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_spec5_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:27,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:27,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:27,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:27,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:27,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:27,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:27,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:27,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:27,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:27,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:27,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:27,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:27,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:27,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:27,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:27,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:27,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:27,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:27,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:27,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:27,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:27,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:27,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:27,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:27,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:27,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:27,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:27,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:27,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:27,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:27,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:27,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:27,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:27,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:27,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:27,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:27,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:27,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:27,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:27,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:27,736 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 [2019-09-20 13:07:27,750 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:27,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:27,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:27,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:27,753 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:27,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:27,753 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:27,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:27,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:27,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:27,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:27,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:27,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:27,755 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:27,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:27,755 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:27,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:27,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:27,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:27,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:27,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:27,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:27,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:27,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:27,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:27,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:27,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:27,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:27,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:27,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:27,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:27,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:27,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:27,828 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:27,829 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2019-09-20 13:07:27,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c3a3a0a/cbb54ddce0824c11b52d297967b6126b/FLAGf4af5b74f [2019-09-20 13:07:28,448 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:28,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2019-09-20 13:07:28,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c3a3a0a/cbb54ddce0824c11b52d297967b6126b/FLAGf4af5b74f [2019-09-20 13:07:28,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c3a3a0a/cbb54ddce0824c11b52d297967b6126b [2019-09-20 13:07:28,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:28,752 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:28,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:28,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:28,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:28,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:28" (1/1) ... [2019-09-20 13:07:28,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3143413b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:28, skipping insertion in model container [2019-09-20 13:07:28,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:28" (1/1) ... [2019-09-20 13:07:28,765 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:28,815 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:29,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:29,305 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:29,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:29,467 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:29,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29 WrapperNode [2019-09-20 13:07:29,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:29,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:29,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:29,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:29,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (1/1) ... [2019-09-20 13:07:29,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (1/1) ... [2019-09-20 13:07:29,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (1/1) ... [2019-09-20 13:07:29,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (1/1) ... [2019-09-20 13:07:29,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (1/1) ... [2019-09-20 13:07:29,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (1/1) ... [2019-09-20 13:07:29,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (1/1) ... [2019-09-20 13:07:29,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:29,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:29,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:29,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:29,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (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 [2019-09-20 13:07:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:29,676 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:29,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:29,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:07:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:07:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:29,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:29,689 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:29,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:29,689 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:07:29,690 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:29,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:29,692 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:29,693 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:29,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:29,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:29,698 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:29,699 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:29,700 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:07:29,701 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:07:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:07:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:30,950 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:30,951 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:30,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:30 BoogieIcfgContainer [2019-09-20 13:07:30,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:30,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:30,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:30,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:30,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:28" (1/3) ... [2019-09-20 13:07:30,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4bfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:30, skipping insertion in model container [2019-09-20 13:07:30,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:29" (2/3) ... [2019-09-20 13:07:30,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4bfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:30, skipping insertion in model container [2019-09-20 13:07:30,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:30" (3/3) ... [2019-09-20 13:07:30,961 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2019-09-20 13:07:30,970 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:30,979 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:30,996 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:31,033 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:31,034 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:31,034 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:31,034 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:31,035 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:31,035 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:31,035 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:31,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:31,035 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2019-09-20 13:07:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:31,073 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:31,075 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:31,078 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:31,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:31,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1347369271, now seen corresponding path program 1 times [2019-09-20 13:07:31,086 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:31,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:31,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:31,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:31,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:31,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:31,498 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:07:31,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:07:31,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:31,521 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 2 states. [2019-09-20 13:07:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:31,590 INFO L93 Difference]: Finished difference Result 290 states and 357 transitions. [2019-09-20 13:07:31,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:07:31,591 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:07:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:31,604 INFO L225 Difference]: With dead ends: 290 [2019-09-20 13:07:31,604 INFO L226 Difference]: Without dead ends: 147 [2019-09-20 13:07:31,609 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:07:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-20 13:07:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-09-20 13:07:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-09-20 13:07:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2019-09-20 13:07:31,666 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 59 [2019-09-20 13:07:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:31,667 INFO L475 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2019-09-20 13:07:31,667 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:07:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2019-09-20 13:07:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:07:31,672 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:31,672 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:31,672 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:31,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1814034675, now seen corresponding path program 1 times [2019-09-20 13:07:31,673 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:31,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:31,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:31,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:31,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:31,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:07:31,834 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:07:31,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:07:31,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:31,835 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 3 states. [2019-09-20 13:07:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:31,875 INFO L93 Difference]: Finished difference Result 235 states and 275 transitions. [2019-09-20 13:07:31,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:07:31,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:07:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:31,879 INFO L225 Difference]: With dead ends: 235 [2019-09-20 13:07:31,879 INFO L226 Difference]: Without dead ends: 138 [2019-09-20 13:07:31,881 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:07:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-09-20 13:07:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-09-20 13:07:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-09-20 13:07:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2019-09-20 13:07:31,896 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 60 [2019-09-20 13:07:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:31,897 INFO L475 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2019-09-20 13:07:31,897 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:07:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2019-09-20 13:07:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:07:31,899 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:31,900 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:31,900 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:31,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:31,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1518926539, now seen corresponding path program 1 times [2019-09-20 13:07:31,900 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:31,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:31,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:31,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:32,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:32,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:32,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:32,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:32,094 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 7 states. [2019-09-20 13:07:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:32,462 INFO L93 Difference]: Finished difference Result 248 states and 293 transitions. [2019-09-20 13:07:32,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:32,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:07:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:32,466 INFO L225 Difference]: With dead ends: 248 [2019-09-20 13:07:32,466 INFO L226 Difference]: Without dead ends: 138 [2019-09-20 13:07:32,468 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:07:32,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-09-20 13:07:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-09-20 13:07:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-09-20 13:07:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2019-09-20 13:07:32,486 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 65 [2019-09-20 13:07:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:32,488 INFO L475 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2019-09-20 13:07:32,488 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:32,489 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2019-09-20 13:07:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-09-20 13:07:32,493 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:32,493 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:32,493 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:32,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:32,494 INFO L82 PathProgramCache]: Analyzing trace with hash 793046871, now seen corresponding path program 1 times [2019-09-20 13:07:32,494 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:32,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:32,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:32,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:32,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:32,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:07:32,643 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:07:32,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:07:32,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:07:32,644 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 5 states. [2019-09-20 13:07:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:33,220 INFO L93 Difference]: Finished difference Result 364 states and 436 transitions. [2019-09-20 13:07:33,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:07:33,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2019-09-20 13:07:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:33,228 INFO L225 Difference]: With dead ends: 364 [2019-09-20 13:07:33,228 INFO L226 Difference]: Without dead ends: 254 [2019-09-20 13:07:33,231 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-09-20 13:07:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2019-09-20 13:07:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2019-09-20 13:07:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2019-09-20 13:07:33,283 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 78 [2019-09-20 13:07:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:33,284 INFO L475 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2019-09-20 13:07:33,284 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:07:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2019-09-20 13:07:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-09-20 13:07:33,287 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:33,288 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:33,288 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:33,289 INFO L82 PathProgramCache]: Analyzing trace with hash -856462191, now seen corresponding path program 1 times [2019-09-20 13:07:33,289 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:33,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:33,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:33,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:33,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:07:33,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:33,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:07:33,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:07:33,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:07:33,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:33,472 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 7 states. [2019-09-20 13:07:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:34,193 INFO L93 Difference]: Finished difference Result 460 states and 539 transitions. [2019-09-20 13:07:34,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:07:34,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2019-09-20 13:07:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:34,197 INFO L225 Difference]: With dead ends: 460 [2019-09-20 13:07:34,197 INFO L226 Difference]: Without dead ends: 253 [2019-09-20 13:07:34,198 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2019-09-20 13:07:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 234. [2019-09-20 13:07:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2019-09-20 13:07:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 264 transitions. [2019-09-20 13:07:34,219 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 264 transitions. Word has length 92 [2019-09-20 13:07:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:34,219 INFO L475 AbstractCegarLoop]: Abstraction has 234 states and 264 transitions. [2019-09-20 13:07:34,219 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:07:34,220 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 264 transitions. [2019-09-20 13:07:34,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:07:34,221 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:34,221 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:34,222 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash -357754488, now seen corresponding path program 1 times [2019-09-20 13:07:34,222 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:34,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:34,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:34,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:34,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:34,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:07:34,320 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:07:34,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:07:34,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:07:34,321 INFO L87 Difference]: Start difference. First operand 234 states and 264 transitions. Second operand 6 states. [2019-09-20 13:07:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:34,361 INFO L93 Difference]: Finished difference Result 447 states and 516 transitions. [2019-09-20 13:07:34,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:07:34,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-20 13:07:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:34,367 INFO L225 Difference]: With dead ends: 447 [2019-09-20 13:07:34,367 INFO L226 Difference]: Without dead ends: 241 [2019-09-20 13:07:34,368 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:07:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2019-09-20 13:07:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2019-09-20 13:07:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2019-09-20 13:07:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2019-09-20 13:07:34,393 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 108 [2019-09-20 13:07:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:34,393 INFO L475 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2019-09-20 13:07:34,393 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:07:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2019-09-20 13:07:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:07:34,395 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:34,395 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:34,396 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1570518214, now seen corresponding path program 1 times [2019-09-20 13:07:34,396 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:34,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:34,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:34,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:34,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:34,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:07:34,509 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:07:34,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:07:34,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:34,510 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand 8 states. [2019-09-20 13:07:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:34,549 INFO L93 Difference]: Finished difference Result 457 states and 527 transitions. [2019-09-20 13:07:34,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:07:34,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-09-20 13:07:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:34,551 INFO L225 Difference]: With dead ends: 457 [2019-09-20 13:07:34,551 INFO L226 Difference]: Without dead ends: 246 [2019-09-20 13:07:34,553 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:07:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2019-09-20 13:07:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 243. [2019-09-20 13:07:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2019-09-20 13:07:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2019-09-20 13:07:34,578 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 108 [2019-09-20 13:07:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:34,579 INFO L475 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2019-09-20 13:07:34,579 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:07:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2019-09-20 13:07:34,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:07:34,582 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:34,582 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:34,582 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:34,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:34,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1329978085, now seen corresponding path program 1 times [2019-09-20 13:07:34,583 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:34,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:34,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:34,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:34,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:34,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:07:34,700 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:07:34,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:07:34,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:34,701 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand 4 states. [2019-09-20 13:07:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:34,947 INFO L93 Difference]: Finished difference Result 695 states and 818 transitions. [2019-09-20 13:07:34,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:07:34,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-09-20 13:07:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:34,952 INFO L225 Difference]: With dead ends: 695 [2019-09-20 13:07:34,952 INFO L226 Difference]: Without dead ends: 480 [2019-09-20 13:07:34,953 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:07:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2019-09-20 13:07:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 471. [2019-09-20 13:07:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2019-09-20 13:07:34,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 544 transitions. [2019-09-20 13:07:34,985 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 544 transitions. Word has length 108 [2019-09-20 13:07:34,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:34,985 INFO L475 AbstractCegarLoop]: Abstraction has 471 states and 544 transitions. [2019-09-20 13:07:34,985 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:07:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 544 transitions. [2019-09-20 13:07:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:07:34,990 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:34,991 INFO L407 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:34,991 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:34,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash 825673247, now seen corresponding path program 1 times [2019-09-20 13:07:34,993 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:34,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:34,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:34,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:34,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:35,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:35,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:07:35,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:07:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:07:35,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:07:35,177 INFO L87 Difference]: Start difference. First operand 471 states and 544 transitions. Second operand 9 states. [2019-09-20 13:07:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:36,293 INFO L93 Difference]: Finished difference Result 1244 states and 1500 transitions. [2019-09-20 13:07:36,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:36,297 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-20 13:07:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:36,302 INFO L225 Difference]: With dead ends: 1244 [2019-09-20 13:07:36,302 INFO L226 Difference]: Without dead ends: 873 [2019-09-20 13:07:36,304 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2019-09-20 13:07:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 792. [2019-09-20 13:07:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2019-09-20 13:07:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 904 transitions. [2019-09-20 13:07:36,355 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 904 transitions. Word has length 112 [2019-09-20 13:07:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:36,356 INFO L475 AbstractCegarLoop]: Abstraction has 792 states and 904 transitions. [2019-09-20 13:07:36,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:07:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 904 transitions. [2019-09-20 13:07:36,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-20 13:07:36,359 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:36,360 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:07:36,360 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1258980138, now seen corresponding path program 1 times [2019-09-20 13:07:36,361 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:36,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:36,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:36,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:36,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-20 13:07:36,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:36,508 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:36,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:36,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:07:36,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:07:37,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:37,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:07:37,008 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:07:37,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:07:37,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:07:37,009 INFO L87 Difference]: Start difference. First operand 792 states and 904 transitions. Second operand 16 states. [2019-09-20 13:07:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:38,730 INFO L93 Difference]: Finished difference Result 1796 states and 2127 transitions. [2019-09-20 13:07:38,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-20 13:07:38,731 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2019-09-20 13:07:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:38,739 INFO L225 Difference]: With dead ends: 1796 [2019-09-20 13:07:38,739 INFO L226 Difference]: Without dead ends: 1102 [2019-09-20 13:07:38,743 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2019-09-20 13:07:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2019-09-20 13:07:38,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 958. [2019-09-20 13:07:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2019-09-20 13:07:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1104 transitions. [2019-09-20 13:07:38,809 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1104 transitions. Word has length 172 [2019-09-20 13:07:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:38,810 INFO L475 AbstractCegarLoop]: Abstraction has 958 states and 1104 transitions. [2019-09-20 13:07:38,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:07:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1104 transitions. [2019-09-20 13:07:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-09-20 13:07:38,817 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:38,817 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2019-09-20 13:07:38,817 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:38,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1854852748, now seen corresponding path program 1 times [2019-09-20 13:07:38,818 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:38,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:38,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:38,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:38,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2019-09-20 13:07:39,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:39,106 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:39,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:39,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:07:39,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 234 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-20 13:07:39,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:39,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:07:39,667 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:07:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:07:39,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:07:39,668 INFO L87 Difference]: Start difference. First operand 958 states and 1104 transitions. Second operand 19 states. [2019-09-20 13:07:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:46,179 INFO L93 Difference]: Finished difference Result 3564 states and 4925 transitions. [2019-09-20 13:07:46,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-20 13:07:46,179 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 307 [2019-09-20 13:07:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:46,199 INFO L225 Difference]: With dead ends: 3564 [2019-09-20 13:07:46,200 INFO L226 Difference]: Without dead ends: 2642 [2019-09-20 13:07:46,207 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=607, Invalid=3815, Unknown=0, NotChecked=0, Total=4422 [2019-09-20 13:07:46,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2019-09-20 13:07:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1831. [2019-09-20 13:07:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1831 states. [2019-09-20 13:07:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2042 transitions. [2019-09-20 13:07:46,353 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2042 transitions. Word has length 307 [2019-09-20 13:07:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:46,353 INFO L475 AbstractCegarLoop]: Abstraction has 1831 states and 2042 transitions. [2019-09-20 13:07:46,353 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:07:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2042 transitions. [2019-09-20 13:07:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-09-20 13:07:46,362 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:46,362 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2019-09-20 13:07:46,363 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:46,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1600071868, now seen corresponding path program 1 times [2019-09-20 13:07:46,363 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:46,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:46,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 98 proven. 55 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-20 13:07:46,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:46,573 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:46,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:46,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:07:46,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 269 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-20 13:07:47,034 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:47,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:07:47,036 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:47,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:47,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:47,036 INFO L87 Difference]: Start difference. First operand 1831 states and 2042 transitions. Second operand 20 states. [2019-09-20 13:07:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:48,976 INFO L93 Difference]: Finished difference Result 3462 states and 3879 transitions. [2019-09-20 13:07:48,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:07:48,977 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 323 [2019-09-20 13:07:48,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:48,992 INFO L225 Difference]: With dead ends: 3462 [2019-09-20 13:07:48,992 INFO L226 Difference]: Without dead ends: 1835 [2019-09-20 13:07:49,000 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2019-09-20 13:07:49,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1831. [2019-09-20 13:07:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1831 states. [2019-09-20 13:07:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2037 transitions. [2019-09-20 13:07:49,255 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2037 transitions. Word has length 323 [2019-09-20 13:07:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:49,256 INFO L475 AbstractCegarLoop]: Abstraction has 1831 states and 2037 transitions. [2019-09-20 13:07:49,256 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2037 transitions. [2019-09-20 13:07:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2019-09-20 13:07:49,271 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:49,272 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2019-09-20 13:07:49,272 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:49,273 INFO L82 PathProgramCache]: Analyzing trace with hash 756710819, now seen corresponding path program 1 times [2019-09-20 13:07:49,273 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:49,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:49,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:49,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:49,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2019-09-20 13:07:49,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:49,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-20 13:07:49,566 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:07:49,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:07:49,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:07:49,567 INFO L87 Difference]: Start difference. First operand 1831 states and 2037 transitions. Second operand 13 states. [2019-09-20 13:07:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:50,677 INFO L93 Difference]: Finished difference Result 3360 states and 3763 transitions. [2019-09-20 13:07:50,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:07:50,678 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 324 [2019-09-20 13:07:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:50,688 INFO L225 Difference]: With dead ends: 3360 [2019-09-20 13:07:50,689 INFO L226 Difference]: Without dead ends: 1733 [2019-09-20 13:07:50,694 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-09-20 13:07:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2019-09-20 13:07:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1696. [2019-09-20 13:07:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2019-09-20 13:07:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 1878 transitions. [2019-09-20 13:07:50,789 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 1878 transitions. Word has length 324 [2019-09-20 13:07:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:50,790 INFO L475 AbstractCegarLoop]: Abstraction has 1696 states and 1878 transitions. [2019-09-20 13:07:50,790 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:07:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 1878 transitions. [2019-09-20 13:07:50,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2019-09-20 13:07:50,798 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:50,799 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2019-09-20 13:07:50,799 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:50,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:50,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1494378045, now seen corresponding path program 1 times [2019-09-20 13:07:50,800 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:50,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:50,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:50,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 94 proven. 46 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2019-09-20 13:07:51,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:51,137 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:51,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:51,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:07:51,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 197 proven. 16 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-09-20 13:07:51,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:51,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:07:51,524 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:07:51,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:07:51,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:07:51,527 INFO L87 Difference]: Start difference. First operand 1696 states and 1878 transitions. Second operand 14 states. [2019-09-20 13:07:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:54,025 INFO L93 Difference]: Finished difference Result 3698 states and 4456 transitions. [2019-09-20 13:07:54,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:07:54,026 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 328 [2019-09-20 13:07:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:54,042 INFO L225 Difference]: With dead ends: 3698 [2019-09-20 13:07:54,042 INFO L226 Difference]: Without dead ends: 2754 [2019-09-20 13:07:54,046 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:07:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2019-09-20 13:07:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2130. [2019-09-20 13:07:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2130 states. [2019-09-20 13:07:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2367 transitions. [2019-09-20 13:07:54,209 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2367 transitions. Word has length 328 [2019-09-20 13:07:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:54,210 INFO L475 AbstractCegarLoop]: Abstraction has 2130 states and 2367 transitions. [2019-09-20 13:07:54,210 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:07:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2367 transitions. [2019-09-20 13:07:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2019-09-20 13:07:54,229 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:54,229 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2019-09-20 13:07:54,230 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:54,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1453056268, now seen corresponding path program 1 times [2019-09-20 13:07:54,230 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:54,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:54,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:54,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:54,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 178 proven. 23 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-09-20 13:07:54,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:07:54,612 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:07:54,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:54,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 42 conjunts are in the unsatisfiable core [2019-09-20 13:07:54,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:07:55,272 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 247 proven. 51 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2019-09-20 13:07:55,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:07:55,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 20 [2019-09-20 13:07:55,280 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:07:55,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:07:55,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:07:55,280 INFO L87 Difference]: Start difference. First operand 2130 states and 2367 transitions. Second operand 20 states. [2019-09-20 13:07:57,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:07:57,503 INFO L93 Difference]: Finished difference Result 3442 states and 3846 transitions. [2019-09-20 13:07:57,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-20 13:07:57,504 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 397 [2019-09-20 13:07:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:07:57,506 INFO L225 Difference]: With dead ends: 3442 [2019-09-20 13:07:57,507 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:07:57,527 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 398 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2019-09-20 13:07:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:07:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:07:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:07:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:07:57,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 397 [2019-09-20 13:07:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:07:57,530 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:07:57,530 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:07:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:07:57,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:07:57,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:07:58,500 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 171 [2019-09-20 13:07:59,443 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 80 [2019-09-20 13:07:59,609 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 119 [2019-09-20 13:08:00,219 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 132 [2019-09-20 13:08:00,793 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 171