/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:45:26,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:45:26,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:45:26,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:45:26,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:45:26,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:45:26,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:45:26,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:45:26,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:45:26,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:45:26,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:45:26,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:45:26,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:45:26,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:45:26,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:45:26,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:45:26,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:45:26,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:45:26,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:45:26,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:45:26,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:45:26,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:45:26,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:45:26,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:45:26,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:45:26,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:45:26,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:45:26,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:45:26,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:45:26,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:45:26,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:45:26,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:45:26,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:45:26,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:45:26,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:45:26,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:45:26,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:45:26,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:45:26,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:45:26,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:45:26,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:45:26,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 14:45:26,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:45:26,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:45:26,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:45:26,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:45:26,690 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:45:26,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:45:26,691 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:45:26,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:45:26,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:45:26,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:45:26,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:45:26,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:45:26,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:45:26,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:45:26,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:45:26,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:45:26,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:45:26,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:45:26,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:45:26,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:45:26,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:45:26,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:45:26,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:45:26,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:45:26,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:45:26,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:45:26,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:45:26,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:45:26,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:45:26,695 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:45:26,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:45:27,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:45:27,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:45:27,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:45:27,009 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:45:27,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-08-21 14:45:27,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d32e2e959/38d56cac24484229aed246f6b2864c48/FLAG59a98802a [2020-08-21 14:45:27,548 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:45:27,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-08-21 14:45:27,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d32e2e959/38d56cac24484229aed246f6b2864c48/FLAG59a98802a [2020-08-21 14:45:27,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d32e2e959/38d56cac24484229aed246f6b2864c48 [2020-08-21 14:45:27,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:45:27,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:45:27,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:45:27,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:45:27,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:45:27,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:45:27" (1/1) ... [2020-08-21 14:45:27,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4236b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:27, skipping insertion in model container [2020-08-21 14:45:27,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:45:27" (1/1) ... [2020-08-21 14:45:27,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:45:27,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:45:28,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:45:28,310 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:45:28,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:45:28,503 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:45:28,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28 WrapperNode [2020-08-21 14:45:28,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:45:28,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:45:28,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:45:28,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:45:28,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (1/1) ... [2020-08-21 14:45:28,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (1/1) ... [2020-08-21 14:45:28,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (1/1) ... [2020-08-21 14:45:28,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (1/1) ... [2020-08-21 14:45:28,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (1/1) ... [2020-08-21 14:45:28,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (1/1) ... [2020-08-21 14:45:28,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (1/1) ... [2020-08-21 14:45:28,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:45:28,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:45:28,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:45:28,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:45:28,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:45:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:45:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:45:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:45:28,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:45:28,692 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:45:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:45:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 14:45:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:45:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:45:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:45:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:45:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:45:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:45:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 14:45:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 14:45:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:45:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:45:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:45:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:45:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:45:28,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:45:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:45:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:45:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:45:28,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:45:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:45:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:45:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:45:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:45:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:45:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:45:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:45:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:45:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:45:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:45:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 14:45:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:45:28,700 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:45:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:45:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:45:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:45:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:45:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:45:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:45:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:45:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:45:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:45:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 14:45:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:45:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:45:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:45:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:45:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:45:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 14:45:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:45:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:45:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:45:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:45:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 14:45:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 14:45:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:45:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:45:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:45:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:45:28,708 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:45:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:45:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:45:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:45:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:45:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:45:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:45:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:45:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:45:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:45:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:45:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:45:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:45:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:45:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:45:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:45:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:45:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:45:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:45:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:45:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:45:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:45:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:45:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:45:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:45:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:45:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:45:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:45:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:45:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:45:29,777 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:45:29,777 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:45:29,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:45:29 BoogieIcfgContainer [2020-08-21 14:45:29,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:45:29,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:45:29,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:45:29,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:45:29,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:45:27" (1/3) ... [2020-08-21 14:45:29,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7d780d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:45:29, skipping insertion in model container [2020-08-21 14:45:29,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:28" (2/3) ... [2020-08-21 14:45:29,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7d780d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:45:29, skipping insertion in model container [2020-08-21 14:45:29,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:45:29" (3/3) ... [2020-08-21 14:45:29,794 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2020-08-21 14:45:29,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:45:29,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:45:29,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:45:29,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:45:29,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:45:29,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:45:29,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:45:29,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:45:29,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:45:29,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:45:29,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:45:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-21 14:45:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 14:45:29,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:29,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:29,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:29,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:29,916 INFO L82 PathProgramCache]: Analyzing trace with hash -586231627, now seen corresponding path program 1 times [2020-08-21 14:45:29,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:29,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38152893] [2020-08-21 14:45:29,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,602 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:30,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:45:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:45:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:45:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:30,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38152893] [2020-08-21 14:45:30,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:30,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:45:30,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975408539] [2020-08-21 14:45:30,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:45:30,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:45:30,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:45:30,788 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-21 14:45:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:31,960 INFO L93 Difference]: Finished difference Result 314 states and 413 transitions. [2020-08-21 14:45:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:45:31,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 14:45:31,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:31,979 INFO L225 Difference]: With dead ends: 314 [2020-08-21 14:45:31,979 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 14:45:31,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:45:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 14:45:32,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2020-08-21 14:45:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-21 14:45:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-21 14:45:32,079 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 52 [2020-08-21 14:45:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:32,079 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-21 14:45:32,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:45:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-21 14:45:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 14:45:32,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:32,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:32,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:45:32,084 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:32,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1405243585, now seen corresponding path program 1 times [2020-08-21 14:45:32,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:32,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494971325] [2020-08-21 14:45:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,458 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:45:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:45:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:45:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:32,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494971325] [2020-08-21 14:45:32,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:32,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:45:32,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59673020] [2020-08-21 14:45:32,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:45:32,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:32,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:45:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:45:32,506 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 4 states. [2020-08-21 14:45:32,884 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:45:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:33,727 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2020-08-21 14:45:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:45:33,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 14:45:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:33,731 INFO L225 Difference]: With dead ends: 237 [2020-08-21 14:45:33,732 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 14:45:33,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:45:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 14:45:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2020-08-21 14:45:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 14:45:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-21 14:45:33,768 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 53 [2020-08-21 14:45:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:33,768 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-21 14:45:33,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:45:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-21 14:45:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 14:45:33,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:33,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:33,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:45:33,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:33,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:33,772 INFO L82 PathProgramCache]: Analyzing trace with hash 340068721, now seen corresponding path program 1 times [2020-08-21 14:45:33,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:33,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728536903] [2020-08-21 14:45:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,099 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:45:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:45:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:45:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:34,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728536903] [2020-08-21 14:45:34,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:34,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:45:34,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114984983] [2020-08-21 14:45:34,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:45:34,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:34,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:45:34,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:45:34,166 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 8 states. [2020-08-21 14:45:34,509 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:34,828 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:35,060 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:35,285 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:35,972 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:45:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:37,742 INFO L93 Difference]: Finished difference Result 439 states and 548 transitions. [2020-08-21 14:45:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:45:37,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 14:45:37,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:37,752 INFO L225 Difference]: With dead ends: 439 [2020-08-21 14:45:37,752 INFO L226 Difference]: Without dead ends: 337 [2020-08-21 14:45:37,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:45:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-21 14:45:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-08-21 14:45:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-21 14:45:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 331 transitions. [2020-08-21 14:45:37,838 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 331 transitions. Word has length 58 [2020-08-21 14:45:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:37,838 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 331 transitions. [2020-08-21 14:45:37,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:45:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 331 transitions. [2020-08-21 14:45:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 14:45:37,842 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:37,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:37,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:45:37,842 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:37,843 INFO L82 PathProgramCache]: Analyzing trace with hash -805179876, now seen corresponding path program 1 times [2020-08-21 14:45:37,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:37,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471973016] [2020-08-21 14:45:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,127 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:38,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:45:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:45:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 14:45:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:45:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:38,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471973016] [2020-08-21 14:45:38,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:38,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:45:38,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420528435] [2020-08-21 14:45:38,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:45:38,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:38,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:45:38,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:45:38,236 INFO L87 Difference]: Start difference. First operand 272 states and 331 transitions. Second operand 8 states. [2020-08-21 14:45:38,626 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:39,892 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:40,212 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:40,492 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:45:40,767 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:41,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:41,465 INFO L93 Difference]: Finished difference Result 839 states and 1103 transitions. [2020-08-21 14:45:41,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:45:41,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 14:45:41,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:41,472 INFO L225 Difference]: With dead ends: 839 [2020-08-21 14:45:41,472 INFO L226 Difference]: Without dead ends: 591 [2020-08-21 14:45:41,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:45:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-08-21 14:45:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 521. [2020-08-21 14:45:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-08-21 14:45:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 649 transitions. [2020-08-21 14:45:41,583 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 649 transitions. Word has length 63 [2020-08-21 14:45:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:41,583 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 649 transitions. [2020-08-21 14:45:41,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:45:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 649 transitions. [2020-08-21 14:45:41,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 14:45:41,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:41,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:41,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:45:41,588 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:41,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1401738146, now seen corresponding path program 1 times [2020-08-21 14:45:41,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:41,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644984751] [2020-08-21 14:45:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,838 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:45:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:45:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:45:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:45:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:45:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:45:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:45:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:45:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:45:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 14:45:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 14:45:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:45:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:45:41,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644984751] [2020-08-21 14:45:41,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:45:41,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:45:41,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735325634] [2020-08-21 14:45:41,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:45:41,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:45:41,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:45:41,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:45:41,933 INFO L87 Difference]: Start difference. First operand 521 states and 649 transitions. Second operand 6 states. [2020-08-21 14:45:42,284 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:45:43,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:45:43,084 INFO L93 Difference]: Finished difference Result 890 states and 1163 transitions. [2020-08-21 14:45:43,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:45:43,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 14:45:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:45:43,088 INFO L225 Difference]: With dead ends: 890 [2020-08-21 14:45:43,088 INFO L226 Difference]: Without dead ends: 393 [2020-08-21 14:45:43,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:45:43,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-08-21 14:45:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 343. [2020-08-21 14:45:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-21 14:45:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 394 transitions. [2020-08-21 14:45:43,158 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 394 transitions. Word has length 67 [2020-08-21 14:45:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:45:43,159 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 394 transitions. [2020-08-21 14:45:43,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:45:43,159 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 394 transitions. [2020-08-21 14:45:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 14:45:43,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:45:43,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:45:43,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:45:43,161 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:45:43,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:45:43,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1293290686, now seen corresponding path program 1 times [2020-08-21 14:45:43,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:45:43,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637898123] [2020-08-21 14:45:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:45:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:45:43,210 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:45:43,211 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:45:43,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:45:43,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:45:43 BoogieIcfgContainer [2020-08-21 14:45:43,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:45:43,237 INFO L168 Benchmark]: Toolchain (without parser) took 15381.53 ms. Allocated memory was 140.5 MB in the beginning and 486.0 MB in the end (delta: 345.5 MB). Free memory was 103.0 MB in the beginning and 119.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 328.6 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:43,238 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:45:43,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.66 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 172.3 MB in the end (delta: -69.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:43,240 INFO L168 Benchmark]: Boogie Preprocessor took 97.06 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 168.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:43,241 INFO L168 Benchmark]: RCFGBuilder took 1181.97 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 168.2 MB in the beginning and 196.3 MB in the end (delta: -28.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:43,242 INFO L168 Benchmark]: TraceAbstraction took 13448.66 ms. Allocated memory was 237.0 MB in the beginning and 486.0 MB in the end (delta: 249.0 MB). Free memory was 194.8 MB in the beginning and 119.9 MB in the end (delta: 74.9 MB). Peak memory consumption was 324.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:45:43,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.66 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 172.3 MB in the end (delta: -69.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.06 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 168.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1181.97 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 168.2 MB in the beginning and 196.3 MB in the end (delta: -28.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13448.66 ms. Allocated memory was 237.0 MB in the beginning and 486.0 MB in the end (delta: 249.0 MB). Free memory was 194.8 MB in the beginning and 119.9 MB in the end (delta: 74.9 MB). Peak memory consumption was 324.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L369] int cleanupTimeShifts = 4; [L637] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L445] int retValue_acc ; [L446] int tmp ; [L450] FCALL select_helpers() [L451] FCALL select_features() [L452] CALL, EXPR valid_product() [L949] int retValue_acc ; [L952] retValue_acc = 1 [L953] return (retValue_acc); [L452] RET, EXPR valid_product() [L452] tmp = valid_product() [L454] COND TRUE \read(tmp) [L456] FCALL setup() [L457] CALL runTest() [L436] CALL test() [L266] int splverifierCounter ; [L267] int tmp ; [L268] int tmp___0 ; [L269] int tmp___1 ; [L270] int tmp___2 ; [L273] splverifierCounter = 0 [L275] COND TRUE 1 [L277] COND TRUE splverifierCounter < 4 [L283] tmp = __VERIFIER_nondet_int() [L285] COND TRUE \read(tmp) [L287] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L287] RET waterRise() [L293] tmp___0 = __VERIFIER_nondet_int() [L295] COND FALSE !(\read(tmp___0)) [L303] tmp___2 = __VERIFIER_nondet_int() [L305] COND FALSE !(\read(tmp___2)) [L311] tmp___1 = __VERIFIER_nondet_int() [L313] COND TRUE \read(tmp___1) [L315] CALL stopSystem() [L242] COND FALSE !(\read(pumpRunning)) [L249] systemActive = 0 [L315] RET stopSystem() [L322] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND FALSE !(\read(systemActive)) [L83] CALL __utac_acc__Specification3_spec__1() [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L342] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L342] RET, EXPR isMethaneLevelCritical() [L342] tmp = isMethaneLevelCritical() [L344] COND FALSE !(\read(tmp)) [L348] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L348] RET, EXPR getWaterLevel() [L348] tmp___0 = getWaterLevel() [L350] COND TRUE tmp___0 == 2 [L352] CALL, EXPR isPumpRunning() [L175] int retValue_acc ; [L178] retValue_acc = pumpRunning [L179] return (retValue_acc); [L352] RET, EXPR isPumpRunning() [L352] tmp___1 = isPumpRunning() [L354] COND FALSE !(\read(tmp___1)) [L358] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 237 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 592 SDtfs, 897 SDslu, 440 SDs, 0 SdLazy, 2174 SolverSat, 577 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=521occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 248 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...