/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=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:41:14,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:41:14,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:41:14,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:41:14,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:41:14,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:41:14,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:41:14,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:41:14,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:41:14,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:41:14,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:41:14,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:41:14,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:41:14,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:41:14,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:41:14,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:41:14,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:41:14,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:41:14,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:41:14,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:41:14,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:41:14,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:41:14,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:41:14,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:41:14,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:41:14,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:41:14,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:41:14,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:41:14,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:41:14,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:41:14,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:41:14,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:41:14,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:41:14,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:41:14,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:41:14,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:41:14,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:41:14,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:41:14,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:41:14,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:41:14,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:41:14,533 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 17:41:14,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:41:14,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:41:14,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:41:14,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:41:14,558 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:41:14,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:41:14,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:41:14,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:41:14,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:41:14,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:41:14,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:41:14,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:41:14,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:41:14,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:41:14,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:41:14,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:41:14,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:41:14,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:41:14,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:41:14,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:41:14,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:41:14,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:41:14,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:41:14,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:41:14,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:41:14,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:41:14,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:41:14,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:41:14,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:41:14,563 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:41:14,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:41:14,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:41:14,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:41:14,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:41:14,895 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:41:14,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-18 17:41:14,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfbf6b0c6/5b6363cb616743359a5bd39d0ce65ec9/FLAG777fb4a72 [2020-08-18 17:41:15,502 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:41:15,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-08-18 17:41:15,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfbf6b0c6/5b6363cb616743359a5bd39d0ce65ec9/FLAG777fb4a72 [2020-08-18 17:41:15,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfbf6b0c6/5b6363cb616743359a5bd39d0ce65ec9 [2020-08-18 17:41:15,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:41:15,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:41:15,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:41:15,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:41:15,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:41:15,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:41:15" (1/1) ... [2020-08-18 17:41:15,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7331a2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:15, skipping insertion in model container [2020-08-18 17:41:15,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:41:15" (1/1) ... [2020-08-18 17:41:15,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:41:15,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:41:16,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:41:16,390 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:41:16,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:41:16,507 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:41:16,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16 WrapperNode [2020-08-18 17:41:16,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:41:16,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:41:16,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:41:16,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:41:16,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (1/1) ... [2020-08-18 17:41:16,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:41:16,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:41:16,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:41:16,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:41:16,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (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 17:41:16,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:41:16,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:41:16,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:41:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:41:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:41:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:41:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:41:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:41:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:41:16,674 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:41:16,675 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:41:16,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:41:16,675 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:41:16,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:41:16,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:41:16,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:41:16,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 17:41:16,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 17:41:16,676 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:41:16,676 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:41:16,676 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:41:16,676 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:41:16,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:41:16,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:41:16,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:41:16,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:41:16,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:41:16,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:41:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:41:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:41:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:41:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:41:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:41:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:41:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:41:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:41:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:41:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:41:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 17:41:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:41:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:41:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:41:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:41:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:41:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:41:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:41:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:41:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:41:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:41:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 17:41:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:41:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:41:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:41:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:41:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:41:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:41:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:41:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:41:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:41:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:41:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:41:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:41:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:41:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:41:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 17:41:16,693 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:41:16,693 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:41:16,693 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:41:16,693 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:41:16,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:41:16,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:41:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:41:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:41:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:41:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:41:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:41:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:41:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:41:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:41:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:41:16,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:41:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:41:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 17:41:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:41:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:41:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:41:16,696 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:41:16,697 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:41:16,697 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:41:16,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:41:16,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:41:16,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:41:17,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:41:17,763 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:41:17,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:41:17 BoogieIcfgContainer [2020-08-18 17:41:17,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:41:17,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:41:17,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:41:17,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:41:17,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:41:15" (1/3) ... [2020-08-18 17:41:17,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ec9953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:41:17, skipping insertion in model container [2020-08-18 17:41:17,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:41:16" (2/3) ... [2020-08-18 17:41:17,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ec9953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:41:17, skipping insertion in model container [2020-08-18 17:41:17,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:41:17" (3/3) ... [2020-08-18 17:41:17,777 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2020-08-18 17:41:17,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:41:17,795 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:41:17,809 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:41:17,834 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:41:17,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:41:17,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:41:17,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:41:17,835 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:41:17,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:41:17,836 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:41:17,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:41:17,859 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-18 17:41:17,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 17:41:17,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:17,869 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] [2020-08-18 17:41:17,870 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:17,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:17,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1720198034, now seen corresponding path program 1 times [2020-08-18 17:41:17,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:17,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616194942] [2020-08-18 17:41:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,616 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:18,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:41:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:41:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:18,762 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 17:41:18,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616194942] [2020-08-18 17:41:18,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:18,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:41:18,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193674318] [2020-08-18 17:41:18,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:41:18,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:18,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:41:18,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:41:18,793 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2020-08-18 17:41:19,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:19,928 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2020-08-18 17:41:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:41:19,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 17:41:19,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:19,945 INFO L225 Difference]: With dead ends: 258 [2020-08-18 17:41:19,945 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 17:41:19,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:41:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 17:41:20,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2020-08-18 17:41:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 17:41:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-18 17:41:20,037 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 51 [2020-08-18 17:41:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:20,038 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-18 17:41:20,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:41:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-18 17:41:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 17:41:20,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:20,043 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 17:41:20,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:41:20,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:20,044 INFO L82 PathProgramCache]: Analyzing trace with hash 220132220, now seen corresponding path program 1 times [2020-08-18 17:41:20,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:20,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995581215] [2020-08-18 17:41:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,424 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:41:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:41:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:20,498 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 17:41:20,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995581215] [2020-08-18 17:41:20,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:20,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:41:20,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001147440] [2020-08-18 17:41:20,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:41:20,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:41:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:41:20,501 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 5 states. [2020-08-18 17:41:20,954 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:21,714 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2020-08-18 17:41:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:41:21,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 17:41:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:21,718 INFO L225 Difference]: With dead ends: 199 [2020-08-18 17:41:21,718 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 17:41:21,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:41:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 17:41:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 17:41:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 17:41:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-18 17:41:21,755 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 52 [2020-08-18 17:41:21,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:21,755 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-18 17:41:21,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:41:21,755 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-18 17:41:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 17:41:21,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:21,758 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 17:41:21,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:41:21,758 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:21,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:21,759 INFO L82 PathProgramCache]: Analyzing trace with hash 889380391, now seen corresponding path program 1 times [2020-08-18 17:41:21,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:21,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358147402] [2020-08-18 17:41:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,081 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:22,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:41:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:41:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:22,192 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 17:41:22,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358147402] [2020-08-18 17:41:22,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:22,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:41:22,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842251300] [2020-08-18 17:41:22,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:41:22,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:41:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:41:22,198 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 9 states. [2020-08-18 17:41:22,563 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:22,859 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:23,100 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:23,345 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:24,356 INFO L93 Difference]: Finished difference Result 212 states and 266 transitions. [2020-08-18 17:41:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:41:24,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 17:41:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:24,364 INFO L225 Difference]: With dead ends: 212 [2020-08-18 17:41:24,364 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 17:41:24,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:41:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 17:41:24,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 17:41:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 17:41:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-08-18 17:41:24,404 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 57 [2020-08-18 17:41:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:24,405 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-08-18 17:41:24,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:41:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-08-18 17:41:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 17:41:24,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:24,408 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] [2020-08-18 17:41:24,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:41:24,408 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:24,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1390934310, now seen corresponding path program 1 times [2020-08-18 17:41:24,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:24,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890063040] [2020-08-18 17:41:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,699 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:24,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:41:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:41:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 17:41:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:24,823 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 17:41:24,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890063040] [2020-08-18 17:41:24,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:24,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:41:24,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68039060] [2020-08-18 17:41:24,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:41:24,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:24,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:41:24,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:41:24,826 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 7 states. [2020-08-18 17:41:25,133 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:26,266 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:26,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:26,791 INFO L93 Difference]: Finished difference Result 302 states and 382 transitions. [2020-08-18 17:41:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:41:26,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-18 17:41:26,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:26,795 INFO L225 Difference]: With dead ends: 302 [2020-08-18 17:41:26,796 INFO L226 Difference]: Without dead ends: 225 [2020-08-18 17:41:26,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:41:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-18 17:41:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 176. [2020-08-18 17:41:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-18 17:41:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2020-08-18 17:41:26,837 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 65 [2020-08-18 17:41:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:26,837 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2020-08-18 17:41:26,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:41:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2020-08-18 17:41:26,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 17:41:26,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:26,840 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] [2020-08-18 17:41:26,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:41:26,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:26,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:26,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1075030192, now seen corresponding path program 1 times [2020-08-18 17:41:26,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:26,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572936644] [2020-08-18 17:41:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,075 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:27,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:41:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 17:41:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 17:41:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:27,210 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 17:41:27,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572936644] [2020-08-18 17:41:27,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:27,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:41:27,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200981993] [2020-08-18 17:41:27,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:41:27,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:27,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:41:27,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:41:27,213 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 12 states. [2020-08-18 17:41:27,749 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:28,027 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:28,259 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:28,985 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:29,233 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:41:29,509 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:29,759 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:30,533 INFO L93 Difference]: Finished difference Result 372 states and 462 transitions. [2020-08-18 17:41:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 17:41:30,533 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 17:41:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:30,536 INFO L225 Difference]: With dead ends: 372 [2020-08-18 17:41:30,536 INFO L226 Difference]: Without dead ends: 224 [2020-08-18 17:41:30,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 17:41:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-18 17:41:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 181. [2020-08-18 17:41:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-08-18 17:41:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2020-08-18 17:41:30,578 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 79 [2020-08-18 17:41:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:30,579 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2020-08-18 17:41:30,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:41:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2020-08-18 17:41:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 17:41:30,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:30,581 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] [2020-08-18 17:41:30,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:41:30,581 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:30,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1584503282, now seen corresponding path program 1 times [2020-08-18 17:41:30,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:30,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394883486] [2020-08-18 17:41:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,924 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:41:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 17:41:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:31,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 17:41:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:31,024 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 17:41:31,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394883486] [2020-08-18 17:41:31,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:31,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:41:31,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199330050] [2020-08-18 17:41:31,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:41:31,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:31,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:41:31,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:41:31,027 INFO L87 Difference]: Start difference. First operand 181 states and 208 transitions. Second operand 9 states. [2020-08-18 17:41:31,370 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:32,475 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:32,758 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:32,987 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:33,200 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:33,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:33,951 INFO L93 Difference]: Finished difference Result 539 states and 685 transitions. [2020-08-18 17:41:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 17:41:33,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 17:41:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:33,955 INFO L225 Difference]: With dead ends: 539 [2020-08-18 17:41:33,955 INFO L226 Difference]: Without dead ends: 386 [2020-08-18 17:41:33,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 17:41:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-08-18 17:41:34,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 310. [2020-08-18 17:41:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-08-18 17:41:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 356 transitions. [2020-08-18 17:41:34,063 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 356 transitions. Word has length 79 [2020-08-18 17:41:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:34,063 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 356 transitions. [2020-08-18 17:41:34,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:41:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 356 transitions. [2020-08-18 17:41:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 17:41:34,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:34,066 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] [2020-08-18 17:41:34,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:41:34,066 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:34,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1898506966, now seen corresponding path program 1 times [2020-08-18 17:41:34,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:34,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393746150] [2020-08-18 17:41:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,360 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:34,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:41:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:41:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 17:41:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 17:41:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:34,497 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 17:41:34,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393746150] [2020-08-18 17:41:34,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:34,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:41:34,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814973722] [2020-08-18 17:41:34,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:41:34,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:34,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:41:34,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:41:34,500 INFO L87 Difference]: Start difference. First operand 310 states and 356 transitions. Second operand 10 states. [2020-08-18 17:41:35,087 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:36,144 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:36,362 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:36,606 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:36,867 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:37,815 INFO L93 Difference]: Finished difference Result 706 states and 881 transitions. [2020-08-18 17:41:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 17:41:37,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 17:41:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:37,820 INFO L225 Difference]: With dead ends: 706 [2020-08-18 17:41:37,820 INFO L226 Difference]: Without dead ends: 424 [2020-08-18 17:41:37,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-18 17:41:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-18 17:41:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 309. [2020-08-18 17:41:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-18 17:41:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 353 transitions. [2020-08-18 17:41:37,889 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 353 transitions. Word has length 83 [2020-08-18 17:41:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:37,890 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 353 transitions. [2020-08-18 17:41:37,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:41:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 353 transitions. [2020-08-18 17:41:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 17:41:37,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:37,892 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 17:41:37,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:41:37,893 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:37,893 INFO L82 PathProgramCache]: Analyzing trace with hash -226819900, now seen corresponding path program 1 times [2020-08-18 17:41:37,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:37,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682136149] [2020-08-18 17:41:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,139 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:38,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:41:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:41:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 17:41:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 17:41:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:38,272 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 17:41:38,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682136149] [2020-08-18 17:41:38,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:38,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:41:38,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250367676] [2020-08-18 17:41:38,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:41:38,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:38,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:41:38,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:41:38,275 INFO L87 Difference]: Start difference. First operand 309 states and 353 transitions. Second operand 12 states. [2020-08-18 17:41:38,699 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:38,944 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:39,170 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:39,876 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:40,140 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:40,397 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:41,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:41,217 INFO L93 Difference]: Finished difference Result 713 states and 897 transitions. [2020-08-18 17:41:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:41:41,225 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 17:41:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:41,231 INFO L225 Difference]: With dead ends: 713 [2020-08-18 17:41:41,231 INFO L226 Difference]: Without dead ends: 432 [2020-08-18 17:41:41,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 17:41:41,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-08-18 17:41:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 317. [2020-08-18 17:41:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-18 17:41:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 361 transitions. [2020-08-18 17:41:41,313 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 361 transitions. Word has length 84 [2020-08-18 17:41:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:41,314 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 361 transitions. [2020-08-18 17:41:41,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:41:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 361 transitions. [2020-08-18 17:41:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 17:41:41,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:41,316 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 17:41:41,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:41:41,316 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:41,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1613023294, now seen corresponding path program 1 times [2020-08-18 17:41:41,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:41,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953393944] [2020-08-18 17:41:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,594 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:41,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:41:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:41:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 17:41:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 17:41:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:41,735 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 17:41:41,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953393944] [2020-08-18 17:41:41,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:41,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 17:41:41,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340757807] [2020-08-18 17:41:41,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:41:41,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:41,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:41:41,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:41:41,737 INFO L87 Difference]: Start difference. First operand 317 states and 361 transitions. Second operand 10 states. [2020-08-18 17:41:42,671 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:41:42,939 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:41:43,195 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:43,444 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:41:44,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:44,297 INFO L93 Difference]: Finished difference Result 715 states and 895 transitions. [2020-08-18 17:41:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:41:44,298 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-18 17:41:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:44,302 INFO L225 Difference]: With dead ends: 715 [2020-08-18 17:41:44,302 INFO L226 Difference]: Without dead ends: 426 [2020-08-18 17:41:44,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:41:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-08-18 17:41:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 317. [2020-08-18 17:41:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-08-18 17:41:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 359 transitions. [2020-08-18 17:41:44,395 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 359 transitions. Word has length 84 [2020-08-18 17:41:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:44,400 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 359 transitions. [2020-08-18 17:41:44,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:41:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 359 transitions. [2020-08-18 17:41:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 17:41:44,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:44,405 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 17:41:44,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:41:44,406 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:44,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1884470469, now seen corresponding path program 1 times [2020-08-18 17:41:44,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:44,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054254926] [2020-08-18 17:41:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,713 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:44,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 17:41:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:41:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 17:41:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 17:41:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:44,887 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 17:41:44,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054254926] [2020-08-18 17:41:44,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:44,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:41:44,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406075967] [2020-08-18 17:41:44,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:41:44,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:44,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:41:44,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:41:44,890 INFO L87 Difference]: Start difference. First operand 317 states and 359 transitions. Second operand 8 states. [2020-08-18 17:41:45,307 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:45,911 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:48,066 INFO L93 Difference]: Finished difference Result 1041 states and 1362 transitions. [2020-08-18 17:41:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 17:41:48,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 17:41:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:48,073 INFO L225 Difference]: With dead ends: 1041 [2020-08-18 17:41:48,073 INFO L226 Difference]: Without dead ends: 752 [2020-08-18 17:41:48,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-18 17:41:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-08-18 17:41:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 607. [2020-08-18 17:41:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-08-18 17:41:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 711 transitions. [2020-08-18 17:41:48,217 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 711 transitions. Word has length 84 [2020-08-18 17:41:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:48,218 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 711 transitions. [2020-08-18 17:41:48,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:41:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 711 transitions. [2020-08-18 17:41:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 17:41:48,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:48,220 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 17:41:48,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:41:48,220 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:48,220 INFO L82 PathProgramCache]: Analyzing trace with hash 713728159, now seen corresponding path program 1 times [2020-08-18 17:41:48,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:48,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034842958] [2020-08-18 17:41:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,459 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:41:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:41:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:41:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:41:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:41:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:41:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:41:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:41:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:41:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 17:41:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:41:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:41:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:41:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 17:41:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 17:41:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:41:48,573 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 17:41:48,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034842958] [2020-08-18 17:41:48,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:41:48,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:41:48,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864336248] [2020-08-18 17:41:48,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:41:48,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:41:48,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:41:48,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:41:48,576 INFO L87 Difference]: Start difference. First operand 607 states and 711 transitions. Second operand 8 states. [2020-08-18 17:41:48,941 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:41:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:41:50,745 INFO L93 Difference]: Finished difference Result 1199 states and 1560 transitions. [2020-08-18 17:41:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 17:41:50,746 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-18 17:41:50,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:41:50,754 INFO L225 Difference]: With dead ends: 1199 [2020-08-18 17:41:50,754 INFO L226 Difference]: Without dead ends: 1196 [2020-08-18 17:41:50,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-18 17:41:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2020-08-18 17:41:50,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 975. [2020-08-18 17:41:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-08-18 17:41:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1150 transitions. [2020-08-18 17:41:50,937 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1150 transitions. Word has length 88 [2020-08-18 17:41:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:41:50,938 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1150 transitions. [2020-08-18 17:41:50,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:41:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1150 transitions. [2020-08-18 17:41:50,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 17:41:50,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:41:50,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:41:50,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:41:50,941 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:41:50,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:41:50,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1128183326, now seen corresponding path program 1 times [2020-08-18 17:41:50,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:41:50,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198908860] [2020-08-18 17:41:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:41:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:41:50,996 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:41:50,996 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:41:51,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 17:41:51,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:41:51 BoogieIcfgContainer [2020-08-18 17:41:51,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:41:51,029 INFO L168 Benchmark]: Toolchain (without parser) took 35173.23 ms. Allocated memory was 138.9 MB in the beginning and 644.9 MB in the end (delta: 505.9 MB). Free memory was 101.0 MB in the beginning and 358.4 MB in the end (delta: -257.4 MB). Peak memory consumption was 248.5 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:51,030 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 17:41:51,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.83 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 169.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:51,031 INFO L168 Benchmark]: Boogie Preprocessor took 93.76 ms. Allocated memory is still 201.9 MB. Free memory was 169.3 MB in the beginning and 165.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:51,032 INFO L168 Benchmark]: RCFGBuilder took 1166.09 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 165.3 MB in the beginning and 195.5 MB in the end (delta: -30.2 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:51,033 INFO L168 Benchmark]: TraceAbstraction took 33257.88 ms. Allocated memory was 233.8 MB in the beginning and 644.9 MB in the end (delta: 411.0 MB). Free memory was 195.5 MB in the beginning and 358.4 MB in the end (delta: -162.9 MB). Peak memory consumption was 248.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:41:51,036 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.83 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 169.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.76 ms. Allocated memory is still 201.9 MB. Free memory was 169.3 MB in the beginning and 165.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1166.09 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 165.3 MB in the beginning and 195.5 MB in the end (delta: -30.2 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33257.88 ms. Allocated memory was 233.8 MB in the beginning and 644.9 MB in the end (delta: 411.0 MB). Free memory was 195.5 MB in the beginning and 358.4 MB in the end (delta: -162.9 MB). Peak memory consumption was 248.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 249]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L255] int methAndRunningLastTime ; [L498] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int pumpRunning = 0; [L766] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L320] int retValue_acc ; [L323] retValue_acc = 1 [L324] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L113] CALL __utac_acc__Specification2_spec__1() [L260] methAndRunningLastTime = 0 [L113] RET __utac_acc__Specification2_spec__1() [L114] CALL test() [L697] int splverifierCounter ; [L698] int tmp ; [L699] int tmp___0 ; [L700] int tmp___1 ; [L701] int tmp___2 ; [L704] splverifierCounter = 0 [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp) [L718] CALL waterRise() [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 [L718] RET waterRise() [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___0) [L728] CALL changeMethaneLevel() [L181] COND FALSE !(\read(methaneLevelCritical)) [L184] methaneLevelCritical = 1 [L728] RET changeMethaneLevel() [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND FALSE !(\read(pumpRunning)) [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND TRUE ! pumpRunning [L806] CALL, EXPR isHighWaterLevel() [L898] int retValue_acc ; [L899] int tmp ; [L900] int tmp___0 ; [L904] CALL, EXPR isHighWaterSensorDry() [L231] int retValue_acc ; [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); [L904] RET, EXPR isHighWaterSensorDry() [L904] tmp = isHighWaterSensorDry() [L906] COND FALSE !(\read(tmp)) [L909] tmp___0 = 1 [L911] retValue_acc = tmp___0 [L912] return (retValue_acc); [L806] RET, EXPR isHighWaterLevel() [L806] tmp = isHighWaterLevel() [L808] COND TRUE \read(tmp) [L810] CALL activatePump() [L829] pumpRunning = 1 [L810] RET activatePump() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND FALSE !(\read(methAndRunningLastTime)) [L282] methAndRunningLastTime = 1 [L787] RET __utac_acc__Specification2_spec__2() [L751] RET timeShift() [L706] COND TRUE 1 [L708] COND TRUE splverifierCounter < 4 [L714] tmp = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp)) [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp___0)) [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) [L751] CALL timeShift() [L772] COND TRUE \read(pumpRunning) [L774] CALL lowerWaterLevel() [L157] COND TRUE waterLevel > 0 [L158] waterLevel = waterLevel - 1 [L774] RET lowerWaterLevel() [L779] COND TRUE \read(systemActive) [L781] CALL processEnvironment() [L801] int tmp ; [L804] COND FALSE !(! pumpRunning) [L819] FCALL processEnvironment__wrappee__base() [L781] RET processEnvironment() [L787] CALL __utac_acc__Specification2_spec__2() [L265] int tmp ; [L266] int tmp___0 ; [L270] CALL, EXPR isMethaneLevelCritical() [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L270] RET, EXPR isMethaneLevelCritical() [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) [L274] CALL, EXPR isPumpRunning() [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); [L274] RET, EXPR isPumpRunning() [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) [L277] COND TRUE \read(methAndRunningLastTime) [L279] CALL __automaton_fail() [L249] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.1s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 26.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1105 SDtfs, 3134 SDslu, 1465 SDs, 0 SdLazy, 6113 SolverSat, 2323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=975occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 964 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 795 ConstructedInterpolants, 0 QuantifiedInterpolants, 249077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...