/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:17:25,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:17:25,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:17:25,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:17:25,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:17:25,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:17:25,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:17:25,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:17:25,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:17:25,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:17:25,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:17:25,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:17:25,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:17:25,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:17:25,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:17:25,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:17:25,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:17:25,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:17:25,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:17:25,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:17:25,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:17:25,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:17:25,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:17:25,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:17:25,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:17:25,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:17:25,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:17:25,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:17:25,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:17:25,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:17:25,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:17:25,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:17:25,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:17:25,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:17:25,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:17:25,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:17:25,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:17:25,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:17:25,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:17:25,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:17:25,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:17:25,565 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 23:17:25,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:17:25,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:17:25,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:17:25,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:17:25,590 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:17:25,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:17:25,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:17:25,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:17:25,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:17:25,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:17:25,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:17:25,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:17:25,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:17:25,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:17:25,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:17:25,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:17:25,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:17:25,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:17:25,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:17:25,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:17:25,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:17:25,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:17:25,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:17:25,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:17:25,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:17:25,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:17:25,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:17:25,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:17:25,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:17:25,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:17:25,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:17:25,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:17:25,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:17:25,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:17:25,918 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:17:25,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-18 23:17:25,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac17dc7bf/8ca70515d492432da52c91e5d59b8916/FLAG9fde3b10d [2020-08-18 23:17:26,553 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:17:26,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-18 23:17:26,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac17dc7bf/8ca70515d492432da52c91e5d59b8916/FLAG9fde3b10d [2020-08-18 23:17:26,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac17dc7bf/8ca70515d492432da52c91e5d59b8916 [2020-08-18 23:17:26,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:17:26,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:17:26,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:17:26,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:17:26,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:17:26,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:26" (1/1) ... [2020-08-18 23:17:26,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4207e6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:26, skipping insertion in model container [2020-08-18 23:17:26,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:17:26" (1/1) ... [2020-08-18 23:17:26,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:17:26,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:17:27,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:17:27,335 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:17:27,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:17:27,459 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:17:27,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27 WrapperNode [2020-08-18 23:17:27,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:17:27,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:17:27,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:17:27,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:17:27,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (1/1) ... [2020-08-18 23:17:27,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:17:27,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:17:27,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:17:27,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:17:27,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (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 23:17:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:17:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:17:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:17:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:17:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:17:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:17:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:17:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:17:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:17:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:17:27,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:17:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:17:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:17:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:17:27,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:17:27,632 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:17:27,632 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:17:27,632 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:17:27,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:17:27,633 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:17:27,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:17:27,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:17:27,633 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:17:27,634 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:17:27,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:17:27,635 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:17:27,635 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:17:27,635 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:17:27,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:17:27,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:17:27,636 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:17:27,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:17:27,636 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 23:17:27,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 23:17:27,636 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:17:27,636 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:17:27,637 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:17:27,637 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:17:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:17:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:17:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:17:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:17:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:17:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:17:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:17:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:17:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:17:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:17:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:17:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:17:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:17:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:17:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:17:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:17:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:17:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:17:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:17:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:17:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:17:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:17:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:17:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:17:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:17:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:17:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:17:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:17:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:17:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:17:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:17:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:17:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:17:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:17:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:17:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:17:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:17:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:17:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:17:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 23:17:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:17:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:17:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:17:27,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 23:17:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:17:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:17:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:17:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:17:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:17:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:17:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:17:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:17:28,760 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:17:28,760 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:17:28,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:28 BoogieIcfgContainer [2020-08-18 23:17:28,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:17:28,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:17:28,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:17:28,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:17:28,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:17:26" (1/3) ... [2020-08-18 23:17:28,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cff0537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:28, skipping insertion in model container [2020-08-18 23:17:28,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:17:27" (2/3) ... [2020-08-18 23:17:28,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cff0537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:17:28, skipping insertion in model container [2020-08-18 23:17:28,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:17:28" (3/3) ... [2020-08-18 23:17:28,780 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-18 23:17:28,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:17:28,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:17:28,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:17:28,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:17:28,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:17:28,836 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:17:28,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:17:28,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:17:28,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:17:28,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:17:28,837 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:17:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-18 23:17:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 23:17:28,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:28,869 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] [2020-08-18 23:17:28,870 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:28,875 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-18 23:17:28,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:28,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076830340] [2020-08-18 23:17:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:29,573 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:29,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:29,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:29,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:29,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:17:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:17:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:29,734 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 23:17:29,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076830340] [2020-08-18 23:17:29,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:29,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:17:29,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632877547] [2020-08-18 23:17:29,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:17:29,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:29,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:17:29,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:17:29,772 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-18 23:17:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:30,809 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-18 23:17:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:17:30,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 23:17:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:30,830 INFO L225 Difference]: With dead ends: 258 [2020-08-18 23:17:30,831 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 23:17:30,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:17:30,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 23:17:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-18 23:17:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 23:17:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-18 23:17:30,929 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-18 23:17:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:30,930 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-18 23:17:30,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:17:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-18 23:17:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 23:17:30,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:30,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:17:30,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:17:30,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-18 23:17:30,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:30,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790843678] [2020-08-18 23:17:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:31,279 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:31,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:31,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:31,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:17:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:31,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:17:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:31,348 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 23:17:31,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790843678] [2020-08-18 23:17:31,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:31,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:17:31,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616202575] [2020-08-18 23:17:31,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:17:31,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:31,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:17:31,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:17:31,352 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-18 23:17:31,789 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:32,445 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-18 23:17:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:17:32,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 23:17:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:32,449 INFO L225 Difference]: With dead ends: 187 [2020-08-18 23:17:32,449 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 23:17:32,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:17:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 23:17:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 23:17:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 23:17:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 23:17:32,482 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-18 23:17:32,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:32,483 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 23:17:32,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:17:32,483 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 23:17:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:17:32,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:32,485 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 23:17:32,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:17:32,486 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:32,486 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-18 23:17:32,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:32,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630135749] [2020-08-18 23:17:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,795 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:17:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:17:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:32,869 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 23:17:32,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630135749] [2020-08-18 23:17:32,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:32,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:17:32,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062098659] [2020-08-18 23:17:32,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:17:32,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:32,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:17:32,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:17:32,872 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-18 23:17:33,267 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:33,581 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:33,826 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:34,082 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:34,979 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-18 23:17:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:17:34,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 23:17:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:34,982 INFO L225 Difference]: With dead ends: 200 [2020-08-18 23:17:34,982 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 23:17:34,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:17:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 23:17:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 23:17:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 23:17:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-18 23:17:35,013 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-18 23:17:35,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:35,014 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-18 23:17:35,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:17:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-18 23:17:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 23:17:35,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:35,017 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] [2020-08-18 23:17:35,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:17:35,017 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:35,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-18 23:17:35,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:35,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280648802] [2020-08-18 23:17:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,275 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:35,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:17:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 23:17:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 23:17:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:35,373 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 23:17:35,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280648802] [2020-08-18 23:17:35,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:35,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:17:35,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400736995] [2020-08-18 23:17:35,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:17:35,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:35,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:17:35,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:17:35,377 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-18 23:17:35,697 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:36,793 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:37,279 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-18 23:17:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:17:37,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 23:17:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:37,285 INFO L225 Difference]: With dead ends: 288 [2020-08-18 23:17:37,285 INFO L226 Difference]: Without dead ends: 212 [2020-08-18 23:17:37,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:17:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-18 23:17:37,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-18 23:17:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 23:17:37,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-18 23:17:37,331 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-18 23:17:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:37,331 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-18 23:17:37,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:17:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-18 23:17:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 23:17:37,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:37,333 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] [2020-08-18 23:17:37,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:17:37,334 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-18 23:17:37,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:37,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811160848] [2020-08-18 23:17:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,675 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:37,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:17:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:17:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:17:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 23:17:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 23:17:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:37,798 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 23:17:37,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811160848] [2020-08-18 23:17:37,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:37,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:17:37,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574272815] [2020-08-18 23:17:37,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:17:37,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:37,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:17:37,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:17:37,803 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-18 23:17:38,162 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:39,210 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:39,479 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:39,732 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:39,990 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:40,279 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:40,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:40,932 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-18 23:17:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:17:40,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-18 23:17:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:40,938 INFO L225 Difference]: With dead ends: 505 [2020-08-18 23:17:40,938 INFO L226 Difference]: Without dead ends: 360 [2020-08-18 23:17:40,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:17:40,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-18 23:17:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-18 23:17:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 23:17:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-18 23:17:41,016 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-18 23:17:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:41,016 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-18 23:17:41,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:17:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-18 23:17:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 23:17:41,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:41,019 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] [2020-08-18 23:17:41,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:17:41,019 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:41,020 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-18 23:17:41,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:41,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81701594] [2020-08-18 23:17:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,293 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:17:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:17:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:17:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:17:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 23:17:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:17:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:41,422 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 23:17:41,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81701594] [2020-08-18 23:17:41,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:41,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:17:41,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195607605] [2020-08-18 23:17:41,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:17:41,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:41,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:17:41,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:17:41,427 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-18 23:17:41,845 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:42,852 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:43,087 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:43,360 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:43,620 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:43,854 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:44,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:44,459 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-18 23:17:44,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 23:17:44,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 23:17:44,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:44,464 INFO L225 Difference]: With dead ends: 402 [2020-08-18 23:17:44,465 INFO L226 Difference]: Without dead ends: 399 [2020-08-18 23:17:44,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:17:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-18 23:17:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-18 23:17:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 23:17:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-18 23:17:44,547 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-18 23:17:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:44,547 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-18 23:17:44,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:17:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-18 23:17:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 23:17:44,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:44,550 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 23:17:44,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:17:44,551 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-18 23:17:44,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:44,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422094509] [2020-08-18 23:17:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,813 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:17:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:17:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:17:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:17:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 23:17:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:17:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:44,938 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 23:17:44,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422094509] [2020-08-18 23:17:44,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:44,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:17:44,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739012020] [2020-08-18 23:17:44,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:17:44,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:44,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:17:44,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:17:44,946 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-18 23:17:45,809 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:17:46,042 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:17:46,279 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:46,531 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:47,356 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-18 23:17:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:17:47,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 23:17:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:47,367 INFO L225 Difference]: With dead ends: 672 [2020-08-18 23:17:47,367 INFO L226 Difference]: Without dead ends: 403 [2020-08-18 23:17:47,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:17:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-18 23:17:47,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-18 23:17:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-18 23:17:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-18 23:17:47,428 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-18 23:17:47,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:47,428 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-18 23:17:47,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:17:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-18 23:17:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 23:17:47,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:47,430 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 23:17:47,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:17:47,430 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:47,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-18 23:17:47,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:47,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451990540] [2020-08-18 23:17:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,695 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:47,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:17:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:17:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:17:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:17:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 23:17:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:17:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:47,798 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 23:17:47,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451990540] [2020-08-18 23:17:47,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:47,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 23:17:47,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592045255] [2020-08-18 23:17:47,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:17:47,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:47,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:17:47,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:17:47,801 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-18 23:17:48,344 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:48,573 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:48,791 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:49,379 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:49,615 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:49,856 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:17:50,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:50,753 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-18 23:17:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:17:50,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-18 23:17:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:50,758 INFO L225 Difference]: With dead ends: 696 [2020-08-18 23:17:50,758 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 23:17:50,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:17:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 23:17:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-18 23:17:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-18 23:17:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-18 23:17:50,820 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-18 23:17:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:50,821 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-18 23:17:50,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:17:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-18 23:17:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 23:17:50,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:50,823 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 23:17:50,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:17:50,823 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:50,824 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-18 23:17:50,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:50,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170349687] [2020-08-18 23:17:50,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,058 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:17:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:17:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:17:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:17:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:17:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:17:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:17:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:17:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:17:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:17:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:17:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 23:17:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 23:17:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:17:51,168 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 23:17:51,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170349687] [2020-08-18 23:17:51,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:17:51,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 23:17:51,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633988381] [2020-08-18 23:17:51,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:17:51,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:17:51,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:17:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:17:51,170 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-18 23:17:51,544 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:52,046 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:17:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:17:53,864 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-18 23:17:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 23:17:53,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-18 23:17:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:17:53,871 INFO L225 Difference]: With dead ends: 1018 [2020-08-18 23:17:53,871 INFO L226 Difference]: Without dead ends: 731 [2020-08-18 23:17:53,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:17:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-18 23:17:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-18 23:17:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-18 23:17:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-18 23:17:54,006 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-18 23:17:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:17:54,006 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-18 23:17:54,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:17:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-18 23:17:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 23:17:54,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:17:54,008 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 23:17:54,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:17:54,009 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:17:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:17:54,009 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-18 23:17:54,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:17:54,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979370054] [2020-08-18 23:17:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:17:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 23:17:54,067 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 23:17:54,067 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:17:54,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:17:54,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:17:54 BoogieIcfgContainer [2020-08-18 23:17:54,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:17:54,100 INFO L168 Benchmark]: Toolchain (without parser) took 27280.38 ms. Allocated memory was 140.5 MB in the beginning and 608.7 MB in the end (delta: 468.2 MB). Free memory was 103.2 MB in the beginning and 421.4 MB in the end (delta: -318.2 MB). Peak memory consumption was 150.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:54,101 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 23:17:54,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.60 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 171.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:54,102 INFO L168 Benchmark]: Boogie Preprocessor took 89.53 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 167.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:54,103 INFO L168 Benchmark]: RCFGBuilder took 1219.77 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.1 MB in the beginning and 197.0 MB in the end (delta: -29.9 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:54,104 INFO L168 Benchmark]: TraceAbstraction took 25326.22 ms. Allocated memory was 235.9 MB in the beginning and 608.7 MB in the end (delta: 372.8 MB). Free memory was 197.0 MB in the beginning and 421.4 MB in the end (delta: -224.4 MB). Peak memory consumption was 148.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:17:54,109 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 638.60 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 171.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.53 ms. Allocated memory is still 203.4 MB. Free memory was 171.4 MB in the beginning and 167.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1219.77 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 167.1 MB in the beginning and 197.0 MB in the end (delta: -29.9 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25326.22 ms. Allocated memory was 235.9 MB in the beginning and 608.7 MB in the end (delta: 372.8 MB). Free memory was 197.0 MB in the beginning and 421.4 MB in the end (delta: -224.4 MB). Peak memory consumption was 148.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 1722 SDslu, 880 SDs, 0 SdLazy, 4206 SolverSat, 1159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...