/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:35:21,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:35:21,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:35:21,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:35:21,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:35:21,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:35:21,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:35:21,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:35:21,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:35:21,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:35:21,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:35:21,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:35:21,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:35:21,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:35:21,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:35:21,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:35:21,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:35:21,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:35:21,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:35:21,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:35:21,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:35:21,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:35:21,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:35:21,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:35:21,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:35:21,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:35:21,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:35:21,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:35:21,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:35:21,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:35:21,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:35:21,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:35:21,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:35:21,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:35:21,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:35:21,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:35:21,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:35:21,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:35:21,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:35:21,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:35:21,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:35:21,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:35:22,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:35:22,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:35:22,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:35:22,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:35:22,020 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:35:22,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:35:22,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:35:22,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:35:22,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:35:22,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:35:22,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:35:22,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:35:22,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:35:22,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:35:22,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:35:22,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:35:22,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:35:22,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:35:22,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:35:22,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:35:22,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:35:22,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:35:22,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:35:22,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:35:22,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:35:22,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:35:22,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:35:22,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:35:22,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:35:22,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:35:22,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:35:22,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:35:22,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:35:22,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:35:22,421 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:35:22,423 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-13 13:35:22,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c178e092/f315cca3e21f4336a15b1a5bac895c18/FLAG3fd96c962 [2020-10-13 13:35:23,067 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:35:23,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-13 13:35:23,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c178e092/f315cca3e21f4336a15b1a5bac895c18/FLAG3fd96c962 [2020-10-13 13:35:23,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c178e092/f315cca3e21f4336a15b1a5bac895c18 [2020-10-13 13:35:23,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:35:23,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:35:23,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:35:23,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:35:23,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:35:23,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:35:23" (1/1) ... [2020-10-13 13:35:23,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:23, skipping insertion in model container [2020-10-13 13:35:23,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:35:23" (1/1) ... [2020-10-13 13:35:23,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:35:23,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:35:23,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:35:23,865 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:35:24,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:35:24,070 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:35:24,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24 WrapperNode [2020-10-13 13:35:24,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:35:24,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:35:24,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:35:24,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:35:24,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (1/1) ... [2020-10-13 13:35:24,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (1/1) ... [2020-10-13 13:35:24,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (1/1) ... [2020-10-13 13:35:24,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (1/1) ... [2020-10-13 13:35:24,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (1/1) ... [2020-10-13 13:35:24,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (1/1) ... [2020-10-13 13:35:24,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (1/1) ... [2020-10-13 13:35:24,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:35:24,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:35:24,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:35:24,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:35:24,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (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 13:35:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:35:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:35:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:35:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:35:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:35:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:35:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:35:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:35:24,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:35:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:35:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:35:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:35:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:35:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:35:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:35:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:35:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:35:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:35:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:35:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:35:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:35:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:35:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:35:24,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:35:25,062 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:35:25,063 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:35:25,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:35:25 BoogieIcfgContainer [2020-10-13 13:35:25,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:35:25,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:35:25,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:35:25,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:35:25,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:35:23" (1/3) ... [2020-10-13 13:35:25,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6912ccfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:35:25, skipping insertion in model container [2020-10-13 13:35:25,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:35:24" (2/3) ... [2020-10-13 13:35:25,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6912ccfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:35:25, skipping insertion in model container [2020-10-13 13:35:25,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:35:25" (3/3) ... [2020-10-13 13:35:25,085 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-13 13:35:25,099 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:35:25,109 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:35:25,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:35:25,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:35:25,163 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:35:25,163 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:35:25,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:35:25,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:35:25,164 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:35:25,164 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:35:25,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:35:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-13 13:35:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 13:35:25,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:35:25,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:35:25,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:35:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:35:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash 715906761, now seen corresponding path program 1 times [2020-10-13 13:35:25,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:35:25,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667994134] [2020-10-13 13:35:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:35:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:25,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:25,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:25,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 13:35:25,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-13 13:35:25,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:35:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:35:26,232 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:35:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:35:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:26,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:26,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:35:26,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:35:26,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:26,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:35:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:26,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:26,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:35:26,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:26,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:35:26,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:26,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:26,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:35:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:26,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:26,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:26,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:35:26,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:26,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:26,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:35:26,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:35:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:26,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:26,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:26,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:26,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:26,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:35:26,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:35:26,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:35:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:26,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:26,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:26,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:26,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:35:26,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:26,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:35:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 13:35:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:26,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:26,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:35:26,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:26,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:35:26,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:35:26,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:35:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:35:26,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667994134] [2020-10-13 13:35:26,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:35:26,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:35:26,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848807938] [2020-10-13 13:35:26,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:35:26,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:35:26,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:35:26,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:35:26,559 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 6 states. [2020-10-13 13:35:27,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:35:27,710 INFO L93 Difference]: Finished difference Result 282 states and 447 transitions. [2020-10-13 13:35:27,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:35:27,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-13 13:35:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:35:27,726 INFO L225 Difference]: With dead ends: 282 [2020-10-13 13:35:27,726 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 13:35:27,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:35:27,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 13:35:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 159. [2020-10-13 13:35:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 13:35:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 255 transitions. [2020-10-13 13:35:27,792 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 255 transitions. Word has length 61 [2020-10-13 13:35:27,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:35:27,793 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 255 transitions. [2020-10-13 13:35:27,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:35:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 255 transitions. [2020-10-13 13:35:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 13:35:27,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:35:27,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:35:27,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:35:27,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:35:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:35:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash 321539975, now seen corresponding path program 1 times [2020-10-13 13:35:27,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:35:27,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711711142] [2020-10-13 13:35:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:35:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:28,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:28,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 13:35:28,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-13 13:35:28,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:35:28,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:35:28,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:35:28,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:28,722 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:35:28,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:35:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:28,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:28,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:35:28,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:28,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:35:28,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:28,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:35:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:28,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:28,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:35:28,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:35:28,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:35:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:35:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:28,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:35:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:28,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:28,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:28,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:28,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:35:28,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:28,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:35:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:28,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:28,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:28,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:35:28,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:35:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:28,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:28,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:28,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:28,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:35:28,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:28,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 13:35:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:28,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:35:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:35:28,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:35:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:35:28,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711711142] [2020-10-13 13:35:28,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:35:28,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:35:28,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657116864] [2020-10-13 13:35:28,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:35:28,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:35:28,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:35:28,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:35:28,997 INFO L87 Difference]: Start difference. First operand 159 states and 255 transitions. Second operand 10 states. [2020-10-13 13:35:29,426 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:35:29,622 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:35:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:35:31,012 INFO L93 Difference]: Finished difference Result 286 states and 450 transitions. [2020-10-13 13:35:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:35:31,013 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-13 13:35:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:35:31,020 INFO L225 Difference]: With dead ends: 286 [2020-10-13 13:35:31,020 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 13:35:31,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:35:31,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 13:35:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 159. [2020-10-13 13:35:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 13:35:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2020-10-13 13:35:31,070 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 61 [2020-10-13 13:35:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:35:31,070 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2020-10-13 13:35:31,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:35:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2020-10-13 13:35:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 13:35:31,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:35:31,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:35:31,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:35:31,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:35:31,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:35:31,075 INFO L82 PathProgramCache]: Analyzing trace with hash -664104160, now seen corresponding path program 1 times [2020-10-13 13:35:31,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:35:31,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560872333] [2020-10-13 13:35:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:35:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:31,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:36,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:36,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 13:35:36,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:35:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 13:35:36,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:35:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:35:36,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:35:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:35:36,320 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:35:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:35:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:36,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:35:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:35:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:36,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:35:36,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:35:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 13:35:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:35:36,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:35:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:35:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:36,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:35:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:36,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:36,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:36,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:36,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:35:36,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:35:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:35:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:35:36,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:35:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:36,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:36,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:36,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:36,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:36,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:35:36,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:36,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:36,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 13:35:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:36,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:36,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:36,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:36,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:35:36,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:36,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:35:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:36,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:36,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:36,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:35:36,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:35:36,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:35:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:35:36,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560872333] [2020-10-13 13:35:36,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:35:36,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:35:36,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857920339] [2020-10-13 13:35:36,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:35:36,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:35:36,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:35:36,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:35:36,647 INFO L87 Difference]: Start difference. First operand 159 states and 231 transitions. Second operand 9 states. [2020-10-13 13:35:36,824 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:35:38,475 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:35:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:35:38,871 INFO L93 Difference]: Finished difference Result 384 states and 581 transitions. [2020-10-13 13:35:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:35:38,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 13:35:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:35:38,876 INFO L225 Difference]: With dead ends: 384 [2020-10-13 13:35:38,876 INFO L226 Difference]: Without dead ends: 287 [2020-10-13 13:35:38,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:35:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-13 13:35:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 249. [2020-10-13 13:35:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 13:35:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 364 transitions. [2020-10-13 13:35:38,917 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 364 transitions. Word has length 84 [2020-10-13 13:35:38,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:35:38,918 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 364 transitions. [2020-10-13 13:35:38,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:35:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 364 transitions. [2020-10-13 13:35:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 13:35:38,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:35:38,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:35:38,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:35:38,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:35:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:35:38,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1365463819, now seen corresponding path program 1 times [2020-10-13 13:35:38,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:35:38,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122713389] [2020-10-13 13:35:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:35:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:38,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:43,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:43,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:35:43,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:35:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:35:43,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:35:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:35:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 13:35:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:44,159 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:35:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:35:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:44,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:44,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:35:44,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:35:44,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:44,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:44,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:44,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:35:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:44,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:44,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 13:35:44,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:44,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:35:44,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:35:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:35:44,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:35:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:44,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:44,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:35:44,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:35:44,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:35:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:35:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:35:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:44,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:44,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:44,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:44,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:35:44,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:35:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:35:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:35:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:44,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:35:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:44,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:44,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:44,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:44,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:35:44,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:44,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:35:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:44,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:35:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:44,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:44,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:44,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:35:44,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:44,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:35:44,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:35:44,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:44,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:35:44,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122713389] [2020-10-13 13:35:44,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:35:44,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:35:44,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868965642] [2020-10-13 13:35:44,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:35:44,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:35:44,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:35:44,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:35:44,412 INFO L87 Difference]: Start difference. First operand 249 states and 364 transitions. Second operand 9 states. [2020-10-13 13:35:44,602 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:35:46,524 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:35:46,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:35:46,703 INFO L93 Difference]: Finished difference Result 677 states and 1014 transitions. [2020-10-13 13:35:46,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:35:46,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-13 13:35:46,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:35:46,708 INFO L225 Difference]: With dead ends: 677 [2020-10-13 13:35:46,708 INFO L226 Difference]: Without dead ends: 490 [2020-10-13 13:35:46,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:35:46,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-13 13:35:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 422. [2020-10-13 13:35:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-13 13:35:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 623 transitions. [2020-10-13 13:35:46,752 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 623 transitions. Word has length 86 [2020-10-13 13:35:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:35:46,753 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 623 transitions. [2020-10-13 13:35:46,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:35:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 623 transitions. [2020-10-13 13:35:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:35:46,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:35:46,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:35:46,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:35:46,756 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:35:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:35:46,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1271464416, now seen corresponding path program 1 times [2020-10-13 13:35:46,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:35:46,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785203768] [2020-10-13 13:35:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:35:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:51,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:51,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:35:51,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:35:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 13:35:51,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:35:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:35:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:35:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:51,976 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:35:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:35:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:51,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:51,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:35:51,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:35:51,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:51,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:35:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:52,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:52,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 13:35:52,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:35:52,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:35:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:35:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:52,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:35:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:52,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:52,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:35:52,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:35:52,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:35:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:35:52,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:52,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:35:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:52,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:52,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:35:52,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:35:52,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:35:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:35:52,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:35:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:35:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:52,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:52,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:35:52,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:35:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:35:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:35:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:35:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:35:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:52,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:52,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:35:52,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:52,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:35:52,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:35:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:35:52,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785203768] [2020-10-13 13:35:52,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:35:52,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:35:52,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923302323] [2020-10-13 13:35:52,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:35:52,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:35:52,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:35:52,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:35:52,319 INFO L87 Difference]: Start difference. First operand 422 states and 623 transitions. Second operand 9 states. [2020-10-13 13:35:52,485 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:35:54,328 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:35:54,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:35:54,515 INFO L93 Difference]: Finished difference Result 1250 states and 1873 transitions. [2020-10-13 13:35:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:35:54,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 13:35:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:35:54,523 INFO L225 Difference]: With dead ends: 1250 [2020-10-13 13:35:54,523 INFO L226 Difference]: Without dead ends: 890 [2020-10-13 13:35:54,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:35:54,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-10-13 13:35:54,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 756. [2020-10-13 13:35:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-10-13 13:35:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1117 transitions. [2020-10-13 13:35:54,603 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1117 transitions. Word has length 88 [2020-10-13 13:35:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:35:54,603 INFO L479 AbstractCegarLoop]: Abstraction has 756 states and 1117 transitions. [2020-10-13 13:35:54,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:35:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1117 transitions. [2020-10-13 13:35:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:35:54,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:35:54,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:35:54,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:35:54,606 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:35:54,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:35:54,607 INFO L82 PathProgramCache]: Analyzing trace with hash -887834443, now seen corresponding path program 1 times [2020-10-13 13:35:54,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:35:54,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168043182] [2020-10-13 13:35:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:35:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:55,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:59,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:59,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:35:59,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:35:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:35:59,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:35:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:35:59,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:35:59,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:59,836 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:35:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:35:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:59,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:35:59,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:35:59,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:35:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:35:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:35:59,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:35:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:35:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:35:59,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:35:59,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 13:35:59,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:35:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:35:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:35:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:35:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:35:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:35:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:00,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:36:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:00,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:00,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:36:00,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:36:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:00,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:36:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:00,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:00,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:00,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:00,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:00,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:36:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:00,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:00,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:00,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:00,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:00,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:00,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:00,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:36:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:00,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:00,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:36:00,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168043182] [2020-10-13 13:36:00,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:00,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:00,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841031815] [2020-10-13 13:36:00,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:00,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:00,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:00,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:00,255 INFO L87 Difference]: Start difference. First operand 756 states and 1117 transitions. Second operand 9 states. [2020-10-13 13:36:00,516 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:00,747 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:36:00,957 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-13 13:36:01,652 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-13 13:36:02,197 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:36:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:04,896 INFO L93 Difference]: Finished difference Result 2630 states and 3929 transitions. [2020-10-13 13:36:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:36:04,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:36:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:04,908 INFO L225 Difference]: With dead ends: 2630 [2020-10-13 13:36:04,908 INFO L226 Difference]: Without dead ends: 1905 [2020-10-13 13:36:04,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:36:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2020-10-13 13:36:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1671. [2020-10-13 13:36:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-10-13 13:36:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2440 transitions. [2020-10-13 13:36:05,045 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2440 transitions. Word has length 90 [2020-10-13 13:36:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:05,047 INFO L479 AbstractCegarLoop]: Abstraction has 1671 states and 2440 transitions. [2020-10-13 13:36:05,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:36:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2440 transitions. [2020-10-13 13:36:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 13:36:05,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:05,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:36:05,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:36:05,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:05,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2120220176, now seen corresponding path program 1 times [2020-10-13 13:36:05,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:05,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276156461] [2020-10-13 13:36:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:06,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:10,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:10,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 13:36:10,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:36:10,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:36:10,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:10,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:36:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:36:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:10,272 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:10,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:10,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:10,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:10,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:10,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:10,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:10,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:10,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:10,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:10,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 13:36:10,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:36:10,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:36:10,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:10,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:36:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:10,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:10,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:36:10,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:36:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:36:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:10,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:10,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:10,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:10,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:10,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:36:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:10,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:10,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:10,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:10,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:10,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:10,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:36:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:10,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:10,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:10,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:10,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:10,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:10,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:36:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:36:10,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276156461] [2020-10-13 13:36:10,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:10,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:10,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838918450] [2020-10-13 13:36:10,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:10,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:10,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:10,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:10,551 INFO L87 Difference]: Start difference. First operand 1671 states and 2440 transitions. Second operand 9 states. [2020-10-13 13:36:11,098 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:13,062 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:13,389 INFO L93 Difference]: Finished difference Result 4008 states and 5967 transitions. [2020-10-13 13:36:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:36:13,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-13 13:36:13,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:13,404 INFO L225 Difference]: With dead ends: 4008 [2020-10-13 13:36:13,405 INFO L226 Difference]: Without dead ends: 2650 [2020-10-13 13:36:13,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:36:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2020-10-13 13:36:13,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2311. [2020-10-13 13:36:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2020-10-13 13:36:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3382 transitions. [2020-10-13 13:36:13,602 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3382 transitions. Word has length 91 [2020-10-13 13:36:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:13,602 INFO L479 AbstractCegarLoop]: Abstraction has 2311 states and 3382 transitions. [2020-10-13 13:36:13,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:36:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3382 transitions. [2020-10-13 13:36:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 13:36:13,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:13,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:36:13,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:36:13,607 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:13,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:13,608 INFO L82 PathProgramCache]: Analyzing trace with hash -2066934997, now seen corresponding path program 1 times [2020-10-13 13:36:13,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:13,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076842277] [2020-10-13 13:36:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:13,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:14,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:18,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:18,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 13:36:18,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:36:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:36:18,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:36:18,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:36:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:18,817 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:18,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:18,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:18,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:18,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:18,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:18,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 13:36:18,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:36:18,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 13:36:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:18,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:36:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:18,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:18,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:36:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:36:18,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:36:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:18,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:18,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:18,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:18,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:18,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:18,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:19,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:36:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:19,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:19,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:19,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:19,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:19,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:19,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:36:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:19,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:19,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:19,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:36:19,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:36:19,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076842277] [2020-10-13 13:36:19,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:19,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:36:19,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705901017] [2020-10-13 13:36:19,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:36:19,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:19,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:36:19,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:36:19,042 INFO L87 Difference]: Start difference. First operand 2311 states and 3382 transitions. Second operand 9 states. [2020-10-13 13:36:19,228 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:21,559 INFO L93 Difference]: Finished difference Result 4607 states and 6862 transitions. [2020-10-13 13:36:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:36:21,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-13 13:36:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:21,577 INFO L225 Difference]: With dead ends: 4607 [2020-10-13 13:36:21,578 INFO L226 Difference]: Without dead ends: 3063 [2020-10-13 13:36:21,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:36:21,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2020-10-13 13:36:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2723. [2020-10-13 13:36:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2723 states. [2020-10-13 13:36:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3990 transitions. [2020-10-13 13:36:21,818 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3990 transitions. Word has length 91 [2020-10-13 13:36:21,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:21,819 INFO L479 AbstractCegarLoop]: Abstraction has 2723 states and 3990 transitions. [2020-10-13 13:36:21,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:36:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3990 transitions. [2020-10-13 13:36:21,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 13:36:21,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:21,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:36:21,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:36:21,822 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:21,822 INFO L82 PathProgramCache]: Analyzing trace with hash -433026031, now seen corresponding path program 1 times [2020-10-13 13:36:21,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:21,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143671786] [2020-10-13 13:36:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:21,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:21,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:22,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:26,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:26,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 13:36:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:36:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:36:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:36:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:36:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:27,008 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:27,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:27,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:27,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:27,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:27,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:27,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:27,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:27,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:36:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:36:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:36:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:36:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:36:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:27,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:27,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:27,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:27,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:27,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:36:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:27,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:27,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:27,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:36:27,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:36:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:27,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:27,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:27,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:27,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:27,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:36:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:36:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:27,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:27,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:27,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:36:27,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:36:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:27,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:36:27,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143671786] [2020-10-13 13:36:27,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:27,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:36:27,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321984483] [2020-10-13 13:36:27,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:36:27,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:27,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:36:27,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:36:27,178 INFO L87 Difference]: Start difference. First operand 2723 states and 3990 transitions. Second operand 7 states. [2020-10-13 13:36:27,382 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:36:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:28,756 INFO L93 Difference]: Finished difference Result 5862 states and 8593 transitions. [2020-10-13 13:36:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:36:28,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-13 13:36:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:28,773 INFO L225 Difference]: With dead ends: 5862 [2020-10-13 13:36:28,773 INFO L226 Difference]: Without dead ends: 3173 [2020-10-13 13:36:28,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:36:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-10-13 13:36:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 2725. [2020-10-13 13:36:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2725 states. [2020-10-13 13:36:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3992 transitions. [2020-10-13 13:36:28,993 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3992 transitions. Word has length 91 [2020-10-13 13:36:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:28,993 INFO L479 AbstractCegarLoop]: Abstraction has 2725 states and 3992 transitions. [2020-10-13 13:36:28,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:36:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3992 transitions. [2020-10-13 13:36:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:36:28,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:28,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:36:28,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:36:28,996 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:28,997 INFO L82 PathProgramCache]: Analyzing trace with hash -457892023, now seen corresponding path program 1 times [2020-10-13 13:36:28,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:28,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235681332] [2020-10-13 13:36:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:29,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:36:33,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:36:33,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4624 [2020-10-13 13:36:33,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:36:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:36:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 13:36:33,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:33,822 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:33,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:33,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:33,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:33,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:33,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 13:36:33,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:36:33,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:33,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:33,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 13:36:33,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:33,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:36:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:33,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:33,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:33,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:33,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:33,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:36:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:33,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:33,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:33,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:33,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:33,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:33,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:34,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:36:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:34,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:34,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:34,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:36:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:34,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:34,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:36:34,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:36:34,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:36:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:36:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:36:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:36:34,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235681332] [2020-10-13 13:36:34,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:34,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:36:34,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731847020] [2020-10-13 13:36:34,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:36:34,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:34,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:36:34,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:36:34,089 INFO L87 Difference]: Start difference. First operand 2725 states and 3992 transitions. Second operand 13 states. [2020-10-13 13:36:34,300 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:36:34,699 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:34,888 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:36,271 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:36:36,451 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:36:38,265 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:39,604 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-13 13:36:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:36:41,722 INFO L93 Difference]: Finished difference Result 15953 states and 24251 transitions. [2020-10-13 13:36:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 13:36:41,723 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-10-13 13:36:41,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:36:41,820 INFO L225 Difference]: With dead ends: 15953 [2020-10-13 13:36:41,821 INFO L226 Difference]: Without dead ends: 13387 [2020-10-13 13:36:41,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=639, Invalid=2223, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 13:36:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13387 states. [2020-10-13 13:36:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13387 to 11395. [2020-10-13 13:36:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11395 states. [2020-10-13 13:36:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11395 states to 11395 states and 16924 transitions. [2020-10-13 13:36:42,657 INFO L78 Accepts]: Start accepts. Automaton has 11395 states and 16924 transitions. Word has length 92 [2020-10-13 13:36:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:36:42,657 INFO L479 AbstractCegarLoop]: Abstraction has 11395 states and 16924 transitions. [2020-10-13 13:36:42,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:36:42,657 INFO L276 IsEmpty]: Start isEmpty. Operand 11395 states and 16924 transitions. [2020-10-13 13:36:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 13:36:42,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:36:42,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:36:42,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:36:42,662 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:36:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:36:42,663 INFO L82 PathProgramCache]: Analyzing trace with hash 538645210, now seen corresponding path program 1 times [2020-10-13 13:36:42,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:36:42,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431725384] [2020-10-13 13:36:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:36:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:47,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:47,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 13:36:47,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:36:47,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:36:47,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:36:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:36:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 13:36:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:47,872 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:36:47,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:36:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:47,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:47,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:47,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:36:47,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:36:47,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:36:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:47,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:36:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:47,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:36:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:47,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:47,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 13:36:47,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:36:47,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:36:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 13:36:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:36:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:47,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:47,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:47,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:36:47,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:36:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:48,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:48,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:36:48,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:48,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:36:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:48,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:48,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:48,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:36:48,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:36:48,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:36:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:36:48,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:36:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:36:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:36:48,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:36:48,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:36:48,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:36:48,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:36:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:36:48,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:36:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:36:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:36:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:36:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:36:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:36:48,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431725384] [2020-10-13 13:36:48,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:36:48,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:36:48,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991500813] [2020-10-13 13:36:48,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:36:48,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:36:48,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:36:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:36:48,189 INFO L87 Difference]: Start difference. First operand 11395 states and 16924 transitions. Second operand 14 states. [2020-10-13 13:36:48,402 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:36:48,857 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:36:49,028 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:49,208 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:36:50,449 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:50,626 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:36:50,802 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:36:50,987 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:36:53,639 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:36:53,895 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:36:54,179 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:00,654 INFO L93 Difference]: Finished difference Result 40410 states and 61269 transitions. [2020-10-13 13:37:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-13 13:37:00,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-13 13:37:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:00,824 INFO L225 Difference]: With dead ends: 40410 [2020-10-13 13:37:00,825 INFO L226 Difference]: Without dead ends: 29174 [2020-10-13 13:37:00,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1675 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1019, Invalid=4093, Unknown=0, NotChecked=0, Total=5112 [2020-10-13 13:37:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29174 states. [2020-10-13 13:37:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29174 to 25501. [2020-10-13 13:37:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25501 states. [2020-10-13 13:37:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25501 states to 25501 states and 38450 transitions. [2020-10-13 13:37:03,696 INFO L78 Accepts]: Start accepts. Automaton has 25501 states and 38450 transitions. Word has length 93 [2020-10-13 13:37:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:03,696 INFO L479 AbstractCegarLoop]: Abstraction has 25501 states and 38450 transitions. [2020-10-13 13:37:03,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:37:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 25501 states and 38450 transitions. [2020-10-13 13:37:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:37:03,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:03,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:37:03,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:37:03,700 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:03,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:03,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1547858382, now seen corresponding path program 1 times [2020-10-13 13:37:03,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:03,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502221206] [2020-10-13 13:37:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:03,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:37:08,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:37:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:37:08,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:37:08,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:37:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:08,935 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:08,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:08,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:08,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:08,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:08,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:08,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 13:37:08,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:37:08,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:08,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:37:08,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:37:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:09,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:09,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:09,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:09,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:09,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:09,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:09,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:09,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:09,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:37:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:09,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:09,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:37:09,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:09,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:37:09,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:09,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:09,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:37:09,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:37:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:09,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:09,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:09,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:09,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:09,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:37:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:37:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:37:09,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502221206] [2020-10-13 13:37:09,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:09,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:09,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397978782] [2020-10-13 13:37:09,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:09,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:09,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:09,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:09,179 INFO L87 Difference]: Start difference. First operand 25501 states and 38450 transitions. Second operand 9 states. [2020-10-13 13:37:09,369 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:13,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:13,618 INFO L93 Difference]: Finished difference Result 60077 states and 91004 transitions. [2020-10-13 13:37:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:37:13,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:37:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:13,812 INFO L225 Difference]: With dead ends: 60077 [2020-10-13 13:37:13,813 INFO L226 Difference]: Without dead ends: 42623 [2020-10-13 13:37:13,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:37:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42623 states. [2020-10-13 13:37:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42623 to 38147. [2020-10-13 13:37:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38147 states. [2020-10-13 13:37:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38147 states to 38147 states and 56989 transitions. [2020-10-13 13:37:16,324 INFO L78 Accepts]: Start accepts. Automaton has 38147 states and 56989 transitions. Word has length 94 [2020-10-13 13:37:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:16,325 INFO L479 AbstractCegarLoop]: Abstraction has 38147 states and 56989 transitions. [2020-10-13 13:37:16,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 38147 states and 56989 transitions. [2020-10-13 13:37:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:37:16,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:16,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:37:16,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:37:16,328 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:16,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash -815948384, now seen corresponding path program 1 times [2020-10-13 13:37:16,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:16,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085307299] [2020-10-13 13:37:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:16,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:16,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:21,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:21,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:37:21,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:37:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:37:21,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:37:21,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:37:21,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:21,531 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:21,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:21,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:21,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:21,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:37:21,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:21,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:21,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:21,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:21,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:21,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 13:37:21,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:37:21,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:21,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:37:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:37:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:21,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:21,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:21,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:21,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:37:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:21,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:21,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:21,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:21,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:21,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:37:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:37:21,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:37:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:37:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:21,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:21,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:21,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:37:21,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:21,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:37:21,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085307299] [2020-10-13 13:37:21,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:21,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:21,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826239229] [2020-10-13 13:37:21,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:21,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:21,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:21,763 INFO L87 Difference]: Start difference. First operand 38147 states and 56989 transitions. Second operand 9 states. [2020-10-13 13:37:21,955 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:26,642 INFO L93 Difference]: Finished difference Result 87553 states and 131325 transitions. [2020-10-13 13:37:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:37:26,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:37:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:26,952 INFO L225 Difference]: With dead ends: 87553 [2020-10-13 13:37:26,953 INFO L226 Difference]: Without dead ends: 61904 [2020-10-13 13:37:27,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:37:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61904 states. [2020-10-13 13:37:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61904 to 56276. [2020-10-13 13:37:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56276 states. [2020-10-13 13:37:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56276 states to 56276 states and 82930 transitions. [2020-10-13 13:37:31,006 INFO L78 Accepts]: Start accepts. Automaton has 56276 states and 82930 transitions. Word has length 94 [2020-10-13 13:37:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:31,006 INFO L479 AbstractCegarLoop]: Abstraction has 56276 states and 82930 transitions. [2020-10-13 13:37:31,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 56276 states and 82930 transitions. [2020-10-13 13:37:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:37:31,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:31,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:37:31,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:37:31,008 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:31,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1314843424, now seen corresponding path program 1 times [2020-10-13 13:37:31,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:31,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464955150] [2020-10-13 13:37:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:31,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:36,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:36,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:37:36,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:37:36,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:37:36,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:37:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:37:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:37:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:36,220 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:36,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:36,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:36,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:36,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:36,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:36,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:36,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 13:37:36,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:37:36,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:36,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:37:36,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 13:37:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:37:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:36,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:36,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:36,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:36,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:36,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:36,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:37:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:36,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:36,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:36,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:36,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:36,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:37:36,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:36,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:37:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:36,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:37:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:36,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:36,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:36,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:37:36,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:36,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:37:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:36,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:36,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:37:36,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:37:36,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:37:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:37:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:37:36,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464955150] [2020-10-13 13:37:36,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:36,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:37:36,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107547157] [2020-10-13 13:37:36,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:37:36,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:36,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:37:36,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:37:36,445 INFO L87 Difference]: Start difference. First operand 56276 states and 82930 transitions. Second operand 10 states. [2020-10-13 13:37:36,631 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:37,077 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:37:38,676 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:38,863 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:37:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:49,757 INFO L93 Difference]: Finished difference Result 187942 states and 278489 transitions. [2020-10-13 13:37:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:37:49,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 13:37:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:50,346 INFO L225 Difference]: With dead ends: 187942 [2020-10-13 13:37:50,346 INFO L226 Difference]: Without dead ends: 131906 [2020-10-13 13:37:50,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:37:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131906 states. [2020-10-13 13:37:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131906 to 119748. [2020-10-13 13:37:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119748 states. [2020-10-13 13:37:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119748 states to 119748 states and 174814 transitions. [2020-10-13 13:37:57,203 INFO L78 Accepts]: Start accepts. Automaton has 119748 states and 174814 transitions. Word has length 94 [2020-10-13 13:37:57,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:57,204 INFO L479 AbstractCegarLoop]: Abstraction has 119748 states and 174814 transitions. [2020-10-13 13:37:57,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:37:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 119748 states and 174814 transitions. [2020-10-13 13:37:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 13:37:57,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:57,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:37:57,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:37:57,206 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:57,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:57,207 INFO L82 PathProgramCache]: Analyzing trace with hash -444500655, now seen corresponding path program 1 times [2020-10-13 13:37:57,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:57,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886119893] [2020-10-13 13:37:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:57,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:57,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:02,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:38:02,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:38:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:38:02,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:38:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 13:38:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:38:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:02,417 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:02,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:02,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:02,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:02,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:02,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:02,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:02,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:02,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:02,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 13:38:02,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:02,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:38:02,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:02,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:38:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:38:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:02,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:02,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:02,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:02,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:02,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:38:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:02,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:02,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:02,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:38:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:02,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:02,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:02,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:02,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:02,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:02,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:02,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:02,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:02,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:02,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:02,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:38:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:38:02,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886119893] [2020-10-13 13:38:02,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:02,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:38:02,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592618599] [2020-10-13 13:38:02,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:38:02,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:02,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:38:02,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:38:02,664 INFO L87 Difference]: Start difference. First operand 119748 states and 174814 transitions. Second operand 10 states. [2020-10-13 13:38:02,861 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:03,281 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:04,550 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:04,748 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:06,637 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-13 13:38:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:23,583 INFO L93 Difference]: Finished difference Result 458776 states and 673515 transitions. [2020-10-13 13:38:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:38:23,584 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-13 13:38:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:25,010 INFO L225 Difference]: With dead ends: 458776 [2020-10-13 13:38:25,011 INFO L226 Difference]: Without dead ends: 339268 [2020-10-13 13:38:25,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:38:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339268 states.