-10-14 00:00:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 00:00:14,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:14,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:14,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:00:14,959 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash 29354102, now seen corresponding path program 1 times [2020-10-14 00:00:14,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:14,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135905039] [2020-10-14 00:00:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:15,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:16,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:16,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:17,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:19,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 00:00:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 00:00:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:00:19,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:19,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:00:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 00:00:19,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:20,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:20,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:20,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:20,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:00:20,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:20,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:20,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:20,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 00:00:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:20,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:20,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:20,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:20,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:20,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:20,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:20,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:20,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:00:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:20,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:20,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:20,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:20,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:20,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:00:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:20,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:20,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:20,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:20,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:20,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:20,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:00:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:20,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:20,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:20,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:20,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:20,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:20,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:20,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:20,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:20,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 00:00:20,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135905039] [2020-10-14 00:00:20,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:20,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:00:20,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874758875] [2020-10-14 00:00:20,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:00:20,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:20,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:00:20,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:20,083 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand 9 states. [2020-10-14 00:00:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:20,556 INFO L93 Difference]: Finished difference Result 144 states and 171 transitions. [2020-10-14 00:00:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:00:20,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-14 00:00:20,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:20,561 INFO L225 Difference]: With dead ends: 144 [2020-10-14 00:00:20,562 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 00:00:20,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:00:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 00:00:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2020-10-14 00:00:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 00:00:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2020-10-14 00:00:20,577 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 68 [2020-10-14 00:00:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:20,577 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2020-10-14 00:00:20,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:00:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2020-10-14 00:00:20,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 00:00:20,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:20,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:20,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:00:20,579 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:20,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:20,579 INFO L82 PathProgramCache]: Analyzing trace with hash -956160582, now seen corresponding path program 3 times [2020-10-14 00:00:20,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:20,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322410821] [2020-10-14 00:00:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:25,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:25,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 00:00:25,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:00:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:00:25,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:25,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:00:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:00:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:25,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:25,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:25,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:25,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:25,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:25,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:25,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:25,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 00:00:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:25,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:25,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:25,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:25,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:25,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:25,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:25,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:00:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:25,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:25,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:25,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:25,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:25,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:25,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:25,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:00:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:25,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:25,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:25,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:00:25,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:25,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:00:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:25,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:25,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:25,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:25,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:25,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:00:25,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:25,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 00:00:25,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322410821] [2020-10-14 00:00:25,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:25,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:00:25,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251095395] [2020-10-14 00:00:25,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:00:25,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:25,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:00:25,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:25,728 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand 10 states. [2020-10-14 00:00:26,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:26,448 INFO L93 Difference]: Finished difference Result 230 states and 277 transitions. [2020-10-14 00:00:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:00:26,448 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-14 00:00:26,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:26,450 INFO L225 Difference]: With dead ends: 230 [2020-10-14 00:00:26,450 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 00:00:26,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:00:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 00:00:26,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 96. [2020-10-14 00:00:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 00:00:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-10-14 00:00:26,476 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 69 [2020-10-14 00:00:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:26,476 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-10-14 00:00:26,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:00:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-10-14 00:00:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 00:00:26,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:26,478 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:26,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:00:26,478 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:26,478 INFO L82 PathProgramCache]: Analyzing trace with hash 720159038, now seen corresponding path program 2 times [2020-10-14 00:00:26,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:26,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857934565] [2020-10-14 00:00:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:26,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:26,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:26,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:31,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:31,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 00:00:31,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:00:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:00:31,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:31,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:00:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:00:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:31,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:31,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:31,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:31,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:31,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:31,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:31,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:31,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:00:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:31,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:31,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:31,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:31,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:31,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:00:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:31,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:31,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:31,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:31,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:31,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 00:00:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:31,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:31,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:00:31,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:31,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:31,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:00:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:31,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:31,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:31,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:31,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:00:31,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:31,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 00:00:31,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857934565] [2020-10-14 00:00:31,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:31,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:00:31,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406875219] [2020-10-14 00:00:31,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:00:31,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:31,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:00:31,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:31,634 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 9 states. [2020-10-14 00:00:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:32,090 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions. [2020-10-14 00:00:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 00:00:32,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-14 00:00:32,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:32,092 INFO L225 Difference]: With dead ends: 149 [2020-10-14 00:00:32,093 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 00:00:32,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:00:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 00:00:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 102. [2020-10-14 00:00:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 00:00:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2020-10-14 00:00:32,111 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 71 [2020-10-14 00:00:32,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:32,112 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2020-10-14 00:00:32,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:00:32,112 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2020-10-14 00:00:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 00:00:32,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:32,114 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:32,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:00:32,115 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:32,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1898109302, now seen corresponding path program 2 times [2020-10-14 00:00:32,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:32,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050536506] [2020-10-14 00:00:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 00:00:37,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:00:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:00:37,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:00:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 00:00:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:37,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:37,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:37,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:37,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:37,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:00:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:37,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:37,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:37,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:00:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:37,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 00:00:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:37,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:37,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:00:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:37,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:37,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:37,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:37,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:37,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:37,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:37,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 00:00:37,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050536506] [2020-10-14 00:00:37,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:37,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:00:37,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654090070] [2020-10-14 00:00:37,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:00:37,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:37,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:00:37,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:37,241 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand 10 states. [2020-10-14 00:00:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:37,798 INFO L93 Difference]: Finished difference Result 165 states and 195 transitions. [2020-10-14 00:00:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:00:37,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-10-14 00:00:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:37,800 INFO L225 Difference]: With dead ends: 165 [2020-10-14 00:00:37,801 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 00:00:37,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:00:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 00:00:37,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 102. [2020-10-14 00:00:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 00:00:37,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2020-10-14 00:00:37,819 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 72 [2020-10-14 00:00:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:37,821 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2020-10-14 00:00:37,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:00:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2020-10-14 00:00:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 00:00:37,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:37,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:37,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:00:37,822 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:37,823 INFO L82 PathProgramCache]: Analyzing trace with hash 957985334, now seen corresponding path program 4 times [2020-10-14 00:00:37,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:37,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168182969] [2020-10-14 00:00:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:38,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:42,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:42,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 00:00:42,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:00:42,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:00:42,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:42,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:00:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:00:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 00:00:42,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:42,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:42,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:42,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:42,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:42,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:42,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:42,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:00:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:42,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:42,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:42,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:42,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:42,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:42,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:42,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:42,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:42,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:42,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:00:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:42,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:42,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:42,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:42,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:42,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:42,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:42,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:42,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 00:00:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:42,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:42,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:42,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:42,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:42,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:42,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:00:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:42,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:42,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:42,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:42,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:00:42,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:42,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:42,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:42,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-14 00:00:42,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168182969] [2020-10-14 00:00:42,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:42,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 00:00:42,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220810631] [2020-10-14 00:00:42,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 00:00:42,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:42,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 00:00:42,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:00:42,964 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand 9 states. [2020-10-14 00:00:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:43,301 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2020-10-14 00:00:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:00:43,302 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-14 00:00:43,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:43,303 INFO L225 Difference]: With dead ends: 163 [2020-10-14 00:00:43,303 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 00:00:43,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:00:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 00:00:43,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2020-10-14 00:00:43,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 00:00:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2020-10-14 00:00:43,317 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 73 [2020-10-14 00:00:43,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:43,318 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2020-10-14 00:00:43,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 00:00:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2020-10-14 00:00:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 00:00:43,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:43,320 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:43,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:00:43,320 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:43,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1128405097, now seen corresponding path program 5 times [2020-10-14 00:00:43,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:43,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585244265] [2020-10-14 00:00:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 00:00:48,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:00:48,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:00:48,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:00:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 00:00:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:48,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:48,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:48,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:48,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:00:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:48,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:48,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:00:48,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:00:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:48,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:48,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:48,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 00:00:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:48,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:48,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:48,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:00:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:48,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:48,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:48,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:00:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:48,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:48,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:48,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:48,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 00:00:48,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585244265] [2020-10-14 00:00:48,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:48,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:00:48,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239802408] [2020-10-14 00:00:48,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:00:48,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:48,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:00:48,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:00:48,479 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 11 states. [2020-10-14 00:00:49,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:49,110 INFO L93 Difference]: Finished difference Result 276 states and 337 transitions. [2020-10-14 00:00:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:00:49,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-10-14 00:00:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:49,112 INFO L225 Difference]: With dead ends: 276 [2020-10-14 00:00:49,113 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 00:00:49,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:00:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 00:00:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 115. [2020-10-14 00:00:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 00:00:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 138 transitions. [2020-10-14 00:00:49,136 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 138 transitions. Word has length 83 [2020-10-14 00:00:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:49,137 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 138 transitions. [2020-10-14 00:00:49,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:00:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 138 transitions. [2020-10-14 00:00:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 00:00:49,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:49,138 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:49,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:00:49,138 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:49,139 INFO L82 PathProgramCache]: Analyzing trace with hash -775010835, now seen corresponding path program 3 times [2020-10-14 00:00:49,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:49,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615432457] [2020-10-14 00:00:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:49,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:51,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 00:00:54,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:00:54,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:00:54,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:00:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:54,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 00:00:54,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:54,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:54,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:54,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:54,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:00:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:54,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:54,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:54,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:00:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:54,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:54,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:54,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:54,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:00:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:54,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:54,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:00:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:54,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:54,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:00:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:54,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:00:54,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:54,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 00:00:54,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615432457] [2020-10-14 00:00:54,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:54,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:00:54,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934204285] [2020-10-14 00:00:54,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:00:54,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:54,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:00:54,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:00:54,277 INFO L87 Difference]: Start difference. First operand 115 states and 138 transitions. Second operand 10 states. [2020-10-14 00:00:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:00:54,815 INFO L93 Difference]: Finished difference Result 178 states and 213 transitions. [2020-10-14 00:00:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:00:54,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-14 00:00:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:00:54,818 INFO L225 Difference]: With dead ends: 178 [2020-10-14 00:00:54,818 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 00:00:54,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:00:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 00:00:54,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 115. [2020-10-14 00:00:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 00:00:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 138 transitions. [2020-10-14 00:00:54,847 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 138 transitions. Word has length 85 [2020-10-14 00:00:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:00:54,848 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 138 transitions. [2020-10-14 00:00:54,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:00:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 138 transitions. [2020-10-14 00:00:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 00:00:54,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:00:54,851 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:00:54,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:00:54,854 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:00:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:00:54,855 INFO L82 PathProgramCache]: Analyzing trace with hash -121669853, now seen corresponding path program 4 times [2020-10-14 00:00:54,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:00:54,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700611570] [2020-10-14 00:00:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:00:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:55,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:57,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 00:00:59,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:00:59,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:00:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:00:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:00:59,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 00:00:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:00:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:59,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:59,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:59,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:59,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:00:59,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:00:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:59,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:59,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:00:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:00:59,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:00:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:59,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:59,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:59,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:00:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:59,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:00:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:00:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:00:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:00:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:00:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:00:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:00:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:00:59,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:00:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:00:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:00:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:00:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:00:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 00:00:59,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700611570] [2020-10-14 00:00:59,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:00:59,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:00:59,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030315363] [2020-10-14 00:00:59,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:00:59,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:00:59,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:00:59,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:00:59,986 INFO L87 Difference]: Start difference. First operand 115 states and 138 transitions. Second operand 11 states. [2020-10-14 00:01:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:00,593 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2020-10-14 00:01:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:01:00,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 86 [2020-10-14 00:01:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:00,597 INFO L225 Difference]: With dead ends: 196 [2020-10-14 00:01:00,597 INFO L226 Difference]: Without dead ends: 185 [2020-10-14 00:01:00,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:01:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-14 00:01:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 115. [2020-10-14 00:01:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 00:01:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 138 transitions. [2020-10-14 00:01:00,609 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 138 transitions. Word has length 86 [2020-10-14 00:01:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:00,610 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 138 transitions. [2020-10-14 00:01:00,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:01:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 138 transitions. [2020-10-14 00:01:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 00:01:00,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:00,611 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:00,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:01:00,612 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:00,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:00,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1696474825, now seen corresponding path program 3 times [2020-10-14 00:01:00,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:00,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750033520] [2020-10-14 00:01:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:01,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 00:01:05,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:01:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 00:01:05,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:01:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 00:01:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:05,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:05,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:05,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:05,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:05,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:01:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:05,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:05,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:05,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:05,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:01:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:05,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:05,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:05,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:05,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:01:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:05,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:05,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:01:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:05,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:05,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:05,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:01:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:05,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:05,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:05,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:05,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:05,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:05,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 00:01:05,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750033520] [2020-10-14 00:01:05,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:05,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:01:05,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784863279] [2020-10-14 00:01:05,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:01:05,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:05,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:01:05,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:01:05,757 INFO L87 Difference]: Start difference. First operand 115 states and 138 transitions. Second operand 10 states. [2020-10-14 00:01:06,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:06,303 INFO L93 Difference]: Finished difference Result 178 states and 213 transitions. [2020-10-14 00:01:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:01:06,303 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-14 00:01:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:06,306 INFO L225 Difference]: With dead ends: 178 [2020-10-14 00:01:06,306 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 00:01:06,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:01:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 00:01:06,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 121. [2020-10-14 00:01:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 00:01:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 145 transitions. [2020-10-14 00:01:06,317 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 145 transitions. Word has length 86 [2020-10-14 00:01:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:06,318 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 145 transitions. [2020-10-14 00:01:06,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:01:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2020-10-14 00:01:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 00:01:06,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:06,320 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:06,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:01:06,320 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:06,320 INFO L82 PathProgramCache]: Analyzing trace with hash -997476187, now seen corresponding path program 6 times [2020-10-14 00:01:06,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:06,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606553800] [2020-10-14 00:01:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:06,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:06,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 00:01:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:11,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 00:01:11,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:11,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:11,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:01:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:11,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:11,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:11,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:01:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:11,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:11,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:11,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:01:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:01:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:11,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:11,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:01:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:11,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:11,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:11,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:11,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 00:01:11,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606553800] [2020-10-14 00:01:11,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:11,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:01:11,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369058398] [2020-10-14 00:01:11,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:01:11,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:11,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:01:11,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:01:11,443 INFO L87 Difference]: Start difference. First operand 121 states and 145 transitions. Second operand 10 states. [2020-10-14 00:01:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:11,812 INFO L93 Difference]: Finished difference Result 190 states and 231 transitions. [2020-10-14 00:01:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:01:11,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-14 00:01:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:11,817 INFO L225 Difference]: With dead ends: 190 [2020-10-14 00:01:11,818 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 00:01:11,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:01:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 00:01:11,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2020-10-14 00:01:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 00:01:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2020-10-14 00:01:11,829 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 87 [2020-10-14 00:01:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:11,830 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2020-10-14 00:01:11,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:01:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2020-10-14 00:01:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 00:01:11,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:11,832 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:11,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:01:11,832 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:11,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1774605096, now seen corresponding path program 7 times [2020-10-14 00:01:11,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:11,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968079434] [2020-10-14 00:01:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:11,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:16,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 00:01:16,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:01:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:01:16,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:16,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:01:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:16,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 00:01:16,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:16,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:16,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:16,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:16,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:01:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:16,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:16,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:01:16,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:16,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:16,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:16,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:01:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:16,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:16,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:16,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:16,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:16,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:16,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:16,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:01:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:16,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:16,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:16,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:01:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:16,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:16,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:16,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:16,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:16,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:16,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:16,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:01:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:16,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:16,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:16,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:16,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:16,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:01:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:16,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:16,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:16,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:16,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:16,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:16,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:16,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 00:01:16,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968079434] [2020-10-14 00:01:16,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:16,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:01:16,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999002364] [2020-10-14 00:01:16,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:01:16,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:16,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:01:16,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:01:16,991 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand 12 states. [2020-10-14 00:01:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:17,727 INFO L93 Difference]: Finished difference Result 322 states and 397 transitions. [2020-10-14 00:01:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:01:17,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-10-14 00:01:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:17,730 INFO L225 Difference]: With dead ends: 322 [2020-10-14 00:01:17,731 INFO L226 Difference]: Without dead ends: 209 [2020-10-14 00:01:17,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:01:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-14 00:01:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 134. [2020-10-14 00:01:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 00:01:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2020-10-14 00:01:17,748 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 97 [2020-10-14 00:01:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:17,748 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2020-10-14 00:01:17,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:01:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2020-10-14 00:01:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 00:01:17,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:17,750 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:17,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:01:17,750 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash 31566940, now seen corresponding path program 5 times [2020-10-14 00:01:17,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:17,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32732667] [2020-10-14 00:01:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:19,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 00:01:22,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:22,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:22,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:01:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:22,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:22,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:22,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:22,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:01:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:22,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:22,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:22,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:22,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:22,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:01:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:22,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:22,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:01:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:22,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:22,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:01:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:22,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:22,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:22,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:01:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:22,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:22,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:22,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:22,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:22,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 00:01:22,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32732667] [2020-10-14 00:01:22,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:22,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:01:22,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74711488] [2020-10-14 00:01:22,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:01:22,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:22,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:01:22,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:01:22,898 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand 11 states. [2020-10-14 00:01:23,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:23,519 INFO L93 Difference]: Finished difference Result 210 states and 253 transitions. [2020-10-14 00:01:23,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:01:23,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2020-10-14 00:01:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:23,522 INFO L225 Difference]: With dead ends: 210 [2020-10-14 00:01:23,522 INFO L226 Difference]: Without dead ends: 199 [2020-10-14 00:01:23,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:01:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-14 00:01:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 134. [2020-10-14 00:01:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 00:01:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2020-10-14 00:01:23,540 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 99 [2020-10-14 00:01:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:23,540 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2020-10-14 00:01:23,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:01:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2020-10-14 00:01:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 00:01:23,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:23,542 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:23,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:01:23,542 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:23,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1070253040, now seen corresponding path program 6 times [2020-10-14 00:01:23,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:23,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342074020] [2020-10-14 00:01:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:23,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:25,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:26,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:27,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:01:28,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 00:01:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:01:28,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:01:28,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:28,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 00:01:28,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:28,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:28,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:28,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:01:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:28,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:28,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:28,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:01:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:28,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:28,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:01:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:28,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:01:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:28,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:28,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:01:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:28,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:28,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:01:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:28,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:28,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:28,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:28,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:28,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:28,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 00:01:28,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342074020] [2020-10-14 00:01:28,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:28,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:01:28,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303042279] [2020-10-14 00:01:28,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:01:28,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:28,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:01:28,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:01:28,710 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand 12 states. [2020-10-14 00:01:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:29,458 INFO L93 Difference]: Finished difference Result 227 states and 273 transitions. [2020-10-14 00:01:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:01:29,459 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-14 00:01:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:29,462 INFO L225 Difference]: With dead ends: 227 [2020-10-14 00:01:29,462 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 00:01:29,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:01:29,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 00:01:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 134. [2020-10-14 00:01:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 00:01:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2020-10-14 00:01:29,476 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 100 [2020-10-14 00:01:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:29,476 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2020-10-14 00:01:29,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:01:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2020-10-14 00:01:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 00:01:29,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:29,478 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:29,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:01:29,478 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:29,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1884906954, now seen corresponding path program 7 times [2020-10-14 00:01:29,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:29,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582271906] [2020-10-14 00:01:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:30,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 00:01:34,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:34,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:34,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:34,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:34,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:34,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:01:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:34,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:01:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:34,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:34,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:34,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:34,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:01:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:34,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:01:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:34,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:34,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:01:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:34,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:34,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:34,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:34,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:01:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:34,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:34,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:34,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:34,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:34,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:34,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:34,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:34,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:34,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 00:01:34,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582271906] [2020-10-14 00:01:34,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:34,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 00:01:34,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761002561] [2020-10-14 00:01:34,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 00:01:34,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:34,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 00:01:34,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:01:34,638 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand 11 states. [2020-10-14 00:01:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:35,042 INFO L93 Difference]: Finished difference Result 205 states and 251 transitions. [2020-10-14 00:01:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:01:35,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-14 00:01:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:35,044 INFO L225 Difference]: With dead ends: 205 [2020-10-14 00:01:35,044 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 00:01:35,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:01:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 00:01:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2020-10-14 00:01:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 00:01:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 177 transitions. [2020-10-14 00:01:35,058 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 177 transitions. Word has length 100 [2020-10-14 00:01:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:35,059 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 177 transitions. [2020-10-14 00:01:35,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 00:01:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 177 transitions. [2020-10-14 00:01:35,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 00:01:35,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:35,060 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:35,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:01:35,061 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:35,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:35,061 INFO L82 PathProgramCache]: Analyzing trace with hash 73917859, now seen corresponding path program 8 times [2020-10-14 00:01:35,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:35,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097039912] [2020-10-14 00:01:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:35,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:36,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:37,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:39,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 00:01:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 00:01:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:01:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:01:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 00:01:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:40,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:01:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:40,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:40,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:40,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:01:40,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:01:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:40,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:01:40,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:01:40,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:01:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:40,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:40,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:01:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:40,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:40,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:40,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:01:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:40,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:40,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:01:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:40,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:40,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 00:01:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:40,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:40,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:40,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:40,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:01:40,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:40,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:40,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:40,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-14 00:01:40,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097039912] [2020-10-14 00:01:40,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:40,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:01:40,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981576019] [2020-10-14 00:01:40,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:01:40,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:40,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:01:40,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:01:40,349 INFO L87 Difference]: Start difference. First operand 143 states and 177 transitions. Second operand 15 states. [2020-10-14 00:01:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:41,064 INFO L93 Difference]: Finished difference Result 179 states and 218 transitions. [2020-10-14 00:01:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:01:41,065 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-14 00:01:41,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:41,067 INFO L225 Difference]: With dead ends: 179 [2020-10-14 00:01:41,067 INFO L226 Difference]: Without dead ends: 177 [2020-10-14 00:01:41,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2020-10-14 00:01:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-14 00:01:41,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2020-10-14 00:01:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-14 00:01:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 190 transitions. [2020-10-14 00:01:41,085 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 190 transitions. Word has length 110 [2020-10-14 00:01:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:41,085 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 190 transitions. [2020-10-14 00:01:41,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:01:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 190 transitions. [2020-10-14 00:01:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 00:01:41,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:41,087 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:41,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:01:41,087 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:41,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1001386759, now seen corresponding path program 8 times [2020-10-14 00:01:41,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:41,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145908068] [2020-10-14 00:01:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:42,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 00:01:46,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:01:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 00:01:46,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:01:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:46,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:01:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:46,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:46,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:46,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:01:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:46,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:46,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:01:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:46,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:01:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:46,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:46,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:01:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:46,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:46,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 00:01:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 00:01:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:46,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:46,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 00:01:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:46,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:46,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:46,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:46,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:46,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:46,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 00:01:46,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145908068] [2020-10-14 00:01:46,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:46,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:01:46,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464496166] [2020-10-14 00:01:46,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:01:46,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:46,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:01:46,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:01:46,298 INFO L87 Difference]: Start difference. First operand 154 states and 190 transitions. Second operand 14 states. [2020-10-14 00:01:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:47,248 INFO L93 Difference]: Finished difference Result 384 states and 476 transitions. [2020-10-14 00:01:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:01:47,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 111 [2020-10-14 00:01:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:47,251 INFO L225 Difference]: With dead ends: 384 [2020-10-14 00:01:47,251 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 00:01:47,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:01:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 00:01:47,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 158. [2020-10-14 00:01:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 00:01:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 194 transitions. [2020-10-14 00:01:47,278 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 194 transitions. Word has length 111 [2020-10-14 00:01:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:47,278 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 194 transitions. [2020-10-14 00:01:47,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:01:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 194 transitions. [2020-10-14 00:01:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 00:01:47,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:47,281 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:47,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:01:47,282 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:47,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1385038987, now seen corresponding path program 9 times [2020-10-14 00:01:47,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:47,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756915236] [2020-10-14 00:01:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:49,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:50,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 00:01:52,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:01:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:01:52,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:01:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 00:01:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:52,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:52,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:01:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:52,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:52,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:52,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:01:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:52,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:01:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:52,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:52,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:52,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 00:01:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:52,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:52,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:52,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:01:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:52,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:01:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:52,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:52,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:52,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:52,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:01:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:52,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:52,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:52,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:52,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:52,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:52,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-14 00:01:52,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756915236] [2020-10-14 00:01:52,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:52,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:01:52,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893838264] [2020-10-14 00:01:52,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:01:52,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:52,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:01:52,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:01:52,444 INFO L87 Difference]: Start difference. First operand 158 states and 194 transitions. Second operand 12 states. [2020-10-14 00:01:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:53,195 INFO L93 Difference]: Finished difference Result 251 states and 304 transitions. [2020-10-14 00:01:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:01:53,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-10-14 00:01:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:53,198 INFO L225 Difference]: With dead ends: 251 [2020-10-14 00:01:53,199 INFO L226 Difference]: Without dead ends: 240 [2020-10-14 00:01:53,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:01:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-14 00:01:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 158. [2020-10-14 00:01:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 00:01:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 194 transitions. [2020-10-14 00:01:53,215 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 194 transitions. Word has length 113 [2020-10-14 00:01:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:53,215 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 194 transitions. [2020-10-14 00:01:53,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:01:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 194 transitions. [2020-10-14 00:01:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:01:53,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:53,217 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:53,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:01:53,218 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:53,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1534142403, now seen corresponding path program 10 times [2020-10-14 00:01:53,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:53,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450285258] [2020-10-14 00:01:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:55,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:55,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 00:01:58,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:01:58,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:01:58,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:01:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:01:58,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 00:01:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:01:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:58,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:01:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:01:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:58,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:01:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:01:58,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:58,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:01:58,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:01:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:58,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:01:58,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 00:01:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:58,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:01:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:58,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:58,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:58,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:01:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:01:58,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:01:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:58,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:58,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:01:58,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:01:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:01:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:01:58,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:01:58,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:01:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:01:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:01:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:01:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:01:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-14 00:01:58,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450285258] [2020-10-14 00:01:58,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:01:58,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:01:58,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900152205] [2020-10-14 00:01:58,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:01:58,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:01:58,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:01:58,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:01:58,408 INFO L87 Difference]: Start difference. First operand 158 states and 194 transitions. Second operand 13 states. [2020-10-14 00:01:59,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:01:59,167 INFO L93 Difference]: Finished difference Result 269 states and 325 transitions. [2020-10-14 00:01:59,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:01:59,168 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-14 00:01:59,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:01:59,170 INFO L225 Difference]: With dead ends: 269 [2020-10-14 00:01:59,170 INFO L226 Difference]: Without dead ends: 258 [2020-10-14 00:01:59,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:01:59,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-14 00:01:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 158. [2020-10-14 00:01:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 00:01:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 194 transitions. [2020-10-14 00:01:59,190 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 194 transitions. Word has length 114 [2020-10-14 00:01:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:01:59,191 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 194 transitions. [2020-10-14 00:01:59,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:01:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 194 transitions. [2020-10-14 00:01:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 00:01:59,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:01:59,192 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:01:59,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:01:59,193 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:01:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:01:59,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1562461411, now seen corresponding path program 11 times [2020-10-14 00:01:59,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:01:59,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632910417] [2020-10-14 00:01:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:01:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:01:59,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:01:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 00:02:04,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 00:02:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:02:04,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:02:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 00:02:04,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:04,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:04,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:04,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:02:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:04,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:04,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:02:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:04,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:04,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:04,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:02:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 00:02:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:04,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:04,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:04,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:02:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:04,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:04,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:02:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:04,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:04,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:02:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:04,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:04,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:04,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:04,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:04,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:04,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:04,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:04,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-14 00:02:04,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632910417] [2020-10-14 00:02:04,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:04,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:02:04,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898715324] [2020-10-14 00:02:04,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:02:04,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:04,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:02:04,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:02:04,362 INFO L87 Difference]: Start difference. First operand 158 states and 194 transitions. Second operand 12 states. [2020-10-14 00:02:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:05,057 INFO L93 Difference]: Finished difference Result 259 states and 313 transitions. [2020-10-14 00:02:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:02:05,058 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-14 00:02:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:05,061 INFO L225 Difference]: With dead ends: 259 [2020-10-14 00:02:05,061 INFO L226 Difference]: Without dead ends: 241 [2020-10-14 00:02:05,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:02:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-14 00:02:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-10-14 00:02:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 00:02:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 193 transitions. [2020-10-14 00:02:05,080 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 193 transitions. Word has length 114 [2020-10-14 00:02:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:05,080 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 193 transitions. [2020-10-14 00:02:05,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:02:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 193 transitions. [2020-10-14 00:02:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 00:02:05,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:05,082 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:05,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 00:02:05,082 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:05,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1303835965, now seen corresponding path program 9 times [2020-10-14 00:02:05,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:05,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327646272] [2020-10-14 00:02:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:05,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:05,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 00:02:10,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:02:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 00:02:10,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:02:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:02:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:10,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 00:02:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:10,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:10,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:10,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 00:02:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:10,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:10,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:10,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:10,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:10,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:10,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 00:02:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:10,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:10,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 00:02:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:10,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:10,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:10,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:10,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:10,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 00:02:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:10,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:10,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:10,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:10,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:10,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:10,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:10,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 00:02:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:10,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:10,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:02:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:10,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:10,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:10,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:10,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:10,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:10,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-14 00:02:10,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327646272] [2020-10-14 00:02:10,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:10,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:02:10,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685513563] [2020-10-14 00:02:10,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:02:10,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:10,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:02:10,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:02:10,287 INFO L87 Difference]: Start difference. First operand 157 states and 193 transitions. Second operand 14 states. [2020-10-14 00:02:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:11,283 INFO L93 Difference]: Finished difference Result 404 states and 499 transitions. [2020-10-14 00:02:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:02:11,284 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 115 [2020-10-14 00:02:11,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:11,288 INFO L225 Difference]: With dead ends: 404 [2020-10-14 00:02:11,288 INFO L226 Difference]: Without dead ends: 268 [2020-10-14 00:02:11,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:02:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-14 00:02:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 161. [2020-10-14 00:02:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 00:02:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2020-10-14 00:02:11,321 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 115 [2020-10-14 00:02:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:11,321 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2020-10-14 00:02:11,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:02:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2020-10-14 00:02:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 00:02:11,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:11,323 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:11,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 00:02:11,324 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:11,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1245612999, now seen corresponding path program 12 times [2020-10-14 00:02:11,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:11,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774724987] [2020-10-14 00:02:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:11,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:13,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:14,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 00:02:16,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:02:16,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 00:02:16,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:02:16,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:16,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 00:02:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:16,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:16,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:16,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:02:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:16,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:16,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:02:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:16,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:16,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:02:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:16,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:16,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:02:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:16,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:16,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:02:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:16,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:16,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:02:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:16,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:02:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:16,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:16,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:16,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:16,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 00:02:16,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774724987] [2020-10-14 00:02:16,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:16,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:02:16,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115035134] [2020-10-14 00:02:16,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:02:16,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:16,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:02:16,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:02:16,516 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand 13 states. [2020-10-14 00:02:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:17,396 INFO L93 Difference]: Finished difference Result 277 states and 333 transitions. [2020-10-14 00:02:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:02:17,397 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-10-14 00:02:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:17,399 INFO L225 Difference]: With dead ends: 277 [2020-10-14 00:02:17,400 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 00:02:17,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 00:02:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 00:02:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 161. [2020-10-14 00:02:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 00:02:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2020-10-14 00:02:17,420 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 117 [2020-10-14 00:02:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:17,420 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2020-10-14 00:02:17,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:02:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2020-10-14 00:02:17,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 00:02:17,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:17,422 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:17,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 00:02:17,422 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:17,423 INFO L82 PathProgramCache]: Analyzing trace with hash -815237123, now seen corresponding path program 13 times [2020-10-14 00:02:17,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:17,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230812758] [2020-10-14 00:02:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:17,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 00:02:22,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:02:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:02:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:02:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 00:02:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:22,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:22,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:22,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:02:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:22,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:22,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:22,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:02:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:22,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:22,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:22,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:02:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:22,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:22,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:22,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:02:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:22,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:22,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:22,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:22,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:02:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:22,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:22,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:02:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:02:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:22,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:22,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:22,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:22,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:22,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:22,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:22,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 00:02:22,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230812758] [2020-10-14 00:02:22,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:22,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:02:22,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78909986] [2020-10-14 00:02:22,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:02:22,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:22,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:02:22,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:02:22,625 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand 14 states. [2020-10-14 00:02:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:23,472 INFO L93 Difference]: Finished difference Result 290 states and 349 transitions. [2020-10-14 00:02:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:02:23,473 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 118 [2020-10-14 00:02:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:23,476 INFO L225 Difference]: With dead ends: 290 [2020-10-14 00:02:23,476 INFO L226 Difference]: Without dead ends: 279 [2020-10-14 00:02:23,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=314, Invalid=876, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:02:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-14 00:02:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 161. [2020-10-14 00:02:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 00:02:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2020-10-14 00:02:23,494 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 118 [2020-10-14 00:02:23,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:23,494 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2020-10-14 00:02:23,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:02:23,494 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2020-10-14 00:02:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 00:02:23,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:23,495 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:23,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 00:02:23,495 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:23,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1391307997, now seen corresponding path program 14 times [2020-10-14 00:02:23,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:23,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559193254] [2020-10-14 00:02:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 00:02:28,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:02:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:02:28,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:02:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 00:02:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:28,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:02:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:28,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:28,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:28,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:28,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:02:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:28,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:28,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:28,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:28,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:02:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:28,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:28,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:28,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:28,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:02:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:28,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:28,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:28,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:28,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:28,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:02:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:28,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:02:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:28,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:28,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:28,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:02:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:28,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:28,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:28,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:28,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:28,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 00:02:28,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559193254] [2020-10-14 00:02:28,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:28,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:02:28,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504235606] [2020-10-14 00:02:28,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:02:28,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:28,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:02:28,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:02:28,673 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand 13 states. [2020-10-14 00:02:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:29,510 INFO L93 Difference]: Finished difference Result 276 states and 332 transitions. [2020-10-14 00:02:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 00:02:29,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-14 00:02:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:29,513 INFO L225 Difference]: With dead ends: 276 [2020-10-14 00:02:29,513 INFO L226 Difference]: Without dead ends: 265 [2020-10-14 00:02:29,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:02:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-14 00:02:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 161. [2020-10-14 00:02:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 00:02:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2020-10-14 00:02:29,531 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 118 [2020-10-14 00:02:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:29,532 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2020-10-14 00:02:29,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:02:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2020-10-14 00:02:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 00:02:29,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:29,533 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:29,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 00:02:29,533 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:29,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1455913857, now seen corresponding path program 10 times [2020-10-14 00:02:29,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:29,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993301770] [2020-10-14 00:02:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:29,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 00:02:34,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:02:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 00:02:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 00:02:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 00:02:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:34,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:34,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:34,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:02:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:34,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:34,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:02:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:34,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:34,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:34,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:34,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:34,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:02:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:34,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:02:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:34,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:34,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:34,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:34,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:02:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:34,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:34,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:02:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:34,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:34,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:02:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:34,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:34,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:34,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:34,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:34,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:34,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:34,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 00:02:34,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993301770] [2020-10-14 00:02:34,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:34,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:02:34,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548004418] [2020-10-14 00:02:34,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:02:34,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:34,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:02:34,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:02:34,714 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand 12 states. [2020-10-14 00:02:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:35,174 INFO L93 Difference]: Finished difference Result 246 states and 301 transitions. [2020-10-14 00:02:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 00:02:35,175 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 119 [2020-10-14 00:02:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:35,176 INFO L225 Difference]: With dead ends: 246 [2020-10-14 00:02:35,176 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 00:02:35,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:02:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 00:02:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 170. [2020-10-14 00:02:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 00:02:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 211 transitions. [2020-10-14 00:02:35,196 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 211 transitions. Word has length 119 [2020-10-14 00:02:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:35,197 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 211 transitions. [2020-10-14 00:02:35,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:02:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 211 transitions. [2020-10-14 00:02:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 00:02:35,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:35,198 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:35,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 00:02:35,199 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash -562661774, now seen corresponding path program 11 times [2020-10-14 00:02:35,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:35,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304990844] [2020-10-14 00:02:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:35,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 00:02:40,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:02:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 00:02:40,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:02:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 00:02:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:40,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:40,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 00:02:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 00:02:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:40,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:02:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:40,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 00:02:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:40,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:02:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:40,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:02:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:40,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:02:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:40,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:40,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:02:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:40,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:40,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:40,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:40,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:40,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:40,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:40,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-14 00:02:40,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304990844] [2020-10-14 00:02:40,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:40,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:02:40,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609905884] [2020-10-14 00:02:40,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:02:40,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:40,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:02:40,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:02:40,438 INFO L87 Difference]: Start difference. First operand 170 states and 211 transitions. Second operand 15 states. [2020-10-14 00:02:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:41,539 INFO L93 Difference]: Finished difference Result 444 states and 552 transitions. [2020-10-14 00:02:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:02:41,540 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 129 [2020-10-14 00:02:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:41,541 INFO L225 Difference]: With dead ends: 444 [2020-10-14 00:02:41,542 INFO L226 Difference]: Without dead ends: 297 [2020-10-14 00:02:41,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=364, Invalid=968, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:02:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-14 00:02:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 174. [2020-10-14 00:02:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 00:02:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 215 transitions. [2020-10-14 00:02:41,567 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 215 transitions. Word has length 129 [2020-10-14 00:02:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:41,568 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 215 transitions. [2020-10-14 00:02:41,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:02:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 215 transitions. [2020-10-14 00:02:41,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 00:02:41,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:41,569 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:41,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 00:02:41,570 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:41,570 INFO L82 PathProgramCache]: Analyzing trace with hash 422898038, now seen corresponding path program 15 times [2020-10-14 00:02:41,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:41,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802974563] [2020-10-14 00:02:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:43,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:45,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 00:02:46,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 00:02:46,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 00:02:46,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:02:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 00:02:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:46,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:46,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:46,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:46,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:02:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:46,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:46,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:46,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:02:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:46,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:46,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:02:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:46,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:46,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:02:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:46,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:02:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:46,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:46,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:02:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:46,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:46,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:02:46,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:02:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:46,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:46,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:02:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:46,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:46,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:46,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:46,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:46,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:46,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:46,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:46,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 00:02:46,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802974563] [2020-10-14 00:02:46,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:46,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:02:46,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793914146] [2020-10-14 00:02:46,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:02:46,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:46,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:02:46,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:02:46,838 INFO L87 Difference]: Start difference. First operand 174 states and 215 transitions. Second operand 14 states. [2020-10-14 00:02:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:47,794 INFO L93 Difference]: Finished difference Result 310 states and 374 transitions. [2020-10-14 00:02:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:02:47,795 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 131 [2020-10-14 00:02:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:47,798 INFO L225 Difference]: With dead ends: 310 [2020-10-14 00:02:47,798 INFO L226 Difference]: Without dead ends: 299 [2020-10-14 00:02:47,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:02:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-14 00:02:47,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 174. [2020-10-14 00:02:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 00:02:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 215 transitions. [2020-10-14 00:02:47,823 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 215 transitions. Word has length 131 [2020-10-14 00:02:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:47,823 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 215 transitions. [2020-10-14 00:02:47,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:02:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 215 transitions. [2020-10-14 00:02:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 00:02:47,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:47,825 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:47,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 00:02:47,825 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:47,826 INFO L82 PathProgramCache]: Analyzing trace with hash -775465444, now seen corresponding path program 16 times [2020-10-14 00:02:47,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:47,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661519193] [2020-10-14 00:02:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:49,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:52,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:52,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:52,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 00:02:52,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:02:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:02:52,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:52,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:02:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:52,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 00:02:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:53,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:53,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:53,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:02:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:53,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:53,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:53,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:02:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:02:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:02:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:53,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:53,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:53,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:02:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:53,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:53,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:53,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:02:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:53,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:53,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:53,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:02:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:53,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:53,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:02:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:53,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:53,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:53,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-10-14 00:02:53,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661519193] [2020-10-14 00:02:53,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:53,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:02:53,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009566852] [2020-10-14 00:02:53,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:02:53,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:53,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:02:53,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:02:53,130 INFO L87 Difference]: Start difference. First operand 174 states and 215 transitions. Second operand 17 states. [2020-10-14 00:02:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:02:54,087 INFO L93 Difference]: Finished difference Result 222 states and 268 transitions. [2020-10-14 00:02:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:02:54,088 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2020-10-14 00:02:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:02:54,090 INFO L225 Difference]: With dead ends: 222 [2020-10-14 00:02:54,091 INFO L226 Difference]: Without dead ends: 220 [2020-10-14 00:02:54,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:02:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-14 00:02:54,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 176. [2020-10-14 00:02:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 00:02:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 218 transitions. [2020-10-14 00:02:54,119 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 218 transitions. Word has length 131 [2020-10-14 00:02:54,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:02:54,120 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 218 transitions. [2020-10-14 00:02:54,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:02:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 218 transitions. [2020-10-14 00:02:54,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 00:02:54,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:02:54,122 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:02:54,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 00:02:54,122 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:02:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:02:54,123 INFO L82 PathProgramCache]: Analyzing trace with hash -765124438, now seen corresponding path program 17 times [2020-10-14 00:02:54,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:02:54,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903067990] [2020-10-14 00:02:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:02:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:54,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:56,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:57,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:58,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 00:02:59,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:02:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:02:59,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:02:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:02:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 00:02:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:02:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:59,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:02:59,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:02:59,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:02:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:59,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:59,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:59,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:02:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:02:59,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:59,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:02:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:02:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:59,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:59,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:02:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:59,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:59,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:59,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:02:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:59,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:02:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:59,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:02:59,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:02:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:59,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:59,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:02:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:02:59,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:02:59,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:02:59,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:02:59,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:02:59,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:02:59,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:02:59,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:02:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:02:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:02:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:02:59,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:02:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 00:02:59,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903067990] [2020-10-14 00:02:59,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:02:59,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:02:59,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866966619] [2020-10-14 00:02:59,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:02:59,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:02:59,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:02:59,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:02:59,345 INFO L87 Difference]: Start difference. First operand 176 states and 218 transitions. Second operand 15 states. [2020-10-14 00:03:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:00,391 INFO L93 Difference]: Finished difference Result 323 states and 391 transitions. [2020-10-14 00:03:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:03:00,392 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 132 [2020-10-14 00:03:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:00,394 INFO L225 Difference]: With dead ends: 323 [2020-10-14 00:03:00,394 INFO L226 Difference]: Without dead ends: 312 [2020-10-14 00:03:00,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=389, Invalid=1093, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 00:03:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-14 00:03:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 176. [2020-10-14 00:03:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 00:03:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 218 transitions. [2020-10-14 00:03:00,423 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 218 transitions. Word has length 132 [2020-10-14 00:03:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:00,424 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 218 transitions. [2020-10-14 00:03:00,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:03:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 218 transitions. [2020-10-14 00:03:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 00:03:00,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:00,425 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:00,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 00:03:00,426 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:00,426 INFO L82 PathProgramCache]: Analyzing trace with hash -318453168, now seen corresponding path program 18 times [2020-10-14 00:03:00,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:00,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354486024] [2020-10-14 00:03:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 00:03:05,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 00:03:05,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:03:05,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:03:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:03:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 00:03:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:05,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:03:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:03:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:03:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:05,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:03:05,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:03:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:05,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:05,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:03:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:03:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:05,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:03:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:05,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:05,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:03:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:05,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:05,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:05,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:03:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:05,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:03:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:05,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:03:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:05,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:05,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:05,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:05,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:05,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:05,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 00:03:05,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354486024] [2020-10-14 00:03:05,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:05,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 00:03:05,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672379165] [2020-10-14 00:03:05,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 00:03:05,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:05,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 00:03:05,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:03:05,640 INFO L87 Difference]: Start difference. First operand 176 states and 218 transitions. Second operand 14 states. [2020-10-14 00:03:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:06,642 INFO L93 Difference]: Finished difference Result 311 states and 376 transitions. [2020-10-14 00:03:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:03:06,643 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-14 00:03:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:06,646 INFO L225 Difference]: With dead ends: 311 [2020-10-14 00:03:06,646 INFO L226 Difference]: Without dead ends: 300 [2020-10-14 00:03:06,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:03:06,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-14 00:03:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 176. [2020-10-14 00:03:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 00:03:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 218 transitions. [2020-10-14 00:03:06,677 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 218 transitions. Word has length 132 [2020-10-14 00:03:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:06,677 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 218 transitions. [2020-10-14 00:03:06,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 00:03:06,678 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 218 transitions. [2020-10-14 00:03:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 00:03:06,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:06,679 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:06,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 00:03:06,679 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:06,680 INFO L82 PathProgramCache]: Analyzing trace with hash 2074321902, now seen corresponding path program 12 times [2020-10-14 00:03:06,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:06,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372083283] [2020-10-14 00:03:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:06,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 00:03:11,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:03:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:03:11,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:03:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:03:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 00:03:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:03:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:11,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:03:11,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:03:11,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:03:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:11,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:03:11,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:11,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:03:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:03:11,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:03:11,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:03:11,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:11,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 00:03:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:11,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:03:11,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:11,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 00:03:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:11,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:03:11,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:11,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 00:03:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:11,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:03:11,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:03:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:11,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:03:11,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:11,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:11,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 00:03:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:11,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:03:11,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:11,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:03:11,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 00:03:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:11,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:03:11,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:03:11,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:03:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:03:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:03:11,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:03:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:03:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:03:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:03:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:03:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-14 00:03:11,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372083283] [2020-10-14 00:03:11,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:03:11,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:03:11,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393640744] [2020-10-14 00:03:11,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:03:11,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:03:11,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:03:12,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:03:12,000 INFO L87 Difference]: Start difference. First operand 176 states and 218 transitions. Second operand 17 states. [2020-10-14 00:03:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:03:13,256 INFO L93 Difference]: Finished difference Result 470 states and 583 transitions. [2020-10-14 00:03:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 00:03:13,257 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 133 [2020-10-14 00:03:13,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:03:13,260 INFO L225 Difference]: With dead ends: 470 [2020-10-14 00:03:13,260 INFO L226 Difference]: Without dead ends: 319 [2020-10-14 00:03:13,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=445, Invalid=1195, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 00:03:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-14 00:03:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 180. [2020-10-14 00:03:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-14 00:03:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 222 transitions. [2020-10-14 00:03:13,291 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 222 transitions. Word has length 133 [2020-10-14 00:03:13,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:03:13,291 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 222 transitions. [2020-10-14 00:03:13,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:03:13,291 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 222 transitions. [2020-10-14 00:03:13,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 00:03:13,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:03:13,293 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:03:13,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 00:03:13,293 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:03:13,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:03:13,294 INFO L82 PathProgramCache]: Analyzing trace with hash -735574414, now seen corresponding path program 19 times [2020-10-14 00:03:13,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:03:13,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469613869] [2020-10-14 00:03:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:03:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:03:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:13,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:13,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:03:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking...