/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:22:43,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:22:43,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:22:43,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:22:43,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:22:43,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:22:43,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:22:43,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:22:43,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:22:43,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:22:43,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:22:43,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:22:43,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:22:43,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:22:43,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:22:43,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:22:43,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:22:43,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:22:43,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:22:43,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:22:43,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:22:43,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:22:43,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:22:43,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:22:43,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:22:43,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:22:43,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:22:43,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:22:43,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:22:43,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:22:43,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:22:43,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:22:43,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:22:43,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:22:43,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:22:43,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:22:43,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:22:43,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:22:43,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:22:43,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:22:43,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:22:43,814 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 [2020-08-18 10:22:43,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:22:43,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:22:43,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:22:43,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:22:43,837 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:22:43,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:22:43,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:22:43,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:22:43,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:22:43,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:22:43,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:22:43,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:22:43,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:22:43,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:22:43,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:22:43,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:22:43,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:22:43,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:22:43,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:22:43,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:22:43,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:22:43,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:22:43,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:22:43,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:22:43,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:22:43,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:22:43,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:22:43,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:22:43,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:22:43,842 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 -> false [2020-08-18 10:22:44,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:22:44,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:22:44,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:22:44,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:22:44,167 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:22:44,168 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-18 10:22:44,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65a95dd1/94838822fdc04e24ab33eb68bb977dbe/FLAG9b90dab86 [2020-08-18 10:22:44,787 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:22:44,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-18 10:22:44,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65a95dd1/94838822fdc04e24ab33eb68bb977dbe/FLAG9b90dab86 [2020-08-18 10:22:45,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65a95dd1/94838822fdc04e24ab33eb68bb977dbe [2020-08-18 10:22:45,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:22:45,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:22:45,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:22:45,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:22:45,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:22:45,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45, skipping insertion in model container [2020-08-18 10:22:45,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:22:45,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:22:45,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:22:45,573 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:22:45,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:22:45,713 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:22:45,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45 WrapperNode [2020-08-18 10:22:45,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:22:45,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:22:45,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:22:45,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:22:45,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (1/1) ... [2020-08-18 10:22:45,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:22:45,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:22:45,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:22:45,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:22:45,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (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 [2020-08-18 10:22:45,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:22:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:22:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:22:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:22:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:22:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:22:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:22:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:22:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 10:22:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:22:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:22:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:22:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:22:45,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:22:45,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:22:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:22:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:22:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:22:45,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:22:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:22:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:22:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:22:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:22:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:22:45,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:22:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:22:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:22:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:22:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:22:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:22:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:22:45,875 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:22:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:22:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:22:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:22:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:22:45,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:22:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:22:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:22:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:22:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:22:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:22:45,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:22:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:22:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:22:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:22:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:22:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:22:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:22:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:22:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:22:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:22:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:22:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:22:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:22:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:22:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:22:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:22:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:22:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:22:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:22:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:22:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:22:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:22:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:22:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:22:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:22:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:22:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 10:22:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:22:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:22:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:22:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:22:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:22:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:22:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:22:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:22:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:22:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:22:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:22:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:22:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:22:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:22:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:22:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:22:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:22:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:22:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:22:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:22:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:22:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:22:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:22:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:22:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:22:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:22:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:22:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:22:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:22:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:22:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:22:46,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:22:46,903 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:22:46,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:22:46 BoogieIcfgContainer [2020-08-18 10:22:46,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:22:46,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:22:46,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:22:46,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:22:46,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:22:45" (1/3) ... [2020-08-18 10:22:46,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f04e9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:22:46, skipping insertion in model container [2020-08-18 10:22:46,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:22:45" (2/3) ... [2020-08-18 10:22:46,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f04e9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:22:46, skipping insertion in model container [2020-08-18 10:22:46,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:22:46" (3/3) ... [2020-08-18 10:22:46,918 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2020-08-18 10:22:46,929 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:22:46,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:22:46,952 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:22:46,975 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:22:46,975 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:22:46,976 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:22:46,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:22:46,976 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:22:46,976 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:22:46,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:22:46,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:22:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-18 10:22:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:22:47,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:47,013 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] [2020-08-18 10:22:47,013 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:47,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1529441714, now seen corresponding path program 1 times [2020-08-18 10:22:47,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:47,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858323306] [2020-08-18 10:22:47,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,640 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:22:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:22:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:22:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:47,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858323306] [2020-08-18 10:22:47,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:47,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:22:47,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357067632] [2020-08-18 10:22:47,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:22:47,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:47,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:22:47,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:22:47,764 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-08-18 10:22:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:49,119 INFO L93 Difference]: Finished difference Result 358 states and 461 transitions. [2020-08-18 10:22:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:22:49,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 10:22:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:49,138 INFO L225 Difference]: With dead ends: 358 [2020-08-18 10:22:49,138 INFO L226 Difference]: Without dead ends: 193 [2020-08-18 10:22:49,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:22:49,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-18 10:22:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2020-08-18 10:22:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-18 10:22:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-18 10:22:49,285 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 52 [2020-08-18 10:22:49,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:49,286 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-18 10:22:49,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:22:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-18 10:22:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 10:22:49,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:49,298 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] [2020-08-18 10:22:49,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:22:49,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:49,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2080089166, now seen corresponding path program 1 times [2020-08-18 10:22:49,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:49,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732982129] [2020-08-18 10:22:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,649 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:49,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:22:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:22:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:22:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:49,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732982129] [2020-08-18 10:22:49,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:49,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:22:49,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880138245] [2020-08-18 10:22:49,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:22:49,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:22:49,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:22:49,703 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 4 states. [2020-08-18 10:22:50,137 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:51,066 INFO L93 Difference]: Finished difference Result 281 states and 340 transitions. [2020-08-18 10:22:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:22:51,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 10:22:51,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:51,072 INFO L225 Difference]: With dead ends: 281 [2020-08-18 10:22:51,073 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 10:22:51,075 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 [2020-08-18 10:22:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 10:22:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 147. [2020-08-18 10:22:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-18 10:22:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2020-08-18 10:22:51,119 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 53 [2020-08-18 10:22:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:51,119 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2020-08-18 10:22:51,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:22:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2020-08-18 10:22:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 10:22:51,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:51,122 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] [2020-08-18 10:22:51,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:22:51,122 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:51,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:51,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1856420908, now seen corresponding path program 1 times [2020-08-18 10:22:51,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:51,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233963178] [2020-08-18 10:22:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,415 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:22:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:22:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:22:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:51,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233963178] [2020-08-18 10:22:51,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:51,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:51,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173173535] [2020-08-18 10:22:51,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:51,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:51,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:51,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:51,570 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand 8 states. [2020-08-18 10:22:51,916 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:52,202 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:52,432 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:52,675 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:53,407 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:22:55,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:55,611 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2020-08-18 10:22:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:22:55,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 10:22:55,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:55,617 INFO L225 Difference]: With dead ends: 506 [2020-08-18 10:22:55,617 INFO L226 Difference]: Without dead ends: 383 [2020-08-18 10:22:55,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:22:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-18 10:22:55,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 314. [2020-08-18 10:22:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-08-18 10:22:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 377 transitions. [2020-08-18 10:22:55,697 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 377 transitions. Word has length 58 [2020-08-18 10:22:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:55,698 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 377 transitions. [2020-08-18 10:22:55,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 377 transitions. [2020-08-18 10:22:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 10:22:55,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:55,700 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] [2020-08-18 10:22:55,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:22:55,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:55,701 INFO L82 PathProgramCache]: Analyzing trace with hash 425111279, now seen corresponding path program 1 times [2020-08-18 10:22:55,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:55,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017633778] [2020-08-18 10:22:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:55,976 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:22:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:22:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:22:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:22:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:22:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:22:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:22:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:22:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:22:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 10:22:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:22:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:22:56,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017633778] [2020-08-18 10:22:56,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:22:56,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:22:56,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027952414] [2020-08-18 10:22:56,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:22:56,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:22:56,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:22:56,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:22:56,068 INFO L87 Difference]: Start difference. First operand 314 states and 377 transitions. Second operand 8 states. [2020-08-18 10:22:56,435 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:57,794 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:58,152 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:58,445 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:22:58,696 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:22:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:22:59,601 INFO L93 Difference]: Finished difference Result 973 states and 1259 transitions. [2020-08-18 10:22:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:22:59,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 10:22:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:22:59,610 INFO L225 Difference]: With dead ends: 973 [2020-08-18 10:22:59,611 INFO L226 Difference]: Without dead ends: 683 [2020-08-18 10:22:59,613 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 [2020-08-18 10:22:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-18 10:22:59,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 609. [2020-08-18 10:22:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-08-18 10:22:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 743 transitions. [2020-08-18 10:22:59,759 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 743 transitions. Word has length 63 [2020-08-18 10:22:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:22:59,760 INFO L479 AbstractCegarLoop]: Abstraction has 609 states and 743 transitions. [2020-08-18 10:22:59,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:22:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 743 transitions. [2020-08-18 10:22:59,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 10:22:59,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:22:59,763 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] [2020-08-18 10:22:59,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:22:59,764 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:22:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:22:59,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1458119221, now seen corresponding path program 1 times [2020-08-18 10:22:59,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:22:59,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605909379] [2020-08-18 10:22:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:22:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,024 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:23:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:23:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:23:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:23:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:23:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:23:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:23:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:23:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:23:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:23:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 10:23:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:23:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:23:00,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605909379] [2020-08-18 10:23:00,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:23:00,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:23:00,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614585239] [2020-08-18 10:23:00,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:23:00,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:23:00,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:23:00,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:23:00,104 INFO L87 Difference]: Start difference. First operand 609 states and 743 transitions. Second operand 6 states. [2020-08-18 10:23:00,451 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:23:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:23:02,631 INFO L93 Difference]: Finished difference Result 1435 states and 1848 transitions. [2020-08-18 10:23:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:23:02,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 10:23:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:23:02,640 INFO L225 Difference]: With dead ends: 1435 [2020-08-18 10:23:02,640 INFO L226 Difference]: Without dead ends: 850 [2020-08-18 10:23:02,642 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 [2020-08-18 10:23:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-18 10:23:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 777. [2020-08-18 10:23:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-08-18 10:23:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 940 transitions. [2020-08-18 10:23:02,777 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 940 transitions. Word has length 67 [2020-08-18 10:23:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:23:02,777 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 940 transitions. [2020-08-18 10:23:02,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:23:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 940 transitions. [2020-08-18 10:23:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 10:23:02,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:23:02,780 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] [2020-08-18 10:23:02,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:23:02,780 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:23:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:23:02,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1610113419, now seen corresponding path program 1 times [2020-08-18 10:23:02,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:23:02,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702796144] [2020-08-18 10:23:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:23:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:23:02,836 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:23:02,837 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:23:02,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:23:02,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:23:02 BoogieIcfgContainer [2020-08-18 10:23:02,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:23:02,865 INFO L168 Benchmark]: Toolchain (without parser) took 17800.82 ms. Allocated memory was 148.4 MB in the beginning and 499.6 MB in the end (delta: 351.3 MB). Free memory was 101.9 MB in the beginning and 217.6 MB in the end (delta: -115.8 MB). Peak memory consumption was 235.5 MB. Max. memory is 7.1 GB. [2020-08-18 10:23:02,866 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 10:23:02,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.94 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 101.7 MB in the beginning and 170.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:23:02,868 INFO L168 Benchmark]: Boogie Preprocessor took 90.97 ms. Allocated memory is still 203.9 MB. Free memory was 170.4 MB in the beginning and 166.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:23:02,869 INFO L168 Benchmark]: RCFGBuilder took 1102.91 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.9 MB in the beginning and 189.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:23:02,870 INFO L168 Benchmark]: TraceAbstraction took 15953.32 ms. Allocated memory was 235.4 MB in the beginning and 499.6 MB in the end (delta: 264.2 MB). Free memory was 188.0 MB in the beginning and 217.6 MB in the end (delta: -29.6 MB). Peak memory consumption was 234.6 MB. Max. memory is 7.1 GB. [2020-08-18 10:23:02,873 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.94 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 101.7 MB in the beginning and 170.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.97 ms. Allocated memory is still 203.9 MB. Free memory was 170.4 MB in the beginning and 166.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1102.91 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 165.9 MB in the beginning and 189.4 MB in the end (delta: -23.5 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15953.32 ms. Allocated memory was 235.4 MB in the beginning and 499.6 MB in the end (delta: 264.2 MB). Free memory was 188.0 MB in the beginning and 217.6 MB in the end (delta: -29.6 MB). Peak memory consumption was 234.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 769]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L124] int pumpRunning = 0; [L125] int systemActive = 1; [L568] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L812] int waterLevel = 1; [L813] int methaneLevelCritical = 0; [L915] int cleanupTimeShifts = 4; [L988] int retValue_acc ; [L989] int tmp ; [L993] FCALL select_helpers() [L994] FCALL select_features() [L995] CALL, EXPR valid_product() [L803] int retValue_acc ; [L806] retValue_acc = 1 [L807] return (retValue_acc); [L995] RET, EXPR valid_product() [L995] tmp = valid_product() [L997] COND TRUE \read(tmp) [L999] FCALL setup() [L1000] CALL runTest() [L982] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L830] COND TRUE waterLevel < 2 [L831] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___1) [L96] CALL stopSystem() [L343] COND FALSE !(\read(pumpRunning)) [L350] systemActive = 0 [L96] RET stopSystem() [L103] CALL timeShift() [L132] COND FALSE !(\read(pumpRunning)) [L139] COND FALSE !(\read(systemActive)) [L147] CALL __utac_acc__Specification3_spec__1() [L366] int tmp ; [L367] int tmp___0 ; [L368] int tmp___1 ; [L372] CALL, EXPR isMethaneLevelCritical() [L851] int retValue_acc ; [L854] retValue_acc = methaneLevelCritical [L855] return (retValue_acc); [L372] RET, EXPR isMethaneLevelCritical() [L372] tmp = isMethaneLevelCritical() [L374] COND FALSE !(\read(tmp)) [L378] CALL, EXPR getWaterLevel() [L883] int retValue_acc ; [L886] retValue_acc = waterLevel [L887] return (retValue_acc); [L378] RET, EXPR getWaterLevel() [L378] tmp___0 = getWaterLevel() [L380] COND TRUE tmp___0 == 2 [L382] CALL, EXPR isPumpRunning() [L257] int retValue_acc ; [L260] retValue_acc = pumpRunning [L261] return (retValue_acc); [L382] RET, EXPR isPumpRunning() [L382] tmp___1 = isPumpRunning() [L384] COND FALSE !(\read(tmp___1)) [L388] CALL __automaton_fail() [L769] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 719 SDtfs, 1300 SDslu, 479 SDs, 0 SdLazy, 2649 SolverSat, 820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9s 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=777occurred 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, 283 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s 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...