/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:17:37,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:17:37,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:17:37,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:17:37,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:17:37,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:17:37,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:17:37,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:17:37,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:17:37,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:17:37,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:17:37,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:17:37,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:17:37,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:17:37,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:17:37,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:17:37,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:17:37,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:17:37,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:17:37,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:17:37,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:17:37,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:17:37,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:17:37,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:17:37,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:17:37,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:17:37,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:17:37,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:17:37,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:17:37,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:17:37,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:17:37,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:17:37,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:17:37,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:17:37,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:17:37,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:17:37,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:17:37,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:17:37,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:17:37,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:17:37,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:17:37,838 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 [2020-08-22 05:17:37,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:17:37,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:17:37,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:17:37,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:17:37,862 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:17:37,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:17:37,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:17:37,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:17:37,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:17:37,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:17:37,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:17:37,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:17:37,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:17:37,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:17:37,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:17:37,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:17:37,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:17:37,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:17:37,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:17:37,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:17:37,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:17:37,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:17:37,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:17:37,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:17:37,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:17:37,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:17:37,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:17:37,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:17:37,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:17:37,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:17:38,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:17:38,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:17:38,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:17:38,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:17:38,189 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:17:38,190 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c [2020-08-22 05:17:38,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1985c83bf/c648e5bc5ae348eaa86c6835ed11c4f3/FLAG642520501 [2020-08-22 05:17:38,838 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:17:38,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c [2020-08-22 05:17:38,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1985c83bf/c648e5bc5ae348eaa86c6835ed11c4f3/FLAG642520501 [2020-08-22 05:17:39,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1985c83bf/c648e5bc5ae348eaa86c6835ed11c4f3 [2020-08-22 05:17:39,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:17:39,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:17:39,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:39,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:17:39,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:17:39,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202a755b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39, skipping insertion in model container [2020-08-22 05:17:39,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:17:39,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:17:39,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:39,636 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:17:39,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:39,748 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:17:39,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39 WrapperNode [2020-08-22 05:17:39,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:39,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:17:39,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:17:39,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:17:39,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (1/1) ... [2020-08-22 05:17:39,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:17:39,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:17:39,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:17:39,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:17:39,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (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 [2020-08-22 05:17:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:17:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:17:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:17:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:17:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:17:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:17:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:17:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:17:39,975 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:17:39,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:17:39,975 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:17:39,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:17:39,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:17:39,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:39,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:39,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:39,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:17:39,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:17:39,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:17:39,977 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:17:39,978 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:17:39,978 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:17:39,978 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-22 05:17:39,979 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:17:39,979 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:17:39,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:17:39,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:17:39,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:17:39,980 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:17:39,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:17:39,980 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:17:39,980 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:17:39,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:17:39,980 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:17:39,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:17:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:17:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:17:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:17:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:17:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:17:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:17:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:17:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:17:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-22 05:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:17:39,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:17:39,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:17:41,104 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:17:41,104 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:17:41,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:41 BoogieIcfgContainer [2020-08-22 05:17:41,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:17:41,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:17:41,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:17:41,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:17:41,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:17:39" (1/3) ... [2020-08-22 05:17:41,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcb5aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:41, skipping insertion in model container [2020-08-22 05:17:41,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:39" (2/3) ... [2020-08-22 05:17:41,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcb5aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:41, skipping insertion in model container [2020-08-22 05:17:41,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:41" (3/3) ... [2020-08-22 05:17:41,123 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product10.cil.c [2020-08-22 05:17:41,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:17:41,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:17:41,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:17:41,177 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:17:41,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:17:41,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:17:41,178 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:17:41,178 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:17:41,178 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:17:41,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:17:41,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:17:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2020-08-22 05:17:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:17:41,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:41,213 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] [2020-08-22 05:17:41,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:41,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1414244218, now seen corresponding path program 1 times [2020-08-22 05:17:41,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:41,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608158541] [2020-08-22 05:17:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,885 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:17:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:41,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608158541] [2020-08-22 05:17:41,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:41,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:17:41,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902327616] [2020-08-22 05:17:42,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:17:42,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:42,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:17:42,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:17:42,026 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 3 states. [2020-08-22 05:17:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:42,917 INFO L93 Difference]: Finished difference Result 220 states and 294 transitions. [2020-08-22 05:17:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:17:42,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 05:17:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:42,934 INFO L225 Difference]: With dead ends: 220 [2020-08-22 05:17:42,934 INFO L226 Difference]: Without dead ends: 120 [2020-08-22 05:17:42,940 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 [2020-08-22 05:17:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-22 05:17:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2020-08-22 05:17:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-22 05:17:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-08-22 05:17:43,024 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 52 [2020-08-22 05:17:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:43,025 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-08-22 05:17:43,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:17:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-08-22 05:17:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 05:17:43,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:43,029 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] [2020-08-22 05:17:43,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:17:43,029 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:43,030 INFO L82 PathProgramCache]: Analyzing trace with hash -803860910, now seen corresponding path program 1 times [2020-08-22 05:17:43,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:43,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085538719] [2020-08-22 05:17:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,356 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:43,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:17:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:17:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:17:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:43,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085538719] [2020-08-22 05:17:43,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:43,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:17:43,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529878076] [2020-08-22 05:17:43,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:17:43,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:43,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:17:43,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:17:43,407 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 4 states. [2020-08-22 05:17:43,821 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:44,349 INFO L93 Difference]: Finished difference Result 149 states and 181 transitions. [2020-08-22 05:17:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:17:44,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 05:17:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:44,356 INFO L225 Difference]: With dead ends: 149 [2020-08-22 05:17:44,356 INFO L226 Difference]: Without dead ends: 104 [2020-08-22 05:17:44,357 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 [2020-08-22 05:17:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-22 05:17:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-08-22 05:17:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-22 05:17:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-08-22 05:17:44,388 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 53 [2020-08-22 05:17:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:44,389 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-08-22 05:17:44,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:17:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-08-22 05:17:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 05:17:44,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:44,391 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] [2020-08-22 05:17:44,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:17:44,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:44,392 INFO L82 PathProgramCache]: Analyzing trace with hash 9396391, now seen corresponding path program 1 times [2020-08-22 05:17:44,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:44,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275790739] [2020-08-22 05:17:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,702 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:17:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:44,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275790739] [2020-08-22 05:17:44,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:44,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:17:44,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258476695] [2020-08-22 05:17:44,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:17:44,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:44,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:17:44,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:17:44,803 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 8 states. [2020-08-22 05:17:45,171 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:45,453 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:45,691 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:45,954 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:46,662 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2020-08-22 05:17:46,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:17:46,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 05:17:46,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:46,666 INFO L225 Difference]: With dead ends: 162 [2020-08-22 05:17:46,666 INFO L226 Difference]: Without dead ends: 104 [2020-08-22 05:17:46,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:17:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-22 05:17:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-08-22 05:17:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-22 05:17:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-22 05:17:46,693 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 58 [2020-08-22 05:17:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:46,693 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-22 05:17:46,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:17:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-22 05:17:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:17:46,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:46,696 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] [2020-08-22 05:17:46,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:17:46,697 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:46,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:46,697 INFO L82 PathProgramCache]: Analyzing trace with hash 446188768, now seen corresponding path program 1 times [2020-08-22 05:17:46,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:46,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415358112] [2020-08-22 05:17:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:46,991 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:17:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:17:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:17:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:17:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:47,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415358112] [2020-08-22 05:17:47,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:47,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:17:47,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57125927] [2020-08-22 05:17:47,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:17:47,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:47,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:17:47,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:17:47,052 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 7 states. [2020-08-22 05:17:47,367 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:48,257 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:48,533 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:48,793 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:49,028 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:49,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:49,306 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2020-08-22 05:17:49,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:17:49,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-22 05:17:49,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:49,311 INFO L225 Difference]: With dead ends: 209 [2020-08-22 05:17:49,311 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 05:17:49,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:17:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 05:17:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2020-08-22 05:17:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-22 05:17:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-08-22 05:17:49,369 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 61 [2020-08-22 05:17:49,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:49,369 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-08-22 05:17:49,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:17:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-08-22 05:17:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 05:17:49,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:49,373 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] [2020-08-22 05:17:49,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:17:49,373 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:49,374 INFO L82 PathProgramCache]: Analyzing trace with hash 236169914, now seen corresponding path program 1 times [2020-08-22 05:17:49,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:49,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568720308] [2020-08-22 05:17:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,635 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:49,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:17:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:17:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:17:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 05:17:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 05:17:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:49,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568720308] [2020-08-22 05:17:49,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:49,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:17:49,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392183445] [2020-08-22 05:17:49,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:17:49,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:49,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:17:49,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:17:49,702 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 5 states. [2020-08-22 05:17:49,999 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:50,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:50,534 INFO L93 Difference]: Finished difference Result 205 states and 247 transitions. [2020-08-22 05:17:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 05:17:50,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-08-22 05:17:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:50,541 INFO L225 Difference]: With dead ends: 205 [2020-08-22 05:17:50,541 INFO L226 Difference]: Without dead ends: 136 [2020-08-22 05:17:50,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:17:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-22 05:17:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 123. [2020-08-22 05:17:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 05:17:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2020-08-22 05:17:50,570 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 65 [2020-08-22 05:17:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:50,570 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2020-08-22 05:17:50,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:17:50,570 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2020-08-22 05:17:50,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 05:17:50,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:50,573 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] [2020-08-22 05:17:50,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:17:50,573 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:50,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:50,573 INFO L82 PathProgramCache]: Analyzing trace with hash 993675046, now seen corresponding path program 1 times [2020-08-22 05:17:50,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:50,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676069617] [2020-08-22 05:17:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:17:50,638 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:17:50,639 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:17:50,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:17:50,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:17:50 BoogieIcfgContainer [2020-08-22 05:17:50,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:17:50,667 INFO L168 Benchmark]: Toolchain (without parser) took 11552.82 ms. Allocated memory was 140.5 MB in the beginning and 401.1 MB in the end (delta: 260.6 MB). Free memory was 102.1 MB in the beginning and 244.4 MB in the end (delta: -142.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:17:50,668 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-22 05:17:50,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.97 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 174.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:17:50,673 INFO L168 Benchmark]: Boogie Preprocessor took 130.16 ms. Allocated memory is still 205.5 MB. Free memory was 174.1 MB in the beginning and 170.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 05:17:50,674 INFO L168 Benchmark]: RCFGBuilder took 1227.79 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 170.1 MB in the beginning and 199.6 MB in the end (delta: -29.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:17:50,675 INFO L168 Benchmark]: TraceAbstraction took 9549.34 ms. Allocated memory was 235.4 MB in the beginning and 401.1 MB in the end (delta: 165.7 MB). Free memory was 199.6 MB in the beginning and 244.4 MB in the end (delta: -44.8 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:17:50,681 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.97 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 102.1 MB in the beginning and 174.1 MB in the end (delta: -72.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.16 ms. Allocated memory is still 205.5 MB. Free memory was 174.1 MB in the beginning and 170.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1227.79 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 170.1 MB in the beginning and 199.6 MB in the end (delta: -29.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9549.34 ms. Allocated memory was 235.4 MB in the beginning and 401.1 MB in the end (delta: 165.7 MB). Free memory was 199.6 MB in the beginning and 244.4 MB in the end (delta: -44.8 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 168]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] int waterLevel = 1; [L85] int methaneLevelCritical = 0; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L613] int pumpRunning = 0; [L614] int systemActive = 1; [L781] int cleanupTimeShifts = 4; [L854] int retValue_acc ; [L855] int tmp ; [L859] FCALL select_helpers() [L860] FCALL select_features() [L861] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L861] RET, EXPR valid_product() [L861] tmp = valid_product() [L863] COND TRUE \read(tmp) [L865] FCALL setup() [L866] CALL runTest() [L848] CALL test() [L543] int splverifierCounter ; [L544] int tmp ; [L545] int tmp___0 ; [L546] int tmp___1 ; [L547] int tmp___2 ; [L550] splverifierCounter = 0 [L552] COND TRUE 1 [L554] COND TRUE splverifierCounter < 4 [L560] tmp = __VERIFIER_nondet_int() [L562] COND TRUE \read(tmp) [L564] CALL waterRise() [L102] COND TRUE waterLevel < 2 [L103] waterLevel = waterLevel + 1 [L564] RET waterRise() [L570] tmp___0 = __VERIFIER_nondet_int() [L572] COND FALSE !(\read(tmp___0)) [L580] tmp___2 = __VERIFIER_nondet_int() [L582] COND FALSE !(\read(tmp___2)) [L588] tmp___1 = __VERIFIER_nondet_int() [L590] COND FALSE !(\read(tmp___1)) [L597] CALL timeShift() [L621] COND FALSE !(\read(pumpRunning)) [L628] COND TRUE \read(systemActive) [L630] FCALL processEnvironment() [L636] CALL __utac_acc__Specification3_spec__1() [L748] int tmp ; [L749] int tmp___0 ; [L750] int tmp___1 ; [L754] CALL, EXPR isMethaneLevelCritical() [L123] int retValue_acc ; [L126] retValue_acc = methaneLevelCritical [L127] return (retValue_acc); [L754] RET, EXPR isMethaneLevelCritical() [L754] tmp = isMethaneLevelCritical() [L756] COND FALSE !(\read(tmp)) [L760] CALL, EXPR getWaterLevel() [L155] int retValue_acc ; [L158] retValue_acc = waterLevel [L159] return (retValue_acc); [L760] RET, EXPR getWaterLevel() [L760] tmp___0 = getWaterLevel() [L762] COND TRUE tmp___0 == 2 [L764] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L764] RET, EXPR isPumpRunning() [L764] tmp___1 = isPumpRunning() [L766] COND FALSE !(\read(tmp___1)) [L770] CALL __automaton_fail() [L168] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 208 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 386 SDtfs, 474 SDslu, 214 SDs, 0 SdLazy, 1003 SolverSat, 275 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=0, 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, 5 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...