/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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 21:08:59,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:08:59,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:08:59,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:08:59,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:08:59,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:08:59,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:08:59,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:08:59,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:08:59,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:08:59,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:08:59,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:08:59,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:08:59,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:08:59,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:08:59,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:08:59,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:08:59,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:08:59,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:08:59,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:08:59,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:08:59,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:08:59,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:08:59,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:08:59,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:08:59,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:08:59,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:08:59,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:08:59,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:08:59,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:08:59,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:08:59,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:08:59,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:08:59,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:08:59,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:08:59,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:08:59,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:08:59,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:08:59,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:08:59,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:08:59,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:08:59,724 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 21:08:59,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:08:59,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:08:59,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:08:59,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:08:59,750 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:08:59,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:08:59,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:08:59,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:08:59,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:08:59,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:08:59,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:08:59,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:08:59,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:08:59,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:08:59,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:08:59,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:08:59,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:08:59,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:08:59,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:08:59,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:08:59,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:08:59,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:08:59,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:08:59,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:08:59,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:08:59,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:08:59,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:08:59,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:08:59,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:08:59,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:09:00,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:09:00,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:09:00,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:09:00,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:09:00,064 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:09:00,065 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-21 21:09:00,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1d1776ec/d17b8366469348c4b8e3e4811c755192/FLAG1f919f23e [2020-08-21 21:09:00,672 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:09:00,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-21 21:09:00,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1d1776ec/d17b8366469348c4b8e3e4811c755192/FLAG1f919f23e [2020-08-21 21:09:00,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1d1776ec/d17b8366469348c4b8e3e4811c755192 [2020-08-21 21:09:00,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:09:00,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:09:00,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:09:00,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:09:00,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:09:00,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:09:00" (1/1) ... [2020-08-21 21:09:00,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b17bc9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:00, skipping insertion in model container [2020-08-21 21:09:00,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:09:00" (1/1) ... [2020-08-21 21:09:00,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:09:00,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:09:01,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:09:01,472 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:09:01,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:09:01,633 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:09:01,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01 WrapperNode [2020-08-21 21:09:01,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:09:01,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:09:01,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:09:01,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:09:01,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (1/1) ... [2020-08-21 21:09:01,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (1/1) ... [2020-08-21 21:09:01,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (1/1) ... [2020-08-21 21:09:01,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (1/1) ... [2020-08-21 21:09:01,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (1/1) ... [2020-08-21 21:09:01,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (1/1) ... [2020-08-21 21:09:01,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (1/1) ... [2020-08-21 21:09:01,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:09:01,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:09:01,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:09:01,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:09:01,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (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 21:09:01,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:09:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:09:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:09:01,827 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:09:01,827 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:09:01,827 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-21 21:09:01,828 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-21 21:09:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-21 21:09:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-21 21:09:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-21 21:09:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-21 21:09:01,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:09:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-21 21:09:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-21 21:09:01,831 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:09:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:09:01,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:09:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:09:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:09:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:09:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:09:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 21:09:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 21:09:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:09:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:09:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:09:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:09:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:09:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:09:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:09:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:09:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:09:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:09:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:09:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:09:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:09:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:09:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:09:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:09:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:09:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:09:01,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:09:01,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:09:01,839 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:09:01,839 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:09:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:09:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:09:01,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:09:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:09:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:09:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:09:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:09:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:09:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 21:09:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 21:09:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:09:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:09:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:09:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:09:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:09:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:09:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:09:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:09:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:09:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:09:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:09:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:09:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:09:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:09:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-21 21:09:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:09:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-21 21:09:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-21 21:09:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:09:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-21 21:09:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-21 21:09:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:09:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-21 21:09:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-21 21:09:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-21 21:09:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:09:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:09:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:09:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:09:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:09:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:09:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:09:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:09:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:09:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:09:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:09:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:09:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:09:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:09:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:09:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:09:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:09:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:09:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:09:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:09:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:09:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:09:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:09:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:09:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:09:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:09:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:09:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:09:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:09:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:09:03,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:09:03,144 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:09:03,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:09:03 BoogieIcfgContainer [2020-08-21 21:09:03,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:09:03,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:09:03,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:09:03,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:09:03,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:09:00" (1/3) ... [2020-08-21 21:09:03,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ac0cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:09:03, skipping insertion in model container [2020-08-21 21:09:03,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:09:01" (2/3) ... [2020-08-21 21:09:03,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ac0cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:09:03, skipping insertion in model container [2020-08-21 21:09:03,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:09:03" (3/3) ... [2020-08-21 21:09:03,158 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_productSimulator.cil.c [2020-08-21 21:09:03,170 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:09:03,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:09:03,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:09:03,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:09:03,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:09:03,218 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:09:03,218 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:09:03,218 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:09:03,218 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:09:03,219 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:09:03,219 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:09:03,244 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-21 21:09:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 21:09:03,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:03,258 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 21:09:03,259 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:03,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:03,265 INFO L82 PathProgramCache]: Analyzing trace with hash -777436733, now seen corresponding path program 1 times [2020-08-21 21:09:03,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:03,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698963518] [2020-08-21 21:09:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,112 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 21:09:04,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:09:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 21:09:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:09:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 21:09:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 21:09:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:09:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:04,252 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 21:09:04,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698963518] [2020-08-21 21:09:04,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:04,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:09:04,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320987372] [2020-08-21 21:09:04,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:09:04,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:04,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:09:04,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:09:04,282 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2020-08-21 21:09:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:06,844 INFO L93 Difference]: Finished difference Result 436 states and 577 transitions. [2020-08-21 21:09:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 21:09:06,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-21 21:09:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:06,872 INFO L225 Difference]: With dead ends: 436 [2020-08-21 21:09:06,873 INFO L226 Difference]: Without dead ends: 248 [2020-08-21 21:09:06,878 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 21:09:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-21 21:09:06,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 199. [2020-08-21 21:09:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-21 21:09:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-08-21 21:09:07,001 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 78 [2020-08-21 21:09:07,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:07,002 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-08-21 21:09:07,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:09:07,002 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2020-08-21 21:09:07,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 21:09:07,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:07,007 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 21:09:07,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:09:07,008 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:07,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:07,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1216022007, now seen corresponding path program 1 times [2020-08-21 21:09:07,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:07,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551345107] [2020-08-21 21:09:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,439 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 21:09:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:09:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 21:09:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:09:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 21:09:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 21:09:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 21:09:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:07,549 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 21:09:07,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551345107] [2020-08-21 21:09:07,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:07,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:09:07,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105642068] [2020-08-21 21:09:07,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:09:07,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:07,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:09:07,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:09:07,553 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand 6 states. [2020-08-21 21:09:08,217 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 21:09:09,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:09,950 INFO L93 Difference]: Finished difference Result 360 states and 455 transitions. [2020-08-21 21:09:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:09:09,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-21 21:09:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:09,956 INFO L225 Difference]: With dead ends: 360 [2020-08-21 21:09:09,956 INFO L226 Difference]: Without dead ends: 232 [2020-08-21 21:09:09,958 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 21:09:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-08-21 21:09:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 190. [2020-08-21 21:09:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-21 21:09:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2020-08-21 21:09:10,003 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 79 [2020-08-21 21:09:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:10,004 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2020-08-21 21:09:10,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:09:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2020-08-21 21:09:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 21:09:10,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:10,007 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 21:09:10,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:09:10,007 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:10,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:10,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2141579182, now seen corresponding path program 1 times [2020-08-21 21:09:10,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:10,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241861656] [2020-08-21 21:09:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,453 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 21:09:10,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:09:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 21:09:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:09:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 21:09:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:09:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:09:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:10,597 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 21:09:10,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241861656] [2020-08-21 21:09:10,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:10,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 21:09:10,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785910644] [2020-08-21 21:09:10,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:09:10,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:10,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:09:10,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:09:10,600 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand 12 states. [2020-08-21 21:09:11,191 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:11,858 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-21 21:09:12,682 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-21 21:09:13,701 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:14,094 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 21:09:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:17,771 INFO L93 Difference]: Finished difference Result 619 states and 790 transitions. [2020-08-21 21:09:17,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:09:17,774 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-21 21:09:17,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:17,780 INFO L225 Difference]: With dead ends: 619 [2020-08-21 21:09:17,780 INFO L226 Difference]: Without dead ends: 470 [2020-08-21 21:09:17,782 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 21:09:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-08-21 21:09:17,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 379. [2020-08-21 21:09:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 21:09:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 476 transitions. [2020-08-21 21:09:17,884 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 476 transitions. Word has length 84 [2020-08-21 21:09:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:17,885 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 476 transitions. [2020-08-21 21:09:17,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:09:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 476 transitions. [2020-08-21 21:09:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 21:09:17,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:17,889 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 21:09:17,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:09:17,889 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:17,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1535963779, now seen corresponding path program 1 times [2020-08-21 21:09:17,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:17,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805291015] [2020-08-21 21:09:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,244 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 21:09:18,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:09:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 21:09:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:09:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 21:09:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 21:09:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:09:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 21:09:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:18,387 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 21:09:18,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805291015] [2020-08-21 21:09:18,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:18,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:09:18,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694264005] [2020-08-21 21:09:18,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:09:18,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:18,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:09:18,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:09:18,390 INFO L87 Difference]: Start difference. First operand 379 states and 476 transitions. Second operand 10 states. [2020-08-21 21:09:19,064 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:20,634 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:21,151 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:21,405 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:21,738 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:22,351 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 21:09:24,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:24,584 INFO L93 Difference]: Finished difference Result 1218 states and 1607 transitions. [2020-08-21 21:09:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:09:24,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-21 21:09:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:24,594 INFO L225 Difference]: With dead ends: 1218 [2020-08-21 21:09:24,595 INFO L226 Difference]: Without dead ends: 880 [2020-08-21 21:09:24,600 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 21:09:24,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-21 21:09:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 696. [2020-08-21 21:09:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-21 21:09:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 880 transitions. [2020-08-21 21:09:24,803 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 880 transitions. Word has length 90 [2020-08-21 21:09:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:24,804 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 880 transitions. [2020-08-21 21:09:24,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:09:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 880 transitions. [2020-08-21 21:09:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 21:09:24,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:24,808 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 21:09:24,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:09:24,809 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:24,809 INFO L82 PathProgramCache]: Analyzing trace with hash -859073223, now seen corresponding path program 1 times [2020-08-21 21:09:24,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:24,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552261982] [2020-08-21 21:09:24,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,141 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 21:09:25,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:09:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 21:09:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:09:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 21:09:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 21:09:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:09:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 21:09:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 21:09:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:25,319 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 21:09:25,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552261982] [2020-08-21 21:09:25,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:25,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:09:25,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625784092] [2020-08-21 21:09:25,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:09:25,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:25,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:09:25,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:09:25,322 INFO L87 Difference]: Start difference. First operand 696 states and 880 transitions. Second operand 11 states. [2020-08-21 21:09:26,173 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:27,711 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:28,080 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:28,399 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:29,312 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:29,640 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 21:09:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:32,041 INFO L93 Difference]: Finished difference Result 1972 states and 2746 transitions. [2020-08-21 21:09:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 21:09:32,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-21 21:09:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:32,052 INFO L225 Difference]: With dead ends: 1972 [2020-08-21 21:09:32,053 INFO L226 Difference]: Without dead ends: 1317 [2020-08-21 21:09:32,056 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 21:09:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-21 21:09:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1112. [2020-08-21 21:09:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2020-08-21 21:09:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1445 transitions. [2020-08-21 21:09:32,397 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1445 transitions. Word has length 94 [2020-08-21 21:09:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:32,399 INFO L479 AbstractCegarLoop]: Abstraction has 1112 states and 1445 transitions. [2020-08-21 21:09:32,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:09:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1445 transitions. [2020-08-21 21:09:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-21 21:09:32,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:32,406 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 21:09:32,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:09:32,406 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:32,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:32,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1170559539, now seen corresponding path program 1 times [2020-08-21 21:09:32,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:32,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725868640] [2020-08-21 21:09:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,728 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 21:09:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:09:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 21:09:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:09:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 21:09:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 21:09:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 21:09:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 21:09:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 21:09:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,978 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 21:09:32,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725868640] [2020-08-21 21:09:32,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:32,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:09:32,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305288812] [2020-08-21 21:09:32,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:09:32,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:32,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:09:32,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:09:32,981 INFO L87 Difference]: Start difference. First operand 1112 states and 1445 transitions. Second operand 11 states. [2020-08-21 21:09:34,736 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:35,052 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 21:09:35,362 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 21:09:35,686 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 21:09:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:37,546 INFO L93 Difference]: Finished difference Result 2484 states and 3550 transitions. [2020-08-21 21:09:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 21:09:37,547 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 127 [2020-08-21 21:09:37,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:37,562 INFO L225 Difference]: With dead ends: 2484 [2020-08-21 21:09:37,562 INFO L226 Difference]: Without dead ends: 1413 [2020-08-21 21:09:37,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:09:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-08-21 21:09:37,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1138. [2020-08-21 21:09:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-08-21 21:09:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1473 transitions. [2020-08-21 21:09:37,904 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1473 transitions. Word has length 127 [2020-08-21 21:09:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:37,906 INFO L479 AbstractCegarLoop]: Abstraction has 1138 states and 1473 transitions. [2020-08-21 21:09:37,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:09:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1473 transitions. [2020-08-21 21:09:37,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-21 21:09:37,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:37,913 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 21:09:37,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:09:37,913 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:37,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:37,914 INFO L82 PathProgramCache]: Analyzing trace with hash 141200241, now seen corresponding path program 1 times [2020-08-21 21:09:37,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:37,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317758328] [2020-08-21 21:09:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,243 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 21:09:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:09:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 21:09:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:09:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 21:09:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 21:09:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 21:09:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 21:09:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 21:09:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:38,601 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 21:09:38,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317758328] [2020-08-21 21:09:38,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:38,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 21:09:38,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829568611] [2020-08-21 21:09:38,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 21:09:38,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:38,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 21:09:38,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:09:38,611 INFO L87 Difference]: Start difference. First operand 1138 states and 1473 transitions. Second operand 14 states. [2020-08-21 21:09:39,885 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:40,401 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:41,680 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:42,053 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:42,393 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 21:09:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:44,515 INFO L93 Difference]: Finished difference Result 2530 states and 3598 transitions. [2020-08-21 21:09:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:09:44,516 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2020-08-21 21:09:44,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:44,525 INFO L225 Difference]: With dead ends: 2530 [2020-08-21 21:09:44,526 INFO L226 Difference]: Without dead ends: 1433 [2020-08-21 21:09:44,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-08-21 21:09:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-08-21 21:09:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1154. [2020-08-21 21:09:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2020-08-21 21:09:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1489 transitions. [2020-08-21 21:09:44,846 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1489 transitions. Word has length 127 [2020-08-21 21:09:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:44,847 INFO L479 AbstractCegarLoop]: Abstraction has 1154 states and 1489 transitions. [2020-08-21 21:09:44,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 21:09:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1489 transitions. [2020-08-21 21:09:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-21 21:09:44,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:44,853 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 21:09:44,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:09:44,854 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:44,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash 265273488, now seen corresponding path program 1 times [2020-08-21 21:09:44,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:44,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147917747] [2020-08-21 21:09:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,243 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 21:09:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:09:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 21:09:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:09:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 21:09:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 21:09:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 21:09:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 21:09:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 21:09:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:45,493 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 21:09:45,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147917747] [2020-08-21 21:09:45,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:45,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:09:45,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470077344] [2020-08-21 21:09:45,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:09:45,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:45,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:09:45,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:09:45,497 INFO L87 Difference]: Start difference. First operand 1154 states and 1489 transitions. Second operand 9 states. [2020-08-21 21:09:45,984 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:46,700 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 21:09:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:50,984 INFO L93 Difference]: Finished difference Result 3666 states and 5227 transitions. [2020-08-21 21:09:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 21:09:50,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-08-21 21:09:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:51,002 INFO L225 Difference]: With dead ends: 3666 [2020-08-21 21:09:51,003 INFO L226 Difference]: Without dead ends: 2553 [2020-08-21 21:09:51,008 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 21:09:51,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2020-08-21 21:09:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2184. [2020-08-21 21:09:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-08-21 21:09:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 2871 transitions. [2020-08-21 21:09:51,622 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 2871 transitions. Word has length 127 [2020-08-21 21:09:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:51,623 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 2871 transitions. [2020-08-21 21:09:51,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:09:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 2871 transitions. [2020-08-21 21:09:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-21 21:09:51,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:51,628 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 21:09:51,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:09:51,628 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:51,628 INFO L82 PathProgramCache]: Analyzing trace with hash 355592246, now seen corresponding path program 1 times [2020-08-21 21:09:51,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:51,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423372822] [2020-08-21 21:09:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:09:51,719 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:09:51,720 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:09:51,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:09:51,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:09:51 BoogieIcfgContainer [2020-08-21 21:09:51,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:09:51,783 INFO L168 Benchmark]: Toolchain (without parser) took 50867.35 ms. Allocated memory was 142.1 MB in the beginning and 773.8 MB in the end (delta: 631.8 MB). Free memory was 104.3 MB in the beginning and 658.4 MB in the end (delta: -554.1 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:51,784 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 21:09:51,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.75 ms. Allocated memory was 142.1 MB in the beginning and 206.6 MB in the end (delta: 64.5 MB). Free memory was 104.1 MB in the beginning and 169.9 MB in the end (delta: -65.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:51,795 INFO L168 Benchmark]: Boogie Preprocessor took 95.57 ms. Allocated memory is still 206.6 MB. Free memory was 169.9 MB in the beginning and 165.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:51,796 INFO L168 Benchmark]: RCFGBuilder took 1415.81 ms. Allocated memory was 206.6 MB in the beginning and 235.4 MB in the end (delta: 28.8 MB). Free memory was 165.2 MB in the beginning and 177.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:51,797 INFO L168 Benchmark]: TraceAbstraction took 48629.94 ms. Allocated memory was 235.4 MB in the beginning and 773.8 MB in the end (delta: 538.4 MB). Free memory was 177.3 MB in the beginning and 658.4 MB in the end (delta: -481.1 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-08-21 21:09:51,805 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.75 ms. Allocated memory was 142.1 MB in the beginning and 206.6 MB in the end (delta: 64.5 MB). Free memory was 104.1 MB in the beginning and 169.9 MB in the end (delta: -65.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.57 ms. Allocated memory is still 206.6 MB. Free memory was 169.9 MB in the beginning and 165.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1415.81 ms. Allocated memory was 206.6 MB in the beginning and 235.4 MB in the end (delta: 28.8 MB). Free memory was 165.2 MB in the beginning and 177.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48629.94 ms. Allocated memory was 235.4 MB in the beginning and 773.8 MB in the end (delta: 538.4 MB). Free memory was 177.3 MB in the beginning and 658.4 MB in the end (delta: -481.1 MB). Peak memory consumption was 57.3 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: 1345 SDtfs, 5374 SDslu, 915 SDs, 0 SdLazy, 9530 SolverSat, 4219 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.7s 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, 4.2s 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...