/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=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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:37:56,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:37:56,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:37:56,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:37:56,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:37:56,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:37:56,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:37:56,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:37:56,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:37:56,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:37:56,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:37:56,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:37:56,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:37:56,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:37:56,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:37:56,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:37:56,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:37:56,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:37:56,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:37:56,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:37:56,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:37:56,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:37:56,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:37:56,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:37:56,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:37:56,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:37:56,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:37:56,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:37:56,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:37:56,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:37:56,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:37:56,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:37:56,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:37:56,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:37:56,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:37:56,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:37:56,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:37:56,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:37:56,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:37:56,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:37:56,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:37:56,763 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 [2020-08-21 23:37:56,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:37:56,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:37:56,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:37:56,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:37:56,802 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:37:56,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:37:56,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:37:56,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:37:56,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:37:56,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:37:56,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:37:56,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:37:56,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:37:56,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:37:56,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:37:56,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:37:56,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:37:56,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:37:56,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:37:56,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:37:56,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:37:56,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:37:56,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:37:56,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:37:56,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:37:56,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:37:56,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:37:56,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:37:56,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:37:56,808 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=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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:37:57,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:37:57,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:37:57,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:37:57,149 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:37:57,150 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:37:57,150 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-08-21 23:37:57,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a8b3d56/7700cbbd2ee14d6daee7a001e6a2e81b/FLAG0aae6526e [2020-08-21 23:37:57,714 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:37:57,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-08-21 23:37:57,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a8b3d56/7700cbbd2ee14d6daee7a001e6a2e81b/FLAG0aae6526e [2020-08-21 23:37:58,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03a8b3d56/7700cbbd2ee14d6daee7a001e6a2e81b [2020-08-21 23:37:58,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:37:58,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:37:58,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:58,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:37:58,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:37:58,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58, skipping insertion in model container [2020-08-21 23:37:58,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:37:58,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:37:58,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:58,670 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:37:58,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:58,791 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:37:58,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58 WrapperNode [2020-08-21 23:37:58,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:58,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:37:58,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:37:58,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:37:58,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (1/1) ... [2020-08-21 23:37:58,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:37:58,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:37:58,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:37:58,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:37:58,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (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 [2020-08-21 23:37:58,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:37:58,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:37:58,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:58,979 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:37:58,979 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:37:58,979 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:37:58,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:37:58,979 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:37:58,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:37:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:37:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 23:37:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:37:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:37:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:37:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:37:58,982 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:37:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:37:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:37:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:37:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:37:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:37:58,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:37:58,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 23:37:58,984 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 23:37:58,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:58,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:37:58,985 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:37:58,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:37:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:37:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:37:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:37:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:37:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:37:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:37:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:37:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:37:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:37:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:37:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:37:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:37:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:37:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:37:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:37:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:37:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:37:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:37:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:37:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:37:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 23:37:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:37:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 23:37:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:37:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:37:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:37:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:37:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:37:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:37:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:37:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:37:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:37:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:37:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:37:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 23:37:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:37:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:37:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:37:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:37:58,994 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:37:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:37:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:37:58,995 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:37:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:37:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:37:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:37:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:37:58,996 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:37:58,997 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:58,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:37:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:37:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:37:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:37:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:37:58,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:37:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:37:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:37:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:37:58,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:37:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:37:59,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:38:00,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:38:00,241 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:38:00,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:38:00 BoogieIcfgContainer [2020-08-21 23:38:00,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:38:00,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:38:00,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:38:00,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:38:00,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:37:58" (1/3) ... [2020-08-21 23:38:00,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238b79d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:38:00, skipping insertion in model container [2020-08-21 23:38:00,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:58" (2/3) ... [2020-08-21 23:38:00,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238b79d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:38:00, skipping insertion in model container [2020-08-21 23:38:00,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:38:00" (3/3) ... [2020-08-21 23:38:00,260 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2020-08-21 23:38:00,271 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:38:00,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:38:00,297 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:38:00,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:38:00,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:38:00,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:38:00,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:38:00,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:38:00,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:38:00,330 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:38:00,331 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:38:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-21 23:38:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:38:00,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:00,375 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] [2020-08-21 23:38:00,375 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:00,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:00,382 INFO L82 PathProgramCache]: Analyzing trace with hash 640895003, now seen corresponding path program 1 times [2020-08-21 23:38:00,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:00,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470757746] [2020-08-21 23:38:00,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,095 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:01,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:38:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:38:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:38:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:01,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470757746] [2020-08-21 23:38:01,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:01,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:38:01,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842223541] [2020-08-21 23:38:01,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:38:01,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:01,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:38:01,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:38:01,261 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-21 23:38:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:02,522 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-21 23:38:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:38:02,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 23:38:02,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:02,539 INFO L225 Difference]: With dead ends: 323 [2020-08-21 23:38:02,539 INFO L226 Difference]: Without dead ends: 174 [2020-08-21 23:38:02,544 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 [2020-08-21 23:38:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-21 23:38:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-21 23:38:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-21 23:38:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-21 23:38:02,653 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 52 [2020-08-21 23:38:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:02,654 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-21 23:38:02,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:38:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-21 23:38:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 23:38:02,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:02,658 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] [2020-08-21 23:38:02,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:38:02,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash -61253498, now seen corresponding path program 1 times [2020-08-21 23:38:02,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:02,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997992624] [2020-08-21 23:38:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:02,968 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:38:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:38:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:38:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:03,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997992624] [2020-08-21 23:38:03,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:03,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:38:03,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279376417] [2020-08-21 23:38:03,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:38:03,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:03,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:38:03,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:38:03,018 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 4 states. [2020-08-21 23:38:03,467 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:04,362 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-21 23:38:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:38:04,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 23:38:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:04,367 INFO L225 Difference]: With dead ends: 250 [2020-08-21 23:38:04,367 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 23:38:04,369 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 [2020-08-21 23:38:04,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 23:38:04,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-21 23:38:04,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 23:38:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-08-21 23:38:04,416 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 53 [2020-08-21 23:38:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:04,417 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-08-21 23:38:04,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:38:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-08-21 23:38:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 23:38:04,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:04,420 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] [2020-08-21 23:38:04,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:38:04,420 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:04,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2048791527, now seen corresponding path program 1 times [2020-08-21 23:38:04,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:04,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235722561] [2020-08-21 23:38:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,809 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:04,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:38:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:38:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:38:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:04,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235722561] [2020-08-21 23:38:04,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:04,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:38:04,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486172409] [2020-08-21 23:38:04,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:38:04,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:04,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:38:04,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:38:04,891 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 8 states. [2020-08-21 23:38:05,307 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:05,614 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:05,869 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:06,122 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:06,808 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:38:08,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:08,683 INFO L93 Difference]: Finished difference Result 451 states and 558 transitions. [2020-08-21 23:38:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:38:08,684 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 23:38:08,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:08,688 INFO L225 Difference]: With dead ends: 451 [2020-08-21 23:38:08,688 INFO L226 Difference]: Without dead ends: 344 [2020-08-21 23:38:08,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:38:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-08-21 23:38:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 286. [2020-08-21 23:38:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-21 23:38:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 345 transitions. [2020-08-21 23:38:08,767 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 345 transitions. Word has length 57 [2020-08-21 23:38:08,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:08,768 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 345 transitions. [2020-08-21 23:38:08,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:38:08,768 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 345 transitions. [2020-08-21 23:38:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 23:38:08,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:08,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:08,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:38:08,772 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:08,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1441609457, now seen corresponding path program 1 times [2020-08-21 23:38:08,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:08,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124340247] [2020-08-21 23:38:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,064 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:38:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:38:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:38:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 23:38:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:09,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124340247] [2020-08-21 23:38:09,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:09,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:38:09,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009330029] [2020-08-21 23:38:09,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:38:09,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:09,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:38:09,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:38:09,143 INFO L87 Difference]: Start difference. First operand 286 states and 345 transitions. Second operand 8 states. [2020-08-21 23:38:09,544 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:10,979 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:11,357 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:11,607 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:38:11,825 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:12,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:12,537 INFO L93 Difference]: Finished difference Result 878 states and 1149 transitions. [2020-08-21 23:38:12,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:38:12,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 23:38:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:12,545 INFO L225 Difference]: With dead ends: 878 [2020-08-21 23:38:12,545 INFO L226 Difference]: Without dead ends: 616 [2020-08-21 23:38:12,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:38:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-08-21 23:38:12,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 549. [2020-08-21 23:38:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-08-21 23:38:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 675 transitions. [2020-08-21 23:38:12,698 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 675 transitions. Word has length 63 [2020-08-21 23:38:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:12,699 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 675 transitions. [2020-08-21 23:38:12,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:38:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 675 transitions. [2020-08-21 23:38:12,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 23:38:12,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:12,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:12,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:38:12,704 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:12,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:12,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1167704009, now seen corresponding path program 1 times [2020-08-21 23:38:12,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:12,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32929109] [2020-08-21 23:38:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:12,967 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:38:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:38:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:38:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:38:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:38:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:38:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:38:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:38:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:38:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 23:38:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 23:38:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:38:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:38:13,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32929109] [2020-08-21 23:38:13,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:38:13,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:38:13,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852442077] [2020-08-21 23:38:13,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:38:13,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:38:13,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:38:13,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:38:13,080 INFO L87 Difference]: Start difference. First operand 549 states and 675 transitions. Second operand 6 states. [2020-08-21 23:38:13,404 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:38:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:38:14,972 INFO L93 Difference]: Finished difference Result 1300 states and 1694 transitions. [2020-08-21 23:38:14,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:38:14,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 23:38:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:38:14,980 INFO L225 Difference]: With dead ends: 1300 [2020-08-21 23:38:14,980 INFO L226 Difference]: Without dead ends: 775 [2020-08-21 23:38:14,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:38:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-08-21 23:38:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 705. [2020-08-21 23:38:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-08-21 23:38:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 860 transitions. [2020-08-21 23:38:15,130 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 860 transitions. Word has length 67 [2020-08-21 23:38:15,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:38:15,130 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 860 transitions. [2020-08-21 23:38:15,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:38:15,131 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 860 transitions. [2020-08-21 23:38:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 23:38:15,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:38:15,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:38:15,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:38:15,135 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:38:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:38:15,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1951258889, now seen corresponding path program 1 times [2020-08-21 23:38:15,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:38:15,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874238294] [2020-08-21 23:38:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:38:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:38:15,199 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:38:15,200 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:38:15,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:38:15,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:38:15 BoogieIcfgContainer [2020-08-21 23:38:15,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:38:15,228 INFO L168 Benchmark]: Toolchain (without parser) took 17191.15 ms. Allocated memory was 142.1 MB in the beginning and 499.6 MB in the end (delta: 357.6 MB). Free memory was 104.7 MB in the beginning and 132.7 MB in the end (delta: -28.0 MB). Peak memory consumption was 329.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:15,228 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 23:38:15,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.71 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 104.5 MB in the beginning and 172.2 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:15,230 INFO L168 Benchmark]: Boogie Preprocessor took 105.90 ms. Allocated memory is still 204.5 MB. Free memory was 172.2 MB in the beginning and 168.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:15,231 INFO L168 Benchmark]: RCFGBuilder took 1349.75 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 168.2 MB in the beginning and 187.5 MB in the end (delta: -19.2 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:15,232 INFO L168 Benchmark]: TraceAbstraction took 14974.71 ms. Allocated memory was 232.8 MB in the beginning and 499.6 MB in the end (delta: 266.9 MB). Free memory was 187.5 MB in the beginning and 132.7 MB in the end (delta: 54.8 MB). Peak memory consumption was 321.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:38:15,235 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 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.71 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 104.5 MB in the beginning and 172.2 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.90 ms. Allocated memory is still 204.5 MB. Free memory was 172.2 MB in the beginning and 168.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1349.75 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 168.2 MB in the beginning and 187.5 MB in the end (delta: -19.2 MB). Peak memory consumption was 78.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14974.71 ms. Allocated memory was 232.8 MB in the beginning and 499.6 MB in the end (delta: 266.9 MB). Free memory was 187.5 MB in the beginning and 132.7 MB in the end (delta: 54.8 MB). Peak memory consumption was 321.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 977]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L225] int pumpRunning = 0; [L226] int systemActive = 1; [L473] int cleanupTimeShifts = 4; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L549] int retValue_acc ; [L550] int tmp ; [L554] FCALL select_helpers() [L555] FCALL select_features() [L556] CALL, EXPR valid_product() [L598] int retValue_acc ; [L601] retValue_acc = 1 [L602] return (retValue_acc); [L556] RET, EXPR valid_product() [L556] tmp = valid_product() [L558] COND TRUE \read(tmp) [L560] FCALL setup() [L561] CALL runTest() [L540] CALL test() [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 [L164] COND TRUE 1 [L166] COND TRUE splverifierCounter < 4 [L172] tmp = __VERIFIER_nondet_int() [L174] COND TRUE \read(tmp) [L176] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L176] RET waterRise() [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___2)) [L198] tmp___1 = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp___1) [L202] CALL stopSystem() [L426] COND FALSE !(\read(pumpRunning)) [L433] systemActive = 0 [L202] RET stopSystem() [L209] CALL timeShift() [L233] COND FALSE !(\read(pumpRunning)) [L240] COND FALSE !(\read(systemActive)) [L248] CALL __utac_acc__Specification3_spec__1() [L440] int tmp ; [L441] int tmp___0 ; [L442] int tmp___1 ; [L446] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L446] RET, EXPR isMethaneLevelCritical() [L446] tmp = isMethaneLevelCritical() [L448] COND FALSE !(\read(tmp)) [L452] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L452] RET, EXPR getWaterLevel() [L452] tmp___0 = getWaterLevel() [L454] COND TRUE tmp___0 == 2 [L456] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L456] RET, EXPR isPumpRunning() [L456] tmp___1 = isPumpRunning() [L458] COND FALSE !(\read(tmp___1)) [L462] CALL __automaton_fail() [L977] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 244 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 637 SDtfs, 1471 SDslu, 407 SDs, 0 SdLazy, 2267 SolverSat, 929 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=705occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 256 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 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...