/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:36:06,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:36:06,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:36:06,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:36:06,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:36:06,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:36:06,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:36:06,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:36:06,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:36:06,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:36:06,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:36:06,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:36:06,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:36:06,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:36:06,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:36:06,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:36:06,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:36:06,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:36:06,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:36:06,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:36:06,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:36:06,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:36:06,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:36:06,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:36:06,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:36:06,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:36:06,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:36:06,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:36:06,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:36:06,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:36:06,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:36:06,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:36:06,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:36:06,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:36:06,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:36:06,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:36:06,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:36:06,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:36:06,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:36:06,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:36:06,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:36:06,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:36:06,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:36:06,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:36:06,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:36:06,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:36:06,848 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:36:06,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:36:06,850 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:36:06,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:36:06,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:36:06,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:36:06,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:36:06,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:36:06,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:36:06,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:36:06,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:36:06,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:36:06,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:36:06,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:36:06,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:36:06,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:36:06,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:36:06,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:36:06,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:36:06,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:36:06,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:36:06,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:36:06,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:36:06,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:36:06,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:36:06,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:36:07,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:36:07,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:36:07,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:36:07,170 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:36:07,170 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:36:07,171 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c [2020-08-19 02:36:07,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34121edb7/238645fb198a47bba4ff422c36005a20/FLAG4067f502d [2020-08-19 02:36:07,785 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:36:07,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c [2020-08-19 02:36:07,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34121edb7/238645fb198a47bba4ff422c36005a20/FLAG4067f502d [2020-08-19 02:36:08,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34121edb7/238645fb198a47bba4ff422c36005a20 [2020-08-19 02:36:08,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:36:08,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:36:08,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:36:08,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:36:08,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:36:08,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c71f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08, skipping insertion in model container [2020-08-19 02:36:08,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:36:08,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:36:08,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:36:08,646 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:36:08,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:36:08,809 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:36:08,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08 WrapperNode [2020-08-19 02:36:08,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:36:08,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:36:08,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:36:08,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:36:08,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (1/1) ... [2020-08-19 02:36:08,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:36:08,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:36:08,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:36:08,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:36:08,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:36:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:36:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:36:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:36:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:36:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:36:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:36:08,985 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:36:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:36:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:36:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:36:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 02:36:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:36:08,986 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:36:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:36:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:36:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:36:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:36:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:36:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:36:08,987 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:36:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:36:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:36:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:36:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:36:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:36:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:36:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:36:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:36:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:36:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:36:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:36:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:36:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:36:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 02:36:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:36:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:36:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:36:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:36:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:36:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:36:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:36:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:36:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:36:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:36:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:36:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:36:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:36:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:36:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:36:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:36:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:36:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:36:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:36:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:36:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:36:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:36:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:36:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:36:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 02:36:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:36:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:36:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:36:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 02:36:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:36:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:36:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:36:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:36:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:36:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:36:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:36:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:36:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:36:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:36:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:36:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:36:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:36:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:36:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:36:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:36:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:36:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:36:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:36:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:36:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:36:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:36:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:36:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:36:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:36:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:36:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:36:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:36:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:36:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:36:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:36:10,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:36:10,228 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:36:10,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:36:10 BoogieIcfgContainer [2020-08-19 02:36:10,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:36:10,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:36:10,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:36:10,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:36:10,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:36:08" (1/3) ... [2020-08-19 02:36:10,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54015e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:36:10, skipping insertion in model container [2020-08-19 02:36:10,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:08" (2/3) ... [2020-08-19 02:36:10,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54015e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:36:10, skipping insertion in model container [2020-08-19 02:36:10,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:36:10" (3/3) ... [2020-08-19 02:36:10,242 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product28.cil.c [2020-08-19 02:36:10,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:36:10,261 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:36:10,274 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:36:10,300 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:36:10,300 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:36:10,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:36:10,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:36:10,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:36:10,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:36:10,301 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:36:10,302 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:36:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-19 02:36:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:36:10,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:10,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:36:10,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:10,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:10,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1443511359, now seen corresponding path program 1 times [2020-08-19 02:36:10,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:10,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757087729] [2020-08-19 02:36:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:10,971 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:36:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:11,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:36:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:36:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:11,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:36:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:36:11,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757087729] [2020-08-19 02:36:11,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:11,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:36:11,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179317435] [2020-08-19 02:36:11,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:36:11,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:11,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:36:11,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:36:11,126 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-19 02:36:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:12,222 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-08-19 02:36:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:36:12,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 02:36:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:12,240 INFO L225 Difference]: With dead ends: 282 [2020-08-19 02:36:12,240 INFO L226 Difference]: Without dead ends: 153 [2020-08-19 02:36:12,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:36:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-19 02:36:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-08-19 02:36:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 02:36:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-19 02:36:12,372 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-08-19 02:36:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:12,373 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-19 02:36:12,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:36:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-19 02:36:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 02:36:12,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:12,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:36:12,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:36:12,389 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash 880615085, now seen corresponding path program 1 times [2020-08-19 02:36:12,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:12,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114187719] [2020-08-19 02:36:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,798 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:36:12,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:36:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:36:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:36:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:36:12,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114187719] [2020-08-19 02:36:12,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:12,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:36:12,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645078318] [2020-08-19 02:36:12,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:36:12,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:12,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:36:12,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:36:12,854 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-08-19 02:36:13,287 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:36:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:14,058 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-08-19 02:36:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:36:14,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 02:36:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:14,067 INFO L225 Difference]: With dead ends: 205 [2020-08-19 02:36:14,067 INFO L226 Difference]: Without dead ends: 137 [2020-08-19 02:36:14,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:36:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-19 02:36:14,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-08-19 02:36:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 02:36:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-08-19 02:36:14,108 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-08-19 02:36:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:14,108 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-08-19 02:36:14,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:36:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-08-19 02:36:14,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 02:36:14,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:14,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:36:14,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:36:14,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:14,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:14,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1617309652, now seen corresponding path program 1 times [2020-08-19 02:36:14,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:14,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435250683] [2020-08-19 02:36:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,450 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:36:14,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:36:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:36:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:36:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:36:14,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435250683] [2020-08-19 02:36:14,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:14,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:36:14,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075033201] [2020-08-19 02:36:14,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:36:14,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:14,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:36:14,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:36:14,571 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-08-19 02:36:14,951 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:15,259 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:15,562 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:15,802 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:16,576 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:36:18,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:18,228 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2020-08-19 02:36:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:36:18,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 02:36:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:18,239 INFO L225 Difference]: With dead ends: 390 [2020-08-19 02:36:18,240 INFO L226 Difference]: Without dead ends: 303 [2020-08-19 02:36:18,246 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 [2020-08-19 02:36:18,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-19 02:36:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-08-19 02:36:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 02:36:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-08-19 02:36:18,327 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 58 [2020-08-19 02:36:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:18,328 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-08-19 02:36:18,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:36:18,328 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-08-19 02:36:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 02:36:18,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:18,331 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] [2020-08-19 02:36:18,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:36:18,331 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:18,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:18,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1904985657, now seen corresponding path program 1 times [2020-08-19 02:36:18,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:18,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431389823] [2020-08-19 02:36:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,704 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:36:18,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:36:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:36:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:36:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:36:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:36:18,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431389823] [2020-08-19 02:36:18,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:18,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:36:18,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789224964] [2020-08-19 02:36:18,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:36:18,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:18,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:36:18,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:36:18,821 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 8 states. [2020-08-19 02:36:19,253 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:20,594 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:20,945 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:21,203 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:21,459 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:22,070 INFO L93 Difference]: Finished difference Result 741 states and 971 transitions. [2020-08-19 02:36:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:36:22,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 02:36:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:22,077 INFO L225 Difference]: With dead ends: 741 [2020-08-19 02:36:22,077 INFO L226 Difference]: Without dead ends: 523 [2020-08-19 02:36:22,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:36:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-19 02:36:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2020-08-19 02:36:22,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-19 02:36:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 563 transitions. [2020-08-19 02:36:22,190 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 563 transitions. Word has length 63 [2020-08-19 02:36:22,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:22,191 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 563 transitions. [2020-08-19 02:36:22,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:36:22,191 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 563 transitions. [2020-08-19 02:36:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 02:36:22,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:22,195 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] [2020-08-19 02:36:22,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:36:22,195 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:22,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:22,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1824895917, now seen corresponding path program 1 times [2020-08-19 02:36:22,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:22,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550598470] [2020-08-19 02:36:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,441 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:36:22,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:36:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:36:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:36:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:36:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:36:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:36:22,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550598470] [2020-08-19 02:36:22,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:22,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:36:22,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934366859] [2020-08-19 02:36:22,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:36:22,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:22,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:36:22,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:36:22,540 INFO L87 Difference]: Start difference. First operand 457 states and 563 transitions. Second operand 6 states. [2020-08-19 02:36:22,839 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:23,624 INFO L93 Difference]: Finished difference Result 806 states and 1047 transitions. [2020-08-19 02:36:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:36:23,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-19 02:36:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:23,632 INFO L225 Difference]: With dead ends: 806 [2020-08-19 02:36:23,632 INFO L226 Difference]: Without dead ends: 373 [2020-08-19 02:36:23,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:36:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-08-19 02:36:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-08-19 02:36:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-19 02:36:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-08-19 02:36:23,700 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-08-19 02:36:23,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:23,701 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-08-19 02:36:23,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:36:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-08-19 02:36:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 02:36:23,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:23,703 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] [2020-08-19 02:36:23,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:36:23,703 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:23,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:23,704 INFO L82 PathProgramCache]: Analyzing trace with hash 2047531853, now seen corresponding path program 1 times [2020-08-19 02:36:23,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:23,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794660244] [2020-08-19 02:36:23,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:36:23,773 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:36:23,773 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:36:23,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:36:23,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:36:23 BoogieIcfgContainer [2020-08-19 02:36:23,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:36:23,801 INFO L168 Benchmark]: Toolchain (without parser) took 15693.31 ms. Allocated memory was 140.5 MB in the beginning and 479.2 MB in the end (delta: 338.7 MB). Free memory was 102.8 MB in the beginning and 361.9 MB in the end (delta: -259.2 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:23,802 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:36:23,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.37 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 172.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:23,804 INFO L168 Benchmark]: Boogie Preprocessor took 106.40 ms. Allocated memory is still 203.9 MB. Free memory was 172.5 MB in the beginning and 167.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:23,805 INFO L168 Benchmark]: RCFGBuilder took 1316.26 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 167.8 MB in the beginning and 195.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:23,806 INFO L168 Benchmark]: TraceAbstraction took 13564.66 ms. Allocated memory was 235.9 MB in the beginning and 479.2 MB in the end (delta: 243.3 MB). Free memory was 195.5 MB in the beginning and 361.9 MB in the end (delta: -166.4 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:23,809 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.37 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 172.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.40 ms. Allocated memory is still 203.9 MB. Free memory was 172.5 MB in the beginning and 167.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1316.26 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 167.8 MB in the beginning and 195.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13564.66 ms. Allocated memory was 235.9 MB in the beginning and 479.2 MB in the end (delta: 243.3 MB). Free memory was 195.5 MB in the beginning and 361.9 MB in the end (delta: -166.4 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L89] int pumpRunning = 0; [L90] int systemActive = 1; [L356] int waterLevel = 1; [L357] int methaneLevelCritical = 0; [L445] int cleanupTimeShifts = 4; [L753] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L518] int retValue_acc ; [L519] int tmp ; [L523] FCALL select_helpers() [L524] FCALL select_features() [L525] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L525] RET, EXPR valid_product() [L525] tmp = valid_product() [L527] COND TRUE \read(tmp) [L529] FCALL setup() [L530] CALL runTest() [L512] CALL test() [L287] int splverifierCounter ; [L288] int tmp ; [L289] int tmp___0 ; [L290] int tmp___1 ; [L291] int tmp___2 ; [L294] splverifierCounter = 0 [L296] COND TRUE 1 [L298] COND TRUE splverifierCounter < 4 [L304] tmp = __VERIFIER_nondet_int() [L306] COND TRUE \read(tmp) [L308] CALL waterRise() [L374] COND TRUE waterLevel < 2 [L375] waterLevel = waterLevel + 1 [L308] RET waterRise() [L314] tmp___0 = __VERIFIER_nondet_int() [L316] COND FALSE !(\read(tmp___0)) [L324] tmp___2 = __VERIFIER_nondet_int() [L326] COND FALSE !(\read(tmp___2)) [L332] tmp___1 = __VERIFIER_nondet_int() [L334] COND TRUE \read(tmp___1) [L336] CALL stopSystem() [L263] COND FALSE !(\read(pumpRunning)) [L270] systemActive = 0 [L336] RET stopSystem() [L343] CALL timeShift() [L97] COND FALSE !(\read(pumpRunning)) [L104] COND FALSE !(\read(systemActive)) [L112] CALL __utac_acc__Specification3_spec__1() [L551] int tmp ; [L552] int tmp___0 ; [L553] int tmp___1 ; [L557] CALL, EXPR isMethaneLevelCritical() [L395] int retValue_acc ; [L398] retValue_acc = methaneLevelCritical [L399] return (retValue_acc); [L557] RET, EXPR isMethaneLevelCritical() [L557] tmp = isMethaneLevelCritical() [L559] COND FALSE !(\read(tmp)) [L563] CALL, EXPR getWaterLevel() [L427] int retValue_acc ; [L430] retValue_acc = waterLevel [L431] return (retValue_acc); [L563] RET, EXPR getWaterLevel() [L563] tmp___0 = getWaterLevel() [L565] COND TRUE tmp___0 == 2 [L567] CALL, EXPR isPumpRunning() [L196] int retValue_acc ; [L199] retValue_acc = pumpRunning [L200] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___1 = isPumpRunning() [L569] COND FALSE !(\read(tmp___1)) [L573] CALL __automaton_fail() [L545] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 833 SDslu, 413 SDs, 0 SdLazy, 1915 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 236 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 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...