/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:46:49,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:46:49,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:46:49,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:46:49,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:46:49,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:46:49,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:46:49,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:46:49,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:46:49,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:46:49,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:46:49,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:46:49,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:46:49,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:46:49,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:46:49,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:46:49,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:46:49,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:46:49,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:46:49,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:46:49,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:46:49,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:46:49,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:46:49,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:46:49,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:46:49,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:46:49,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:46:49,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:46:49,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:46:49,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:46:49,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:46:49,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:46:49,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:46:49,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:46:49,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:46:49,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:46:49,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:46:49,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:46:49,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:46:49,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:46:49,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:46:49,985 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 [2020-09-25 07:46:50,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:46:50,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:46:50,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:46:50,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:46:50,017 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:46:50,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:46:50,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:46:50,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:46:50,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:46:50,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:46:50,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:46:50,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:46:50,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:46:50,019 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:46:50,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:46:50,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:46:50,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:46:50,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:46:50,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:46:50,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:46:50,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:46:50,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:46:50,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:46:50,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:46:50,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:46:50,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:46:50,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:46:50,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:46:50,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:46:50,024 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:46:50,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:46:50,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:46:50,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:46:50,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:46:50,524 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:46:50,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-09-25 07:46:50,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5af123515/5f0f562c0e444cda854fd66a56605403/FLAG6a835fe7d [2020-09-25 07:46:51,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:46:51,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_15x0-1.c [2020-09-25 07:46:51,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5af123515/5f0f562c0e444cda854fd66a56605403/FLAG6a835fe7d [2020-09-25 07:46:51,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5af123515/5f0f562c0e444cda854fd66a56605403 [2020-09-25 07:46:51,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:46:51,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:46:51,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:46:51,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:46:51,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:46:51,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7cadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51, skipping insertion in model container [2020-09-25 07:46:51,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:46:51,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:46:51,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:46:51,794 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:46:51,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:46:51,829 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:46:51,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51 WrapperNode [2020-09-25 07:46:51,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:46:51,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:46:51,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:46:51,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:46:51,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (1/1) ... [2020-09-25 07:46:51,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:46:51,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:46:51,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:46:51,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:46:51,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (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 [2020-09-25 07:46:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:46:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:46:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 07:46:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:46:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:46:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 07:46:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:46:52,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:46:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:46:52,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:46:52,247 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:46:52,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:46:52 BoogieIcfgContainer [2020-09-25 07:46:52,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:46:52,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:46:52,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:46:52,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:46:52,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:46:51" (1/3) ... [2020-09-25 07:46:52,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12303a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:46:52, skipping insertion in model container [2020-09-25 07:46:52,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:46:51" (2/3) ... [2020-09-25 07:46:52,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12303a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:46:52, skipping insertion in model container [2020-09-25 07:46:52,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:46:52" (3/3) ... [2020-09-25 07:46:52,266 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2020-09-25 07:46:52,287 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:46:52,300 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:46:52,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:46:52,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:46:52,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:46:52,365 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:46:52,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:46:52,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:46:52,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:46:52,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:46:52,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:46:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 07:46:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 07:46:52,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:52,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:52,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:52,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:52,414 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 07:46:52,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:52,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433768096] [2020-09-25 07:46:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:52,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:52,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:46:52,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:52,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 07:46:52,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:52,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:46:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:46:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:46:53,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:53,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:53,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:46:53,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:53,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:53,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:46:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:53,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:46:53,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 07:46:53,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:53,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:53,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:46:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:46:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:46:53,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433768096] [2020-09-25 07:46:53,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:46:53,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:46:53,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798473447] [2020-09-25 07:46:53,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:46:53,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:53,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:46:53,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:46:53,246 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2020-09-25 07:46:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:53,416 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 07:46:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:46:53,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-25 07:46:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:53,433 INFO L225 Difference]: With dead ends: 39 [2020-09-25 07:46:53,433 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 07:46:53,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:46:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 07:46:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 07:46:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 07:46:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 07:46:53,493 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 07:46:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:53,493 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 07:46:53,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:46:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 07:46:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 07:46:53,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:53,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:53,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:46:53,497 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:53,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:53,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 07:46:53,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:53,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530207563] [2020-09-25 07:46:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:53,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:53,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:53,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 07:46:53,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 07:46:53,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:53,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:53,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:46:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:46:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:53,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:46:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:53,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:53,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 07:46:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:46:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:54,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:54,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:46:54,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 07:46:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:54,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:46:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:46:54,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:54,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:54,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:46:54,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:46:54,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:54,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:46:54,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 07:46:54,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530207563] [2020-09-25 07:46:54,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:54,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:46:54,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957414153] [2020-09-25 07:46:54,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:46:54,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:54,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:46:54,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:46:54,173 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-09-25 07:46:54,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:54,233 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 07:46:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:46:54,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 07:46:54,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:54,236 INFO L225 Difference]: With dead ends: 36 [2020-09-25 07:46:54,236 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 07:46:54,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:46:54,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 07:46:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 07:46:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 07:46:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 07:46:54,245 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 07:46:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:54,246 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 07:46:54,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:46:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 07:46:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 07:46:54,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:54,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:54,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:46:54,248 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:54,249 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 07:46:54,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:54,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086321025] [2020-09-25 07:46:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:54,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:54,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 07:46:54,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-09-25 07:46:54,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:54,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:54,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:46:54,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:54,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:46:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:54,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:54,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:54,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:54,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:46:54,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:54,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:54,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:46:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:54,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:54,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:54,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:46:54,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:54,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 07:46:54,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:54,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:46:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:54,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:46:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:55,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:55,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:46:55,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 07:46:55,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:55,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:46:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 07:46:55,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:55,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:55,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:46:55,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:46:55,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:55,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:55,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:46:55,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 07:46:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 07:46:55,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086321025] [2020-09-25 07:46:55,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:55,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:46:55,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798309355] [2020-09-25 07:46:55,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:46:55,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:55,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:46:55,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:46:55,116 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 07:46:55,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:55,224 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-09-25 07:46:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:46:55,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 07:46:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:55,227 INFO L225 Difference]: With dead ends: 41 [2020-09-25 07:46:55,228 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 07:46:55,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:46:55,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 07:46:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 07:46:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 07:46:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 07:46:55,237 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 36 [2020-09-25 07:46:55,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:55,238 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 07:46:55,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:46:55,238 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 07:46:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 07:46:55,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:55,242 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:55,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:46:55,243 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:55,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1021564803, now seen corresponding path program 3 times [2020-09-25 07:46:55,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:55,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382061213] [2020-09-25 07:46:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:56,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:56,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 07:46:56,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-09-25 07:46:56,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:56,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:46:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:46:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:56,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:56,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:56,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:56,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:56,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:46:56,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:56,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:56,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:46:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:56,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:56,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:46:56,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 07:46:56,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:56,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:46:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 07:46:56,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:56,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:56,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:46:56,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:56,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 07:46:56,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:56,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:56,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:46:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:56,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:56,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:56,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:46:56,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:56,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 07:46:56,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:56,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:56,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:46:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:56,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:56,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:46:56,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:56,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:46:56,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:56,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:56,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:56,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:46:56,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 07:46:56,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382061213] [2020-09-25 07:46:56,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:56,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:46:56,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961810027] [2020-09-25 07:46:56,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:46:56,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:56,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:46:56,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:46:56,788 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 9 states. [2020-09-25 07:46:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:56,876 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-09-25 07:46:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:46:56,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 07:46:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:56,878 INFO L225 Difference]: With dead ends: 46 [2020-09-25 07:46:56,878 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 07:46:56,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:46:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 07:46:56,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 07:46:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 07:46:56,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-09-25 07:46:56,887 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 45 [2020-09-25 07:46:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:56,887 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-09-25 07:46:56,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:46:56,888 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-09-25 07:46:56,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 07:46:56,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:56,889 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:56,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:46:56,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash -263249715, now seen corresponding path program 4 times [2020-09-25 07:46:56,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:56,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072836614] [2020-09-25 07:46:56,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:57,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:58,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:58,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:46:58,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:46:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-09-25 07:46:58,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:58,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:46:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:46:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 07:46:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:46:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:58,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:58,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:46:58,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:46:58,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:58,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:46:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:46:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:58,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:46:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:58,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:58,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:46:58,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 07:46:58,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:58,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:46:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:46:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 07:46:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:58,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:58,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:46:58,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 07:46:58,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:58,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:46:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:46:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:58,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:58,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:46:58,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:58,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 07:46:58,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:58,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:46:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:46:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:58,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:58,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:46:58,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:58,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 07:46:58,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:58,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:58,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:46:58,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:46:58,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:58,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:46:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:58,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:46:58,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:46:58,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:46:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:46:58,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:46:58,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:46:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:46:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:46:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:46:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:46:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 07:46:58,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072836614] [2020-09-25 07:46:58,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:46:58,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:46:58,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34426891] [2020-09-25 07:46:58,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:46:58,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:46:58,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:46:58,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:46:58,824 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 9 states. [2020-09-25 07:46:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:46:58,932 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 07:46:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:46:58,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-09-25 07:46:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:46:58,935 INFO L225 Difference]: With dead ends: 51 [2020-09-25 07:46:58,935 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 07:46:58,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:46:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 07:46:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 07:46:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 07:46:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-09-25 07:46:58,943 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 54 [2020-09-25 07:46:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:46:58,944 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-09-25 07:46:58,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:46:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-09-25 07:46:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 07:46:58,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:46:58,946 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:46:58,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:46:58,946 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:46:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:46:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1884999187, now seen corresponding path program 5 times [2020-09-25 07:46:58,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:46:58,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919229866] [2020-09-25 07:46:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:46:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:46:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:46:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:00,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:00,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 07:47:00,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:47:00,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1709 [2020-09-25 07:47:00,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:00,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:47:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:47:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:47:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:00,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:47:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:00,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:00,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:47:00,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:00,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:47:00,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:00,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:47:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:00,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:47:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:00,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:47:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:00,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:01,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:47:01,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 07:47:01,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:01,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:47:01,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:47:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 07:47:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:01,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:01,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:01,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:47:01,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 07:47:01,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:01,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:47:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 07:47:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:01,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:01,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:01,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:47:01,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 07:47:01,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:01,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:47:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:47:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:01,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:01,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:47:01,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 07:47:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:01,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:47:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:47:01,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:01,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:01,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:01,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:47:01,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 07:47:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:01,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:47:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:47:01,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:47:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:01,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:01,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:01,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:47:01,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:47:01,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:01,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:47:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:01,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:47:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:47:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-25 07:47:01,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919229866] [2020-09-25 07:47:01,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:47:01,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 07:47:01,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219749043] [2020-09-25 07:47:01,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 07:47:01,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:47:01,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 07:47:01,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:47:01,821 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-09-25 07:47:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:47:01,982 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2020-09-25 07:47:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:47:01,983 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 07:47:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:47:01,984 INFO L225 Difference]: With dead ends: 56 [2020-09-25 07:47:01,984 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 07:47:01,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:47:01,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 07:47:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 07:47:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 07:47:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 07:47:01,993 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 63 [2020-09-25 07:47:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:47:01,994 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 07:47:01,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 07:47:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 07:47:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 07:47:01,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:47:01,996 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:47:01,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:47:01,996 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:47:01,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:47:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash -441437769, now seen corresponding path program 6 times [2020-09-25 07:47:01,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:47:01,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253445988] [2020-09-25 07:47:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:47:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:03,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:03,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-25 07:47:03,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:47:03,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-09-25 07:47:03,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:03,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 07:47:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:47:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 07:47:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:47:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:04,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:04,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:47:04,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:04,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:47:04,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:04,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:04,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:47:04,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:04,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:47:04,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:04,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:47:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:04,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:04,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:47:04,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-25 07:47:04,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:04,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 07:47:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:47:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:47:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:04,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:04,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:47:04,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:04,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 07:47:04,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:04,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:47:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:04,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:47:04,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:04,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:05,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:05,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:47:05,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:05,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 07:47:05,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:05,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:47:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 07:47:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:05,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:05,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:47:05,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 07:47:05,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:05,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:47:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:47:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:05,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:05,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:47:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 07:47:05,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:05,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:47:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:47:05,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:05,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:47:05,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:47:05,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:05,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:47:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:47:05,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:05,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:05,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:05,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:05,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:47:05,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:47:05,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:05,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:47:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:47:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 21 proven. 94 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 07:47:05,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253445988] [2020-09-25 07:47:05,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:47:05,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:47:05,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087008175] [2020-09-25 07:47:05,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:47:05,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:47:05,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:47:05,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:47:05,479 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 12 states. [2020-09-25 07:47:05,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:47:05,641 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-09-25 07:47:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:47:05,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-25 07:47:05,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:47:05,643 INFO L225 Difference]: With dead ends: 61 [2020-09-25 07:47:05,643 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 07:47:05,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:47:05,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 07:47:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-25 07:47:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 07:47:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-09-25 07:47:05,651 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 72 [2020-09-25 07:47:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:47:05,652 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-09-25 07:47:05,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:47:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-09-25 07:47:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 07:47:05,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:47:05,654 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:47:05,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:47:05,654 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:47:05,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:47:05,655 INFO L82 PathProgramCache]: Analyzing trace with hash 999943849, now seen corresponding path program 7 times [2020-09-25 07:47:05,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:47:05,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115120708] [2020-09-25 07:47:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:47:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:07,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:07,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 07:47:07,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:47:07,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-09-25 07:47:07,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:07,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:07,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 07:47:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:47:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:47:07,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:07,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:47:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:07,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:07,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:47:07,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:47:07,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:07,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:47:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:07,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:47:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:47:07,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:47:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:07,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:08,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:08,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:47:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-25 07:47:08,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:08,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 07:47:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:47:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 07:47:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:08,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:08,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:47:08,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:08,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-09-25 07:47:08,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:08,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:47:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:08,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:47:08,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:08,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:08,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:08,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:47:08,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 07:47:08,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:08,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:47:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:47:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:09,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:09,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:47:09,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 07:47:09,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:09,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:47:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 07:47:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:09,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:09,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:47:09,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:09,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 07:47:09,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:09,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:47:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:09,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:47:09,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:09,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:09,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:09,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:47:09,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:09,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 07:47:09,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:09,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:47:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:09,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:47:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:09,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:09,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:09,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:47:09,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:09,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 07:47:09,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:09,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:47:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:47:09,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:09,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:09,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:09,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:47:09,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:47:09,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:09,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:47:09,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:47:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 24 proven. 137 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 07:47:09,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115120708] [2020-09-25 07:47:09,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:47:09,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 07:47:09,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709146394] [2020-09-25 07:47:09,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 07:47:09,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:47:09,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 07:47:09,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:47:09,605 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 13 states. [2020-09-25 07:47:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:47:09,777 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-09-25 07:47:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:47:09,778 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 07:47:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:47:09,779 INFO L225 Difference]: With dead ends: 66 [2020-09-25 07:47:09,779 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 07:47:09,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 07:47:09,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 07:47:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 07:47:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 07:47:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 07:47:09,787 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 81 [2020-09-25 07:47:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:47:09,787 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 07:47:09,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 07:47:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 07:47:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 07:47:09,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:47:09,789 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:47:09,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:47:09,790 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:47:09,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:47:09,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1356134305, now seen corresponding path program 8 times [2020-09-25 07:47:09,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:47:09,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672893623] [2020-09-25 07:47:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:47:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:13,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:13,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 07:47:13,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:47:13,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3414 [2020-09-25 07:47:13,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:13,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 07:47:13,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:47:13,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:47:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:13,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:47:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:13,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:13,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:47:13,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:13,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:47:13,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:13,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:47:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:47:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:13,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:47:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:13,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:13,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 07:47:13,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-09-25 07:47:13,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:13,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 07:47:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:47:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:47:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:13,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:14,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:14,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:47:14,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-25 07:47:14,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:14,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:47:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:14,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:47:14,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:14,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:14,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:47:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 07:47:14,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:14,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:47:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:14,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:47:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:14,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:15,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:15,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:47:15,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 07:47:15,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:15,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:47:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:15,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:47:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:15,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:15,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:15,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:15,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:47:15,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:15,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 07:47:15,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:15,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:47:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 07:47:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:15,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:15,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:15,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:47:15,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 07:47:15,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:15,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:47:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:15,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:47:15,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:15,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:15,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:15,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:47:15,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:15,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 07:47:15,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:15,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:47:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:47:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:15,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:15,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:47:15,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:15,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:47:15,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:15,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:15,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:47:15,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:15,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:47:15,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:15,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:15,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:15,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:47:15,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:15,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:47:15,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:15,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:47:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:47:15,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:47:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 30 proven. 177 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 07:47:15,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672893623] [2020-09-25 07:47:15,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:47:15,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 07:47:15,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701715210] [2020-09-25 07:47:15,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 07:47:15,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:47:15,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 07:47:15,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:47:15,778 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 14 states. [2020-09-25 07:47:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:47:15,946 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-25 07:47:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:47:15,946 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-09-25 07:47:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:47:15,948 INFO L225 Difference]: With dead ends: 71 [2020-09-25 07:47:15,948 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 07:47:15,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-09-25 07:47:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 07:47:15,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 07:47:15,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 07:47:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-09-25 07:47:15,967 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 90 [2020-09-25 07:47:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:47:15,968 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-09-25 07:47:15,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 07:47:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-09-25 07:47:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 07:47:15,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:47:15,969 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:47:15,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 07:47:15,969 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:47:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:47:15,972 INFO L82 PathProgramCache]: Analyzing trace with hash -928437697, now seen corresponding path program 9 times [2020-09-25 07:47:15,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:47:15,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304493435] [2020-09-25 07:47:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:47:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:18,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:18,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 07:47:18,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:47:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-09-25 07:47:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:18,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 07:47:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:47:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 07:47:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:47:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:18,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:47:18,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:47:18,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:18,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:47:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:47:18,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:18,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:47:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:18,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:18,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:18,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 07:47:18,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-09-25 07:47:18,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:18,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 07:47:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:47:18,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:47:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:18,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:19,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:19,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 07:47:19,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:19,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-25 07:47:19,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:19,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 07:47:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:47:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:19,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:19,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:19,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:47:19,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-09-25 07:47:19,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:19,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:19,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:47:19,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:19,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:47:19,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:19,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:19,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:47:19,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 07:47:19,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:19,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:47:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:47:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:20,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:47:20,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 07:47:20,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:20,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:47:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:47:20,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:20,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:20,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:20,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:47:20,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:20,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 07:47:20,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:20,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:47:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:20,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 07:47:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:20,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:20,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:47:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 07:47:20,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:20,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:47:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:47:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:20,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:20,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:20,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:47:20,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 07:47:20,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:20,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:47:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:47:20,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:20,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:20,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:47:20,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:20,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:47:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:20,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:47:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:47:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:20,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:20,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:47:20,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:20,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:47:20,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:20,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:47:20,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:47:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 24 proven. 244 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-25 07:47:20,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304493435] [2020-09-25 07:47:20,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:47:20,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 07:47:20,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924969534] [2020-09-25 07:47:20,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 07:47:20,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:47:20,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 07:47:20,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:47:20,786 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-09-25 07:47:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:47:20,929 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-09-25 07:47:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:47:20,930 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2020-09-25 07:47:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:47:20,931 INFO L225 Difference]: With dead ends: 76 [2020-09-25 07:47:20,931 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 07:47:20,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 07:47:20,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 07:47:20,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 07:47:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 07:47:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-25 07:47:20,938 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 99 [2020-09-25 07:47:20,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:47:20,939 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-25 07:47:20,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 07:47:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-25 07:47:20,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 07:47:20,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:47:20,940 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:47:20,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 07:47:20,941 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:47:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:47:20,941 INFO L82 PathProgramCache]: Analyzing trace with hash -276966773, now seen corresponding path program 10 times [2020-09-25 07:47:20,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:47:20,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616499775] [2020-09-25 07:47:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:47:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:21,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:24,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:24,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 07:47:24,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:47:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3248 [2020-09-25 07:47:24,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:24,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 07:47:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:47:24,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 07:47:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:47:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:24,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:47:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:47:24,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:24,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:47:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:47:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:24,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:47:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 07:47:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-09-25 07:47:24,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:24,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 07:47:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:47:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 07:47:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:24,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:25,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:25,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 07:47:25,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-09-25 07:47:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:25,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 07:47:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:47:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:25,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:25,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 07:47:25,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-25 07:47:25,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:25,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 07:47:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:47:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:25,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:26,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:26,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:26,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:47:26,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-25 07:47:26,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:26,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:47:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:47:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:26,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:26,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:26,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:26,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:47:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-25 07:47:26,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:26,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:47:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:47:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:26,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:27,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:27,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:47:27,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:27,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 07:47:27,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:27,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:47:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:47:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:27,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:27,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:27,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:47:27,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:27,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 07:47:27,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:27,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:47:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 07:47:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:27,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:27,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:27,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:47:27,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:27,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 07:47:27,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:27,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:47:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:27,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:47:27,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:27,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:27,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:47:27,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 07:47:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:27,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:47:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:27,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:47:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:27,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:27,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:47:27,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:47:27,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:27,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:27,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:47:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:47:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:27,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:27,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:47:27,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:27,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:47:27,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:27,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:47:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:47:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 18 proven. 296 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-25 07:47:27,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616499775] [2020-09-25 07:47:27,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:47:27,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:47:27,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313696188] [2020-09-25 07:47:27,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:47:27,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:47:27,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:47:27,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:47:27,832 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 16 states. [2020-09-25 07:47:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:47:28,044 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 07:47:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:47:28,044 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 07:47:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:47:28,046 INFO L225 Difference]: With dead ends: 81 [2020-09-25 07:47:28,046 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 07:47:28,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-09-25 07:47:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 07:47:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 07:47:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 07:47:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-09-25 07:47:28,055 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 108 [2020-09-25 07:47:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:47:28,055 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-09-25 07:47:28,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 07:47:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-09-25 07:47:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 07:47:28,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:47:28,057 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:47:28,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 07:47:28,057 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:47:28,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:47:28,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1749540651, now seen corresponding path program 11 times [2020-09-25 07:47:28,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:47:28,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456820088] [2020-09-25 07:47:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:47:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:28,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:32,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 07:47:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:47:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4115 [2020-09-25 07:47:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:32,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 07:47:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:47:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:47:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:32,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:47:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:32,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:32,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:47:32,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:47:32,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:32,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:47:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:47:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:32,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:47:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:32,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:33,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 07:47:33,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-09-25 07:47:33,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:33,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 07:47:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:47:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 07:47:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:33,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:33,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:33,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 07:47:33,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:33,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-09-25 07:47:33,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:33,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:33,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 07:47:33,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:33,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 07:47:33,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:33,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:34,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 07:47:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-09-25 07:47:34,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:34,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 07:47:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:47:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:34,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 07:47:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 07:47:34,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:34,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 07:47:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:47:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:34,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:35,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:35,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:47:35,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 07:47:35,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:35,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:47:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:47:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:35,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:35,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:35,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:47:35,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:35,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 07:47:35,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:35,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:47:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:47:35,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:35,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:35,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:35,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 07:47:35,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 07:47:35,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:35,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:47:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:47:35,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:35,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:36,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:36,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:47:36,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 07:47:36,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:36,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:47:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 07:47:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:36,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:36,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:36,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:47:36,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:36,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 07:47:36,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:36,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:36,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:47:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:36,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:47:36,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:36,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:36,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:36,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:36,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:47:36,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 07:47:36,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:36,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:47:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:36,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:47:36,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:36,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:36,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 07:47:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:47:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:36,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:47:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:47:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:36,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:47:36,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:47:36,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:36,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:47:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:47:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 30 proven. 367 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-09-25 07:47:36,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456820088] [2020-09-25 07:47:36,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:47:36,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 07:47:36,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25587877] [2020-09-25 07:47:36,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 07:47:36,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:47:36,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 07:47:36,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:47:36,536 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 17 states. [2020-09-25 07:47:36,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:47:36,766 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-09-25 07:47:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 07:47:36,766 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-09-25 07:47:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:47:36,768 INFO L225 Difference]: With dead ends: 86 [2020-09-25 07:47:36,768 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 07:47:36,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-09-25 07:47:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 07:47:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-25 07:47:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 07:47:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-09-25 07:47:36,779 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 117 [2020-09-25 07:47:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:47:36,779 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-09-25 07:47:36,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 07:47:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-09-25 07:47:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 07:47:36,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:47:36,782 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:47:36,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 07:47:36,782 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:47:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:47:36,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1141580405, now seen corresponding path program 12 times [2020-09-25 07:47:36,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:47:36,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228580856] [2020-09-25 07:47:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:47:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:40,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:40,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 07:47:40,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:47:40,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3694 [2020-09-25 07:47:40,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:40,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 07:47:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:47:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 07:47:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:40,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:47:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:40,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:40,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:47:40,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:40,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:47:40,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:40,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:40,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:47:40,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:40,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:47:40,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:40,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 07:47:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:41,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:41,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 07:47:41,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:41,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-09-25 07:47:41,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:41,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 07:47:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:47:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 07:47:41,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:41,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:42,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:42,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 07:47:42,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-09-25 07:47:42,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:42,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 07:47:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:42,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 07:47:42,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:47:42,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:43,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:43,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 07:47:43,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-09-25 07:47:43,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:43,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 07:47:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 07:47:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:43,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:43,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:43,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 07:47:43,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-09-25 07:47:43,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:43,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 07:47:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:47:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:44,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:44,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 07:47:44,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-25 07:47:44,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:44,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 07:47:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:47:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:44,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:47:44,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:47:44,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 07:47:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:47:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-25 07:47:44,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:47:44,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:47:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 07:47:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:47:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:47:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:47:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 07:47:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:47:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking...