/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:27:20,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:27:20,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:27:20,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:27:20,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:27:20,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:27:20,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:27:20,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:27:20,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:27:20,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:27:20,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:27:20,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:27:20,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:27:20,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:27:20,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:27:20,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:27:20,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:27:20,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:27:20,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:27:20,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:27:20,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:27:20,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:27:20,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:27:20,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:27:20,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:27:20,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:27:20,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:27:20,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:27:20,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:27:20,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:27:20,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:27:20,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:27:20,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:27:20,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:27:20,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:27:20,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:27:20,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:27:20,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:27:20,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:27:20,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:27:20,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:27:20,610 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 18:27:20,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:27:20,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:27:20,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:27:20,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:27:20,653 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:27:20,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:27:20,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:27:20,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:27:20,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:27:20,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:27:20,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:27:20,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:27:20,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:27:20,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:27:20,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:27:20,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:27:20,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:27:20,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:27:20,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:27:20,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:27:20,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:27:20,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:27:20,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:27:20,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:27:20,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:27:20,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:27:20,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:27:20,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:27:20,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:27:20,659 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:27:20,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:27:20,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:27:20,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:27:20,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:27:20,965 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:27:20,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-08-18 18:27:21,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85906d38f/8c9f2509f49d4d899e84f94b47c5e130/FLAG9139409d2 [2020-08-18 18:27:21,590 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:27:21,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-08-18 18:27:21,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85906d38f/8c9f2509f49d4d899e84f94b47c5e130/FLAG9139409d2 [2020-08-18 18:27:21,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85906d38f/8c9f2509f49d4d899e84f94b47c5e130 [2020-08-18 18:27:21,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:27:21,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:27:21,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:21,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:27:21,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:27:21,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:21" (1/1) ... [2020-08-18 18:27:21,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:21, skipping insertion in model container [2020-08-18 18:27:21,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:27:21" (1/1) ... [2020-08-18 18:27:21,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:27:21,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:27:22,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:22,328 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:27:22,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:27:22,462 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:27:22,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22 WrapperNode [2020-08-18 18:27:22,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:27:22,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:27:22,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:27:22,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:27:22,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (1/1) ... [2020-08-18 18:27:22,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (1/1) ... [2020-08-18 18:27:22,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (1/1) ... [2020-08-18 18:27:22,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (1/1) ... [2020-08-18 18:27:22,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (1/1) ... [2020-08-18 18:27:22,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (1/1) ... [2020-08-18 18:27:22,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (1/1) ... [2020-08-18 18:27:22,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:27:22,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:27:22,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:27:22,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:27:22,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (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 18:27:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:27:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:27:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:27:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:27:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:27:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:27:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:27:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:27:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:27:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:27:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:27:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:27:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 18:27:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:27:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:27:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:27:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:27:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:27:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:27:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:27:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:27:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:27:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:27:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:27:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:27:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:27:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:27:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:27:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:27:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:27:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:27:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:27:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:27:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:27:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:27:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:27:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:27:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:27:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:27:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:27:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:27:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:27:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:27:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:27:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:27:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:27:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:27:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 18:27:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:27:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 18:27:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:27:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:27:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:27:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:27:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:27:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:27:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:27:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:27:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:27:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:27:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:27:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:27:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:27:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:27:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:27:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:27:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:27:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:27:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:27:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:27:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:27:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:27:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:27:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:27:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:27:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:27:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:27:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:27:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:27:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:27:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:27:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:27:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:27:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:27:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:27:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:27:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:27:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:27:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:27:23,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:27:23,700 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:27:23,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:23 BoogieIcfgContainer [2020-08-18 18:27:23,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:27:23,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:27:23,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:27:23,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:27:23,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:27:21" (1/3) ... [2020-08-18 18:27:23,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b15f783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:23, skipping insertion in model container [2020-08-18 18:27:23,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:27:22" (2/3) ... [2020-08-18 18:27:23,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b15f783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:27:23, skipping insertion in model container [2020-08-18 18:27:23,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:27:23" (3/3) ... [2020-08-18 18:27:23,713 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-08-18 18:27:23,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:27:23,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:27:23,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:27:23,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:27:23,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:27:23,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:27:23,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:27:23,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:27:23,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:27:23,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:27:23,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:27:23,790 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-18 18:27:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 18:27:23,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:23,801 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] [2020-08-18 18:27:23,801 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:23,807 INFO L82 PathProgramCache]: Analyzing trace with hash -963613915, now seen corresponding path program 1 times [2020-08-18 18:27:23,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:23,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971881315] [2020-08-18 18:27:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:24,451 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:24,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:24,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:24,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:27:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:27:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:24,565 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 18:27:24,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971881315] [2020-08-18 18:27:24,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:24,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:27:24,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897305063] [2020-08-18 18:27:24,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:27:24,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:24,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:27:24,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:27:24,592 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-18 18:27:25,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:25,845 INFO L93 Difference]: Finished difference Result 310 states and 407 transitions. [2020-08-18 18:27:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:27:25,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 18:27:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:25,862 INFO L225 Difference]: With dead ends: 310 [2020-08-18 18:27:25,863 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 18:27:25,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 18:27:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 18:27:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-18 18:27:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 18:27:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-08-18 18:27:25,995 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 46 [2020-08-18 18:27:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:25,996 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-08-18 18:27:25,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:27:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-08-18 18:27:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 18:27:26,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:26,007 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] [2020-08-18 18:27:26,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:27:26,008 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:26,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1539591980, now seen corresponding path program 1 times [2020-08-18 18:27:26,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:26,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18984412] [2020-08-18 18:27:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:26,415 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:26,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:26,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:27:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:26,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:27:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:26,459 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 18:27:26,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18984412] [2020-08-18 18:27:26,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:26,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:27:26,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757025188] [2020-08-18 18:27:26,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:27:26,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:26,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:27:26,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:27:26,464 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 4 states. [2020-08-18 18:27:26,847 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:27,726 INFO L93 Difference]: Finished difference Result 233 states and 286 transitions. [2020-08-18 18:27:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:27:27,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 18:27:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:27,731 INFO L225 Difference]: With dead ends: 233 [2020-08-18 18:27:27,731 INFO L226 Difference]: Without dead ends: 152 [2020-08-18 18:27:27,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 18:27:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-18 18:27:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-18 18:27:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 18:27:27,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-18 18:27:27,794 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 47 [2020-08-18 18:27:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:27,795 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-18 18:27:27,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:27:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-18 18:27:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:27:27,797 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:27,797 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 18:27:27,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:27:27,797 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:27,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1079098286, now seen corresponding path program 1 times [2020-08-18 18:27:27,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:27,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636275410] [2020-08-18 18:27:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:28,129 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:28,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:28,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:28,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:28,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:27:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:28,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:27:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:28,240 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 18:27:28,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636275410] [2020-08-18 18:27:28,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:28,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:27:28,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030826120] [2020-08-18 18:27:28,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:27:28,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:28,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:27:28,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:27:28,248 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 8 states. [2020-08-18 18:27:28,703 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:29,049 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:29,317 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:29,558 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:30,347 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:32,096 INFO L93 Difference]: Finished difference Result 427 states and 532 transitions. [2020-08-18 18:27:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:27:32,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 18:27:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:32,102 INFO L225 Difference]: With dead ends: 427 [2020-08-18 18:27:32,102 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 18:27:32,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 18:27:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 18:27:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 262. [2020-08-18 18:27:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-18 18:27:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 318 transitions. [2020-08-18 18:27:32,205 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 318 transitions. Word has length 52 [2020-08-18 18:27:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:32,206 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 318 transitions. [2020-08-18 18:27:32,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:27:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 318 transitions. [2020-08-18 18:27:32,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 18:27:32,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:32,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:32,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:27:32,208 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:32,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:32,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1051584563, now seen corresponding path program 1 times [2020-08-18 18:27:32,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:32,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037798821] [2020-08-18 18:27:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,543 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:27:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:27:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 18:27:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:32,641 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 18:27:32,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037798821] [2020-08-18 18:27:32,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:32,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:27:32,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781394676] [2020-08-18 18:27:32,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:27:32,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:32,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:27:32,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:27:32,643 INFO L87 Difference]: Start difference. First operand 262 states and 318 transitions. Second operand 8 states. [2020-08-18 18:27:32,969 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:33,956 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:34,309 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:34,556 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:34,858 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:35,325 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:36,155 INFO L93 Difference]: Finished difference Result 847 states and 1105 transitions. [2020-08-18 18:27:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:27:36,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 18:27:36,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:36,163 INFO L225 Difference]: With dead ends: 847 [2020-08-18 18:27:36,163 INFO L226 Difference]: Without dead ends: 609 [2020-08-18 18:27:36,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:27:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-08-18 18:27:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 479. [2020-08-18 18:27:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-08-18 18:27:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 586 transitions. [2020-08-18 18:27:36,340 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 586 transitions. Word has length 57 [2020-08-18 18:27:36,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:36,340 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 586 transitions. [2020-08-18 18:27:36,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:27:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 586 transitions. [2020-08-18 18:27:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 18:27:36,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:36,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:36,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:27:36,343 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:36,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:36,344 INFO L82 PathProgramCache]: Analyzing trace with hash -450930313, now seen corresponding path program 1 times [2020-08-18 18:27:36,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:36,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523826337] [2020-08-18 18:27:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,613 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:27:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:27:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:27:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 18:27:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:36,735 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 18:27:36,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523826337] [2020-08-18 18:27:36,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:36,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:27:36,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421069556] [2020-08-18 18:27:36,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:27:36,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:27:36,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:27:36,737 INFO L87 Difference]: Start difference. First operand 479 states and 586 transitions. Second operand 9 states. [2020-08-18 18:27:37,084 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:38,042 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:38,315 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:38,558 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:39,116 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:39,425 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:40,393 INFO L93 Difference]: Finished difference Result 1361 states and 1836 transitions. [2020-08-18 18:27:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:27:40,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 18:27:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:40,400 INFO L225 Difference]: With dead ends: 1361 [2020-08-18 18:27:40,401 INFO L226 Difference]: Without dead ends: 906 [2020-08-18 18:27:40,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:27:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-18 18:27:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 719. [2020-08-18 18:27:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-08-18 18:27:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 887 transitions. [2020-08-18 18:27:40,587 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 887 transitions. Word has length 61 [2020-08-18 18:27:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:40,588 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 887 transitions. [2020-08-18 18:27:40,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:27:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 887 transitions. [2020-08-18 18:27:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:27:40,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:40,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:40,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:27:40,591 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:40,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:40,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1506642599, now seen corresponding path program 1 times [2020-08-18 18:27:40,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:40,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283639863] [2020-08-18 18:27:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,829 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:40,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:27:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:27:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:27:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:27:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:27:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:40,984 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 18:27:40,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283639863] [2020-08-18 18:27:40,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:40,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:27:40,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125339103] [2020-08-18 18:27:40,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:27:40,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:40,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:27:40,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:27:40,989 INFO L87 Difference]: Start difference. First operand 719 states and 887 transitions. Second operand 9 states. [2020-08-18 18:27:41,488 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:27:42,547 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:42,810 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:27:43,048 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:43,298 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:44,949 INFO L93 Difference]: Finished difference Result 2409 states and 3416 transitions. [2020-08-18 18:27:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:27:44,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 18:27:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:44,971 INFO L225 Difference]: With dead ends: 2409 [2020-08-18 18:27:44,971 INFO L226 Difference]: Without dead ends: 1714 [2020-08-18 18:27:44,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:27:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-08-18 18:27:45,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1291. [2020-08-18 18:27:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-08-18 18:27:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1578 transitions. [2020-08-18 18:27:45,318 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1578 transitions. Word has length 84 [2020-08-18 18:27:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:45,319 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1578 transitions. [2020-08-18 18:27:45,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:27:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1578 transitions. [2020-08-18 18:27:45,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:27:45,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:45,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:45,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:27:45,324 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:45,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:45,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1762832698, now seen corresponding path program 1 times [2020-08-18 18:27:45,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:45,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710532928] [2020-08-18 18:27:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,595 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:27:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:27:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:27:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:27:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:27:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:45,756 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 18:27:45,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710532928] [2020-08-18 18:27:45,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:45,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:27:45,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290300360] [2020-08-18 18:27:45,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:27:45,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:45,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:27:45,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:27:45,767 INFO L87 Difference]: Start difference. First operand 1291 states and 1578 transitions. Second operand 9 states. [2020-08-18 18:27:46,749 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:27:46,986 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:27:47,251 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:47,486 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:48,661 INFO L93 Difference]: Finished difference Result 2981 states and 3956 transitions. [2020-08-18 18:27:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:27:48,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 18:27:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:48,681 INFO L225 Difference]: With dead ends: 2981 [2020-08-18 18:27:48,681 INFO L226 Difference]: Without dead ends: 1714 [2020-08-18 18:27:48,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:27:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-08-18 18:27:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1331. [2020-08-18 18:27:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-08-18 18:27:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1618 transitions. [2020-08-18 18:27:48,979 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1618 transitions. Word has length 84 [2020-08-18 18:27:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:48,980 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1618 transitions. [2020-08-18 18:27:48,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:27:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1618 transitions. [2020-08-18 18:27:48,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:27:48,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:48,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:48,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:27:48,983 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:48,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1785464952, now seen corresponding path program 1 times [2020-08-18 18:27:48,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:48,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591120769] [2020-08-18 18:27:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,302 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:27:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:27:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:27:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:27:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:27:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:27:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 18:27:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:27:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:27:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:27:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:27:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:27:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:27:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:27:49,409 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 18:27:49,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591120769] [2020-08-18 18:27:49,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:27:49,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 18:27:49,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067393064] [2020-08-18 18:27:49,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:27:49,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:27:49,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:27:49,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:27:49,411 INFO L87 Difference]: Start difference. First operand 1331 states and 1618 transitions. Second operand 11 states. [2020-08-18 18:27:49,901 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:50,140 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:50,371 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:51,138 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:51,407 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:51,653 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:27:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:27:52,858 INFO L93 Difference]: Finished difference Result 2667 states and 3504 transitions. [2020-08-18 18:27:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:27:52,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-18 18:27:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:27:52,871 INFO L225 Difference]: With dead ends: 2667 [2020-08-18 18:27:52,871 INFO L226 Difference]: Without dead ends: 1360 [2020-08-18 18:27:52,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:27:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-08-18 18:27:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1097. [2020-08-18 18:27:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2020-08-18 18:27:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1306 transitions. [2020-08-18 18:27:53,122 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1306 transitions. Word has length 84 [2020-08-18 18:27:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:27:53,123 INFO L479 AbstractCegarLoop]: Abstraction has 1097 states and 1306 transitions. [2020-08-18 18:27:53,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:27:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1306 transitions. [2020-08-18 18:27:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 18:27:53,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:27:53,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:27:53,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:27:53,126 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:27:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:27:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1546032113, now seen corresponding path program 1 times [2020-08-18 18:27:53,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:27:53,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263504136] [2020-08-18 18:27:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:27:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:27:53,186 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:27:53,186 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:27:53,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:27:53,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:27:53 BoogieIcfgContainer [2020-08-18 18:27:53,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:27:53,234 INFO L168 Benchmark]: Toolchain (without parser) took 31371.13 ms. Allocated memory was 140.5 MB in the beginning and 662.2 MB in the end (delta: 521.7 MB). Free memory was 103.0 MB in the beginning and 115.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 509.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:27:53,234 INFO L168 Benchmark]: CDTParser took 0.18 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. [2020-08-18 18:27:53,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.01 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 172.8 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:27:53,246 INFO L168 Benchmark]: Boogie Preprocessor took 131.09 ms. Allocated memory is still 204.5 MB. Free memory was 172.8 MB in the beginning and 167.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:27:53,247 INFO L168 Benchmark]: RCFGBuilder took 1110.61 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 167.8 MB in the beginning and 194.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:27:53,248 INFO L168 Benchmark]: TraceAbstraction took 29525.37 ms. Allocated memory was 235.4 MB in the beginning and 662.2 MB in the end (delta: 426.8 MB). Free memory was 193.5 MB in the beginning and 115.1 MB in the end (delta: 78.4 MB). Peak memory consumption was 505.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:27:53,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 599.01 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 172.8 MB in the end (delta: -70.0 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.09 ms. Allocated memory is still 204.5 MB. Free memory was 172.8 MB in the beginning and 167.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1110.61 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 167.8 MB in the beginning and 194.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29525.37 ms. Allocated memory was 235.4 MB in the beginning and 662.2 MB in the end (delta: 426.8 MB). Free memory was 193.5 MB in the beginning and 115.1 MB in the end (delta: 78.4 MB). Peak memory consumption was 505.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 490]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int pumpRunning = 0; [L52] int systemActive = 1; [L352] int cleanupTimeShifts = 4; [L664] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; [L428] int retValue_acc ; [L429] int tmp ; [L433] FCALL select_helpers() [L434] FCALL select_features() [L435] CALL, EXPR valid_product() [L477] int retValue_acc ; [L480] retValue_acc = 1 [L481] return (retValue_acc); [L435] RET, EXPR valid_product() [L435] tmp = valid_product() [L437] COND TRUE \read(tmp) [L439] FCALL setup() [L440] CALL runTest() [L419] CALL test() [L257] int splverifierCounter ; [L258] int tmp ; [L259] int tmp___0 ; [L260] int tmp___1 ; [L261] int tmp___2 ; [L264] splverifierCounter = 0 [L266] COND TRUE 1 [L268] COND TRUE splverifierCounter < 4 [L274] tmp = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp) [L278] CALL waterRise() [L880] COND TRUE waterLevel < 2 [L881] waterLevel = waterLevel + 1 [L278] RET waterRise() [L284] tmp___0 = __VERIFIER_nondet_int() [L286] COND TRUE \read(tmp___0) [L288] CALL changeMethaneLevel() [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] methaneLevelCritical = 1 [L288] RET changeMethaneLevel() [L294] tmp___2 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp___2)) [L302] tmp___1 = __VERIFIER_nondet_int() [L304] COND FALSE !(\read(tmp___1)) [L313] CALL timeShift() [L59] COND FALSE !(\read(pumpRunning)) [L66] COND TRUE \read(systemActive) [L68] CALL processEnvironment() [L114] int tmp ; [L117] COND FALSE !(\read(pumpRunning)) [L132] CALL processEnvironment__wrappee__highWaterSensor() [L88] int tmp ; [L91] COND TRUE ! pumpRunning [L93] CALL, EXPR isHighWaterLevel() [L211] int retValue_acc ; [L212] int tmp ; [L213] int tmp___0 ; [L217] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L217] RET, EXPR isHighWaterSensorDry() [L217] tmp = isHighWaterSensorDry() [L219] COND FALSE !(\read(tmp)) [L222] tmp___0 = 1 [L224] retValue_acc = tmp___0 [L225] return (retValue_acc); [L93] RET, EXPR isHighWaterLevel() [L93] tmp = isHighWaterLevel() [L95] COND TRUE \read(tmp) [L97] CALL activatePump() [L142] pumpRunning = 1 [L97] RET activatePump() [L132] RET processEnvironment__wrappee__highWaterSensor() [L68] RET processEnvironment() [L74] CALL __utac_acc__Specification1_spec__1() [L327] int tmp ; [L328] int tmp___0 ; [L332] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L332] RET, EXPR isMethaneLevelCritical() [L332] tmp = isMethaneLevelCritical() [L334] COND TRUE \read(tmp) [L336] CALL, EXPR isPumpRunning() [L166] int retValue_acc ; [L169] retValue_acc = pumpRunning [L170] return (retValue_acc); [L336] RET, EXPR isPumpRunning() [L336] tmp___0 = isPumpRunning() [L338] COND TRUE \read(tmp___0) [L340] CALL __automaton_fail() [L490] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 23.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 947 SDtfs, 1824 SDslu, 1206 SDs, 0 SdLazy, 5518 SolverSat, 1253 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1331occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 1514 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 150284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...