/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=HIGHLEXORDER --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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:46:50,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:46:50,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:46:50,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:46:50,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:46:50,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:46:50,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:46:50,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:46:50,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:46:50,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:46:50,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:46:50,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:46:50,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:46:50,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:46:50,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:46:50,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:46:50,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:46:50,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:46:50,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:46:50,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:46:50,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:46:50,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:46:50,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:46:50,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:46:50,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:46:50,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:46:50,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:46:50,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:46:50,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:46:50,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:46:50,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:46:50,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:46:50,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:46:50,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:46:50,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:46:50,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:46:50,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:46:50,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:46:50,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:46:50,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:46:50,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:46:50,895 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 18:46:50,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:46:50,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:46:50,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:46:50,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:46:50,939 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:46:50,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:46:50,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:46:50,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:46:50,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:46:50,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:46:50,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:46:50,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:46:50,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:46:50,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:46:50,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:46:50,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:46:50,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:46:50,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:46:50,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:46:50,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:46:50,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:46:50,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:46:50,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:46:50,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:46:50,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:46:50,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:46:50,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:46:50,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:46:50,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:46:50,946 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:46:51,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:46:51,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:46:51,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:46:51,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:46:51,235 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:46:51,236 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-21 18:46:51,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf166007/12aedec21bdc443a9f78c9b935fd50c2/FLAGf6ccb84c7 [2020-08-21 18:46:51,781 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:46:51,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-21 18:46:51,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf166007/12aedec21bdc443a9f78c9b935fd50c2/FLAGf6ccb84c7 [2020-08-21 18:46:52,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acf166007/12aedec21bdc443a9f78c9b935fd50c2 [2020-08-21 18:46:52,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:46:52,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:46:52,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:46:52,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:46:52,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:46:52,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0619bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52, skipping insertion in model container [2020-08-21 18:46:52,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:46:52,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:46:52,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:46:52,618 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:46:52,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:46:52,751 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:46:52,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52 WrapperNode [2020-08-21 18:46:52,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:46:52,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:46:52,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:46:52,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:46:52,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (1/1) ... [2020-08-21 18:46:52,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:46:52,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:46:52,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:46:52,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:46:52,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (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 18:46:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:46:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:46:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:46:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:46:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:46:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:46:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:46:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:46:52,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:46:52,935 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:46:52,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:46:52,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 18:46:52,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:46:52,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:46:52,936 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:46:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:46:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:46:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:46:52,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 18:46:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:46:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:46:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:46:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:46:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:46:52,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:46:52,939 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:46:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:46:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 18:46:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:46:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:46:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:46:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:46:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:46:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 18:46:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:46:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:46:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:46:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:46:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:46:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:46:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:46:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:46:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:46:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:46:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:46:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:46:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:46:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:46:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:46:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:46:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:46:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:46:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:46:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:46:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:46:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:46:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:46:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:46:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:46:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:46:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:46:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 18:46:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:46:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:46:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:46:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:46:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:46:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 18:46:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:46:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:46:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 18:46:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 18:46:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:46:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:46:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:46:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:46:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:46:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:46:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:46:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:46:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:46:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:46:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:46:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:46:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:46:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:46:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:46:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:46:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:46:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:46:54,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:46:54,039 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:46:54,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:46:54 BoogieIcfgContainer [2020-08-21 18:46:54,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:46:54,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:46:54,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:46:54,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:46:54,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:46:52" (1/3) ... [2020-08-21 18:46:54,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda1fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:46:54, skipping insertion in model container [2020-08-21 18:46:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:52" (2/3) ... [2020-08-21 18:46:54,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda1fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:46:54, skipping insertion in model container [2020-08-21 18:46:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:46:54" (3/3) ... [2020-08-21 18:46:54,052 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-08-21 18:46:54,062 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:46:54,069 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:46:54,083 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:46:54,107 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:46:54,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:46:54,108 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:46:54,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:46:54,108 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:46:54,109 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:46:54,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:46:54,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:46:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-08-21 18:46:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:46:54,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:54,141 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 18:46:54,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:54,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:54,148 INFO L82 PathProgramCache]: Analyzing trace with hash -93036640, now seen corresponding path program 1 times [2020-08-21 18:46:54,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:54,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388345333] [2020-08-21 18:46:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,746 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:46:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:46:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:46:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:54,844 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 18:46:54,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388345333] [2020-08-21 18:46:54,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:54,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:46:54,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562373155] [2020-08-21 18:46:54,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:46:54,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:54,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:46:54,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:46:54,872 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-08-21 18:46:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:55,937 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-08-21 18:46:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:46:55,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 18:46:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:55,955 INFO L225 Difference]: With dead ends: 291 [2020-08-21 18:46:55,955 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 18:46:55,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:46:55,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 18:46:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-08-21 18:46:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 18:46:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-08-21 18:46:56,049 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-08-21 18:46:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:56,049 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-08-21 18:46:56,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:46:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-08-21 18:46:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 18:46:56,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:56,054 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 18:46:56,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:46:56,054 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1403357497, now seen corresponding path program 1 times [2020-08-21 18:46:56,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:56,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662998232] [2020-08-21 18:46:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,459 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:46:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:46:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:46:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 18:46:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,499 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 18:46:56,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662998232] [2020-08-21 18:46:56,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:56,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:46:56,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940833836] [2020-08-21 18:46:56,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:46:56,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:46:56,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:46:56,503 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-08-21 18:46:56,927 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:46:57,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:57,722 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-08-21 18:46:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:46:57,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 18:46:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:57,726 INFO L225 Difference]: With dead ends: 224 [2020-08-21 18:46:57,726 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 18:46:57,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:46:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 18:46:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 18:46:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 18:46:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-21 18:46:57,763 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-08-21 18:46:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:57,763 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-21 18:46:57,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:46:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-21 18:46:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 18:46:57,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:57,766 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] [2020-08-21 18:46:57,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:46:57,767 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:57,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1713517472, now seen corresponding path program 1 times [2020-08-21 18:46:57,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:57,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758171667] [2020-08-21 18:46:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,110 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:46:58,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:46:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:46:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 18:46:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:58,205 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 18:46:58,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758171667] [2020-08-21 18:46:58,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:58,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:46:58,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125010306] [2020-08-21 18:46:58,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:46:58,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:58,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:46:58,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:46:58,214 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states. [2020-08-21 18:46:58,617 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:46:58,942 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:46:59,184 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:46:59,404 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:00,399 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-08-21 18:47:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:47:00,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 18:47:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:00,402 INFO L225 Difference]: With dead ends: 233 [2020-08-21 18:47:00,402 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 18:47:00,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 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 18:47:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 18:47:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 18:47:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 18:47:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-08-21 18:47:00,437 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-08-21 18:47:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:00,437 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-08-21 18:47:00,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:47:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-08-21 18:47:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 18:47:00,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:00,440 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] [2020-08-21 18:47:00,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:47:00,441 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash -949895556, now seen corresponding path program 1 times [2020-08-21 18:47:00,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:00,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904694520] [2020-08-21 18:47:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,711 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:47:00,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:47:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:47:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:47:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:47:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:47:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 18:47:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 18:47:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:00,836 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 18:47:00,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904694520] [2020-08-21 18:47:00,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:00,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:47:00,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644295459] [2020-08-21 18:47:00,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:47:00,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:00,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:47:00,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:47:00,840 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-08-21 18:47:01,199 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:02,588 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:02,868 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:03,104 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:47:03,474 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:47:03,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:03,800 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-08-21 18:47:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:47:03,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-08-21 18:47:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:03,805 INFO L225 Difference]: With dead ends: 348 [2020-08-21 18:47:03,805 INFO L226 Difference]: Without dead ends: 256 [2020-08-21 18:47:03,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:47:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-21 18:47:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-08-21 18:47:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-21 18:47:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-08-21 18:47:03,858 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-08-21 18:47:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:03,859 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-08-21 18:47:03,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:47:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-08-21 18:47:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 18:47:03,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:03,862 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] [2020-08-21 18:47:03,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:47:03,862 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:03,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1700935146, now seen corresponding path program 1 times [2020-08-21 18:47:03,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:03,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601446329] [2020-08-21 18:47:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:47:03,923 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:47:03,923 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:47:03,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:47:03,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:47:03 BoogieIcfgContainer [2020-08-21 18:47:03,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:47:03,950 INFO L168 Benchmark]: Toolchain (without parser) took 11796.52 ms. Allocated memory was 141.0 MB in the beginning and 410.0 MB in the end (delta: 269.0 MB). Free memory was 103.2 MB in the beginning and 170.6 MB in the end (delta: -67.4 MB). Peak memory consumption was 201.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:03,951 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:47:03,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.80 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 173.0 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:03,953 INFO L168 Benchmark]: Boogie Preprocessor took 94.15 ms. Allocated memory is still 204.5 MB. Free memory was 173.0 MB in the beginning and 168.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:03,954 INFO L168 Benchmark]: RCFGBuilder took 1196.69 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 168.3 MB in the beginning and 194.1 MB in the end (delta: -25.8 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:03,954 INFO L168 Benchmark]: TraceAbstraction took 9903.24 ms. Allocated memory was 235.9 MB in the beginning and 410.0 MB in the end (delta: 174.1 MB). Free memory was 194.1 MB in the beginning and 170.6 MB in the end (delta: 23.5 MB). Peak memory consumption was 197.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:47:03,958 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 597.80 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 173.0 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.15 ms. Allocated memory is still 204.5 MB. Free memory was 173.0 MB in the beginning and 168.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1196.69 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 168.3 MB in the beginning and 194.1 MB in the end (delta: -25.8 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9903.24 ms. Allocated memory was 235.9 MB in the beginning and 410.0 MB in the end (delta: 174.1 MB). Free memory was 194.1 MB in the beginning and 170.6 MB in the end (delta: 23.5 MB). Peak memory consumption was 197.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 581 SDslu, 235 SDs, 0 SdLazy, 1451 SolverSat, 331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 130 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 63992 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...