/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_spec4_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:53:50,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:53:50,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:53:50,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:53:50,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:53:50,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:53:50,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:53:50,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:53:50,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:53:50,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:53:50,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:53:50,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:53:50,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:53:50,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:53:50,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:53:50,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:53:50,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:53:50,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:53:50,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:53:50,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:53:50,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:53:50,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:53:50,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:53:50,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:53:50,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:53:50,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:53:50,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:53:50,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:53:50,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:53:51,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:53:51,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:53:51,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:53:51,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:53:51,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:53:51,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:53:51,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:53:51,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:53:51,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:53:51,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:53:51,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:53:51,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:53:51,011 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 01:53:51,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:53:51,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:53:51,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:53:51,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:53:51,062 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:53:51,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:53:51,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:53:51,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:53:51,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:53:51,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:53:51,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:53:51,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:53:51,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:53:51,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:53:51,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:53:51,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:53:51,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:53:51,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:53:51,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:53:51,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:53:51,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:53:51,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:53:51,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:53:51,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:53:51,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:53:51,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:53:51,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:53:51,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:53:51,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:53:51,068 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 01:53:51,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:53:51,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:53:51,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:53:51,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:53:51,516 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:53:51,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-09-25 01:53:51,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9baca5259/f7e4aff30fb84a2bbdec761d6c14a8a9/FLAG5f99e229f [2020-09-25 01:53:52,243 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:53:52,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-09-25 01:53:52,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9baca5259/f7e4aff30fb84a2bbdec761d6c14a8a9/FLAG5f99e229f [2020-09-25 01:53:52,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9baca5259/f7e4aff30fb84a2bbdec761d6c14a8a9 [2020-09-25 01:53:52,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:53:52,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:53:52,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:53:52,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:53:52,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:53:52,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:53:52" (1/1) ... [2020-09-25 01:53:52,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:52, skipping insertion in model container [2020-09-25 01:53:52,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:53:52" (1/1) ... [2020-09-25 01:53:52,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:53:52,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:53:52,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:53:52,988 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:53:53,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:53:53,218 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:53:53,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53 WrapperNode [2020-09-25 01:53:53,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:53:53,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:53:53,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:53:53,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:53:53,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (1/1) ... [2020-09-25 01:53:53,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (1/1) ... [2020-09-25 01:53:53,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (1/1) ... [2020-09-25 01:53:53,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (1/1) ... [2020-09-25 01:53:53,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (1/1) ... [2020-09-25 01:53:53,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (1/1) ... [2020-09-25 01:53:53,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (1/1) ... [2020-09-25 01:53:53,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:53:53,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:53:53,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:53:53,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:53:53,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (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 01:53:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:53:53,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:53:53,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:53:53,397 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:53:53,397 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:53:53,397 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:53:53,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:53:53,398 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:53:53,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:53:53,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:53:53,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:53:53,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:53:53,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:53:53,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:53:53,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:53:53,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:53:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:53:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:53:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:53:53,400 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:53:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:53:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:53:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:53:53,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:53:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:53:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:53:53,402 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:53:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:53:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:53:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:53:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:53:53,403 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:53:53,404 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:53:53,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:53:53,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:53:53,404 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:53:53,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:53:53,404 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:53:53,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:53:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:53:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:53:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:53:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:53:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:53:53,405 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:53:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:53:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:53:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:53:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:53:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:53:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:53:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:53:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:53:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:53:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:53:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:53:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:53:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:53:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:53:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:53:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:53:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:53:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:53:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:53:53,410 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:53:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:53:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:53:53,413 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:53:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:53:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:53:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:53:53,414 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:53:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:53:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:53:53,415 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:53:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:53:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:53:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-25 01:53:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:53:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:53:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:53:53,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:53:54,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:53:54,552 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:53:54,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:53:54 BoogieIcfgContainer [2020-09-25 01:53:54,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:53:54,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:53:54,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:53:54,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:53:54,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:53:52" (1/3) ... [2020-09-25 01:53:54,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ec11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:53:54, skipping insertion in model container [2020-09-25 01:53:54,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:53" (2/3) ... [2020-09-25 01:53:54,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ec11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:53:54, skipping insertion in model container [2020-09-25 01:53:54,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:53:54" (3/3) ... [2020-09-25 01:53:54,569 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-09-25 01:53:54,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:53:54,593 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:53:54,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:53:54,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:53:54,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:53:54,655 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:53:54,655 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:53:54,656 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:53:54,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:53:54,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:53:54,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:53:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-09-25 01:53:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:53:54,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:53:54,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:53:54,708 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:53:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:53:54,717 INFO L82 PathProgramCache]: Analyzing trace with hash -66701350, now seen corresponding path program 1 times [2020-09-25 01:53:54,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:53:54,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218307357] [2020-09-25 01:53:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:53:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:55,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:00,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:54:00,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-09-25 01:54:00,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:54:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 01:54:00,628 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:00,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:00,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:00,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 01:54:00,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:00,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:00,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:00,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:00,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:00,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:00,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:00,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:00,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:00,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:00,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:54:00,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:00,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:00,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:00,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:00,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:00,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:00,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:00,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:00,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:54:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:00,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:00,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:00,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:00,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:00,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:00,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:00,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:54:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:00,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:00,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:00,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:00,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218307357] [2020-09-25 01:54:00,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:00,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:54:00,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853210832] [2020-09-25 01:54:00,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:54:00,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:00,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:54:00,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:00,945 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 3 states. [2020-09-25 01:54:02,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:02,404 INFO L93 Difference]: Finished difference Result 474 states and 559 transitions. [2020-09-25 01:54:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:54:02,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:54:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:02,428 INFO L225 Difference]: With dead ends: 474 [2020-09-25 01:54:02,428 INFO L226 Difference]: Without dead ends: 295 [2020-09-25 01:54:02,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-25 01:54:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 253. [2020-09-25 01:54:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-25 01:54:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 272 transitions. [2020-09-25 01:54:02,579 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 272 transitions. Word has length 142 [2020-09-25 01:54:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:02,580 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 272 transitions. [2020-09-25 01:54:02,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:54:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 272 transitions. [2020-09-25 01:54:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:54:02,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:02,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:02,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:54:02,586 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:02,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2010231336, now seen corresponding path program 1 times [2020-09-25 01:54:02,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:02,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368971145] [2020-09-25 01:54:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:05,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:07,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:54:07,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:54:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 01:54:07,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:54:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:54:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:07,973 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:07,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 01:54:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:08,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:08,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:08,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:08,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:08,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 01:54:08,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:08,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:08,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:08,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:08,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:54:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:08,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:08,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:08,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:08,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:08,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:08,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:08,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:08,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368971145] [2020-09-25 01:54:08,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:08,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:54:08,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487710782] [2020-09-25 01:54:08,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:54:08,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:08,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:54:08,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:54:08,252 INFO L87 Difference]: Start difference. First operand 253 states and 272 transitions. Second operand 4 states. [2020-09-25 01:54:08,910 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:09,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:09,948 INFO L93 Difference]: Finished difference Result 387 states and 430 transitions. [2020-09-25 01:54:09,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:54:09,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:54:09,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:09,952 INFO L225 Difference]: With dead ends: 387 [2020-09-25 01:54:09,953 INFO L226 Difference]: Without dead ends: 278 [2020-09-25 01:54:09,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:54:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-09-25 01:54:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 243. [2020-09-25 01:54:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 01:54:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 259 transitions. [2020-09-25 01:54:09,998 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 259 transitions. Word has length 143 [2020-09-25 01:54:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:09,999 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 259 transitions. [2020-09-25 01:54:09,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:54:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 259 transitions. [2020-09-25 01:54:10,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 01:54:10,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:10,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:10,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:54:10,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:10,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:10,003 INFO L82 PathProgramCache]: Analyzing trace with hash 734706202, now seen corresponding path program 1 times [2020-09-25 01:54:10,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:10,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087358231] [2020-09-25 01:54:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:54:15,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 01:54:15,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:54:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:54:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,382 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:15,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:15,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 01:54:15,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:15,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:15,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:54:15,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:15,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:54:15,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:15,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:15,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:54:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:15,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:15,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:54:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:54:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:15,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:15,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:15,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 01:54:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:15,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:54:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:15,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087358231] [2020-09-25 01:54:15,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:15,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:54:15,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479576350] [2020-09-25 01:54:15,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:54:15,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:15,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:54:15,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:54:15,675 INFO L87 Difference]: Start difference. First operand 243 states and 259 transitions. Second operand 5 states. [2020-09-25 01:54:16,219 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:17,070 INFO L93 Difference]: Finished difference Result 433 states and 492 transitions. [2020-09-25 01:54:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:54:17,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 01:54:17,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:17,077 INFO L225 Difference]: With dead ends: 433 [2020-09-25 01:54:17,077 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 01:54:17,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:54:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 01:54:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 243. [2020-09-25 01:54:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-25 01:54:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2020-09-25 01:54:17,149 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 156 [2020-09-25 01:54:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:17,150 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2020-09-25 01:54:17,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:54:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2020-09-25 01:54:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 01:54:17,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:17,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:17,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:54:17,153 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:17,154 INFO L82 PathProgramCache]: Analyzing trace with hash 819157147, now seen corresponding path program 1 times [2020-09-25 01:54:17,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:17,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108650950] [2020-09-25 01:54:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:18,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 01:54:22,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:54:22,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 01:54:22,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:54:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-09-25 01:54:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:22,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:22,569 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:22,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:22,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 01:54:22,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:22,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:22,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:22,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:22,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:22,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:22,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:22,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:22,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:22,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:22,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:22,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:22,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:54:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:22,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 01:54:22,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:54:22,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:54:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 01:54:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 01:54:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:22,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:54:22,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:54:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:54:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 01:54:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:54:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-25 01:54:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:22,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:23,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108650950] [2020-09-25 01:54:23,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:23,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:54:23,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936227699] [2020-09-25 01:54:23,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:54:23,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:23,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:54:23,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:54:23,025 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand 8 states. [2020-09-25 01:54:23,749 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:25,478 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:26,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:26,150 INFO L93 Difference]: Finished difference Result 604 states and 709 transitions. [2020-09-25 01:54:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 01:54:26,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 164 [2020-09-25 01:54:26,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:26,156 INFO L225 Difference]: With dead ends: 604 [2020-09-25 01:54:26,156 INFO L226 Difference]: Without dead ends: 471 [2020-09-25 01:54:26,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-25 01:54:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-25 01:54:26,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 344. [2020-09-25 01:54:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-09-25 01:54:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 369 transitions. [2020-09-25 01:54:26,214 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 369 transitions. Word has length 164 [2020-09-25 01:54:26,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:26,215 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 369 transitions. [2020-09-25 01:54:26,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:54:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 369 transitions. [2020-09-25 01:54:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 01:54:26,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:26,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:26,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:54:26,218 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:26,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1786267109, now seen corresponding path program 1 times [2020-09-25 01:54:26,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:26,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686098429] [2020-09-25 01:54:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:26,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 01:54:31,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:54:31,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 01:54:31,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-09-25 01:54:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 01:54:31,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,592 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:31,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 01:54:31,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:31,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:31,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:54:31,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:54:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:31,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:31,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 01:54:31,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 01:54:31,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:54:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:54:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 01:54:31,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 01:54:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:54:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:54:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:31,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:54:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:31,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:31,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:54:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 42 [2020-09-25 01:54:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-25 01:54:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:31,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-25 01:54:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:31,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:31,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:31,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:31,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:54:31,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:31,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:31,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:31,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:32,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686098429] [2020-09-25 01:54:32,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:32,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:54:32,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248208730] [2020-09-25 01:54:32,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:54:32,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:32,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:54:32,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:54:32,059 INFO L87 Difference]: Start difference. First operand 344 states and 369 transitions. Second operand 10 states. [2020-09-25 01:54:32,572 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:34,151 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:34,529 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:54:34,885 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:35,224 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:54:35,521 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:35,962 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:36,273 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:36,591 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:37,490 INFO L93 Difference]: Finished difference Result 474 states and 553 transitions. [2020-09-25 01:54:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 01:54:37,491 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-09-25 01:54:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:37,496 INFO L225 Difference]: With dead ends: 474 [2020-09-25 01:54:37,496 INFO L226 Difference]: Without dead ends: 471 [2020-09-25 01:54:37,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-25 01:54:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-25 01:54:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 344. [2020-09-25 01:54:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-09-25 01:54:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 368 transitions. [2020-09-25 01:54:37,548 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 368 transitions. Word has length 188 [2020-09-25 01:54:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:37,549 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 368 transitions. [2020-09-25 01:54:37,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:54:37,549 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 368 transitions. [2020-09-25 01:54:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 01:54:37,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:37,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:37,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:54:37,554 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:37,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:37,554 INFO L82 PathProgramCache]: Analyzing trace with hash 342460363, now seen corresponding path program 1 times [2020-09-25 01:54:37,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:37,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699047813] [2020-09-25 01:54:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking...