/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --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_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:10:17,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:10:17,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:10:17,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:10:17,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:10:17,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:10:17,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:10:17,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:10:17,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:10:17,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:10:17,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:10:17,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:10:17,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:10:17,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:10:17,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:10:17,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:10:17,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:10:17,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:10:17,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:10:17,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:10:17,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:10:17,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:10:17,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:10:17,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:10:17,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:10:17,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:10:17,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:10:17,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:10:17,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:10:17,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:10:17,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:10:17,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:10:17,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:10:17,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:10:17,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:10:17,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:10:17,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:10:17,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:10:17,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:10:17,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:10:17,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:10:17,801 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 [2020-08-21 17:10:17,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:10:17,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:10:17,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:10:17,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:10:17,843 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:10:17,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:10:17,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:10:17,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:10:17,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:10:17,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:10:17,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:10:17,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:10:17,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:10:17,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:10:17,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:10:17,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:10:17,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:10:17,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:10:17,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:10:17,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:10:17,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:10:17,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:10:17,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:10:17,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:10:17,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:10:17,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:10:17,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:10:17,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:10:17,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:10:17,850 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:10:18,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:10:18,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:10:18,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:10:18,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:10:18,151 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:10:18,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-08-21 17:10:18,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89035695/df5e66d5fbcd4375afa2955a89f9730c/FLAG04802dfaa [2020-08-21 17:10:18,746 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:10:18,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-08-21 17:10:18,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89035695/df5e66d5fbcd4375afa2955a89f9730c/FLAG04802dfaa [2020-08-21 17:10:19,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89035695/df5e66d5fbcd4375afa2955a89f9730c [2020-08-21 17:10:19,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:10:19,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:10:19,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:10:19,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:10:19,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:10:19,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257a0311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19, skipping insertion in model container [2020-08-21 17:10:19,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:10:19,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:10:19,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:10:19,647 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:10:19,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:10:19,831 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:10:19,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19 WrapperNode [2020-08-21 17:10:19,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:10:19,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:10:19,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:10:19,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:10:19,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (1/1) ... [2020-08-21 17:10:19,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:10:19,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:10:19,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:10:19,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:10:19,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (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 [2020-08-21 17:10:19,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:10:20,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:10:20,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:10:20,001 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:10:20,001 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:10:20,001 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:10:20,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:10:20,001 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:10:20,001 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:10:20,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 17:10:20,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:10:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:10:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:10:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:10:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:10:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:10:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:10:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:10:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:10:20,005 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:10:20,005 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:10:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:10:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 17:10:20,006 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:10:20,008 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:10:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:10:20,009 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:10:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:10:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:10:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 17:10:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:10:20,010 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:10:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:10:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:10:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:10:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:10:20,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:10:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:10:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:10:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:10:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:10:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:10:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:10:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:10:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:10:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:10:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:10:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:10:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 17:10:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:10:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:10:20,014 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:10:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:10:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:10:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:10:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:10:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:10:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:10:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:10:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:10:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:10:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:10:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:10:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:10:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:10:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:10:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:10:20,018 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:10:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:10:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:10:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 17:10:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 17:10:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:10:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:10:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:10:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:10:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:10:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:10:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:10:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:10:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:10:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:10:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:10:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:10:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:10:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:10:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:10:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:10:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:10:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:10:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:10:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:10:21,078 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:10:21,078 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:10:21,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:21 BoogieIcfgContainer [2020-08-21 17:10:21,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:10:21,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:10:21,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:10:21,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:10:21,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:10:19" (1/3) ... [2020-08-21 17:10:21,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1142982c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:21, skipping insertion in model container [2020-08-21 17:10:21,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:19" (2/3) ... [2020-08-21 17:10:21,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1142982c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:21, skipping insertion in model container [2020-08-21 17:10:21,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:21" (3/3) ... [2020-08-21 17:10:21,097 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2020-08-21 17:10:21,109 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:10:21,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:10:21,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:10:21,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:10:21,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:10:21,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:10:21,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:10:21,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:10:21,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:10:21,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:10:21,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:10:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-21 17:10:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:10:21,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:21,204 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] [2020-08-21 17:10:21,205 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:21,210 INFO L82 PathProgramCache]: Analyzing trace with hash 578570237, now seen corresponding path program 1 times [2020-08-21 17:10:21,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:21,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259617476] [2020-08-21 17:10:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:21,913 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:21,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:21,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:21,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:10:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:10:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:21,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:10:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:10:22,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259617476] [2020-08-21 17:10:22,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:22,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:10:22,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160750210] [2020-08-21 17:10:22,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:10:22,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:10:22,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:10:22,046 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-21 17:10:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:23,242 INFO L93 Difference]: Finished difference Result 300 states and 394 transitions. [2020-08-21 17:10:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:10:23,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 17:10:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:23,260 INFO L225 Difference]: With dead ends: 300 [2020-08-21 17:10:23,260 INFO L226 Difference]: Without dead ends: 162 [2020-08-21 17:10:23,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:10:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-21 17:10:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2020-08-21 17:10:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 17:10:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2020-08-21 17:10:23,398 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2020-08-21 17:10:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:23,399 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2020-08-21 17:10:23,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:10:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2020-08-21 17:10:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 17:10:23,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:23,413 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] [2020-08-21 17:10:23,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:10:23,413 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1188326363, now seen corresponding path program 1 times [2020-08-21 17:10:23,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:23,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761750097] [2020-08-21 17:10:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,810 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:10:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:10:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:10:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:10:23,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761750097] [2020-08-21 17:10:23,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:23,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:10:23,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119101515] [2020-08-21 17:10:23,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:10:23,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:23,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:10:23,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:10:23,857 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2020-08-21 17:10:24,268 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:10:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:25,162 INFO L93 Difference]: Finished difference Result 229 states and 281 transitions. [2020-08-21 17:10:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:10:25,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 17:10:25,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:25,167 INFO L225 Difference]: With dead ends: 229 [2020-08-21 17:10:25,167 INFO L226 Difference]: Without dead ends: 146 [2020-08-21 17:10:25,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:10:25,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-21 17:10:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-21 17:10:25,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-21 17:10:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-21 17:10:25,206 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2020-08-21 17:10:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:25,207 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-21 17:10:25,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:10:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-21 17:10:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 17:10:25,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:25,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:10:25,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:10:25,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:25,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1564710697, now seen corresponding path program 1 times [2020-08-21 17:10:25,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:25,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825438639] [2020-08-21 17:10:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,560 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:25,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:10:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:10:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:10:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:10:25,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825438639] [2020-08-21 17:10:25,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:25,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:10:25,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030941624] [2020-08-21 17:10:25,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:10:25,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:10:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:10:25,641 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2020-08-21 17:10:25,991 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:26,279 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:26,548 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:26,782 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:28,012 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-08-21 17:10:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:10:28,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 17:10:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:28,023 INFO L225 Difference]: With dead ends: 242 [2020-08-21 17:10:28,023 INFO L226 Difference]: Without dead ends: 146 [2020-08-21 17:10:28,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:10:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-21 17:10:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-21 17:10:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-21 17:10:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-21 17:10:28,065 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 58 [2020-08-21 17:10:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:28,065 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-21 17:10:28,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:10:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-21 17:10:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 17:10:28,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:28,066 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] [2020-08-21 17:10:28,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:10:28,070 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash -203175812, now seen corresponding path program 1 times [2020-08-21 17:10:28,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:28,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138309617] [2020-08-21 17:10:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,454 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:10:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:10:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:10:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:10:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 17:10:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 17:10:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:10:28,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138309617] [2020-08-21 17:10:28,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:28,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:10:28,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957967641] [2020-08-21 17:10:28,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:10:28,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:28,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:10:28,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:10:28,583 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 8 states. [2020-08-21 17:10:28,955 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:30,616 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:30,924 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:31,164 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:31,526 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:31,952 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2020-08-21 17:10:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:10:31,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-08-21 17:10:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:31,962 INFO L225 Difference]: With dead ends: 363 [2020-08-21 17:10:31,963 INFO L226 Difference]: Without dead ends: 267 [2020-08-21 17:10:31,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:10:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-08-21 17:10:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2020-08-21 17:10:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-21 17:10:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-21 17:10:32,022 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 71 [2020-08-21 17:10:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:32,023 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-21 17:10:32,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:10:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-21 17:10:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-21 17:10:32,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:32,025 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] [2020-08-21 17:10:32,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:10:32,025 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1511330786, now seen corresponding path program 1 times [2020-08-21 17:10:32,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:32,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788261877] [2020-08-21 17:10:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:10:32,084 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:10:32,084 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:10:32,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:10:32,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:10:32 BoogieIcfgContainer [2020-08-21 17:10:32,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:10:32,114 INFO L168 Benchmark]: Toolchain (without parser) took 13060.82 ms. Allocated memory was 140.0 MB in the beginning and 447.2 MB in the end (delta: 307.2 MB). Free memory was 102.4 MB in the beginning and 349.8 MB in the end (delta: -247.4 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:32,115 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:10:32,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.92 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 167.9 MB in the end (delta: -65.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:32,117 INFO L168 Benchmark]: Boogie Preprocessor took 89.28 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 163.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:32,118 INFO L168 Benchmark]: RCFGBuilder took 1164.49 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 163.9 MB in the beginning and 194.3 MB in the end (delta: -30.4 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:32,119 INFO L168 Benchmark]: TraceAbstraction took 11023.06 ms. Allocated memory was 236.5 MB in the beginning and 447.2 MB in the end (delta: 210.8 MB). Free memory was 194.3 MB in the beginning and 349.8 MB in the end (delta: -155.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:32,122 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 778.92 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.2 MB in the beginning and 167.9 MB in the end (delta: -65.7 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.28 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 163.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1164.49 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 163.9 MB in the beginning and 194.3 MB in the end (delta: -30.4 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11023.06 ms. Allocated memory was 236.5 MB in the beginning and 447.2 MB in the end (delta: 210.8 MB). Free memory was 194.3 MB in the beginning and 349.8 MB in the end (delta: -155.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L145] int cleanupTimeShifts = 4; [L286] int pumpRunning = 0; [L287] int systemActive = 1; [L709] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L224] int retValue_acc ; [L225] int tmp ; [L229] FCALL select_helpers() [L230] FCALL select_features() [L231] CALL, EXPR valid_product() [L273] int retValue_acc ; [L276] retValue_acc = 1 [L277] return (retValue_acc); [L231] RET, EXPR valid_product() [L231] tmp = valid_product() [L233] COND TRUE \read(tmp) [L235] FCALL setup() [L236] CALL runTest() [L215] CALL test() [L474] int splverifierCounter ; [L475] int tmp ; [L476] int tmp___0 ; [L477] int tmp___1 ; [L478] int tmp___2 ; [L481] splverifierCounter = 0 [L483] COND TRUE 1 [L485] COND TRUE splverifierCounter < 4 [L491] tmp = __VERIFIER_nondet_int() [L493] COND TRUE \read(tmp) [L495] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L495] RET waterRise() [L501] tmp___0 = __VERIFIER_nondet_int() [L503] COND FALSE !(\read(tmp___0)) [L511] tmp___2 = __VERIFIER_nondet_int() [L513] COND FALSE !(\read(tmp___2)) [L519] tmp___1 = __VERIFIER_nondet_int() [L521] COND TRUE \read(tmp___1) [L528] CALL timeShift() [L294] COND FALSE !(\read(pumpRunning)) [L301] COND TRUE \read(systemActive) [L303] CALL processEnvironment() [L349] int tmp ; [L352] COND FALSE !(\read(pumpRunning)) [L367] CALL processEnvironment__wrappee__lowWaterSensor() [L323] int tmp ; [L326] COND FALSE !(\read(pumpRunning)) [L341] FCALL processEnvironment__wrappee__base() [L367] RET processEnvironment__wrappee__lowWaterSensor() [L303] RET processEnvironment() [L309] CALL __utac_acc__Specification3_spec__1() [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L913] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L913] RET, EXPR isMethaneLevelCritical() [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L919] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L919] RET, EXPR getWaterLevel() [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L923] CALL, EXPR isPumpRunning() [L401] int retValue_acc ; [L404] retValue_acc = pumpRunning [L405] return (retValue_acc); [L923] RET, EXPR isPumpRunning() [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) [L929] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 451 SDtfs, 663 SDslu, 240 SDs, 0 SdLazy, 1496 SolverSat, 429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 136 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 309 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 65062 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...