/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_spec5_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:56:13,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:56:13,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:56:13,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:56:13,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:56:13,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:56:13,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:56:13,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:56:13,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:56:13,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:56:13,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:56:13,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:56:13,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:56:13,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:56:13,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:56:13,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:56:13,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:56:13,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:56:13,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:56:13,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:56:13,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:56:13,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:56:13,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:56:13,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:56:13,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:56:13,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:56:13,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:56:13,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:56:13,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:56:13,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:56:13,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:56:13,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:56:13,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:56:13,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:56:13,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:56:13,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:56:13,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:56:13,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:56:13,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:56:13,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:56:13,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:56:13,351 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 01:56:13,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:56:13,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:56:13,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:56:13,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:56:13,398 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:56:13,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:56:13,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:56:13,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:56:13,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:56:13,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:56:13,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:56:13,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:56:13,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:56:13,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:56:13,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:56:13,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:56:13,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:56:13,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:56:13,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:56:13,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:56:13,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:56:13,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:56:13,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:56:13,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:56:13,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:56:13,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:56:13,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:56:13,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:56:13,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:56:13,404 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 01:56:13,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:56:13,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:56:13,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:56:13,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:56:13,931 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:56:13,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product24.cil.c [2020-09-25 01:56:14,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95fcfbf7/1baef10b75f54cecb6c928fd3980f71f/FLAGb691273ab [2020-09-25 01:56:14,706 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:56:14,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product24.cil.c [2020-09-25 01:56:14,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95fcfbf7/1baef10b75f54cecb6c928fd3980f71f/FLAGb691273ab [2020-09-25 01:56:14,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c95fcfbf7/1baef10b75f54cecb6c928fd3980f71f [2020-09-25 01:56:14,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:56:14,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:56:14,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:56:14,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:56:14,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:56:15,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:56:14" (1/1) ... [2020-09-25 01:56:15,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b2c5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15, skipping insertion in model container [2020-09-25 01:56:15,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:56:14" (1/1) ... [2020-09-25 01:56:15,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:56:15,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:56:15,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:56:15,629 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:56:15,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:56:15,761 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:56:15,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15 WrapperNode [2020-09-25 01:56:15,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:56:15,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:56:15,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:56:15,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:56:15,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (1/1) ... [2020-09-25 01:56:15,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (1/1) ... [2020-09-25 01:56:15,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (1/1) ... [2020-09-25 01:56:15,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (1/1) ... [2020-09-25 01:56:15,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (1/1) ... [2020-09-25 01:56:15,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (1/1) ... [2020-09-25 01:56:15,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (1/1) ... [2020-09-25 01:56:15,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:56:15,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:56:15,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:56:15,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:56:15,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (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 01:56:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:56:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:56:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:56:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:56:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:56:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:56:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:56:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:56:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:56:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:56:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:56:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:56:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:56:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:56:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:56:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:56:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:56:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:56:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:56:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:56:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:56:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 01:56:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:56:15,943 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:56:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:56:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:56:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:56:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:56:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:56:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:56:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:56:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:56:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:56:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:56:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:56:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:56:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:56:15,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:56:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-25 01:56:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-25 01:56:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-25 01:56:15,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:56:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:56:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:56:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:56:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:56:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:56:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:56:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:56:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:56:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:56:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:56:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-25 01:56:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:56:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:56:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:56:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:56:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:56:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:56:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:56:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:56:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:56:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:56:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:56:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:56:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:56:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:56:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:56:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:56:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:56:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:56:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-25 01:56:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-25 01:56:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:56:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:56:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:56:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 01:56:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:56:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:56:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:56:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:56:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:56:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:56:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:56:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:56:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:56:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:56:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:56:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:56:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:56:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:56:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:56:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:56:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:56:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:56:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:56:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:56:15,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:56:17,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:56:17,120 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:56:17,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:56:17 BoogieIcfgContainer [2020-09-25 01:56:17,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:56:17,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:56:17,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:56:17,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:56:17,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:56:14" (1/3) ... [2020-09-25 01:56:17,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b661ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:56:17, skipping insertion in model container [2020-09-25 01:56:17,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:15" (2/3) ... [2020-09-25 01:56:17,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b661ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:56:17, skipping insertion in model container [2020-09-25 01:56:17,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:56:17" (3/3) ... [2020-09-25 01:56:17,136 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product24.cil.c [2020-09-25 01:56:17,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:56:17,159 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:56:17,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:56:17,218 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:56:17,218 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:56:17,218 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:56:17,219 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:56:17,219 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:56:17,219 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:56:17,219 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:56:17,219 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:56:17,248 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states. [2020-09-25 01:56:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 01:56:17,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:56:17,269 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] [2020-09-25 01:56:17,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:56:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:56:17,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2060642327, now seen corresponding path program 1 times [2020-09-25 01:56:17,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:56:17,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979729278] [2020-09-25 01:56:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:56:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:17,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:18,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:19,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:22,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:22,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:22,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 01:56:22,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:56:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 01:56:22,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-25 01:56:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 01:56:23,125 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:23,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:56:23,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 01:56:23,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:56:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:23,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:56:23,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:56:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:56:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:23,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:56:23,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:56:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:23,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:23,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:56:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:23,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:23,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:56:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:56:23,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:23,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:56:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:23,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:23,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 01:56:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:23,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:23,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 01:56:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:23,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:23,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:23,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:23,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:56:23,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979729278] [2020-09-25 01:56:23,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:56:23,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:56:23,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193108946] [2020-09-25 01:56:23,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:56:23,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:56:23,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:56:23,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:56:23,545 INFO L87 Difference]: Start difference. First operand 323 states. Second operand 4 states. [2020-09-25 01:56:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:56:25,272 INFO L93 Difference]: Finished difference Result 508 states and 600 transitions. [2020-09-25 01:56:25,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:56:25,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 01:56:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:56:25,311 INFO L225 Difference]: With dead ends: 508 [2020-09-25 01:56:25,311 INFO L226 Difference]: Without dead ends: 321 [2020-09-25 01:56:25,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 01:56:25,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-09-25 01:56:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 272. [2020-09-25 01:56:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 01:56:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-09-25 01:56:25,440 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 160 [2020-09-25 01:56:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:56:25,441 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-09-25 01:56:25,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:56:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-09-25 01:56:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:56:25,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:56:25,447 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] [2020-09-25 01:56:25,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:56:25,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:56:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:56:25,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1530483194, now seen corresponding path program 1 times [2020-09-25 01:56:25,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:56:25,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626207042] [2020-09-25 01:56:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:56:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:27,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:30,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:30,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 01:56:30,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:56:30,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 01:56:30,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 01:56:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:56:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:30,835 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:30,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:56:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 01:56:30,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:56:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:31,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:56:31,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:56:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:31,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:31,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:56:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:31,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:31,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:31,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:56:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:31,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:56:31,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:31,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:56:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:31,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:31,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:56:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:56:31,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:56:31,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:56:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:31,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:31,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 01:56:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:31,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:31,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 01:56:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:31,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:31,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:31,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:31,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:31,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:56:31,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626207042] [2020-09-25 01:56:31,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:56:31,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:56:31,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864709678] [2020-09-25 01:56:31,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:56:31,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:56:31,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:56:31,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:56:31,144 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 5 states. [2020-09-25 01:56:31,875 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:56:33,021 INFO L93 Difference]: Finished difference Result 427 states and 484 transitions. [2020-09-25 01:56:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:56:33,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 01:56:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:56:33,026 INFO L225 Difference]: With dead ends: 427 [2020-09-25 01:56:33,026 INFO L226 Difference]: Without dead ends: 310 [2020-09-25 01:56:33,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 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 01:56:33,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-25 01:56:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 262. [2020-09-25 01:56:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-25 01:56:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-09-25 01:56:33,080 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 161 [2020-09-25 01:56:33,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:56:33,081 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-09-25 01:56:33,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:56:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-09-25 01:56:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 01:56:33,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:56:33,084 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] [2020-09-25 01:56:33,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:56:33,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:56:33,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:56:33,085 INFO L82 PathProgramCache]: Analyzing trace with hash -667887568, now seen corresponding path program 1 times [2020-09-25 01:56:33,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:56:33,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186735022] [2020-09-25 01:56:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:56:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 01:56:38,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:56:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:56:38,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-25 01:56:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 01:56:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:38,483 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:38,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:56:38,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 01:56:38,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:56:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:56:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:56:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:38,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:38,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:38,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:56:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:38,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:38,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:56:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:38,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:38,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:56:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:38,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:38,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 01:56:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:38,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:38,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:56:38,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:38,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:56:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:56:38,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:56:38,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 01:56:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:38,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 01:56:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:56:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 01:56:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:38,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:38,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:38,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-09-25 01:56:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:38,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:38,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:38,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:38,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:38,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:56:38,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186735022] [2020-09-25 01:56:38,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:56:38,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:56:38,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828909797] [2020-09-25 01:56:38,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:56:38,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:56:38,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:56:38,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:56:38,829 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 6 states. [2020-09-25 01:56:39,367 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:56:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:56:41,506 INFO L93 Difference]: Finished difference Result 634 states and 738 transitions. [2020-09-25 01:56:41,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:56:41,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-09-25 01:56:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:56:41,513 INFO L225 Difference]: With dead ends: 634 [2020-09-25 01:56:41,513 INFO L226 Difference]: Without dead ends: 487 [2020-09-25 01:56:41,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:56:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2020-09-25 01:56:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 399. [2020-09-25 01:56:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-09-25 01:56:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 444 transitions. [2020-09-25 01:56:41,587 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 444 transitions. Word has length 174 [2020-09-25 01:56:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:56:41,588 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 444 transitions. [2020-09-25 01:56:41,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:56:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 444 transitions. [2020-09-25 01:56:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 01:56:41,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:56:41,592 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] [2020-09-25 01:56:41,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:56:41,592 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:56:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:56:41,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1365302591, now seen corresponding path program 1 times [2020-09-25 01:56:41,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:56:41,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949433905] [2020-09-25 01:56:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:56:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:44,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:46,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:46,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 01:56:46,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:56:46,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:56:46,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:56:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-25 01:56:46,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:56:46,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:47,106 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:47,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:56:47,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 01:56:47,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:56:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:47,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:56:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:47,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:56:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:47,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:56:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:47,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:47,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:56:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:47,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:47,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 01:56:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:56:47,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:47,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:56:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:56:47,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:47,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:47,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-25 01:56:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:47,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:56:47,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:56:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-25 01:56:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:47,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:47,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:47,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:56:47,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:56:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:56:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 01:56:47,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949433905] [2020-09-25 01:56:47,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:56:47,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:56:47,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656993255] [2020-09-25 01:56:47,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:56:47,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:56:47,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:56:47,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:56:47,574 INFO L87 Difference]: Start difference. First operand 399 states and 444 transitions. Second operand 10 states. [2020-09-25 01:56:48,378 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:49,389 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:49,747 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:56:50,791 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:56:51,147 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-25 01:56:51,479 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:56:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:56:51,556 INFO L93 Difference]: Finished difference Result 640 states and 760 transitions. [2020-09-25 01:56:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 01:56:51,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 01:56:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:56:51,559 INFO L225 Difference]: With dead ends: 640 [2020-09-25 01:56:51,560 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:56:51,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-09-25 01:56:51,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:56:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:56:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:56:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:56:51,563 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2020-09-25 01:56:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:56:51,564 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:56:51,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:56:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:56:51,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:56:51,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:56:51,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:56:51,776 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:51,942 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:52,114 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:52,294 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:52,458 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:52,641 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:52,799 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:52,960 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:53,122 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:53,281 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:53,419 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 7 [2020-09-25 01:56:53,603 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:53,762 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:53,923 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:54,105 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:54,469 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:56:54,801 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:56:55,132 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:56:55,465 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:56:55,614 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:55,770 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:55,930 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:56,090 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:56,252 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:56,415 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:56,572 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:56,730 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:56,883 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:57,036 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:57,196 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:57,360 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:57,520 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:57,674 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:57,832 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:57,991 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:58,144 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:58,303 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:58,456 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:58,613 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:58,771 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:58,928 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:59,082 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:59,239 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:59,399 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:59,553 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:59,710 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:56:59,869 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:00,027 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:00,280 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:00,439 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:00,607 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:00,761 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:00,924 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:01,029 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 7 [2020-09-25 01:57:01,198 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:01,364 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:01,468 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 7 [2020-09-25 01:57:01,625 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:01,805 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:02,074 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:02,231 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:02,398 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:02,556 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:02,714 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:02,873 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:03,026 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:03,132 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 7 [2020-09-25 01:57:03,546 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 9 [2020-09-25 01:57:03,748 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-09-25 01:57:03,946 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 1