/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_spec1_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:43:21,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:43:21,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:43:21,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:43:21,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:43:21,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:43:21,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:43:21,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:43:21,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:43:21,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:43:21,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:43:21,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:43:21,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:43:21,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:43:21,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:43:21,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:43:21,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:43:21,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:43:21,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:43:21,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:43:21,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:43:21,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:43:21,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:43:21,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:43:21,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:43:21,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:43:21,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:43:21,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:43:21,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:43:21,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:43:21,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:43:21,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:43:21,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:43:21,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:43:21,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:43:21,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:43:21,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:43:21,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:43:21,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:43:21,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:43:21,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:43:21,415 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 01:43:21,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:43:21,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:43:21,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:43:21,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:43:21,460 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:43:21,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:43:21,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:43:21,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:43:21,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:43:21,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:43:21,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:43:21,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:43:21,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:43:21,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:43:21,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:43:21,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:43:21,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:43:21,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:43:21,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:43:21,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:43:21,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:43:21,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:43:21,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:43:21,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:43:21,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:43:21,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:43:21,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:43:21,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:43:21,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:43:21,466 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 01:43:21,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:43:21,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:43:21,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:43:21,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:43:21,942 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:43:21,943 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product24.cil.c [2020-09-25 01:43:22,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7340ba42d/6113d7f530a94842bc23ac6318019fb4/FLAGd1b0db929 [2020-09-25 01:43:22,681 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:43:22,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product24.cil.c [2020-09-25 01:43:22,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7340ba42d/6113d7f530a94842bc23ac6318019fb4/FLAGd1b0db929 [2020-09-25 01:43:22,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7340ba42d/6113d7f530a94842bc23ac6318019fb4 [2020-09-25 01:43:22,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:43:22,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:43:22,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:43:22,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:43:22,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:43:22,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:43:22" (1/1) ... [2020-09-25 01:43:22,957 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 01:43:22, skipping insertion in model container [2020-09-25 01:43:22,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:43:22" (1/1) ... [2020-09-25 01:43:22,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:43:23,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:43:23,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:43:23,421 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:43:23,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:43:23,705 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:43:23,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23 WrapperNode [2020-09-25 01:43:23,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:43:23,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:43:23,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:43:23,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:43:23,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (1/1) ... [2020-09-25 01:43:23,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (1/1) ... [2020-09-25 01:43:23,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (1/1) ... [2020-09-25 01:43:23,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (1/1) ... [2020-09-25 01:43:23,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (1/1) ... [2020-09-25 01:43:23,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (1/1) ... [2020-09-25 01:43:23,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (1/1) ... [2020-09-25 01:43:23,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:43:23,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:43:23,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:43:23,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:43:23,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (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 01:43:23,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:43:23,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:43:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:43:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:43:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:43:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:43:23,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:43:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:43:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:43:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:43:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:43:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:43:23,899 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:43:23,900 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:43:23,900 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:43:23,900 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:43:23,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-25 01:43:23,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:43:23,901 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:43:23,901 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:43:23,901 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:43:23,901 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:43:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:43:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:43:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:43:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:43:23,902 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 01:43:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:43:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:43:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:43:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:43:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:43:23,903 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:43:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:43:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:43:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:43:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:43:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:43:23,904 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:43:23,905 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:43:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:43:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:43:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:43:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:43:23,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:43:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:43:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:43:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:43:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:43:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:43:23,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:43:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:43:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:43:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:43:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:43:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:43:23,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:43:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:43:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:43:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:43:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:43:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:43:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:43:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:43:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:43:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:43:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:43:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:43:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:43:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-25 01:43:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:43:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:43:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:43:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:43:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:43:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:43:23,912 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:43:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:43:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:43:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 01:43:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:43:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:43:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:43:23,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:43:23,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:43:25,020 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:43:25,020 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:43:25,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:43:25 BoogieIcfgContainer [2020-09-25 01:43:25,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:43:25,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:43:25,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:43:25,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:43:25,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:43:22" (1/3) ... [2020-09-25 01:43:25,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a38df27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:43:25, skipping insertion in model container [2020-09-25 01:43:25,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:43:23" (2/3) ... [2020-09-25 01:43:25,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a38df27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:43:25, skipping insertion in model container [2020-09-25 01:43:25,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:43:25" (3/3) ... [2020-09-25 01:43:25,036 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product24.cil.c [2020-09-25 01:43:25,047 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:43:25,056 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:43:25,074 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:43:25,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:43:25,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:43:25,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:43:25,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:43:25,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:43:25,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:43:25,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:43:25,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:43:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states. [2020-09-25 01:43:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:43:25,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:43:25,152 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 01:43:25,153 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:43:25,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:43:25,161 INFO L82 PathProgramCache]: Analyzing trace with hash 779831521, now seen corresponding path program 1 times [2020-09-25 01:43:25,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:43:25,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247007290] [2020-09-25 01:43:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:43:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:30,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:30,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:43:30,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:43:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-25 01:43:30,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:30,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:43:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 01:43:31,006 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:43:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:31,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:31,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:43:31,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 01:43:31,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:43:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:31,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:31,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:31,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:43:31,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:43:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:31,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:31,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:31,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:43:31,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:31,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:31,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:31,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:43:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:31,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:31,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:31,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:31,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:43:31,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:31,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:31,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:43:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:31,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:31,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:31,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:43:31,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:31,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:43:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:31,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:31,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:31,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:31,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:43:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:31,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:31,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:43:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:31,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:31,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:31,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:31,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 01:43:31,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:31,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:31,372 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 01:43:31,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247007290] [2020-09-25 01:43:31,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:43:31,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:43:31,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301248878] [2020-09-25 01:43:31,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:43:31,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:43:31,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:43:31,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:43:31,410 INFO L87 Difference]: Start difference. First operand 305 states. Second operand 3 states. [2020-09-25 01:43:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:43:33,149 INFO L93 Difference]: Finished difference Result 478 states and 575 transitions. [2020-09-25 01:43:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:43:33,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:43:33,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:43:33,173 INFO L225 Difference]: With dead ends: 478 [2020-09-25 01:43:33,173 INFO L226 Difference]: Without dead ends: 298 [2020-09-25 01:43:33,180 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 01:43:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-25 01:43:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 254. [2020-09-25 01:43:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-25 01:43:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 278 transitions. [2020-09-25 01:43:33,295 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 278 transitions. Word has length 142 [2020-09-25 01:43:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:43:33,296 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 278 transitions. [2020-09-25 01:43:33,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:43:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 278 transitions. [2020-09-25 01:43:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:43:33,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:43:33,305 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 01:43:33,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:43:33,305 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:43:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:43:33,306 INFO L82 PathProgramCache]: Analyzing trace with hash 912428730, now seen corresponding path program 1 times [2020-09-25 01:43:33,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:43:33,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864151709] [2020-09-25 01:43:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:43:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:33,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:35,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:36,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:38,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:43:38,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:43:38,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-09-25 01:43:38,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:43:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:43:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:43:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:38,737 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:38,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:43:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:38,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:38,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:43:38,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 01:43:38,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:38,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:43:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:38,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:38,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:38,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:38,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:38,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:43:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:38,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:38,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:43:38,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:38,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:38,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:38,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:43:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:38,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:38,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:43:38,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:43:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:38,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:38,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:38,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:43:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:38,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:38,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:38,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:38,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:38,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:43:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:43:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:38,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:38,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:38,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:38,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:43:38,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:38,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:38,960 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 01:43:38,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864151709] [2020-09-25 01:43:38,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:43:38,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:43:38,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087354062] [2020-09-25 01:43:38,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:43:38,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:43:38,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:43:38,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:43:38,966 INFO L87 Difference]: Start difference. First operand 254 states and 278 transitions. Second operand 4 states. [2020-09-25 01:43:39,671 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:43:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:43:40,799 INFO L93 Difference]: Finished difference Result 385 states and 438 transitions. [2020-09-25 01:43:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:43:40,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:43:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:43:40,805 INFO L225 Difference]: With dead ends: 385 [2020-09-25 01:43:40,805 INFO L226 Difference]: Without dead ends: 281 [2020-09-25 01:43:40,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:43:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-25 01:43:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 244. [2020-09-25 01:43:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-09-25 01:43:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 265 transitions. [2020-09-25 01:43:40,869 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 265 transitions. Word has length 143 [2020-09-25 01:43:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:43:40,871 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 265 transitions. [2020-09-25 01:43:40,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:43:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 265 transitions. [2020-09-25 01:43:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 01:43:40,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:43:40,876 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 01:43:40,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:43:40,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:43:40,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:43:40,877 INFO L82 PathProgramCache]: Analyzing trace with hash 713806472, now seen corresponding path program 1 times [2020-09-25 01:43:40,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:43:40,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995633246] [2020-09-25 01:43:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:43:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:40,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:45,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:43:45,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:43:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:43:45,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:43:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:43:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:43:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:46,212 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:43:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:46,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:46,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:43:46,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:46,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 01:43:46,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:46,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:46,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:43:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:46,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:46,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:46,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:43:46,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:46,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:46,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:43:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:46,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:46,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:46,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:46,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:46,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:46,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:46,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:43:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:46,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:46,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:46,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:46,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:43:46,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:46,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:46,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:46,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:46,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:43:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:46,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:46,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:46,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:43:46,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:46,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:46,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:46,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:43:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:46,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:46,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:43:46,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:43:46,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:43:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:43:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:43:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:46,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:46,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:46,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:46,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:46,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:46,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:46,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 01:43:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:46,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:46,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:46,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:46,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:43:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:43:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:46,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 01:43:46,461 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 01:43:46,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995633246] [2020-09-25 01:43:46,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:43:46,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:43:46,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919377118] [2020-09-25 01:43:46,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:43:46,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:43:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:43:46,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:43:46,470 INFO L87 Difference]: Start difference. First operand 244 states and 265 transitions. Second operand 5 states. [2020-09-25 01:43:47,195 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:43:49,123 INFO L93 Difference]: Finished difference Result 582 states and 682 transitions. [2020-09-25 01:43:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:43:49,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 01:43:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:43:49,131 INFO L225 Difference]: With dead ends: 582 [2020-09-25 01:43:49,131 INFO L226 Difference]: Without dead ends: 448 [2020-09-25 01:43:49,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:43:49,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-09-25 01:43:49,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 368. [2020-09-25 01:43:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-09-25 01:43:49,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 411 transitions. [2020-09-25 01:43:49,204 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 411 transitions. Word has length 156 [2020-09-25 01:43:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:43:49,204 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 411 transitions. [2020-09-25 01:43:49,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:43:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 411 transitions. [2020-09-25 01:43:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:43:49,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:43:49,209 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] [2020-09-25 01:43:49,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:43:49,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:43:49,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:43:49,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1380327011, now seen corresponding path program 1 times [2020-09-25 01:43:49,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:43:49,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592627718] [2020-09-25 01:43:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:43:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:54,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:54,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 01:43:54,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:43:54,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 01:43:54,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:43:54,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 01:43:54,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:43:54,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:54,709 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:43:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:43:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:54,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:54,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:54,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:43:54,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 01:43:54,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:54,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:43:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:54,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:54,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:54,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:54,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:54,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:54,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:54,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:43:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:54,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:54,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:54,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:43:54,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:54,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:43:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:54,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:54,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:54,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:54,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:43:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:54,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:54,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:43:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:54,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:54,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:43:54,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:54,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:54,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:55,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 01:43:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:55,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:55,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:43:55,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:43:55,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:43:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:55,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:43:55,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:55,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:43:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:55,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:55,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:55,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:43:55,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:43:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:55,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:43:55,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:43:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:43:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:43:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:43:55,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:43:55,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:43:55,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:43:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:43:55,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:43:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:43:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:43:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:43:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:43:55,126 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 01:43:55,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592627718] [2020-09-25 01:43:55,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:43:55,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:43:55,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139110611] [2020-09-25 01:43:55,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:43:55,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:43:55,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:43:55,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:43:55,130 INFO L87 Difference]: Start difference. First operand 368 states and 411 transitions. Second operand 9 states. [2020-09-25 01:43:55,810 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:56,962 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:57,255 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:43:57,564 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:57,875 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:43:58,184 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:43:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:43:58,409 INFO L93 Difference]: Finished difference Result 577 states and 678 transitions. [2020-09-25 01:43:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:43:58,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-25 01:43:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:43:58,411 INFO L225 Difference]: With dead ends: 577 [2020-09-25 01:43:58,411 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:43:58,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:43:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:43:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:43:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:43:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:43:58,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2020-09-25 01:43:58,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:43:58,422 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:43:58,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:43:58,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:43:58,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:43:58,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:43:58,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:43:58,609 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:58,762 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:58,924 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:59,089 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:59,208 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-25 01:43:59,364 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:43:59,525 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:59,678 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:59,831 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:43:59,978 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:00,104 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-25 01:44:00,518 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:44:00,823 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:44:01,136 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2020-09-25 01:44:01,276 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:44:01,425 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:01,576 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:01,724 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:01,872 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:02,022 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:02,170 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:02,316 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:02,472 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:02,621 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:02,771 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:02,919 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:03,067 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:03,217 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:03,364 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:03,608 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 6 [2020-09-25 01:44:03,758 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:03,908 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:04,053 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:04,202 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:04,542 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:44:04,856 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:44:05,170 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:44:05,404 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-25 01:44:05,620 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 6 [2020-09-25 01:44:05,773 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:05,926 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:06,074 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:06,219 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:06,368 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:06,524 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:06,674 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:06,830 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:06,979 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:07,123 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:07,284 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:07,433 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:07,586 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:07,734 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:07,883 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:08,031 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:08,179 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:08,322 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:08,634 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:44:08,946 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:44:09,259 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-25 01:44:09,493 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-09-25 01:44:09,642 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:09,789 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:44:09,932 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:44:10,366 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-25 01:44:10,580 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:44:10,806 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 20 [2020-09-25 01:44:11,038 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 1 [2020-09-25 01:44:11,460 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 7 [2020-09-25 01:44:11,675 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 8 [2020-09-25 01:44:11,933 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184