/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:54:55,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:54:55,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:54:55,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:54:55,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:54:55,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:54:55,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:54:55,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:54:55,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:54:55,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:54:55,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:54:55,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:54:55,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:54:55,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:54:55,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:54:55,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:54:55,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:54:55,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:54:55,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:54:55,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:54:55,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:54:55,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:54:55,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:54:55,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:54:55,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:54:55,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:54:55,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:54:55,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:54:55,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:54:55,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:54:55,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:54:55,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:54:55,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:54:55,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:54:55,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:54:55,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:54:55,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:54:55,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:54:55,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:54:55,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:54:55,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:54:55,729 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 [2020-09-24 16:54:55,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:54:55,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:54:55,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:54:55,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:54:55,758 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:54:55,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:54:55,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:54:55,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:54:55,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:54:55,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:54:55,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:54:55,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:54:55,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:54:55,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:54:55,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:54:55,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:54:55,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:54:55,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:54:55,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:54:55,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:54:55,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:54:55,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:54:55,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:54:55,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:54:55,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:54:55,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:54:55,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:54:55,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:54:55,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:54:55,763 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;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;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;log-additional-information=true; [2020-09-24 16:54:56,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:54:56,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:54:56,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:54:56,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:54:56,250 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:54:56,252 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-24 16:54:56,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6837e89ce/79fe47de6c4446d7b624ff32811cdbf2/FLAG33ad65c97 [2020-09-24 16:54:56,849 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:54:56,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-24 16:54:56,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6837e89ce/79fe47de6c4446d7b624ff32811cdbf2/FLAG33ad65c97 [2020-09-24 16:54:57,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6837e89ce/79fe47de6c4446d7b624ff32811cdbf2 [2020-09-24 16:54:57,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:54:57,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:54:57,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:57,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:54:57,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:54:57,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:57,178 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 24.09 04:54:57, skipping insertion in model container [2020-09-24 16:54:57,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:57,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:54:57,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:54:57,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:57,699 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:54:57,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:54:57,930 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:54:57,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57 WrapperNode [2020-09-24 16:54:57,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:54:57,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:54:57,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:54:57,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:54:57,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:57,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:57,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:57,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:58,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:58,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:58,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (1/1) ... [2020-09-24 16:54:58,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:54:58,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:54:58,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:54:58,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:54:58,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (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 [2020-09-24 16:54:58,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:54:58,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:54:58,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:58,100 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:54:58,100 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:54:58,100 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:54:58,100 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:54:58,100 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:54:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:54:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:54:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:54:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:54:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:54:58,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:54:58,102 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 16:54:58,102 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:54:58,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:54:58,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:54:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:54:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:54:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:54:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:54:58,103 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:54:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:54:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:54:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:54:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:54:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:54:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:54:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:54:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:54:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:54:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:54:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:54:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:54:58,106 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:54:58,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:54:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:54:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:54:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:54:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:54:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:54:58,107 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 16:54:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:54:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:54:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:54:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:54:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:54:58,108 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:54:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:54:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:54:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:54:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:54:58,109 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:54:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 16:54:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:54:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:54:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:54:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:54:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:54:58,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:54:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:54:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:54:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:54:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:54:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:54:58,111 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:54:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:54:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:54:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:54:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:54:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:54:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:54:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:54:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:54:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:54:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:54:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:54:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:54:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:54:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:54:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:54:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:54:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:54:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:54:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:54:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:54:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:54:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:54:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:54:59,323 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:54:59,324 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:54:59,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:59 BoogieIcfgContainer [2020-09-24 16:54:59,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:54:59,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:54:59,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:54:59,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:54:59,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:54:57" (1/3) ... [2020-09-24 16:54:59,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dcfd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:59, skipping insertion in model container [2020-09-24 16:54:59,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:54:57" (2/3) ... [2020-09-24 16:54:59,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dcfd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:54:59, skipping insertion in model container [2020-09-24 16:54:59,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:54:59" (3/3) ... [2020-09-24 16:54:59,340 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-09-24 16:54:59,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:54:59,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:54:59,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:54:59,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:54:59,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:54:59,420 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:54:59,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:54:59,420 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:54:59,420 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:54:59,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:54:59,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:54:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-09-24 16:54:59,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:54:59,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:54:59,471 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] [2020-09-24 16:54:59,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:54:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:54:59,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1162021346, now seen corresponding path program 1 times [2020-09-24 16:54:59,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:54:59,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509189627] [2020-09-24 16:54:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:54:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:05,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:21,384 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:21,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:55:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:55:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21538 [2020-09-24 16:55:21,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:55:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 16:55:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 16:55:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:21,792 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:55:21,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:55:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:22,071 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:22,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:55:22,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 16:55:22,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 16:55:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:55:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:55:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:22,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:22,141 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:22,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:22,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:22,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:55:22,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:22,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:22,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:55:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:22,149 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:22,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:22,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:55:22,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:55:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:22,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:55:22,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:55:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:55:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:22,170 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:22,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:55:22,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:22,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:55:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:55:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 16:55:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:55:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:22,176 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:22,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:22,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:22,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:55:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:55:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:22,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:22,183 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:55:22,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:55:22,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:55:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:55:22,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:55:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:55:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 16:55:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:55:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:55:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:55:22,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509189627] [2020-09-24 16:55:22,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:55:22,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:55:22,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575075335] [2020-09-24 16:55:22,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:55:22,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:55:22,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:55:22,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:55:22,243 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 4 states. [2020-09-24 16:55:22,843 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:55:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:55:25,256 INFO L93 Difference]: Finished difference Result 687 states and 831 transitions. [2020-09-24 16:55:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:55:25,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-24 16:55:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:55:25,283 INFO L225 Difference]: With dead ends: 687 [2020-09-24 16:55:25,283 INFO L226 Difference]: Without dead ends: 482 [2020-09-24 16:55:25,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:55:25,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-24 16:55:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 410. [2020-09-24 16:55:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-09-24 16:55:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 457 transitions. [2020-09-24 16:55:25,445 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 457 transitions. Word has length 142 [2020-09-24 16:55:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:55:25,446 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 457 transitions. [2020-09-24 16:55:25,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:55:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 457 transitions. [2020-09-24 16:55:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 16:55:25,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:55:25,452 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] [2020-09-24 16:55:25,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:55:25,452 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:55:25,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:55:25,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1650463023, now seen corresponding path program 1 times [2020-09-24 16:55:25,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:55:25,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684744750] [2020-09-24 16:55:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:55:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:55:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:30,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:55:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking...