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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:39:39,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:39:39,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:39:39,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:39:39,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:39:39,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:39:39,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:39:39,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:39:39,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:39:39,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:39:39,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:39:39,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:39:39,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:39:39,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:39:39,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:39:39,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:39:39,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:39:39,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:39:39,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:39:39,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:39:39,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:39:39,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:39:39,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:39:39,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:39:39,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:39:39,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:39:39,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:39:39,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:39:39,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:39:39,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:39:39,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:39:39,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:39:39,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:39:39,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:39:39,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:39:39,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:39:39,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:39:39,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:39:39,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:39:39,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:39:39,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:39:39,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:39:39,774 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:39:39,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:39:39,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:39:39,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:39:39,776 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:39:39,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:39:39,777 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:39:39,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:39:39,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:39:39,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:39:39,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:39:39,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:39:39,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:39:39,778 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:39:39,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:39:39,778 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:39:39,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:39:39,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:39:39,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:39:39,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:39:39,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:39:39,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:39:39,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:39:39,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:39:39,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:39:39,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:39:39,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:39:39,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:39:39,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:39:40,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:39:40,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:39:40,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:39:40,086 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:39:40,086 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:39:40,087 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2019-10-13 19:39:40,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4f76f7b/94036b5b74394a0295186779413f6677/FLAGfacade961 [2019-10-13 19:39:40,711 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:39:40,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2019-10-13 19:39:40,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4f76f7b/94036b5b74394a0295186779413f6677/FLAGfacade961 [2019-10-13 19:39:41,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4f76f7b/94036b5b74394a0295186779413f6677 [2019-10-13 19:39:41,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:39:41,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:39:41,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:41,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:39:41,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:39:41,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a029f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41, skipping insertion in model container [2019-10-13 19:39:41,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,047 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:39:41,107 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:39:41,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:41,643 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:39:41,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:39:41,784 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:39:41,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41 WrapperNode [2019-10-13 19:39:41,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:39:41,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:39:41,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:39:41,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:39:41,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (1/1) ... [2019-10-13 19:39:41,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:39:41,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:39:41,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:39:41,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:39:41,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-13 19:39:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:39:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:39:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:39:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:39:41,962 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:39:41,963 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:39:41,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:39:41,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:41,963 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:39:41,963 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:39:41,964 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:39:41,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:39:41,964 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:39:41,964 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:39:41,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:39:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:39:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:39:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:39:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:39:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:39:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:39:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:39:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:39:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:39:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:39:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:41,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:41,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:41,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:39:41,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:39:41,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:39:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:39:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:39:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:39:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:39:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:39:41,969 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:39:41,970 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:39:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:39:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:39:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:39:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:39:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:39:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:39:41,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:39:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:39:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:39:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:39:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:39:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:39:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:39:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:39:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:39:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:39:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:39:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:39:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:39:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:39:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:39:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:39:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:39:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:39:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:39:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:39:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:39:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:39:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:39:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:39:43,032 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:39:43,032 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:39:43,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:43 BoogieIcfgContainer [2019-10-13 19:39:43,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:39:43,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:39:43,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:39:43,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:39:43,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:39:41" (1/3) ... [2019-10-13 19:39:43,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af9f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:43, skipping insertion in model container [2019-10-13 19:39:43,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:39:41" (2/3) ... [2019-10-13 19:39:43,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af9f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:39:43, skipping insertion in model container [2019-10-13 19:39:43,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:39:43" (3/3) ... [2019-10-13 19:39:43,043 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2019-10-13 19:39:43,053 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:39:43,069 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:39:43,087 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:39:43,115 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:39:43,115 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:39:43,116 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:39:43,116 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:39:43,116 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:39:43,116 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:39:43,116 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:39:43,117 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:39:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2019-10-13 19:39:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:39:43,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:43,152 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:43,154 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:43,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1091923628, now seen corresponding path program 1 times [2019-10-13 19:39:43,171 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:43,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621514491] [2019-10-13 19:39:43,172 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:43,172 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:43,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,908 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:43,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621514491] [2019-10-13 19:39:43,975 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:43,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:39:43,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116850330] [2019-10-13 19:39:43,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:39:43,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:43,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:39:43,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:43,999 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2019-10-13 19:39:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:45,231 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2019-10-13 19:39:45,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:39:45,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:39:45,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:45,248 INFO L225 Difference]: With dead ends: 311 [2019-10-13 19:39:45,249 INFO L226 Difference]: Without dead ends: 168 [2019-10-13 19:39:45,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:39:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-13 19:39:45,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2019-10-13 19:39:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-13 19:39:45,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2019-10-13 19:39:45,348 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2019-10-13 19:39:45,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:45,348 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2019-10-13 19:39:45,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:39:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2019-10-13 19:39:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:39:45,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:45,353 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:45,353 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:45,353 INFO L82 PathProgramCache]: Analyzing trace with hash 644500822, now seen corresponding path program 1 times [2019-10-13 19:39:45,354 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:45,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863798286] [2019-10-13 19:39:45,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:45,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:45,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,741 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:45,812 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863798286] [2019-10-13 19:39:45,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:45,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:39:45,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509791330] [2019-10-13 19:39:45,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:39:45,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:45,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:39:45,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:39:45,831 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2019-10-13 19:39:46,309 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:47,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:47,144 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2019-10-13 19:39:47,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:39:47,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:39:47,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:47,148 INFO L225 Difference]: With dead ends: 238 [2019-10-13 19:39:47,148 INFO L226 Difference]: Without dead ends: 152 [2019-10-13 19:39:47,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:39:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-10-13 19:39:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2019-10-13 19:39:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-13 19:39:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2019-10-13 19:39:47,186 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2019-10-13 19:39:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:47,187 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2019-10-13 19:39:47,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:39:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2019-10-13 19:39:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:39:47,189 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:47,189 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:47,189 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:47,190 INFO L82 PathProgramCache]: Analyzing trace with hash -350015351, now seen corresponding path program 1 times [2019-10-13 19:39:47,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:47,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47772794] [2019-10-13 19:39:47,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:47,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:47,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:47,579 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:47,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47772794] [2019-10-13 19:39:47,665 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:47,666 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:39:47,666 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385599555] [2019-10-13 19:39:47,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:39:47,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:47,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:39:47,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:39:47,667 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2019-10-13 19:39:48,287 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:48,691 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:48,974 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:49,237 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:50,048 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:39:51,980 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2019-10-13 19:39:51,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:39:51,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:39:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:39:51,985 INFO L225 Difference]: With dead ends: 427 [2019-10-13 19:39:51,986 INFO L226 Difference]: Without dead ends: 326 [2019-10-13 19:39:51,987 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:39:51,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-13 19:39:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2019-10-13 19:39:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-13 19:39:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2019-10-13 19:39:52,054 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2019-10-13 19:39:52,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:39:52,054 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2019-10-13 19:39:52,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:39:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2019-10-13 19:39:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:39:52,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:39:52,058 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:39:52,058 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:39:52,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:39:52,059 INFO L82 PathProgramCache]: Analyzing trace with hash -103520613, now seen corresponding path program 1 times [2019-10-13 19:39:52,059 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:39:52,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967769696] [2019-10-13 19:39:52,059 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:52,060 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:39:52,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:39:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,388 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:39:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:39:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:39:52,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967769696] [2019-10-13 19:39:52,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:39:52,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:39:52,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29056821] [2019-10-13 19:39:52,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:39:52,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:39:52,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:39:52,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:39:52,490 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 12 states. [2019-10-13 19:39:53,119 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:53,455 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:53,719 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:53,986 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:54,619 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:39:55,621 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:39:56,082 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:56,512 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:56,798 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:39:57,098 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:39:57,563 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:57,969 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:39:58,370 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:00,252 INFO L93 Difference]: Finished difference Result 1081 states and 1492 transitions. [2019-10-13 19:40:00,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:00,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-13 19:40:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:00,260 INFO L225 Difference]: With dead ends: 1081 [2019-10-13 19:40:00,260 INFO L226 Difference]: Without dead ends: 837 [2019-10-13 19:40:00,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2019-10-13 19:40:00,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 744. [2019-10-13 19:40:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-13 19:40:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 950 transitions. [2019-10-13 19:40:00,438 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 950 transitions. Word has length 57 [2019-10-13 19:40:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:00,439 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 950 transitions. [2019-10-13 19:40:00,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 950 transitions. [2019-10-13 19:40:00,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:40:00,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:00,444 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:00,444 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:00,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1065334495, now seen corresponding path program 1 times [2019-10-13 19:40:00,445 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:00,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840314509] [2019-10-13 19:40:00,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:00,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:00,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,783 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:00,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840314509] [2019-10-13 19:40:00,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:00,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:40:00,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428753493] [2019-10-13 19:40:00,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:00,896 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:40:00,897 INFO L87 Difference]: Start difference. First operand 744 states and 950 transitions. Second operand 6 states. [2019-10-13 19:40:01,246 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:03,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:03,070 INFO L93 Difference]: Finished difference Result 1779 states and 2437 transitions. [2019-10-13 19:40:03,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:40:03,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-13 19:40:03,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:03,079 INFO L225 Difference]: With dead ends: 1779 [2019-10-13 19:40:03,080 INFO L226 Difference]: Without dead ends: 1059 [2019-10-13 19:40:03,083 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2019-10-13 19:40:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 972. [2019-10-13 19:40:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2019-10-13 19:40:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1232 transitions. [2019-10-13 19:40:03,256 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1232 transitions. Word has length 61 [2019-10-13 19:40:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:03,256 INFO L462 AbstractCegarLoop]: Abstraction has 972 states and 1232 transitions. [2019-10-13 19:40:03,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1232 transitions. [2019-10-13 19:40:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:40:03,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:03,259 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:03,260 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 380759586, now seen corresponding path program 1 times [2019-10-13 19:40:03,260 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:03,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088401463] [2019-10-13 19:40:03,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:03,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:03,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,646 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:40:03,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088401463] [2019-10-13 19:40:03,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986527737] [2019-10-13 19:40:03,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:04,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:40:04,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:40:04,170 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:04,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-13 19:40:04,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13139004] [2019-10-13 19:40:04,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 19:40:04,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:04,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 19:40:04,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:04,173 INFO L87 Difference]: Start difference. First operand 972 states and 1232 transitions. Second operand 15 states. [2019-10-13 19:40:04,789 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:05,565 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:06,314 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:07,411 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:07,811 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:09,398 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:09,720 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:10,178 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:11,338 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:11,650 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:11,927 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:12,237 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:12,520 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:12,885 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:13,198 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:13,517 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:13,786 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:14,243 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:14,829 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:15,536 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:15,869 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:16,166 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:16,665 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:16,990 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:17,245 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:17,513 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:17,835 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:18,408 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:18,736 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:19,087 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:19,445 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:19,717 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191