/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:54:03,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:54:03,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:54:03,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:54:03,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:54:03,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:54:03,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:54:03,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:54:03,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:54:03,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:54:03,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:54:03,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:54:03,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:54:03,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:54:03,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:54:03,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:54:03,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:54:03,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:54:03,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:54:03,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:54:03,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:54:03,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:54:03,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:54:03,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:54:03,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:54:03,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:54:03,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:54:03,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:54:03,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:54:03,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:54:03,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:54:03,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:54:03,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:54:03,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:54:03,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:54:03,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:54:03,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:54:03,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:54:03,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:54:03,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:54:03,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:54:03,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:54:03,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:54:03,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:54:03,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:54:03,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:54:03,678 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:54:03,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:54:03,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:54:03,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:54:03,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:54:03,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:54:03,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:54:03,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:54:03,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:54:03,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:54:03,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:54:03,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:54:03,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:54:03,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:54:03,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:54:03,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:54:03,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:54:03,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:54:03,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:54:03,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:54:03,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:54:03,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:54:03,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:54:03,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:54:03,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:54:03,685 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 -> log-additional-information=true; [2020-08-21 13:54:04,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:54:04,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:54:04,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:54:04,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:54:04,040 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:54:04,041 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-21 13:54:04,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00bb92c06/c9949ebf36b0424db8169f4612f26b83/FLAGe0cf5e1fe [2020-08-21 13:54:04,694 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:54:04,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-21 13:54:04,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00bb92c06/c9949ebf36b0424db8169f4612f26b83/FLAGe0cf5e1fe [2020-08-21 13:54:04,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00bb92c06/c9949ebf36b0424db8169f4612f26b83 [2020-08-21 13:54:04,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:54:04,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:54:04,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:54:04,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:54:04,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:54:04,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:54:04" (1/1) ... [2020-08-21 13:54:04,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c78ef90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:04, skipping insertion in model container [2020-08-21 13:54:04,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:54:04" (1/1) ... [2020-08-21 13:54:05,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:54:05,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:54:05,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:54:05,406 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:54:05,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:54:05,644 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:54:05,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05 WrapperNode [2020-08-21 13:54:05,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:54:05,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:54:05,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:54:05,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:54:05,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (1/1) ... [2020-08-21 13:54:05,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (1/1) ... [2020-08-21 13:54:05,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (1/1) ... [2020-08-21 13:54:05,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (1/1) ... [2020-08-21 13:54:05,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (1/1) ... [2020-08-21 13:54:05,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (1/1) ... [2020-08-21 13:54:05,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (1/1) ... [2020-08-21 13:54:05,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:54:05,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:54:05,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:54:05,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:54:05,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:54:05,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:54:05,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:54:05,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:54:05,838 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:54:05,839 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:54:05,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-21 13:54:05,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-21 13:54:05,840 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-21 13:54:05,840 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-21 13:54:05,840 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-21 13:54:05,841 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-21 13:54:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:54:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-21 13:54:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-21 13:54:05,842 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:54:05,843 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:54:05,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:54:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:54:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:54:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:54:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:54:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 13:54:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:54:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:54:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:54:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:54:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:54:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:54:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:54:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:54:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:54:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:54:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:54:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:54:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:54:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:54:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:54:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:54:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:54:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:54:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:54:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:54:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:54:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:54:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:54:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:54:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:54:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:54:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:54:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:54:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:54:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:54:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:54:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:54:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 13:54:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:54:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:54:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:54:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:54:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:54:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:54:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:54:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:54:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:54:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:54:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:54:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:54:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:54:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:54:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-21 13:54:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:54:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-21 13:54:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-21 13:54:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:54:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-21 13:54:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-21 13:54:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:54:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-21 13:54:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-21 13:54:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-21 13:54:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:54:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:54:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:54:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:54:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:54:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:54:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:54:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:54:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:54:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:54:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:54:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:54:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:54:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:54:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:54:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:54:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:54:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:54:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:54:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:54:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:54:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:54:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:54:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:54:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:54:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:54:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:54:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:54:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:54:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:54:07,185 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:54:07,185 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:54:07,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:54:07 BoogieIcfgContainer [2020-08-21 13:54:07,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:54:07,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:54:07,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:54:07,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:54:07,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:54:04" (1/3) ... [2020-08-21 13:54:07,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad15c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:54:07, skipping insertion in model container [2020-08-21 13:54:07,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:54:05" (2/3) ... [2020-08-21 13:54:07,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad15c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:54:07, skipping insertion in model container [2020-08-21 13:54:07,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:54:07" (3/3) ... [2020-08-21 13:54:07,206 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_productSimulator.cil.c [2020-08-21 13:54:07,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:54:07,229 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:54:07,243 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:54:07,276 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:54:07,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:54:07,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:54:07,277 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:54:07,277 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:54:07,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:54:07,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:54:07,281 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:54:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-21 13:54:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 13:54:07,332 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:07,334 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:07,335 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash -777436733, now seen corresponding path program 1 times [2020-08-21 13:54:07,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:07,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430275981] [2020-08-21 13:54:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,179 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 13:54:08,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:54:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:54:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:54:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:54:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:54:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:54:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 13:54:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:54:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 13:54:08,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430275981] [2020-08-21 13:54:08,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:08,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:54:08,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932089827] [2020-08-21 13:54:08,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:54:08,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:08,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:54:08,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:54:08,373 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2020-08-21 13:54:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:10,566 INFO L93 Difference]: Finished difference Result 436 states and 577 transitions. [2020-08-21 13:54:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 13:54:10,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-21 13:54:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:10,585 INFO L225 Difference]: With dead ends: 436 [2020-08-21 13:54:10,585 INFO L226 Difference]: Without dead ends: 248 [2020-08-21 13:54:10,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:54:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-21 13:54:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 199. [2020-08-21 13:54:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-21 13:54:10,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-08-21 13:54:10,710 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 78 [2020-08-21 13:54:10,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:10,710 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-08-21 13:54:10,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:54:10,711 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2020-08-21 13:54:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:54:10,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:10,716 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:10,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:54:10,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:10,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1216022007, now seen corresponding path program 1 times [2020-08-21 13:54:10,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:10,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836533004] [2020-08-21 13:54:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,132 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 13:54:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:54:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:54:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:54:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:54:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:54:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:54:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:54:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:54:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 13:54:11,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836533004] [2020-08-21 13:54:11,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:11,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:54:11,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471231684] [2020-08-21 13:54:11,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:54:11,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:11,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:54:11,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:54:11,237 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand 6 states. [2020-08-21 13:54:11,970 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 13:54:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:13,713 INFO L93 Difference]: Finished difference Result 360 states and 455 transitions. [2020-08-21 13:54:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:54:13,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-21 13:54:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:13,720 INFO L225 Difference]: With dead ends: 360 [2020-08-21 13:54:13,724 INFO L226 Difference]: Without dead ends: 232 [2020-08-21 13:54:13,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:54:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-08-21 13:54:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 190. [2020-08-21 13:54:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-21 13:54:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2020-08-21 13:54:13,774 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 79 [2020-08-21 13:54:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:13,774 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2020-08-21 13:54:13,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:54:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2020-08-21 13:54:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 13:54:13,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:13,778 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:13,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:54:13,779 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2141579182, now seen corresponding path program 1 times [2020-08-21 13:54:13,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:13,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644866732] [2020-08-21 13:54:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,268 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 13:54:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:54:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:54:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:54:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:54:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:54:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:54:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:54:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:54:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 13:54:14,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644866732] [2020-08-21 13:54:14,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:14,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:54:14,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383289332] [2020-08-21 13:54:14,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:54:14,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:14,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:54:14,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:54:14,464 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand 12 states. [2020-08-21 13:54:15,091 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:15,779 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-21 13:54:16,563 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-21 13:54:17,617 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:18,014 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 13:54:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:21,722 INFO L93 Difference]: Finished difference Result 619 states and 790 transitions. [2020-08-21 13:54:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 13:54:21,723 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 13:54:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:21,729 INFO L225 Difference]: With dead ends: 619 [2020-08-21 13:54:21,730 INFO L226 Difference]: Without dead ends: 470 [2020-08-21 13:54:21,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-21 13:54:21,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-08-21 13:54:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 379. [2020-08-21 13:54:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 13:54:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 476 transitions. [2020-08-21 13:54:21,836 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 476 transitions. Word has length 84 [2020-08-21 13:54:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:21,837 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 476 transitions. [2020-08-21 13:54:21,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:54:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 476 transitions. [2020-08-21 13:54:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 13:54:21,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:21,840 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:21,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:54:21,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:21,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:21,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1535963779, now seen corresponding path program 1 times [2020-08-21 13:54:21,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:21,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129035056] [2020-08-21 13:54:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,154 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 13:54:22,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:54:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:54:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:54:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:54:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:54:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:54:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 13:54:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:54:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 13:54:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 13:54:22,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129035056] [2020-08-21 13:54:22,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:22,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:54:22,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333929292] [2020-08-21 13:54:22,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:54:22,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:22,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:54:22,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:54:22,310 INFO L87 Difference]: Start difference. First operand 379 states and 476 transitions. Second operand 10 states. [2020-08-21 13:54:22,887 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:24,568 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:25,114 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:25,394 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:25,768 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:26,374 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 13:54:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:28,771 INFO L93 Difference]: Finished difference Result 1218 states and 1607 transitions. [2020-08-21 13:54:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 13:54:28,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 13:54:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:28,781 INFO L225 Difference]: With dead ends: 1218 [2020-08-21 13:54:28,781 INFO L226 Difference]: Without dead ends: 880 [2020-08-21 13:54:28,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-08-21 13:54:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-21 13:54:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 696. [2020-08-21 13:54:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-21 13:54:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 880 transitions. [2020-08-21 13:54:28,986 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 880 transitions. Word has length 90 [2020-08-21 13:54:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:28,987 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 880 transitions. [2020-08-21 13:54:28,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:54:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 880 transitions. [2020-08-21 13:54:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 13:54:28,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:28,991 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:28,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:54:28,992 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:28,992 INFO L82 PathProgramCache]: Analyzing trace with hash -859073223, now seen corresponding path program 1 times [2020-08-21 13:54:28,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:28,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516589772] [2020-08-21 13:54:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,319 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 13:54:29,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:54:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:54:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:54:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:54:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:54:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:54:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 13:54:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:54:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:54:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 13:54:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 13:54:29,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516589772] [2020-08-21 13:54:29,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:29,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:54:29,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40755591] [2020-08-21 13:54:29,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:54:29,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:29,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:54:29,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:54:29,491 INFO L87 Difference]: Start difference. First operand 696 states and 880 transitions. Second operand 11 states. [2020-08-21 13:54:30,023 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:31,697 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:32,045 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:32,344 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:33,288 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:33,621 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 13:54:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:35,900 INFO L93 Difference]: Finished difference Result 1972 states and 2746 transitions. [2020-08-21 13:54:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:54:35,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-21 13:54:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:35,913 INFO L225 Difference]: With dead ends: 1972 [2020-08-21 13:54:35,913 INFO L226 Difference]: Without dead ends: 1317 [2020-08-21 13:54:35,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-08-21 13:54:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-21 13:54:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1112. [2020-08-21 13:54:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2020-08-21 13:54:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1445 transitions. [2020-08-21 13:54:36,248 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1445 transitions. Word has length 94 [2020-08-21 13:54:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:36,249 INFO L479 AbstractCegarLoop]: Abstraction has 1112 states and 1445 transitions. [2020-08-21 13:54:36,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:54:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1445 transitions. [2020-08-21 13:54:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-21 13:54:36,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:36,255 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:36,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:54:36,255 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1170559539, now seen corresponding path program 1 times [2020-08-21 13:54:36,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:36,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249199122] [2020-08-21 13:54:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,629 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 13:54:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:54:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:54:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:54:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:54:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:54:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:54:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 13:54:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 13:54:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 13:54:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 13:54:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 13:54:36,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249199122] [2020-08-21 13:54:36,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:36,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:54:36,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575030322] [2020-08-21 13:54:36,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:54:36,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:36,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:54:36,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:54:36,889 INFO L87 Difference]: Start difference. First operand 1112 states and 1445 transitions. Second operand 11 states. [2020-08-21 13:54:38,903 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:39,247 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 13:54:39,568 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 13:54:39,900 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 13:54:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:41,817 INFO L93 Difference]: Finished difference Result 2484 states and 3550 transitions. [2020-08-21 13:54:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 13:54:41,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 127 [2020-08-21 13:54:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:41,832 INFO L225 Difference]: With dead ends: 2484 [2020-08-21 13:54:41,832 INFO L226 Difference]: Without dead ends: 1413 [2020-08-21 13:54:41,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:54:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-08-21 13:54:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1138. [2020-08-21 13:54:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-08-21 13:54:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1473 transitions. [2020-08-21 13:54:42,123 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1473 transitions. Word has length 127 [2020-08-21 13:54:42,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:42,125 INFO L479 AbstractCegarLoop]: Abstraction has 1138 states and 1473 transitions. [2020-08-21 13:54:42,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:54:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1473 transitions. [2020-08-21 13:54:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-21 13:54:42,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:42,130 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:42,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:54:42,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:42,131 INFO L82 PathProgramCache]: Analyzing trace with hash 141200241, now seen corresponding path program 1 times [2020-08-21 13:54:42,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:42,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784163667] [2020-08-21 13:54:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,458 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 13:54:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:54:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:54:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:54:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:54:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:54:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:54:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 13:54:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 13:54:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 13:54:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 13:54:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 13:54:42,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784163667] [2020-08-21 13:54:42,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:42,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 13:54:42,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797688884] [2020-08-21 13:54:42,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:54:42,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:42,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:54:42,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:54:42,733 INFO L87 Difference]: Start difference. First operand 1138 states and 1473 transitions. Second operand 14 states. [2020-08-21 13:54:43,626 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:44,155 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:45,365 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:45,707 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:46,038 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 13:54:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:48,244 INFO L93 Difference]: Finished difference Result 2530 states and 3598 transitions. [2020-08-21 13:54:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 13:54:48,245 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2020-08-21 13:54:48,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:48,256 INFO L225 Difference]: With dead ends: 2530 [2020-08-21 13:54:48,256 INFO L226 Difference]: Without dead ends: 1433 [2020-08-21 13:54:48,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-08-21 13:54:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-08-21 13:54:48,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1154. [2020-08-21 13:54:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2020-08-21 13:54:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1489 transitions. [2020-08-21 13:54:48,586 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1489 transitions. Word has length 127 [2020-08-21 13:54:48,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:48,586 INFO L479 AbstractCegarLoop]: Abstraction has 1154 states and 1489 transitions. [2020-08-21 13:54:48,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 13:54:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1489 transitions. [2020-08-21 13:54:48,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-21 13:54:48,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:48,591 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:48,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:54:48,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:48,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:48,593 INFO L82 PathProgramCache]: Analyzing trace with hash 265273488, now seen corresponding path program 1 times [2020-08-21 13:54:48,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:48,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972486711] [2020-08-21 13:54:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:48,940 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 13:54:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:54:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:54:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:54:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 13:54:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:54:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:54:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:54:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:54:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 13:54:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 13:54:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:54:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:54:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:54:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 13:54:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 13:54:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:54:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 13:54:49,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972486711] [2020-08-21 13:54:49,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:54:49,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:54:49,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667802980] [2020-08-21 13:54:49,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:54:49,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:54:49,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:54:49,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:54:49,168 INFO L87 Difference]: Start difference. First operand 1154 states and 1489 transitions. Second operand 9 states. [2020-08-21 13:54:49,713 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:50,460 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 13:54:54,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:54:54,967 INFO L93 Difference]: Finished difference Result 3666 states and 5227 transitions. [2020-08-21 13:54:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 13:54:54,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-08-21 13:54:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:54:54,990 INFO L225 Difference]: With dead ends: 3666 [2020-08-21 13:54:54,991 INFO L226 Difference]: Without dead ends: 2553 [2020-08-21 13:54:54,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-08-21 13:54:55,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2020-08-21 13:54:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2184. [2020-08-21 13:54:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-08-21 13:54:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 2871 transitions. [2020-08-21 13:54:55,668 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 2871 transitions. Word has length 127 [2020-08-21 13:54:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:54:55,668 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 2871 transitions. [2020-08-21 13:54:55,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:54:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 2871 transitions. [2020-08-21 13:54:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-21 13:54:55,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:54:55,674 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:54:55,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:54:55,675 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:54:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:54:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash 355592246, now seen corresponding path program 1 times [2020-08-21 13:54:55,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:54:55,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74482755] [2020-08-21 13:54:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:54:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:54:55,779 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:54:55,779 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:54:55,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:54:55,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:54:55 BoogieIcfgContainer [2020-08-21 13:54:55,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:54:55,837 INFO L168 Benchmark]: Toolchain (without parser) took 50853.89 ms. Allocated memory was 141.6 MB in the beginning and 777.0 MB in the end (delta: 635.4 MB). Free memory was 102.7 MB in the beginning and 503.3 MB in the end (delta: -400.5 MB). Peak memory consumption was 234.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:54:55,837 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-21 13:54:55,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.23 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 171.0 MB in the end (delta: -68.7 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-08-21 13:54:55,848 INFO L168 Benchmark]: Boogie Preprocessor took 103.97 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:54:55,849 INFO L168 Benchmark]: RCFGBuilder took 1446.02 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 166.3 MB in the beginning and 181.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:54:55,850 INFO L168 Benchmark]: TraceAbstraction took 48637.40 ms. Allocated memory was 235.9 MB in the beginning and 777.0 MB in the end (delta: 541.1 MB). Free memory was 181.5 MB in the beginning and 503.3 MB in the end (delta: -321.8 MB). Peak memory consumption was 219.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:54:55,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.23 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 171.0 MB in the end (delta: -68.7 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.97 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1446.02 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 166.3 MB in the beginning and 181.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48637.40 ms. Allocated memory was 235.9 MB in the beginning and 777.0 MB in the end (delta: 541.1 MB). Free memory was 181.5 MB in the beginning and 503.3 MB in the end (delta: -321.8 MB). Peak memory consumption was 219.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int __SELECTED_FEATURE_base ; [L41] int __SELECTED_FEATURE_highWaterSensor ; [L42] int __SELECTED_FEATURE_lowWaterSensor ; [L43] int __SELECTED_FEATURE_methaneQuery ; [L44] int __SELECTED_FEATURE_methaneAlarm ; [L45] int __SELECTED_FEATURE_stopCommand ; [L46] int __SELECTED_FEATURE_startCommand ; [L47] int __GUIDSL_ROOT_PRODUCTION ; [L140] int pumpRunning = 0; [L141] int systemActive = 1; [L641] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L914] int waterLevel = 1; [L915] int methaneLevelCritical = 0; [L1026] int cleanupTimeShifts = 4; [L1099] int retValue_acc ; [L1100] int tmp ; [L1104] CALL select_helpers() [L872] __GUIDSL_ROOT_PRODUCTION = 1 [L1104] RET select_helpers() [L1105] CALL select_features() [L857] __SELECTED_FEATURE_base = 1 [L858] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L858] RET, EXPR select_one() [L858] __SELECTED_FEATURE_highWaterSensor = select_one() [L859] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L859] RET, EXPR select_one() [L859] __SELECTED_FEATURE_lowWaterSensor = select_one() [L860] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L860] RET, EXPR select_one() [L860] __SELECTED_FEATURE_methaneQuery = select_one() [L861] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L861] RET, EXPR select_one() [L861] __SELECTED_FEATURE_methaneAlarm = select_one() [L862] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L862] RET, EXPR select_one() [L862] __SELECTED_FEATURE_stopCommand = select_one() [L863] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L863] RET, EXPR select_one() [L863] __SELECTED_FEATURE_startCommand = select_one() [L1105] RET select_features() [L1106] CALL, EXPR valid_product() [L877] int retValue_acc ; [L880] retValue_acc = __SELECTED_FEATURE_base [L881] return (retValue_acc); [L1106] RET, EXPR valid_product() [L1106] tmp = valid_product() [L1108] COND TRUE \read(tmp) [L1110] FCALL setup() [L1111] CALL runTest() [L1093] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 [L64] COND TRUE 1 [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) [L76] CALL waterRise() [L932] COND TRUE waterLevel < 2 [L933] waterLevel = waterLevel + 1 [L76] RET waterRise() [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___0) [L86] CALL changeMethaneLevel() [L944] COND FALSE !(\read(methaneLevelCritical)) [L947] methaneLevelCritical = 1 [L86] RET changeMethaneLevel() [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) [L95] COND FALSE !(\read(__SELECTED_FEATURE_startCommand)) [L119] CALL timeShift() [L148] COND FALSE !(\read(pumpRunning)) [L155] COND TRUE \read(systemActive) [L157] CALL processEnvironment() [L291] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) [L298] CALL processEnvironment__before__methaneAlarm() [L248] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) [L255] CALL processEnvironment__before__lowWaterSensor() [L205] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L207] CALL processEnvironment__role__highWaterSensor() [L177] int tmp ; [L180] COND TRUE ! pumpRunning [L182] CALL, EXPR isHighWaterLevel() [L411] int retValue_acc ; [L412] int tmp ; [L413] int tmp___0 ; [L417] CALL, EXPR isHighWaterSensorDry() [L994] int retValue_acc ; [L997] COND FALSE !(waterLevel < 2) [L1001] retValue_acc = 0 [L1002] return (retValue_acc); [L417] RET, EXPR isHighWaterSensorDry() [L417] tmp = isHighWaterSensorDry() [L419] COND FALSE !(\read(tmp)) [L422] tmp___0 = 1 [L424] retValue_acc = tmp___0 [L425] return (retValue_acc); [L182] RET, EXPR isHighWaterLevel() [L182] tmp = isHighWaterLevel() [L184] COND TRUE \read(tmp) [L186] CALL activatePump() [L333] COND FALSE !(\read(__SELECTED_FEATURE_methaneQuery)) [L340] CALL activatePump__before__methaneQuery() [L308] pumpRunning = 1 [L340] RET activatePump__before__methaneQuery() [L186] RET activatePump() [L207] RET processEnvironment__role__highWaterSensor() [L255] RET processEnvironment__before__lowWaterSensor() [L298] RET processEnvironment__before__methaneAlarm() [L157] RET processEnvironment() [L163] CALL __utac_acc__Specification1_spec__1() [L888] int tmp ; [L889] int tmp___0 ; [L893] CALL, EXPR isMethaneLevelCritical() [L953] int retValue_acc ; [L956] retValue_acc = methaneLevelCritical [L957] return (retValue_acc); [L893] RET, EXPR isMethaneLevelCritical() [L893] tmp = isMethaneLevelCritical() [L895] COND TRUE \read(tmp) [L897] CALL, EXPR isPumpRunning() [L366] int retValue_acc ; [L369] retValue_acc = pumpRunning [L370] return (retValue_acc); [L897] RET, EXPR isPumpRunning() [L897] tmp___0 = isPumpRunning() [L899] COND TRUE \read(tmp___0) [L901] CALL __automaton_fail() [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 298 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.5s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 41.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1344 SDtfs, 5375 SDslu, 915 SDs, 0 SdLazy, 9534 SolverSat, 4227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 295 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 12.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2184occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 1494 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 798 ConstructedInterpolants, 0 QuantifiedInterpolants, 315242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 360/360 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...