/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:01:29,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:01:29,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:01:29,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:01:29,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:01:29,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:01:29,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:01:29,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:01:29,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:01:29,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:01:29,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:01:29,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:01:29,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:01:29,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:01:29,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:01:29,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:01:29,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:01:29,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:01:29,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:01:29,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:01:29,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:01:29,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:01:29,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:01:29,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:01:29,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:01:29,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:01:29,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:01:29,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:01:29,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:01:29,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:01:29,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:01:29,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:01:29,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:01:29,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:01:29,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:01:29,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:01:29,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:01:29,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:01:29,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:01:29,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:01:29,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:01:29,861 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 [2020-08-19 05:01:29,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:01:29,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:01:29,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:01:29,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:01:29,901 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:01:29,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:01:29,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:01:29,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:01:29,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:01:29,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:01:29,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:01:29,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:01:29,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:01:29,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:01:29,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:01:29,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:01:29,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:01:29,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:01:29,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:01:29,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:01:29,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:01:29,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:01:29,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:01:29,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:01:29,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:01:29,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:01:29,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:01:29,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:01:29,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:01:29,907 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=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:01:30,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:01:30,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:01:30,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:01:30,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:01:30,203 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:01:30,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-08-19 05:01:30,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cd57aa2f/aa1931cb2fe34750accf4dce624ff6c8/FLAGce3d07a8e [2020-08-19 05:01:30,751 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:01:30,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-08-19 05:01:30,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cd57aa2f/aa1931cb2fe34750accf4dce624ff6c8/FLAGce3d07a8e [2020-08-19 05:01:31,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cd57aa2f/aa1931cb2fe34750accf4dce624ff6c8 [2020-08-19 05:01:31,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:01:31,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:01:31,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:01:31,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:01:31,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:01:31,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0619bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31, skipping insertion in model container [2020-08-19 05:01:31,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:01:31,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:01:31,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:01:31,669 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:01:31,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:01:31,769 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:01:31,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31 WrapperNode [2020-08-19 05:01:31,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:01:31,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:01:31,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:01:31,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:01:31,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (1/1) ... [2020-08-19 05:01:31,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:01:31,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:01:31,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:01:31,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:01:31,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (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 [2020-08-19 05:01:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:01:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:01:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:01:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:01:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:01:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:01:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:01:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:01:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:01:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:01:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:01:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:01:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:01:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:01:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:01:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:01:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:01:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:01:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:01:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:01:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:01:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:01:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 05:01:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:01:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:01:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:01:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:01:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:01:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:01:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:01:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:01:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:01:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:01:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:01:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:01:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:01:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:01:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:01:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:01:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:01:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:01:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:01:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:01:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:01:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:01:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:01:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:01:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:01:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:01:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:01:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:01:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:01:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:01:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:01:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:01:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:01:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:01:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:01:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:01:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:01:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:01:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:01:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:01:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:01:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:01:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:01:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:01:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:01:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:01:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:01:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:01:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 05:01:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:01:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:01:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:01:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:01:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:01:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:01:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:01:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:01:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:01:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:01:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:01:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:01:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:01:31,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:01:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:01:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:01:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:01:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:01:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:01:31,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:01:32,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:01:32,957 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:01:32,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:01:32 BoogieIcfgContainer [2020-08-19 05:01:32,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:01:32,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:01:32,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:01:32,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:01:32,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:01:31" (1/3) ... [2020-08-19 05:01:32,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e006d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:01:32, skipping insertion in model container [2020-08-19 05:01:32,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:01:31" (2/3) ... [2020-08-19 05:01:32,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e006d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:01:32, skipping insertion in model container [2020-08-19 05:01:32,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:01:32" (3/3) ... [2020-08-19 05:01:32,979 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2020-08-19 05:01:32,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:01:32,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:01:33,004 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:01:33,023 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:01:33,024 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:01:33,024 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:01:33,024 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:01:33,024 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:01:33,025 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:01:33,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:01:33,025 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:01:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-19 05:01:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:01:33,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:33,056 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] [2020-08-19 05:01:33,057 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:33,061 INFO L82 PathProgramCache]: Analyzing trace with hash 578570237, now seen corresponding path program 1 times [2020-08-19 05:01:33,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:33,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210657061] [2020-08-19 05:01:33,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,663 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:33,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:01:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:01:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:01:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:01:33,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210657061] [2020-08-19 05:01:33,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:33,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:01:33,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821293594] [2020-08-19 05:01:33,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:01:33,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:01:33,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:01:33,841 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-19 05:01:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:01:35,053 INFO L93 Difference]: Finished difference Result 300 states and 394 transitions. [2020-08-19 05:01:35,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:01:35,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 05:01:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:01:35,069 INFO L225 Difference]: With dead ends: 300 [2020-08-19 05:01:35,069 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 05:01:35,074 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 [2020-08-19 05:01:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 05:01:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2020-08-19 05:01:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 05:01:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2020-08-19 05:01:35,163 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2020-08-19 05:01:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:01:35,164 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2020-08-19 05:01:35,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:01:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2020-08-19 05:01:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:01:35,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:35,169 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] [2020-08-19 05:01:35,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:01:35,170 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:35,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:35,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1188326363, now seen corresponding path program 1 times [2020-08-19 05:01:35,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:35,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062081455] [2020-08-19 05:01:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,568 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:01:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:01:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:01:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:01:35,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062081455] [2020-08-19 05:01:35,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:35,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:01:35,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778810104] [2020-08-19 05:01:35,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:01:35,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:35,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:01:35,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:01:35,636 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2020-08-19 05:01:36,032 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:01:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:01:36,874 INFO L93 Difference]: Finished difference Result 229 states and 281 transitions. [2020-08-19 05:01:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:01:36,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 05:01:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:01:36,879 INFO L225 Difference]: With dead ends: 229 [2020-08-19 05:01:36,879 INFO L226 Difference]: Without dead ends: 146 [2020-08-19 05:01:36,880 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 [2020-08-19 05:01:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-19 05:01:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-19 05:01:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 05:01:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-19 05:01:36,921 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2020-08-19 05:01:36,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:01:36,921 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-19 05:01:36,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:01:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-19 05:01:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 05:01:36,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:36,924 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] [2020-08-19 05:01:36,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:01:36,924 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:36,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1564710697, now seen corresponding path program 1 times [2020-08-19 05:01:36,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:36,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260780813] [2020-08-19 05:01:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,263 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:01:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:01:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:01:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:01:37,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260780813] [2020-08-19 05:01:37,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:37,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:01:37,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838149361] [2020-08-19 05:01:37,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:01:37,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:37,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:01:37,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:01:37,330 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2020-08-19 05:01:37,689 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:01:38,061 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:01:38,329 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:01:38,587 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:01:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:01:39,834 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-08-19 05:01:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:01:39,839 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 05:01:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:01:39,842 INFO L225 Difference]: With dead ends: 242 [2020-08-19 05:01:39,842 INFO L226 Difference]: Without dead ends: 146 [2020-08-19 05:01:39,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:01:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-19 05:01:39,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-19 05:01:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 05:01:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-19 05:01:39,881 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 58 [2020-08-19 05:01:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:01:39,882 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-19 05:01:39,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:01:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-19 05:01:39,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-19 05:01:39,886 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:39,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:01:39,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:01:39,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:39,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:39,887 INFO L82 PathProgramCache]: Analyzing trace with hash -203175812, now seen corresponding path program 1 times [2020-08-19 05:01:39,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:39,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151669974] [2020-08-19 05:01:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,236 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:01:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:01:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:01:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:01:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:01:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:01:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:01:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:01:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:01:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:01:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 05:01:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 05:01:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:01:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:01:40,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151669974] [2020-08-19 05:01:40,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:01:40,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:01:40,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190384233] [2020-08-19 05:01:40,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:01:40,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:01:40,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:01:40,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:01:40,360 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 8 states. [2020-08-19 05:01:40,715 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:01:42,316 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:01:42,648 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:01:42,927 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:01:43,303 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:01:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:01:43,701 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2020-08-19 05:01:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:01:43,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-08-19 05:01:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:01:43,716 INFO L225 Difference]: With dead ends: 363 [2020-08-19 05:01:43,717 INFO L226 Difference]: Without dead ends: 267 [2020-08-19 05:01:43,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:01:43,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-08-19 05:01:43,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2020-08-19 05:01:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-19 05:01:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-19 05:01:43,796 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 71 [2020-08-19 05:01:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:01:43,797 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-19 05:01:43,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:01:43,797 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-19 05:01:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 05:01:43,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:01:43,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:01:43,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:01:43,800 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:01:43,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:01:43,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1511330786, now seen corresponding path program 1 times [2020-08-19 05:01:43,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:01:43,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100625034] [2020-08-19 05:01:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:01:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:01:43,860 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:01:43,860 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:01:43,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:01:43,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:01:43 BoogieIcfgContainer [2020-08-19 05:01:43,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:01:43,888 INFO L168 Benchmark]: Toolchain (without parser) took 12778.06 ms. Allocated memory was 140.5 MB in the beginning and 411.6 MB in the end (delta: 271.1 MB). Free memory was 101.4 MB in the beginning and 123.1 MB in the end (delta: -21.7 MB). Peak memory consumption was 249.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:01:43,888 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:01:43,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.77 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 171.1 MB in the end (delta: -70.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:01:43,890 INFO L168 Benchmark]: Boogie Preprocessor took 85.61 ms. Allocated memory is still 203.4 MB. Free memory was 171.1 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:01:43,891 INFO L168 Benchmark]: RCFGBuilder took 1111.89 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.1 MB in the beginning and 195.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-08-19 05:01:43,892 INFO L168 Benchmark]: TraceAbstraction took 10914.51 ms. Allocated memory was 235.9 MB in the beginning and 411.6 MB in the end (delta: 175.6 MB). Free memory was 195.5 MB in the beginning and 123.1 MB in the end (delta: 72.5 MB). Peak memory consumption was 248.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:01:43,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.77 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 171.1 MB in the end (delta: -70.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.61 ms. Allocated memory is still 203.4 MB. Free memory was 171.1 MB in the beginning and 167.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1111.89 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.1 MB in the beginning and 195.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10914.51 ms. Allocated memory was 235.9 MB in the beginning and 411.6 MB in the end (delta: 175.6 MB). Free memory was 195.5 MB in the beginning and 123.1 MB in the end (delta: 72.5 MB). Peak memory consumption was 248.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L145] int cleanupTimeShifts = 4; [L286] int pumpRunning = 0; [L287] int systemActive = 1; [L709] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L224] int retValue_acc ; [L225] int tmp ; [L229] FCALL select_helpers() [L230] FCALL select_features() [L231] CALL, EXPR valid_product() [L273] int retValue_acc ; [L276] retValue_acc = 1 [L277] return (retValue_acc); [L231] RET, EXPR valid_product() [L231] tmp = valid_product() [L233] COND TRUE \read(tmp) [L235] FCALL setup() [L236] CALL runTest() [L215] CALL test() [L474] int splverifierCounter ; [L475] int tmp ; [L476] int tmp___0 ; [L477] int tmp___1 ; [L478] int tmp___2 ; [L481] splverifierCounter = 0 [L483] COND TRUE 1 [L485] COND TRUE splverifierCounter < 4 [L491] tmp = __VERIFIER_nondet_int() [L493] COND TRUE \read(tmp) [L495] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L495] RET waterRise() [L501] tmp___0 = __VERIFIER_nondet_int() [L503] COND FALSE !(\read(tmp___0)) [L511] tmp___2 = __VERIFIER_nondet_int() [L513] COND FALSE !(\read(tmp___2)) [L519] tmp___1 = __VERIFIER_nondet_int() [L521] COND TRUE \read(tmp___1) [L528] CALL timeShift() [L294] COND FALSE !(\read(pumpRunning)) [L301] COND TRUE \read(systemActive) [L303] CALL processEnvironment() [L349] int tmp ; [L352] COND FALSE !(\read(pumpRunning)) [L367] CALL processEnvironment__wrappee__lowWaterSensor() [L323] int tmp ; [L326] COND FALSE !(\read(pumpRunning)) [L341] FCALL processEnvironment__wrappee__base() [L367] RET processEnvironment__wrappee__lowWaterSensor() [L303] RET processEnvironment() [L309] CALL __utac_acc__Specification3_spec__1() [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L913] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L913] RET, EXPR isMethaneLevelCritical() [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L919] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L919] RET, EXPR getWaterLevel() [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L923] CALL, EXPR isPumpRunning() [L401] int retValue_acc ; [L404] retValue_acc = pumpRunning [L405] return (retValue_acc); [L923] RET, EXPR isPumpRunning() [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) [L929] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 452 SDtfs, 663 SDslu, 240 SDs, 0 SdLazy, 1496 SolverSat, 429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 136 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 309 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 65062 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...