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 0.1.24-13a467a-m [2019-10-14 23:38:41,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:38:41,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:38:41,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:38:41,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:38:41,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:38:41,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:38:41,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:38:41,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:38:41,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:38:41,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:38:41,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:38:41,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:38:41,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:38:41,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:38:41,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:38:41,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:38:41,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:38:41,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:38:41,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:38:41,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:38:41,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:38:41,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:38:41,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:38:41,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:38:41,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:38:41,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:38:41,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:38:41,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:38:41,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:38:41,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:38:41,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:38:41,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:38:41,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:38:41,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:38:41,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:38:41,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:38:41,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:38:41,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:38:41,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:38:41,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:38:41,697 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 [2019-10-14 23:38:41,714 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:38:41,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:38:41,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:38:41,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:38:41,717 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:38:41,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:38:41,718 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:38:41,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:38:41,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:38:41,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:38:41,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:38:41,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:38:41,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:38:41,720 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:38:41,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:38:41,720 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:38:41,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:38:41,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:38:41,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:38:41,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:38:41,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:38:41,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:38:41,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:38:41,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:38:41,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:38:41,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:38:41,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:38:41,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:38:41,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:38:41,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:38:42,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:38:42,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:38:42,015 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:38:42,016 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:38:42,016 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2019-10-14 23:38:42,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31ec7564/314d4ee656c44940ba913a6612c9330a/FLAG716620404 [2019-10-14 23:38:42,561 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:38:42,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2019-10-14 23:38:42,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31ec7564/314d4ee656c44940ba913a6612c9330a/FLAG716620404 [2019-10-14 23:38:42,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31ec7564/314d4ee656c44940ba913a6612c9330a [2019-10-14 23:38:42,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:38:42,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:38:42,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:42,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:38:42,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:38:42,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:42" (1/1) ... [2019-10-14 23:38:42,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678a2432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:42, skipping insertion in model container [2019-10-14 23:38:42,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:42" (1/1) ... [2019-10-14 23:38:42,951 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:38:43,001 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:38:43,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:43,450 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:38:43,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:43,588 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:38:43,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43 WrapperNode [2019-10-14 23:38:43,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:43,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:38:43,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:38:43,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:38:43,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:38:43,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:38:43,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:38:43,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:38:43,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (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 [2019-10-14 23:38:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:38:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:38:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:38:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:38:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:38:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:38:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:38:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:38:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:38:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:38:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:38:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:38:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:38:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:38:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:38:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:38:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:38:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:38:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:38:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:38:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:38:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:38:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:38:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:38:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:38:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:38:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:38:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:38:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:38:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:38:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:38:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:38:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:38:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:38:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:38:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:38:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:38:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:38:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:38:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:38:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:38:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:38:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:38:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:38:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:38:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:38:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:38:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:38:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:38:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:38:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:38:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:38:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:38:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:38:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:38:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:38:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:38:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:38:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:38:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:38:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:38:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:38:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:38:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:38:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:38:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:38:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:38:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:38:44,726 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:38:44,726 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:38:44,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:44 BoogieIcfgContainer [2019-10-14 23:38:44,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:38:44,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:38:44,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:38:44,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:38:44,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:38:42" (1/3) ... [2019-10-14 23:38:44,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:44, skipping insertion in model container [2019-10-14 23:38:44,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43" (2/3) ... [2019-10-14 23:38:44,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:44, skipping insertion in model container [2019-10-14 23:38:44,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:44" (3/3) ... [2019-10-14 23:38:44,739 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2019-10-14 23:38:44,749 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:38:44,759 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:38:44,770 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:38:44,806 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:38:44,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:38:44,807 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:38:44,807 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:38:44,807 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:38:44,808 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:38:44,808 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:38:44,808 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:38:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2019-10-14 23:38:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:38:44,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:44,844 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] [2019-10-14 23:38:44,846 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:44,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1091923628, now seen corresponding path program 1 times [2019-10-14 23:38:44,863 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:44,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705855106] [2019-10-14 23:38:44,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:44,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:44,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:45,579 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:45,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705855106] [2019-10-14 23:38:45,645 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:45,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:38:45,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704853709] [2019-10-14 23:38:45,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:38:45,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:45,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:38:45,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:38:45,674 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2019-10-14 23:38:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:46,820 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2019-10-14 23:38:46,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:38:46,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:38:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:46,849 INFO L225 Difference]: With dead ends: 311 [2019-10-14 23:38:46,849 INFO L226 Difference]: Without dead ends: 168 [2019-10-14 23:38:46,856 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 [2019-10-14 23:38:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-14 23:38:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2019-10-14 23:38:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-14 23:38:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2019-10-14 23:38:46,953 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2019-10-14 23:38:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:46,954 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2019-10-14 23:38:46,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:38:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2019-10-14 23:38:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:38:46,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:46,958 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] [2019-10-14 23:38:46,958 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:46,959 INFO L82 PathProgramCache]: Analyzing trace with hash 644500822, now seen corresponding path program 1 times [2019-10-14 23:38:46,959 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:46,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343130675] [2019-10-14 23:38:46,960 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:46,960 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:46,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,324 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:47,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343130675] [2019-10-14 23:38:47,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:47,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:38:47,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853220423] [2019-10-14 23:38:47,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:38:47,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:38:47,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:38:47,385 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2019-10-14 23:38:47,841 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:48,695 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2019-10-14 23:38:48,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:38:48,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:38:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:48,698 INFO L225 Difference]: With dead ends: 238 [2019-10-14 23:38:48,699 INFO L226 Difference]: Without dead ends: 152 [2019-10-14 23:38:48,700 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:38:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-10-14 23:38:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2019-10-14 23:38:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-14 23:38:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2019-10-14 23:38:48,733 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2019-10-14 23:38:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:48,734 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2019-10-14 23:38:48,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:38:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2019-10-14 23:38:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:38:48,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:48,736 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] [2019-10-14 23:38:48,736 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:48,736 INFO L82 PathProgramCache]: Analyzing trace with hash -350015351, now seen corresponding path program 1 times [2019-10-14 23:38:48,737 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:48,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940290808] [2019-10-14 23:38:48,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:48,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:48,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,050 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:49,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940290808] [2019-10-14 23:38:49,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:49,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:38:49,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935631200] [2019-10-14 23:38:49,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:38:49,111 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:49,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:38:49,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:38:49,112 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2019-10-14 23:38:49,612 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:49,924 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:50,192 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:50,456 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:51,265 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:53,092 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2019-10-14 23:38:53,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:38:53,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-14 23:38:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:53,097 INFO L225 Difference]: With dead ends: 427 [2019-10-14 23:38:53,097 INFO L226 Difference]: Without dead ends: 326 [2019-10-14 23:38:53,098 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:38:53,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-14 23:38:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2019-10-14 23:38:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-10-14 23:38:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2019-10-14 23:38:53,185 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2019-10-14 23:38:53,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:53,186 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2019-10-14 23:38:53,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:38:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2019-10-14 23:38:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:38:53,189 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:53,189 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, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:53,189 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:53,190 INFO L82 PathProgramCache]: Analyzing trace with hash -103520613, now seen corresponding path program 1 times [2019-10-14 23:38:53,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:53,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385640500] [2019-10-14 23:38:53,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:53,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:53,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,549 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:53,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385640500] [2019-10-14 23:38:53,685 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:53,685 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:38:53,685 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904145169] [2019-10-14 23:38:53,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:38:53,686 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:53,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:38:53,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:38:53,688 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 12 states. [2019-10-14 23:38:54,272 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:54,603 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:54,888 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:55,156 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:55,751 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:56,705 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:57,105 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:57,494 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:57,754 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:38:58,032 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:58,464 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:58,850 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:59,224 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:00,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:00,947 INFO L93 Difference]: Finished difference Result 1081 states and 1492 transitions. [2019-10-14 23:39:00,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:00,947 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-14 23:39:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:00,961 INFO L225 Difference]: With dead ends: 1081 [2019-10-14 23:39:00,962 INFO L226 Difference]: Without dead ends: 837 [2019-10-14 23:39:00,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2019-10-14 23:39:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 744. [2019-10-14 23:39:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-14 23:39:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 950 transitions. [2019-10-14 23:39:01,146 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 950 transitions. Word has length 57 [2019-10-14 23:39:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:01,146 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 950 transitions. [2019-10-14 23:39:01,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 950 transitions. [2019-10-14 23:39:01,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:39:01,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:01,151 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] [2019-10-14 23:39:01,152 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1065334495, now seen corresponding path program 1 times [2019-10-14 23:39:01,152 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:01,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095240489] [2019-10-14 23:39:01,153 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:01,153 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:01,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,456 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:01,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095240489] [2019-10-14 23:39:01,551 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:01,551 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:39:01,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52049381] [2019-10-14 23:39:01,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:01,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:01,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:01,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:39:01,553 INFO L87 Difference]: Start difference. First operand 744 states and 950 transitions. Second operand 6 states. [2019-10-14 23:39:01,926 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:03,622 INFO L93 Difference]: Finished difference Result 1779 states and 2437 transitions. [2019-10-14 23:39:03,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:39:03,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-14 23:39:03,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:03,632 INFO L225 Difference]: With dead ends: 1779 [2019-10-14 23:39:03,632 INFO L226 Difference]: Without dead ends: 1059 [2019-10-14 23:39:03,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2019-10-14 23:39:03,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 972. [2019-10-14 23:39:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2019-10-14 23:39:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1232 transitions. [2019-10-14 23:39:03,847 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1232 transitions. Word has length 61 [2019-10-14 23:39:03,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:03,848 INFO L462 AbstractCegarLoop]: Abstraction has 972 states and 1232 transitions. [2019-10-14 23:39:03,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1232 transitions. [2019-10-14 23:39:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:39:03,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:03,852 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] [2019-10-14 23:39:03,852 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:03,853 INFO L82 PathProgramCache]: Analyzing trace with hash 380759586, now seen corresponding path program 1 times [2019-10-14 23:39:03,853 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:03,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23162895] [2019-10-14 23:39:03,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:03,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:03,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,202 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:39:04,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23162895] [2019-10-14 23:39:04,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838263539] [2019-10-14 23:39:04,323 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 [2019-10-14 23:39:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:39:04,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:39:04,661 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:04,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-14 23:39:04,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426671543] [2019-10-14 23:39:04,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 23:39:04,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:04,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 23:39:04,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:04,663 INFO L87 Difference]: Start difference. First operand 972 states and 1232 transitions. Second operand 15 states. [2019-10-14 23:39:05,338 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:06,094 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:06,780 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:07,890 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:08,262 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:09,857 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:10,172 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:10,619 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:11,766 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:12,089 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:12,370 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:12,651 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:12,934 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:13,269 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:13,586 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:13,901 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:14,196 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:14,654 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:15,210 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:15,879 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:16,184 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:16,476 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:16,989 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:17,292 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:17,544 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:17,817 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:18,134 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:18,723 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:19,055 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:19,335 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:19,625 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:19,922 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:21,650 INFO L93 Difference]: Finished difference Result 2562 states and 3463 transitions. [2019-10-14 23:39:21,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-10-14 23:39:21,651 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2019-10-14 23:39:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:21,663 INFO L225 Difference]: With dead ends: 2562 [2019-10-14 23:39:21,663 INFO L226 Difference]: Without dead ends: 1857 [2019-10-14 23:39:21,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1192, Invalid=5614, Unknown=0, NotChecked=0, Total=6806 [2019-10-14 23:39:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states.