/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:33:23,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:33:23,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:33:23,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:33:23,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:33:23,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:33:23,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:33:23,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:33:23,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:33:23,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:33:23,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:33:23,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:33:23,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:33:23,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:33:23,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:33:23,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:33:23,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:33:23,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:33:23,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:33:23,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:33:23,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:33:23,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:33:23,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:33:23,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:33:23,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:33:23,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:33:23,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:33:23,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:33:23,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:33:23,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:33:23,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:33:23,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:33:23,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:33:23,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:33:23,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:33:23,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:33:23,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:33:23,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:33:23,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:33:23,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:33:23,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:33:23,949 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 [2020-08-18 22:33:23,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:33:23,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:33:23,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:33:23,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:33:23,982 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:33:23,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:33:23,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:33:23,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:33:23,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:33:23,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:33:23,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:33:23,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:33:23,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:33:23,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:33:23,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:33:23,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:33:23,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:33:23,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:33:23,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:33:23,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:33:23,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:33:23,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:33:23,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:33:23,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:33:23,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:33:23,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:33:23,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:33:23,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:33:23,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:33:23,987 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=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:33:24,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:33:24,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:33:24,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:33:24,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:33:24,325 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:33:24,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c [2020-08-18 22:33:24,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40cab7794/896e1537a1c445bd8aba8b501337913b/FLAG24e215664 [2020-08-18 22:33:24,987 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:33:24,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c [2020-08-18 22:33:25,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40cab7794/896e1537a1c445bd8aba8b501337913b/FLAG24e215664 [2020-08-18 22:33:25,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40cab7794/896e1537a1c445bd8aba8b501337913b [2020-08-18 22:33:25,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:33:25,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:33:25,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:33:25,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:33:25,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:33:25,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:25,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25, skipping insertion in model container [2020-08-18 22:33:25,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:25,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:33:25,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:33:25,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:33:25,809 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:33:25,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:33:25,926 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:33:25,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25 WrapperNode [2020-08-18 22:33:25,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:33:25,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:33:25,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:33:25,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:33:25,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:25,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:25,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:25,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:26,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:26,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:26,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (1/1) ... [2020-08-18 22:33:26,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:33:26,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:33:26,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:33:26,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:33:26,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (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 [2020-08-18 22:33:26,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:33:26,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:33:26,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:33:26,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:33:26,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:33:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:33:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:33:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:33:26,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:33:26,147 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:33:26,148 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:33:26,148 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:33:26,148 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 22:33:26,148 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:33:26,149 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 22:33:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:33:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:33:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:33:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:33:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:33:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 22:33:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 22:33:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 22:33:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:33:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:33:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:33:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:33:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:33:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:33:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 22:33:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:33:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:33:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:33:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:33:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:33:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:33:26,154 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:33:26,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:33:26,155 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:33:26,155 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:33:26,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 22:33:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:33:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:33:26,155 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:33:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:33:26,157 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:33:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:33:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:33:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:33:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:33:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:33:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:33:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:33:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:33:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:33:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:33:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:33:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:33:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:33:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:33:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:33:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:33:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:33:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 22:33:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 22:33:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:33:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:33:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:33:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:33:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:33:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:33:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 22:33:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:33:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:33:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:33:26,164 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:33:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 22:33:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:33:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:33:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 22:33:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 22:33:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:33:26,165 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 22:33:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:33:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:33:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:33:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:33:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:33:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:33:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:33:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:33:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:33:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:33:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:33:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:33:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:33:27,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:33:27,402 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:33:27,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:33:27 BoogieIcfgContainer [2020-08-18 22:33:27,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:33:27,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:33:27,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:33:27,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:33:27,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:33:25" (1/3) ... [2020-08-18 22:33:27,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f11877c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:33:27, skipping insertion in model container [2020-08-18 22:33:27,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:25" (2/3) ... [2020-08-18 22:33:27,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f11877c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:33:27, skipping insertion in model container [2020-08-18 22:33:27,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:33:27" (3/3) ... [2020-08-18 22:33:27,416 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product32.cil.c [2020-08-18 22:33:27,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:33:27,435 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:33:27,449 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:33:27,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:33:27,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:33:27,476 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:33:27,476 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:33:27,476 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:33:27,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:33:27,477 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:33:27,477 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:33:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-18 22:33:27,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:33:27,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:27,514 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] [2020-08-18 22:33:27,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:27,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash 628645976, now seen corresponding path program 1 times [2020-08-18 22:33:27,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:27,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601031605] [2020-08-18 22:33:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,276 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:33:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:33:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:33:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:28,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601031605] [2020-08-18 22:33:28,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:28,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:33:28,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773802711] [2020-08-18 22:33:28,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:33:28,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:28,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:33:28,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:33:28,405 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-18 22:33:29,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:29,619 INFO L93 Difference]: Finished difference Result 314 states and 413 transitions. [2020-08-18 22:33:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:33:29,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 22:33:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:29,637 INFO L225 Difference]: With dead ends: 314 [2020-08-18 22:33:29,637 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 22:33:29,642 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 [2020-08-18 22:33:29,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 22:33:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2020-08-18 22:33:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-18 22:33:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-18 22:33:29,774 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 52 [2020-08-18 22:33:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:29,775 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-18 22:33:29,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:33:29,775 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-18 22:33:29,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 22:33:29,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:29,780 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] [2020-08-18 22:33:29,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:33:29,780 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:29,781 INFO L82 PathProgramCache]: Analyzing trace with hash 364620848, now seen corresponding path program 1 times [2020-08-18 22:33:29,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:29,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844426185] [2020-08-18 22:33:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,122 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:30,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:33:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:33:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:30,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844426185] [2020-08-18 22:33:30,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:30,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:33:30,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660483859] [2020-08-18 22:33:30,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:33:30,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:30,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:33:30,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:33:30,171 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 4 states. [2020-08-18 22:33:30,560 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:33:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:31,478 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2020-08-18 22:33:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:33:31,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 22:33:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:31,483 INFO L225 Difference]: With dead ends: 237 [2020-08-18 22:33:31,483 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 22:33:31,484 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 [2020-08-18 22:33:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 22:33:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2020-08-18 22:33:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 22:33:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-18 22:33:31,527 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 53 [2020-08-18 22:33:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:31,528 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-18 22:33:31,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:33:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-18 22:33:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 22:33:31,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:31,531 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] [2020-08-18 22:33:31,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:33:31,531 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:31,532 INFO L82 PathProgramCache]: Analyzing trace with hash -840364754, now seen corresponding path program 1 times [2020-08-18 22:33:31,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:31,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72989662] [2020-08-18 22:33:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:31,858 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:33:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:31,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:33:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 22:33:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:32,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72989662] [2020-08-18 22:33:32,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:32,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:33:32,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709102523] [2020-08-18 22:33:32,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:33:32,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:32,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:33:32,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:33:32,003 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 8 states. [2020-08-18 22:33:32,335 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:32,652 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:32,898 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:33,147 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:33,900 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:33:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:35,784 INFO L93 Difference]: Finished difference Result 439 states and 548 transitions. [2020-08-18 22:33:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:33:35,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 22:33:35,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:35,793 INFO L225 Difference]: With dead ends: 439 [2020-08-18 22:33:35,793 INFO L226 Difference]: Without dead ends: 337 [2020-08-18 22:33:35,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:33:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-18 22:33:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-08-18 22:33:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-18 22:33:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 331 transitions. [2020-08-18 22:33:35,889 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 331 transitions. Word has length 58 [2020-08-18 22:33:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:35,890 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 331 transitions. [2020-08-18 22:33:35,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:33:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 331 transitions. [2020-08-18 22:33:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 22:33:35,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:35,894 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] [2020-08-18 22:33:35,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:33:35,894 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:35,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:35,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1271614513, now seen corresponding path program 1 times [2020-08-18 22:33:35,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:35,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149378953] [2020-08-18 22:33:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,243 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:36,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:33:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:33:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:33:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:36,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149378953] [2020-08-18 22:33:36,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:36,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:33:36,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584692451] [2020-08-18 22:33:36,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:33:36,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:36,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:33:36,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:33:36,342 INFO L87 Difference]: Start difference. First operand 272 states and 331 transitions. Second operand 8 states. [2020-08-18 22:33:36,802 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:38,127 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:38,468 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:38,767 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:39,056 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:39,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:39,810 INFO L93 Difference]: Finished difference Result 839 states and 1103 transitions. [2020-08-18 22:33:39,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:33:39,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 22:33:39,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:39,818 INFO L225 Difference]: With dead ends: 839 [2020-08-18 22:33:39,819 INFO L226 Difference]: Without dead ends: 591 [2020-08-18 22:33:39,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:33:39,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-08-18 22:33:39,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 521. [2020-08-18 22:33:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-08-18 22:33:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 649 transitions. [2020-08-18 22:33:39,932 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 649 transitions. Word has length 63 [2020-08-18 22:33:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:39,933 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 649 transitions. [2020-08-18 22:33:39,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:33:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 649 transitions. [2020-08-18 22:33:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 22:33:39,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:39,937 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] [2020-08-18 22:33:39,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:33:39,938 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:39,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1708991285, now seen corresponding path program 1 times [2020-08-18 22:33:39,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:39,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515525335] [2020-08-18 22:33:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:33:39,993 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:33:39,993 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:33:39,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:33:40,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:33:40 BoogieIcfgContainer [2020-08-18 22:33:40,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:33:40,022 INFO L168 Benchmark]: Toolchain (without parser) took 14739.45 ms. Allocated memory was 139.5 MB in the beginning and 472.4 MB in the end (delta: 332.9 MB). Free memory was 101.6 MB in the beginning and 115.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 319.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:40,023 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:33:40,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.92 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 168.6 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:40,025 INFO L168 Benchmark]: Boogie Preprocessor took 122.25 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 163.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:40,026 INFO L168 Benchmark]: RCFGBuilder took 1357.42 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 163.8 MB in the beginning and 192.2 MB in the end (delta: -28.4 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:40,027 INFO L168 Benchmark]: TraceAbstraction took 12610.87 ms. Allocated memory was 235.9 MB in the beginning and 472.4 MB in the end (delta: 236.5 MB). Free memory was 190.7 MB in the beginning and 115.3 MB in the end (delta: 75.4 MB). Peak memory consumption was 311.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:40,031 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.92 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 168.6 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.25 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 163.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1357.42 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 163.8 MB in the beginning and 192.2 MB in the end (delta: -28.4 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12610.87 ms. Allocated memory was 235.9 MB in the beginning and 472.4 MB in the end (delta: 236.5 MB). Free memory was 190.7 MB in the beginning and 115.3 MB in the end (delta: 75.4 MB). Peak memory consumption was 311.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 712]: 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; [L489] int pumpRunning = 0; [L490] int systemActive = 1; [L717] int cleanupTimeShifts = 4; [L886] int waterLevel = 1; [L887] int methaneLevelCritical = 0; [L793] int retValue_acc ; [L794] int tmp ; [L798] FCALL select_helpers() [L799] FCALL select_features() [L800] CALL, EXPR valid_product() [L877] int retValue_acc ; [L880] retValue_acc = 1 [L881] return (retValue_acc); [L800] RET, EXPR valid_product() [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) [L804] FCALL setup() [L805] CALL runTest() [L784] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L904] COND TRUE waterLevel < 2 [L905] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND FALSE !(\read(tmp___2)) [L458] tmp___1 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___1) [L462] CALL stopSystem() [L688] COND FALSE !(\read(pumpRunning)) [L695] systemActive = 0 [L462] RET stopSystem() [L469] CALL timeShift() [L497] COND FALSE !(\read(pumpRunning)) [L504] COND FALSE !(\read(systemActive)) [L512] CALL __utac_acc__Specification3_spec__1() [L818] int tmp ; [L819] int tmp___0 ; [L820] int tmp___1 ; [L824] CALL, EXPR isMethaneLevelCritical() [L925] int retValue_acc ; [L928] retValue_acc = methaneLevelCritical [L929] return (retValue_acc); [L824] RET, EXPR isMethaneLevelCritical() [L824] tmp = isMethaneLevelCritical() [L826] COND FALSE !(\read(tmp)) [L830] CALL, EXPR getWaterLevel() [L957] int retValue_acc ; [L960] retValue_acc = waterLevel [L961] return (retValue_acc); [L830] RET, EXPR getWaterLevel() [L830] tmp___0 = getWaterLevel() [L832] COND TRUE tmp___0 == 2 [L834] CALL, EXPR isPumpRunning() [L621] int retValue_acc ; [L624] retValue_acc = pumpRunning [L625] return (retValue_acc); [L834] RET, EXPR isPumpRunning() [L834] tmp___1 = isPumpRunning() [L836] COND FALSE !(\read(tmp___1)) [L840] CALL __automaton_fail() [L712] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 244 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 517 SDtfs, 813 SDslu, 376 SDs, 0 SdLazy, 1979 SolverSat, 520 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=521occurred 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 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...