/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:59:03,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:59:03,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:59:03,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:59:03,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:59:03,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:59:03,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:59:03,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:59:03,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:59:03,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:59:03,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:59:03,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:59:03,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:59:03,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:59:03,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:59:03,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:59:03,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:59:03,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:59:03,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:59:03,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:59:03,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:59:03,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:59:03,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:59:03,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:59:03,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:59:03,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:59:03,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:59:03,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:59:03,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:59:03,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:59:03,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:59:03,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:59:03,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:59:03,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:59:03,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:59:03,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:59:03,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:59:03,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:59:03,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:59:03,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:59:03,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:59:03,892 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 11:59:03,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:59:03,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:59:03,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:59:03,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:59:03,938 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:59:03,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:59:03,939 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:59:03,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:59:03,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:59:03,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:59:03,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:59:03,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:59:03,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:59:03,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:59:03,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:59:03,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:59:03,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:59:03,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:59:03,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:59:03,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:59:03,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:59:03,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:59:03,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:59:03,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:59:03,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:59:03,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:59:03,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:59:03,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:59:03,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:59:03,944 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:59:04,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:59:04,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:59:04,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:59:04,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:59:04,276 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:59:04,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c [2020-08-18 11:59:04,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc7ba96bc/958f2942a5524724804e0a8e378d7088/FLAG47a3822f8 [2020-08-18 11:59:04,891 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:59:04,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product56.cil.c [2020-08-18 11:59:04,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc7ba96bc/958f2942a5524724804e0a8e378d7088/FLAG47a3822f8 [2020-08-18 11:59:05,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc7ba96bc/958f2942a5524724804e0a8e378d7088 [2020-08-18 11:59:05,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:59:05,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:59:05,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:59:05,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:59:05,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:59:05,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750e1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05, skipping insertion in model container [2020-08-18 11:59:05,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:59:05,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:59:05,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:59:05,733 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:59:05,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:59:05,862 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:59:05,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05 WrapperNode [2020-08-18 11:59:05,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:59:05,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:59:05,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:59:05,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:59:05,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (1/1) ... [2020-08-18 11:59:05,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:59:05,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:59:05,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:59:05,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:59:05,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (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 11:59:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:59:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:59:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:59:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:59:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:59:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:59:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:59:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:59:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:59:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:59:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:59:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:59:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:59:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:59:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:59:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:59:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:59:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:59:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:59:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:59:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:59:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:59:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:59:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:59:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:59:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:59:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 11:59:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:59:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:59:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:59:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 11:59:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:59:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:59:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:59:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:59:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:59:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:59:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:59:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 11:59:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 11:59:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:59:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:59:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:59:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:59:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:59:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:59:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:59:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:59:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:59:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:59:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:59:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:59:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:59:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:59:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:59:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:59:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:59:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:59:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:59:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:59:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:59:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:59:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:59:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:59:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:59:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:59:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:59:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:59:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:59:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:59:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:59:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:59:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:59:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:59:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:59:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:59:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:59:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:59:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:59:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:59:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:59:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:59:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:59:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:59:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:59:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 11:59:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:59:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:59:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 11:59:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:59:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:59:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:59:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:59:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:59:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 11:59:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 11:59:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:59:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:59:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:59:06,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:59:07,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:59:07,321 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:59:07,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:59:07 BoogieIcfgContainer [2020-08-18 11:59:07,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:59:07,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:59:07,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:59:07,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:59:07,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:59:05" (1/3) ... [2020-08-18 11:59:07,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dff803b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:59:07, skipping insertion in model container [2020-08-18 11:59:07,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:05" (2/3) ... [2020-08-18 11:59:07,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dff803b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:59:07, skipping insertion in model container [2020-08-18 11:59:07,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:59:07" (3/3) ... [2020-08-18 11:59:07,335 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2020-08-18 11:59:07,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:59:07,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:59:07,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:59:07,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:59:07,395 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:59:07,396 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:59:07,396 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:59:07,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:59:07,396 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:59:07,396 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:59:07,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:59:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-18 11:59:07,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:59:07,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:07,435 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 11:59:07,436 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:07,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:07,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1135361186, now seen corresponding path program 1 times [2020-08-18 11:59:07,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:07,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116171650] [2020-08-18 11:59:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,077 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:08,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:59:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:59:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:59:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:08,182 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 11:59:08,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116171650] [2020-08-18 11:59:08,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:08,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:59:08,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985650205] [2020-08-18 11:59:08,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:59:08,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:08,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:59:08,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:59:08,213 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-08-18 11:59:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:09,675 INFO L93 Difference]: Finished difference Result 364 states and 474 transitions. [2020-08-18 11:59:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:59:09,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 11:59:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:09,692 INFO L225 Difference]: With dead ends: 364 [2020-08-18 11:59:09,693 INFO L226 Difference]: Without dead ends: 196 [2020-08-18 11:59:09,698 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 [2020-08-18 11:59:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-18 11:59:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2020-08-18 11:59:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-18 11:59:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-18 11:59:09,842 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 52 [2020-08-18 11:59:09,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:09,843 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-18 11:59:09,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:59:09,843 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-18 11:59:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 11:59:09,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:09,856 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 11:59:09,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:59:09,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:09,857 INFO L82 PathProgramCache]: Analyzing trace with hash 117273538, now seen corresponding path program 1 times [2020-08-18 11:59:09,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:09,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084533447] [2020-08-18 11:59:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,279 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:10,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:59:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:59:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:59:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:10,325 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 11:59:10,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084533447] [2020-08-18 11:59:10,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:10,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:59:10,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580969422] [2020-08-18 11:59:10,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:59:10,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:10,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:59:10,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:59:10,329 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-08-18 11:59:10,807 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:11,918 INFO L93 Difference]: Finished difference Result 287 states and 353 transitions. [2020-08-18 11:59:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:59:11,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 11:59:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:11,924 INFO L225 Difference]: With dead ends: 287 [2020-08-18 11:59:11,924 INFO L226 Difference]: Without dead ends: 180 [2020-08-18 11:59:11,926 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 [2020-08-18 11:59:11,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-18 11:59:11,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 150. [2020-08-18 11:59:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 11:59:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-18 11:59:12,000 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 53 [2020-08-18 11:59:12,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:12,001 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-18 11:59:12,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:59:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-18 11:59:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 11:59:12,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:12,006 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 11:59:12,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:59:12,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:12,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1326355153, now seen corresponding path program 1 times [2020-08-18 11:59:12,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:12,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686703386] [2020-08-18 11:59:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,398 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:59:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:59:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:59:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:12,483 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 11:59:12,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686703386] [2020-08-18 11:59:12,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:12,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:59:12,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715515168] [2020-08-18 11:59:12,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:59:12,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:12,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:59:12,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:59:12,486 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2020-08-18 11:59:12,882 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:13,217 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:13,476 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:13,720 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:14,464 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:16,881 INFO L93 Difference]: Finished difference Result 515 states and 641 transitions. [2020-08-18 11:59:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:59:16,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 11:59:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:16,888 INFO L225 Difference]: With dead ends: 515 [2020-08-18 11:59:16,888 INFO L226 Difference]: Without dead ends: 389 [2020-08-18 11:59:16,890 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 11:59:16,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-18 11:59:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 320. [2020-08-18 11:59:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-08-18 11:59:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 389 transitions. [2020-08-18 11:59:16,970 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 389 transitions. Word has length 58 [2020-08-18 11:59:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:16,970 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 389 transitions. [2020-08-18 11:59:16,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:59:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 389 transitions. [2020-08-18 11:59:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 11:59:16,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:16,973 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 11:59:16,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:59:16,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:16,974 INFO L82 PathProgramCache]: Analyzing trace with hash -962527068, now seen corresponding path program 1 times [2020-08-18 11:59:16,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:16,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677120279] [2020-08-18 11:59:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,271 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:17,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:59:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:59:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:59:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 11:59:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:17,364 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 11:59:17,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677120279] [2020-08-18 11:59:17,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:17,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:59:17,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952014266] [2020-08-18 11:59:17,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:59:17,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:17,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:59:17,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:59:17,367 INFO L87 Difference]: Start difference. First operand 320 states and 389 transitions. Second operand 8 states. [2020-08-18 11:59:17,815 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:19,233 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:19,649 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:19,963 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:20,230 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:21,306 INFO L93 Difference]: Finished difference Result 991 states and 1303 transitions. [2020-08-18 11:59:21,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:59:21,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 11:59:21,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:21,318 INFO L225 Difference]: With dead ends: 991 [2020-08-18 11:59:21,318 INFO L226 Difference]: Without dead ends: 695 [2020-08-18 11:59:21,321 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 11:59:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-08-18 11:59:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 621. [2020-08-18 11:59:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-08-18 11:59:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 769 transitions. [2020-08-18 11:59:21,465 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 769 transitions. Word has length 63 [2020-08-18 11:59:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:21,469 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 769 transitions. [2020-08-18 11:59:21,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:59:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 769 transitions. [2020-08-18 11:59:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 11:59:21,473 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:21,473 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 11:59:21,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:59:21,474 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:21,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1151554506, now seen corresponding path program 1 times [2020-08-18 11:59:21,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:21,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095917499] [2020-08-18 11:59:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:59:21,533 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:59:21,534 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:59:21,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:59:21,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:59:21 BoogieIcfgContainer [2020-08-18 11:59:21,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:59:21,563 INFO L168 Benchmark]: Toolchain (without parser) took 16361.77 ms. Allocated memory was 138.9 MB in the beginning and 482.9 MB in the end (delta: 343.9 MB). Free memory was 100.3 MB in the beginning and 311.1 MB in the end (delta: -210.8 MB). Peak memory consumption was 133.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:21,563 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 11:59:21,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.95 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 167.4 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:21,565 INFO L168 Benchmark]: Boogie Preprocessor took 104.98 ms. Allocated memory is still 201.9 MB. Free memory was 167.4 MB in the beginning and 162.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:21,566 INFO L168 Benchmark]: RCFGBuilder took 1357.33 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 162.7 MB in the beginning and 188.6 MB in the end (delta: -26.0 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:21,567 INFO L168 Benchmark]: TraceAbstraction took 14232.90 ms. Allocated memory was 233.8 MB in the beginning and 482.9 MB in the end (delta: 249.0 MB). Free memory was 187.2 MB in the beginning and 311.1 MB in the end (delta: -123.9 MB). Peak memory consumption was 125.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:21,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.95 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 167.4 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.98 ms. Allocated memory is still 201.9 MB. Free memory was 167.4 MB in the beginning and 162.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1357.33 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 162.7 MB in the beginning and 188.6 MB in the end (delta: -26.0 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14232.90 ms. Allocated memory was 233.8 MB in the beginning and 482.9 MB in the end (delta: 249.0 MB). Free memory was 187.2 MB in the beginning and 311.1 MB in the end (delta: -123.9 MB). Peak memory consumption was 125.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1013]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L587] int waterLevel = 1; [L588] int methaneLevelCritical = 0; [L694] int pumpRunning = 0; [L695] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L941] int splverifierCounter ; [L942] int tmp ; [L943] int tmp___0 ; [L944] int tmp___1 ; [L945] int tmp___2 ; [L948] splverifierCounter = 0 [L950] COND TRUE 1 [L952] COND TRUE splverifierCounter < 4 [L958] tmp = __VERIFIER_nondet_int() [L960] COND TRUE \read(tmp) [L962] CALL waterRise() [L605] COND TRUE waterLevel < 2 [L606] waterLevel = waterLevel + 1 [L962] RET waterRise() [L968] tmp___0 = __VERIFIER_nondet_int() [L970] COND FALSE !(\read(tmp___0)) [L978] tmp___2 = __VERIFIER_nondet_int() [L980] COND FALSE !(\read(tmp___2)) [L986] tmp___1 = __VERIFIER_nondet_int() [L988] COND TRUE \read(tmp___1) [L990] CALL stopSystem() [L920] COND FALSE !(\read(pumpRunning)) [L927] systemActive = 0 [L990] RET stopSystem() [L997] CALL timeShift() [L701] COND FALSE !(\read(pumpRunning)) [L708] COND FALSE !(\read(systemActive)) [L716] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L626] int retValue_acc ; [L629] retValue_acc = methaneLevelCritical [L630] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L658] int retValue_acc ; [L661] retValue_acc = waterLevel [L662] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L834] int retValue_acc ; [L837] retValue_acc = pumpRunning [L838] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L1013] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 600 SDtfs, 905 SDslu, 440 SDs, 0 SdLazy, 2380 SolverSat, 519 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s 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=621occurred 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: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s 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...