/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:03:26,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:03:26,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:03:26,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:03:26,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:03:26,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:03:26,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:03:26,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:03:26,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:03:26,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:03:26,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:03:26,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:03:26,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:03:26,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:03:26,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:03:26,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:03:26,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:03:26,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:03:26,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:03:26,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:03:26,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:03:26,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:03:26,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:03:26,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:03:26,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:03:26,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:03:26,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:03:26,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:03:26,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:03:26,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:03:26,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:03:26,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:03:26,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:03:26,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:03:26,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:03:26,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:03:26,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:03:26,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:03:26,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:03:26,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:03:26,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:03:26,845 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 02:03:26,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:03:26,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:03:26,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:03:26,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:03:26,897 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:03:26,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:03:26,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:03:26,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:03:26,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:03:26,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:03:26,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:03:26,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:03:26,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:03:26,904 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:03:26,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:03:26,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:03:26,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:03:26,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:03:26,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:03:26,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:03:26,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:03:26,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:03:26,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:03:26,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:03:26,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:03:26,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:03:26,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:03:26,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:03:26,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:03:26,907 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:03:27,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:03:27,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:03:27,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:03:27,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:03:27,204 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:03:27,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2020-08-22 02:03:27,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9e1aa71/867c6900afad473ebc5b79f2e2e2d097/FLAGceb04e402 [2020-08-22 02:03:27,809 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:03:27,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2020-08-22 02:03:27,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9e1aa71/867c6900afad473ebc5b79f2e2e2d097/FLAGceb04e402 [2020-08-22 02:03:28,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9e1aa71/867c6900afad473ebc5b79f2e2e2d097 [2020-08-22 02:03:28,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:03:28,140 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:03:28,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:03:28,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:03:28,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:03:28,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87441be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28, skipping insertion in model container [2020-08-22 02:03:28,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:03:28,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:03:28,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:03:28,685 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:03:28,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:03:28,828 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:03:28,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28 WrapperNode [2020-08-22 02:03:28,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:03:28,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:03:28,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:03:28,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:03:28,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (1/1) ... [2020-08-22 02:03:28,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:03:28,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:03:28,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:03:28,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:03:28,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (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 02:03:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:03:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:03:28,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:03:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:03:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:03:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:03:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:03:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-22 02:03:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:03:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:03:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:03:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:03:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:03:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:03:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:03:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:03:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:03:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:03:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:03:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:03:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:03:28,994 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:03:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:03:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:03:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:03:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:03:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:03:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:03:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:03:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:03:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:03:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:03:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:03:28,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:03:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:03:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:03:28,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:03:28,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:03:28,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:03:28,997 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:03:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:03:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:03:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:03:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:03:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:03:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:03:28,998 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:03:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:03:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:03:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:03:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:03:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:03:28,999 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:03:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:03:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:03:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:03:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:03:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:03:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-22 02:03:29,000 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:03:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:03:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:03:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:03:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:03:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:03:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:03:29,001 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:03:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:03:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:03:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:03:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:03:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:03:29,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:03:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:03:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:03:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:03:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:03:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:03:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:03:29,003 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:03:29,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:03:29,004 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:03:29,004 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:03:29,004 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:03:29,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:03:29,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:03:29,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:03:29,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:03:30,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:03:30,123 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:03:30,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:03:30 BoogieIcfgContainer [2020-08-22 02:03:30,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:03:30,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:03:30,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:03:30,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:03:30,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:03:28" (1/3) ... [2020-08-22 02:03:30,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2956b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:03:30, skipping insertion in model container [2020-08-22 02:03:30,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:03:28" (2/3) ... [2020-08-22 02:03:30,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2956b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:03:30, skipping insertion in model container [2020-08-22 02:03:30,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:03:30" (3/3) ... [2020-08-22 02:03:30,137 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product12.cil.c [2020-08-22 02:03:30,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:03:30,155 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:03:30,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:03:30,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:03:30,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:03:30,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:03:30,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:03:30,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:03:30,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:03:30,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:03:30,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:03:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-08-22 02:03:30,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:03:30,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:30,223 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 02:03:30,224 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1715921214, now seen corresponding path program 1 times [2020-08-22 02:03:30,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:30,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122159510] [2020-08-22 02:03:30,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:30,942 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:03:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:30,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:30,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:31,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:31,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:03:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:03:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:03:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:31,036 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 02:03:31,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122159510] [2020-08-22 02:03:31,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:31,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:03:31,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143225989] [2020-08-22 02:03:31,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:03:31,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:31,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:03:31,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:03:31,074 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 3 states. [2020-08-22 02:03:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:32,077 INFO L93 Difference]: Finished difference Result 240 states and 317 transitions. [2020-08-22 02:03:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:03:32,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 02:03:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:32,093 INFO L225 Difference]: With dead ends: 240 [2020-08-22 02:03:32,093 INFO L226 Difference]: Without dead ends: 131 [2020-08-22 02:03:32,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:03:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-22 02:03:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2020-08-22 02:03:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 02:03:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-22 02:03:32,180 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 52 [2020-08-22 02:03:32,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:32,180 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-22 02:03:32,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:03:32,181 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-22 02:03:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 02:03:32,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:32,184 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 02:03:32,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:03:32,185 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:32,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1789709038, now seen corresponding path program 1 times [2020-08-22 02:03:32,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:32,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62701395] [2020-08-22 02:03:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,497 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:03:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:03:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:03:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:03:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:32,562 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 02:03:32,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62701395] [2020-08-22 02:03:32,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:32,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:03:32,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48678012] [2020-08-22 02:03:32,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:03:32,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:32,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:03:32,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:03:32,566 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 4 states. [2020-08-22 02:03:33,025 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:33,609 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2020-08-22 02:03:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:03:33,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 02:03:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:33,612 INFO L225 Difference]: With dead ends: 160 [2020-08-22 02:03:33,612 INFO L226 Difference]: Without dead ends: 115 [2020-08-22 02:03:33,614 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 02:03:33,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-22 02:03:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2020-08-22 02:03:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-22 02:03:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-22 02:03:33,649 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 53 [2020-08-22 02:03:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:33,650 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-22 02:03:33,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:03:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-22 02:03:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 02:03:33,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:33,653 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 02:03:33,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:03:33,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:33,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1277285199, now seen corresponding path program 1 times [2020-08-22 02:03:33,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:33,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448565446] [2020-08-22 02:03:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:33,963 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:03:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:34,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:34,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:34,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:34,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:03:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:34,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:03:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:03:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:34,062 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 02:03:34,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448565446] [2020-08-22 02:03:34,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:34,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:03:34,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722026685] [2020-08-22 02:03:34,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:03:34,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:34,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:03:34,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:03:34,069 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 8 states. [2020-08-22 02:03:34,451 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:03:34,725 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:03:34,998 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:03:35,229 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:03:35,942 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:03:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:37,067 INFO L93 Difference]: Finished difference Result 326 states and 401 transitions. [2020-08-22 02:03:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:03:37,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 02:03:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:37,073 INFO L225 Difference]: With dead ends: 326 [2020-08-22 02:03:37,073 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 02:03:37,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:03:37,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 02:03:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 190. [2020-08-22 02:03:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-22 02:03:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2020-08-22 02:03:37,169 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 58 [2020-08-22 02:03:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:37,170 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2020-08-22 02:03:37,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:03:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2020-08-22 02:03:37,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 02:03:37,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:37,178 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 02:03:37,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:03:37,179 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:37,179 INFO L82 PathProgramCache]: Analyzing trace with hash 2002784121, now seen corresponding path program 1 times [2020-08-22 02:03:37,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:37,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944129973] [2020-08-22 02:03:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,533 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:03:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:03:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:03:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:03:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:03:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:37,594 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 02:03:37,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944129973] [2020-08-22 02:03:37,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:37,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 02:03:37,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331904293] [2020-08-22 02:03:37,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:03:37,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:37,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:03:37,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:03:37,596 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand 7 states. [2020-08-22 02:03:37,942 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:03:38,921 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:03:39,194 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:03:39,441 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:03:39,672 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:03:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:39,933 INFO L93 Difference]: Finished difference Result 537 states and 682 transitions. [2020-08-22 02:03:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 02:03:39,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-22 02:03:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:39,939 INFO L225 Difference]: With dead ends: 537 [2020-08-22 02:03:39,940 INFO L226 Difference]: Without dead ends: 371 [2020-08-22 02:03:39,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:03:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-22 02:03:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 349. [2020-08-22 02:03:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-08-22 02:03:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 425 transitions. [2020-08-22 02:03:40,024 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 425 transitions. Word has length 61 [2020-08-22 02:03:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:40,024 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 425 transitions. [2020-08-22 02:03:40,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:03:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 425 transitions. [2020-08-22 02:03:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 02:03:40,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:40,027 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 02:03:40,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:03:40,027 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:40,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1296160083, now seen corresponding path program 1 times [2020-08-22 02:03:40,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:40,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916819217] [2020-08-22 02:03:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,296 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:03:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:03:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:03:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:03:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:03:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:03:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:03:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:03:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:03:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:03:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 02:03:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:03:40,380 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 02:03:40,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916819217] [2020-08-22 02:03:40,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:03:40,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:03:40,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066017132] [2020-08-22 02:03:40,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:03:40,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:03:40,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:03:40,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:03:40,390 INFO L87 Difference]: Start difference. First operand 349 states and 425 transitions. Second operand 5 states. [2020-08-22 02:03:40,656 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:03:41,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:03:41,203 INFO L93 Difference]: Finished difference Result 642 states and 802 transitions. [2020-08-22 02:03:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 02:03:41,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-08-22 02:03:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:03:41,207 INFO L225 Difference]: With dead ends: 642 [2020-08-22 02:03:41,207 INFO L226 Difference]: Without dead ends: 317 [2020-08-22 02:03:41,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 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 02:03:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-22 02:03:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2020-08-22 02:03:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-22 02:03:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 354 transitions. [2020-08-22 02:03:41,269 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 354 transitions. Word has length 65 [2020-08-22 02:03:41,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:03:41,270 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 354 transitions. [2020-08-22 02:03:41,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:03:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 354 transitions. [2020-08-22 02:03:41,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 02:03:41,272 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:03:41,272 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 02:03:41,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:03:41,272 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:03:41,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:03:41,273 INFO L82 PathProgramCache]: Analyzing trace with hash -423236225, now seen corresponding path program 1 times [2020-08-22 02:03:41,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:03:41,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584434650] [2020-08-22 02:03:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:03:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:03:41,335 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:03:41,335 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:03:41,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:03:41,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:03:41 BoogieIcfgContainer [2020-08-22 02:03:41,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:03:41,363 INFO L168 Benchmark]: Toolchain (without parser) took 13223.25 ms. Allocated memory was 141.0 MB in the beginning and 437.3 MB in the end (delta: 296.2 MB). Free memory was 101.2 MB in the beginning and 113.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 283.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:03:41,364 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:03:41,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.65 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 101.0 MB in the beginning and 174.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:03:41,365 INFO L168 Benchmark]: Boogie Preprocessor took 89.66 ms. Allocated memory is still 206.0 MB. Free memory was 174.9 MB in the beginning and 171.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:03:41,366 INFO L168 Benchmark]: RCFGBuilder took 1208.91 ms. Allocated memory was 206.0 MB in the beginning and 234.9 MB in the end (delta: 28.8 MB). Free memory was 171.0 MB in the beginning and 199.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:03:41,367 INFO L168 Benchmark]: TraceAbstraction took 11231.26 ms. Allocated memory was 234.9 MB in the beginning and 437.3 MB in the end (delta: 202.4 MB). Free memory was 197.7 MB in the beginning and 113.9 MB in the end (delta: 83.8 MB). Peak memory consumption was 286.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:03:41,370 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 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.65 ms. Allocated memory was 141.0 MB in the beginning and 206.0 MB in the end (delta: 65.0 MB). Free memory was 101.0 MB in the beginning and 174.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.66 ms. Allocated memory is still 206.0 MB. Free memory was 174.9 MB in the beginning and 171.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1208.91 ms. Allocated memory was 206.0 MB in the beginning and 234.9 MB in the end (delta: 28.8 MB). Free memory was 171.0 MB in the beginning and 199.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11231.26 ms. Allocated memory was 234.9 MB in the beginning and 437.3 MB in the end (delta: 202.4 MB). Free memory was 197.7 MB in the beginning and 113.9 MB in the end (delta: 83.8 MB). Peak memory consumption was 286.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 890]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L306] int waterLevel = 1; [L307] int methaneLevelCritical = 0; [L593] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L790] int cleanupTimeShifts = 4; [L863] int retValue_acc ; [L864] int tmp ; [L868] FCALL select_helpers() [L869] FCALL select_features() [L870] CALL, EXPR valid_product() [L415] int retValue_acc ; [L418] retValue_acc = 1 [L419] return (retValue_acc); [L870] RET, EXPR valid_product() [L870] tmp = valid_product() [L872] COND TRUE \read(tmp) [L874] FCALL setup() [L875] CALL runTest() [L857] CALL test() [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 [L94] COND TRUE 1 [L96] COND TRUE splverifierCounter < 4 [L102] tmp = __VERIFIER_nondet_int() [L104] COND TRUE \read(tmp) [L106] CALL waterRise() [L324] COND TRUE waterLevel < 2 [L325] waterLevel = waterLevel + 1 [L106] RET waterRise() [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND FALSE !(\read(tmp___2)) [L130] tmp___1 = __VERIFIER_nondet_int() [L132] COND FALSE !(\read(tmp___1)) [L141] CALL timeShift() [L165] COND FALSE !(\read(pumpRunning)) [L172] COND TRUE \read(systemActive) [L174] FCALL processEnvironment() [L180] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L345] int retValue_acc ; [L348] retValue_acc = methaneLevelCritical [L349] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L377] int retValue_acc ; [L380] retValue_acc = waterLevel [L381] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L890] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 214 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 644 SDslu, 342 SDs, 0 SdLazy, 1355 SolverSat, 382 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 160 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s 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...