/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_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:44:47,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:44:47,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:44:47,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:44:47,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:44:47,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:44:47,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:44:47,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:44:47,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:44:47,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:44:47,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:44:47,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:44:47,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:44:47,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:44:47,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:44:47,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:44:47,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:44:47,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:44:47,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:44:47,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:44:47,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:44:47,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:44:47,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:44:47,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:44:47,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:44:47,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:44:47,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:44:47,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:44:47,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:44:47,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:44:47,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:44:47,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:44:47,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:44:47,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:44:47,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:44:47,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:44:47,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:44:47,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:44:47,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:44:47,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:44:47,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:44:47,725 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 16:44:47,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:44:47,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:44:47,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:44:47,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:44:47,753 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:44:47,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:44:47,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:44:47,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:44:47,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:44:47,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:44:47,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:44:47,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:44:47,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:44:47,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:44:47,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:44:47,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:44:47,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:44:47,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:44:47,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:44:47,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:44:47,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:44:47,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:44:47,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:44:47,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:44:47,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:44:47,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:44:47,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:44:47,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:44:47,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:44:47,758 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 16:44:48,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:44:48,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:44:48,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:44:48,248 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:44:48,249 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:44:48,250 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-09-24 16:44:48,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/151c82b84/49d60aaabd9d49ab89716fab7a76c4ad/FLAG0727fc57d [2020-09-24 16:44:48,965 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:44:48,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-09-24 16:44:48,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/151c82b84/49d60aaabd9d49ab89716fab7a76c4ad/FLAG0727fc57d [2020-09-24 16:44:49,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/151c82b84/49d60aaabd9d49ab89716fab7a76c4ad [2020-09-24 16:44:49,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:44:49,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:44:49,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:44:49,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:44:49,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:44:49,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:49,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49, skipping insertion in model container [2020-09-24 16:44:49,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:49,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:44:49,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:44:49,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:44:49,837 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:44:49,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:44:49,963 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:44:49,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49 WrapperNode [2020-09-24 16:44:49,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:44:49,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:44:49,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:44:49,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:44:49,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:49,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:50,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:50,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:50,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:50,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:50,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (1/1) ... [2020-09-24 16:44:50,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:44:50,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:44:50,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:44:50,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:44:50,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (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 16:44:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:44:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:44:50,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 16:44:50,234 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 16:44:50,234 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 16:44:50,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 16:44:50,235 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 16:44:50,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:44:50,235 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 16:44:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 16:44:50,237 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 16:44:50,237 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 16:44:50,237 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:44:50,237 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 16:44:50,238 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 16:44:50,239 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 16:44:50,239 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 16:44:50,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 16:44:50,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 16:44:50,239 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 16:44:50,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 16:44:50,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 16:44:50,240 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 16:44:50,240 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 16:44:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 16:44:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 16:44:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 16:44:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 16:44:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 16:44:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 16:44:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 16:44:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 16:44:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 16:44:50,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 16:44:50,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 16:44:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:44:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:44:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 16:44:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 16:44:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 16:44:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 16:44:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 16:44:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 16:44:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 16:44:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 16:44:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 16:44:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 16:44:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 16:44:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 16:44:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 16:44:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:44:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 16:44:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 16:44:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 16:44:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 16:44:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 16:44:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 16:44:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 16:44:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 16:44:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 16:44:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 16:44:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 16:44:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 16:44:50,249 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 16:44:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 16:44:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 16:44:50,250 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 16:44:50,251 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 16:44:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 16:44:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:44:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 16:44:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 16:44:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:44:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:44:50,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 16:44:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:44:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:44:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:44:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:44:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 16:44:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:44:50,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 16:44:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 16:44:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:44:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 16:44:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 16:44:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 16:44:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 16:44:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:44:50,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 16:44:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:44:51,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:44:51,421 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 16:44:51,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:44:51 BoogieIcfgContainer [2020-09-24 16:44:51,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:44:51,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:44:51,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:44:51,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:44:51,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:44:49" (1/3) ... [2020-09-24 16:44:51,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8539b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:44:51, skipping insertion in model container [2020-09-24 16:44:51,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:44:49" (2/3) ... [2020-09-24 16:44:51,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8539b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:44:51, skipping insertion in model container [2020-09-24 16:44:51,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:44:51" (3/3) ... [2020-09-24 16:44:51,439 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-09-24 16:44:51,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:44:51,462 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:44:51,486 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:44:51,521 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:44:51,521 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:44:51,521 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:44:51,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:44:51,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:44:51,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:44:51,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:44:51,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:44:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-09-24 16:44:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:44:51,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:44:51,571 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 16:44:51,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:44:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:44:51,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1442746419, now seen corresponding path program 1 times [2020-09-24 16:44:51,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:44:51,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707856121] [2020-09-24 16:44:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:44:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:44:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:44:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:07,907 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:45:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 16:45:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 16:45:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15949 [2020-09-24 16:45:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:45:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:45:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-24 16:45:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 16:45:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:45:08,322 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 16:45:08,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:45:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:45:08,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:08,438 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:45:08,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 16:45:08,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:45:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 16:45:08,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:45:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:45:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:45:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:45:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:45:08,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 16:45:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:45:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:45:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:45:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:45:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:45:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:45:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:45:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:45:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:45:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:45:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:45:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:45:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:08,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:45:08,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:45:08,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:45:08,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:45:08,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:45:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:45:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:45:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:45:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:45:08,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 16:45:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:45:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:08,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:45:08,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:45:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:45:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:45:08,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:45:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:45:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:45:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:45:08,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:45:08,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 16:45:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:45:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:08,522 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:45:08,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:45:08,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:45:08,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:45:08,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:45:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:45:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:45:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:45:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:45:08,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 16:45:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:45:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:45:08,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:45:08,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:45:08,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:45:08,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:45:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:45:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:45:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:45:08,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:45:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 16:45:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:45:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:08,548 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:45:08,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:45:08,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:45:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:45:08,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 16:45:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:45:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:45:08,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:45:08,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:45:08,613 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 16:45:08,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707856121] [2020-09-24 16:45:08,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:45:08,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:45:08,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271993877] [2020-09-24 16:45:08,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:45:08,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:45:08,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:45:08,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:45:08,657 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 8 states. [2020-09-24 16:45:09,502 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 16:45:10,676 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 16:45:11,045 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 16:45:11,353 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:45:11,689 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:45:11,995 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 16:45:12,821 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:45:13,124 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 16:45:13,473 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 16:45:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:45:14,974 INFO L93 Difference]: Finished difference Result 661 states and 822 transitions. [2020-09-24 16:45:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:45:14,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 16:45:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:45:15,000 INFO L225 Difference]: With dead ends: 661 [2020-09-24 16:45:15,000 INFO L226 Difference]: Without dead ends: 436 [2020-09-24 16:45:15,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 16:45:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-09-24 16:45:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 393. [2020-09-24 16:45:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-09-24 16:45:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 451 transitions. [2020-09-24 16:45:15,175 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 451 transitions. Word has length 142 [2020-09-24 16:45:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:45:15,176 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 451 transitions. [2020-09-24 16:45:15,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:45:15,177 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 451 transitions. [2020-09-24 16:45:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-24 16:45:15,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:45:15,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:45:15,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:45:15,203 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:45:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:45:15,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1886653360, now seen corresponding path program 1 times [2020-09-24 16:45:15,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:45:15,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882453116] [2020-09-24 16:45:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:45:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:45:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:16,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 16:45:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking...