/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:48:15,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:48:15,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:48:15,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:48:15,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:48:15,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:48:15,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:48:15,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:48:15,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:48:15,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:48:15,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:48:15,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:48:15,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:48:15,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:48:15,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:48:15,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:48:15,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:48:15,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:48:15,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:48:15,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:48:15,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:48:15,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:48:15,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:48:15,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:48:15,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:48:15,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:48:15,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:48:15,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:48:15,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:48:15,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:48:15,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:48:15,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:48:15,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:48:15,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:48:15,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:48:15,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:48:15,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:48:15,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:48:15,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:48:15,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:48:15,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:48:15,930 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 01:48:15,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:48:15,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:48:15,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:48:15,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:48:15,977 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:48:15,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:48:15,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:48:15,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:48:15,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:48:15,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:48:15,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:48:15,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:48:15,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:48:15,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:48:15,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:48:15,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:48:15,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:48:15,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:48:15,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:48:15,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:48:15,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:48:15,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:48:15,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:48:15,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:48:15,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:48:15,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:48:15,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:48:15,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:48:15,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:48:15,984 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 01:48:16,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:48:16,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:48:16,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:48:16,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:48:16,475 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:48:16,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-09-25 01:48:16,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34e33773d/6438a4d7a77c4bee957a817def10f657/FLAG92f8c0ffb [2020-09-25 01:48:17,143 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:48:17,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-09-25 01:48:17,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34e33773d/6438a4d7a77c4bee957a817def10f657/FLAG92f8c0ffb [2020-09-25 01:48:17,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34e33773d/6438a4d7a77c4bee957a817def10f657 [2020-09-25 01:48:17,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:48:17,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:48:17,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:48:17,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:48:17,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:48:17,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:48:17" (1/1) ... [2020-09-25 01:48:17,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:17, skipping insertion in model container [2020-09-25 01:48:17,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:48:17" (1/1) ... [2020-09-25 01:48:17,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:48:17,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:48:18,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:48:18,082 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:48:18,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:48:18,228 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:48:18,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18 WrapperNode [2020-09-25 01:48:18,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:48:18,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:48:18,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:48:18,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:48:18,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (1/1) ... [2020-09-25 01:48:18,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (1/1) ... [2020-09-25 01:48:18,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (1/1) ... [2020-09-25 01:48:18,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (1/1) ... [2020-09-25 01:48:18,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (1/1) ... [2020-09-25 01:48:18,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (1/1) ... [2020-09-25 01:48:18,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (1/1) ... [2020-09-25 01:48:18,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:48:18,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:48:18,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:48:18,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:48:18,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (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 01:48:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:48:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:48:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:48:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:48:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:48:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:48:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:48:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:48:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:48:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:48:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:48:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:48:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:48:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:48:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:48:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:48:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:48:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:48:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:48:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:48:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:48:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:48:18,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:48:18,476 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:48:18,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:48:18,477 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:48:18,477 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:48:18,477 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 01:48:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:48:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:48:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:48:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:48:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:48:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:48:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:48:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:48:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:48:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:48:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-25 01:48:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-25 01:48:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:48:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:48:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:48:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:48:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:48:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:48:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:48:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:48:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:48:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:48:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:48:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:48:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:48:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:48:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:48:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:48:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:48:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:48:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:48:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:48:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:48:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:48:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:48:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:48:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:48:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:48:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:48:18,485 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:48:18,485 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:48:18,485 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:48:18,486 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:48:18,487 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:48:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:48:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:48:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:48:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:48:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:48:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-25 01:48:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:48:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:48:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:48:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:48:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:48:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:48:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:48:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-25 01:48:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:48:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:48:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:48:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 01:48:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:48:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:48:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:48:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:48:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:48:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:48:19,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:48:19,857 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:48:19,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:48:19 BoogieIcfgContainer [2020-09-25 01:48:19,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:48:19,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:48:19,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:48:19,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:48:19,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:48:17" (1/3) ... [2020-09-25 01:48:19,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567df8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:48:19, skipping insertion in model container [2020-09-25 01:48:19,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:48:18" (2/3) ... [2020-09-25 01:48:19,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567df8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:48:19, skipping insertion in model container [2020-09-25 01:48:19,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:48:19" (3/3) ... [2020-09-25 01:48:19,875 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-09-25 01:48:19,887 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:48:19,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:48:19,922 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:48:19,955 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:48:19,955 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:48:19,955 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:48:19,955 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:48:19,955 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:48:19,956 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:48:19,956 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:48:19,956 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:48:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states. [2020-09-25 01:48:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 01:48:20,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:48:20,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:48:20,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:48:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:48:20,014 INFO L82 PathProgramCache]: Analyzing trace with hash -416095138, now seen corresponding path program 1 times [2020-09-25 01:48:20,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:48:20,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319632541] [2020-09-25 01:48:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:48:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:24,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:25,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 01:48:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:48:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 01:48:25,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-25 01:48:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:48:25,836 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:48:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:48:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:25,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:25,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:48:25,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:25,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 01:48:25,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:25,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:48:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:26,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:26,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:26,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:26,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:26,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:48:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:26,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:26,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:26,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:26,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:48:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:26,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:26,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:26,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:26,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:48:26,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 27 [2020-09-25 01:48:26,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:48:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:26,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:48:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:26,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:26,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:26,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:26,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:26,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:26,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:26,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:26,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:26,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-25 01:48:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:26,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:26,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:26,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:26,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 01:48:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:26,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:26,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:26,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:26,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:26,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:26,148 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 01:48:26,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319632541] [2020-09-25 01:48:26,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:48:26,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:48:26,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886154052] [2020-09-25 01:48:26,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:48:26,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:48:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:48:26,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:48:26,181 INFO L87 Difference]: Start difference. First operand 323 states. Second operand 4 states. [2020-09-25 01:48:27,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:48:27,605 INFO L93 Difference]: Finished difference Result 510 states and 605 transitions. [2020-09-25 01:48:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:48:27,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-25 01:48:27,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:48:27,634 INFO L225 Difference]: With dead ends: 510 [2020-09-25 01:48:27,634 INFO L226 Difference]: Without dead ends: 323 [2020-09-25 01:48:27,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:48:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-25 01:48:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 272. [2020-09-25 01:48:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 01:48:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-09-25 01:48:27,771 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 148 [2020-09-25 01:48:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:48:27,772 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-09-25 01:48:27,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:48:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-09-25 01:48:27,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 01:48:27,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:48:27,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:48:27,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:48:27,786 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:48:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:48:27,787 INFO L82 PathProgramCache]: Analyzing trace with hash 795504542, now seen corresponding path program 1 times [2020-09-25 01:48:27,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:48:27,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309729750] [2020-09-25 01:48:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:48:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:28,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:29,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:32,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:32,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 01:48:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:48:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 01:48:32,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 01:48:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:48:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:33,227 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:48:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:48:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:33,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:33,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:48:33,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 01:48:33,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:33,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:33,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:48:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:33,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:33,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:33,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:33,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:48:33,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:33,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:33,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:33,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:48:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:33,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:33,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:33,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:33,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:33,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:33,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:33,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:48:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:33,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:33,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:33,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:33,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:48:33,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:33,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:33,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:33,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:48:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:33,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:33,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:33,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:48:33,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:48:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:33,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:33,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:33,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:33,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 01:48:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:33,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:33,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:33,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:33,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 01:48:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:33,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:33,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:33,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:33,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:33,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:33,482 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 01:48:33,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309729750] [2020-09-25 01:48:33,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:48:33,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:48:33,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115242558] [2020-09-25 01:48:33,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:48:33,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:48:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:48:33,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:48:33,487 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 5 states. [2020-09-25 01:48:34,227 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:48:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:48:35,489 INFO L93 Difference]: Finished difference Result 435 states and 496 transitions. [2020-09-25 01:48:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:48:35,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 01:48:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:48:35,495 INFO L225 Difference]: With dead ends: 435 [2020-09-25 01:48:35,495 INFO L226 Difference]: Without dead ends: 312 [2020-09-25 01:48:35,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:48:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-25 01:48:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2020-09-25 01:48:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-25 01:48:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-09-25 01:48:35,548 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 149 [2020-09-25 01:48:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:48:35,549 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-09-25 01:48:35,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:48:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-09-25 01:48:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 01:48:35,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:48:35,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:48:35,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:48:35,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:48:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:48:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash 639518028, now seen corresponding path program 1 times [2020-09-25 01:48:35,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:48:35,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562289859] [2020-09-25 01:48:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:48:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:35,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:40,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 01:48:40,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:48:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 01:48:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-25 01:48:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:48:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:40,978 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:48:40,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:48:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:40,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:48:41,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 01:48:41,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:48:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:41,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:41,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:48:41,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:41,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:41,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:48:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:41,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:48:41,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:48:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:41,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:41,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:41,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:41,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:41,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:41,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:41,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:48:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:48:41,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:41,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:48:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:41,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:41,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 01:48:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:41,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:48:41,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:48:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:41,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:48:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:41,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:41,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:41,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:48:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:41,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:41,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:41,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:41,241 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 01:48:41,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562289859] [2020-09-25 01:48:41,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:48:41,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:48:41,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36608831] [2020-09-25 01:48:41,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:48:41,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:48:41,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:48:41,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:48:41,245 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 6 states. [2020-09-25 01:48:41,801 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:48:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:48:42,966 INFO L93 Difference]: Finished difference Result 482 states and 561 transitions. [2020-09-25 01:48:42,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 01:48:42,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-25 01:48:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:48:42,971 INFO L225 Difference]: With dead ends: 482 [2020-09-25 01:48:42,971 INFO L226 Difference]: Without dead ends: 335 [2020-09-25 01:48:42,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:48:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-25 01:48:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 262. [2020-09-25 01:48:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-25 01:48:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 283 transitions. [2020-09-25 01:48:43,015 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 283 transitions. Word has length 162 [2020-09-25 01:48:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:48:43,015 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 283 transitions. [2020-09-25 01:48:43,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:48:43,016 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 283 transitions. [2020-09-25 01:48:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 01:48:43,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:48:43,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:48:43,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:48:43,019 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:48:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:48:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash 477706998, now seen corresponding path program 1 times [2020-09-25 01:48:43,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:48:43,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529111575] [2020-09-25 01:48:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:48:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:43,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 01:48:48,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 01:48:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 01:48:48,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:48:48,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-25 01:48:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:48:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:48,467 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:48:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:48:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:48:48,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 01:48:48,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:48,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:48:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:48,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:48,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:48:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:48,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:48,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:48:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:48,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:48,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:48:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:48,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:48:48,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:48:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:48,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 01:48:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:48,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 01:48:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 01:48:48,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 01:48:48,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:48:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 01:48:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:48:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:48:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 01:48:48,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:48:48,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:48:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 01:48:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 01:48:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:48:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:48,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:48:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-25 01:48:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:48,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:48,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-25 01:48:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:48,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:48,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:48:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:48:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:48,858 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 01:48:48,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529111575] [2020-09-25 01:48:48,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:48:48,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:48:48,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974784627] [2020-09-25 01:48:48,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:48:48,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:48:48,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:48:48,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:48:48,862 INFO L87 Difference]: Start difference. First operand 262 states and 283 transitions. Second operand 8 states. [2020-09-25 01:48:49,423 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:48:51,196 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:48:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:48:52,453 INFO L93 Difference]: Finished difference Result 678 states and 812 transitions. [2020-09-25 01:48:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 01:48:52,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-09-25 01:48:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:48:52,458 INFO L225 Difference]: With dead ends: 678 [2020-09-25 01:48:52,459 INFO L226 Difference]: Without dead ends: 531 [2020-09-25 01:48:52,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-09-25 01:48:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-09-25 01:48:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 390. [2020-09-25 01:48:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-09-25 01:48:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 422 transitions. [2020-09-25 01:48:52,519 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 422 transitions. Word has length 175 [2020-09-25 01:48:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:48:52,520 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 422 transitions. [2020-09-25 01:48:52,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:48:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 422 transitions. [2020-09-25 01:48:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 01:48:52,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:48:52,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:48:52,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:48:52,524 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:48:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:48:52,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1695038909, now seen corresponding path program 1 times [2020-09-25 01:48:52,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:48:52,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141458189] [2020-09-25 01:48:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:48:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:52,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:54,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:57,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:57,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:57,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 01:48:57,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:48:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 01:48:57,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:48:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-25 01:48:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 01:48:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:57,910 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:48:57,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:48:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:48:58,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 01:48:58,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:58,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:48:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:48:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:48:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:58,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:58,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:48:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:58,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:48:58,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:48:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:58,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:48:58,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:58,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:48:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:58,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:58,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:58,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 01:48:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:48:58,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:58,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:58,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:58,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 01:48:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 01:48:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:48:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 01:48:58,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:48:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:48:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:48:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 01:48:58,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:48:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 01:48:58,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:48:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:48:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:48:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:48:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 01:48:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:48:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:48:58,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:58,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:48:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:48:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:48:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:48:58,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:48:58,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:48:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-25 01:48:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:58,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:48:58,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:48:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:48:58,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-25 01:48:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:48:58,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:48:58,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:48:58,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:48:58,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:48:58,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:48:58,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:48:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:48:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:48:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:48:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:48:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:48:58,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141458189] [2020-09-25 01:48:58,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:48:58,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 01:48:58,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794844568] [2020-09-25 01:48:58,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 01:48:58,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:48:58,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 01:48:58,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:48:58,383 INFO L87 Difference]: Start difference. First operand 390 states and 422 transitions. Second operand 11 states. [2020-09-25 01:48:59,051 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:49:00,866 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:49:01,203 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:49:01,598 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:49:02,714 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:49:03,081 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:49:03,520 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:49:03,856 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:49:04,168 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:49:04,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:49:04,611 INFO L93 Difference]: Finished difference Result 804 states and 946 transitions. [2020-09-25 01:49:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 01:49:04,612 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2020-09-25 01:49:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:49:04,621 INFO L225 Difference]: With dead ends: 804 [2020-09-25 01:49:04,621 INFO L226 Difference]: Without dead ends: 529 [2020-09-25 01:49:04,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 01:49:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-09-25 01:49:04,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 388. [2020-09-25 01:49:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-09-25 01:49:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 418 transitions. [2020-09-25 01:49:04,699 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 418 transitions. Word has length 199 [2020-09-25 01:49:04,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:49:04,700 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 418 transitions. [2020-09-25 01:49:04,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 01:49:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 418 transitions. [2020-09-25 01:49:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 01:49:04,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:49:04,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:49:04,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:49:04,704 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:49:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:49:04,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1169116801, now seen corresponding path program 1 times [2020-09-25 01:49:04,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:49:04,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367908714] [2020-09-25 01:49:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:49:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:49:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:49:05,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking...