java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:38:42,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:38:42,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:38:42,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:38:42,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:38:42,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:38:42,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:38:42,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:38:42,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:38:42,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:38:42,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:38:42,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:38:42,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:38:42,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:38:42,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:38:42,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:38:42,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:38:42,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:38:42,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:38:42,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:38:42,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:38:42,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:38:42,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:38:42,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:38:42,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:38:42,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:38:42,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:38:42,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:38:42,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:38:42,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:38:42,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:38:42,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:38:42,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:38:42,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:38:42,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:38:42,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:38:42,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:38:42,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:38:42,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:38:42,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:38:42,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:38:42,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:38:42,589 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:38:42,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:38:42,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:38:42,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:38:42,597 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:38:42,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:38:42,598 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:38:42,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:38:42,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:38:42,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:38:42,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:38:42,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:38:42,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:38:42,599 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:38:42,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:38:42,599 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:38:42,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:38:42,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:38:42,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:38:42,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:38:42,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:38:42,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:38:42,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:38:42,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:38:42,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:38:42,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:38:42,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:38:42,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:38:42,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:38:42,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:38:42,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:38:42,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:38:42,887 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:38:42,888 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:38:42,889 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-10-14 23:38:42,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125dd935c/513df8d5be6f49218587f900371c7ae8/FLAGb81450393 [2019-10-14 23:38:43,508 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:38:43,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-10-14 23:38:43,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125dd935c/513df8d5be6f49218587f900371c7ae8/FLAGb81450393 [2019-10-14 23:38:43,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125dd935c/513df8d5be6f49218587f900371c7ae8 [2019-10-14 23:38:43,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:38:43,795 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:38:43,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:43,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:38:43,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:38:43,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d46bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:43, skipping insertion in model container [2019-10-14 23:38:43,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:43" (1/1) ... [2019-10-14 23:38:43,818 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:38:43,865 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:38:44,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:44,382 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:38:44,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:38:44,560 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:38:44,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44 WrapperNode [2019-10-14 23:38:44,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:38:44,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:38:44,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:38:44,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:38:44,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... [2019-10-14 23:38:44,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:38:44,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:38:44,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:38:44,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:38:44,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:38:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:38:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:38:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:44,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:44,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:38:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:38:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:38:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:38:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:38:44,747 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:38:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:44,748 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-14 23:38:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:38:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:38:44,751 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:38:44,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:38:44,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:38:44,751 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:38:44,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:38:44,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:38:44,752 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:38:44,752 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:38:44,752 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:38:44,752 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:38:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:38:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:38:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:38:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:38:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:38:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:38:44,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:38:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:38:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:38:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:38:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:38:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:38:44,754 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:38:44,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:38:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:38:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:38:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:38:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:38:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:38:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:38:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:38:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:38:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:38:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:38:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:38:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:38:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:38:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:38:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:38:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:38:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:38:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:38:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:38:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:38:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:38:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:38:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:38:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:38:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:38:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:38:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:38:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:38:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:38:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:38:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:38:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:38:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:38:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:38:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:38:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:38:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:38:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:38:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:38:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:38:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-14 23:38:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:38:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:38:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:38:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:38:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:38:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:38:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:38:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:38:44,765 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:38:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:38:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:38:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:38:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:38:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:38:45,963 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:38:45,965 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:38:45,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:45 BoogieIcfgContainer [2019-10-14 23:38:45,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:38:45,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:38:45,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:38:45,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:38:45,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:38:43" (1/3) ... [2019-10-14 23:38:45,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234f7247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:45, skipping insertion in model container [2019-10-14 23:38:45,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:44" (2/3) ... [2019-10-14 23:38:45,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234f7247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:45, skipping insertion in model container [2019-10-14 23:38:45,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:45" (3/3) ... [2019-10-14 23:38:45,978 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2019-10-14 23:38:45,988 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:38:45,997 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:38:46,009 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:38:46,036 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:38:46,036 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:38:46,037 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:38:46,037 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:38:46,037 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:38:46,037 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:38:46,038 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:38:46,038 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:38:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-14 23:38:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:38:46,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:46,074 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:46,076 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:46,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1045855625, now seen corresponding path program 1 times [2019-10-14 23:38:46,094 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:46,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592889554] [2019-10-14 23:38:46,094 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:46,095 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:46,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:46,858 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:46,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592889554] [2019-10-14 23:38:46,977 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:46,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:38:46,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51196113] [2019-10-14 23:38:46,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:38:46,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:47,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:38:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:38:47,007 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2019-10-14 23:38:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:48,217 INFO L93 Difference]: Finished difference Result 335 states and 435 transitions. [2019-10-14 23:38:48,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:38:48,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:38:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:48,234 INFO L225 Difference]: With dead ends: 335 [2019-10-14 23:38:48,234 INFO L226 Difference]: Without dead ends: 180 [2019-10-14 23:38:48,239 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:38:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-10-14 23:38:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2019-10-14 23:38:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-10-14 23:38:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2019-10-14 23:38:48,349 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 46 [2019-10-14 23:38:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:48,349 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2019-10-14 23:38:48,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:38:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2019-10-14 23:38:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:38:48,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:48,353 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:48,353 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:48,354 INFO L82 PathProgramCache]: Analyzing trace with hash -334246685, now seen corresponding path program 1 times [2019-10-14 23:38:48,354 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:48,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518982284] [2019-10-14 23:38:48,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:48,355 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:48,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,717 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:48,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518982284] [2019-10-14 23:38:48,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:48,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:38:48,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226495190] [2019-10-14 23:38:48,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:38:48,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:48,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:38:48,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:38:48,756 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 4 states. [2019-10-14 23:38:49,226 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:50,211 INFO L93 Difference]: Finished difference Result 268 states and 326 transitions. [2019-10-14 23:38:50,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:38:50,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:38:50,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:50,215 INFO L225 Difference]: With dead ends: 268 [2019-10-14 23:38:50,215 INFO L226 Difference]: Without dead ends: 164 [2019-10-14 23:38:50,217 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:38:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-14 23:38:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-10-14 23:38:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-14 23:38:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-10-14 23:38:50,258 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 47 [2019-10-14 23:38:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:50,259 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-10-14 23:38:50,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:38:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-10-14 23:38:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:38:50,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:50,261 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:50,262 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:50,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:50,262 INFO L82 PathProgramCache]: Analyzing trace with hash 20699943, now seen corresponding path program 1 times [2019-10-14 23:38:50,262 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:50,263 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343213218] [2019-10-14 23:38:50,263 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:50,263 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:50,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:50,607 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:50,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343213218] [2019-10-14 23:38:50,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:50,662 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:38:50,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779827425] [2019-10-14 23:38:50,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:38:50,663 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:50,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:38:50,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:38:50,664 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 4 states. [2019-10-14 23:38:50,991 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:51,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:51,954 INFO L93 Difference]: Finished difference Result 277 states and 340 transitions. [2019-10-14 23:38:51,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:38:51,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:38:51,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:51,958 INFO L225 Difference]: With dead ends: 277 [2019-10-14 23:38:51,959 INFO L226 Difference]: Without dead ends: 164 [2019-10-14 23:38:51,960 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:38:51,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-14 23:38:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-10-14 23:38:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-14 23:38:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2019-10-14 23:38:51,992 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 51 [2019-10-14 23:38:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:51,992 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2019-10-14 23:38:51,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:38:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2019-10-14 23:38:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-14 23:38:51,995 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:51,996 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:51,996 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:51,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:51,996 INFO L82 PathProgramCache]: Analyzing trace with hash 134260403, now seen corresponding path program 1 times [2019-10-14 23:38:51,997 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:51,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116836155] [2019-10-14 23:38:51,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:51,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:51,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,380 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:52,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116836155] [2019-10-14 23:38:52,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:52,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:38:52,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432852021] [2019-10-14 23:38:52,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:38:52,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:52,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:38:52,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:38:52,472 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 6 states. [2019-10-14 23:38:52,925 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:54,219 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:38:55,081 INFO L93 Difference]: Finished difference Result 375 states and 463 transitions. [2019-10-14 23:38:55,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:38:55,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2019-10-14 23:38:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:38:55,084 INFO L225 Difference]: With dead ends: 375 [2019-10-14 23:38:55,085 INFO L226 Difference]: Without dead ends: 262 [2019-10-14 23:38:55,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:38:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2019-10-14 23:38:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 221. [2019-10-14 23:38:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-10-14 23:38:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 250 transitions. [2019-10-14 23:38:55,146 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 250 transitions. Word has length 69 [2019-10-14 23:38:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:38:55,146 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 250 transitions. [2019-10-14 23:38:55,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:38:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 250 transitions. [2019-10-14 23:38:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:38:55,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:38:55,150 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:38:55,150 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:38:55,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:38:55,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1484828875, now seen corresponding path program 1 times [2019-10-14 23:38:55,151 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:38:55,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538058739] [2019-10-14 23:38:55,151 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:55,151 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:38:55,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:38:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,556 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:38:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:38:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:38:55,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538058739] [2019-10-14 23:38:55,693 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:38:55,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:38:55,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940954548] [2019-10-14 23:38:55,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:38:55,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:38:55,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:38:55,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:38:55,695 INFO L87 Difference]: Start difference. First operand 221 states and 250 transitions. Second operand 12 states. [2019-10-14 23:38:56,391 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:38:56,778 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:57,075 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:57,393 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:58,051 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:38:59,193 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:38:59,517 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:38:59,793 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:00,086 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:00,399 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:00,736 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:02,131 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:02,554 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:03,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:03,762 INFO L93 Difference]: Finished difference Result 762 states and 974 transitions. [2019-10-14 23:39:03,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:03,765 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-10-14 23:39:03,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:03,770 INFO L225 Difference]: With dead ends: 762 [2019-10-14 23:39:03,770 INFO L226 Difference]: Without dead ends: 565 [2019-10-14 23:39:03,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2019-10-14 23:39:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 507. [2019-10-14 23:39:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-10-14 23:39:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 594 transitions. [2019-10-14 23:39:03,902 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 594 transitions. Word has length 83 [2019-10-14 23:39:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:03,904 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 594 transitions. [2019-10-14 23:39:03,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 594 transitions. [2019-10-14 23:39:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-14 23:39:03,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:03,911 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:39:03,911 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:03,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:03,911 INFO L82 PathProgramCache]: Analyzing trace with hash -638767917, now seen corresponding path program 1 times [2019-10-14 23:39:03,912 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:03,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873688528] [2019-10-14 23:39:03,912 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:03,912 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:03,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,257 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:39:04,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873688528] [2019-10-14 23:39:04,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89100343] [2019-10-14 23:39:04,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:04,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:39:04,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:04,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:04,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-14 23:39:04,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596712043] [2019-10-14 23:39:04,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:04,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:04,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:04,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:39:04,951 INFO L87 Difference]: Start difference. First operand 507 states and 594 transitions. Second operand 8 states. [2019-10-14 23:39:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:06,425 INFO L93 Difference]: Finished difference Result 1294 states and 1682 transitions. [2019-10-14 23:39:06,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:39:06,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2019-10-14 23:39:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:06,440 INFO L225 Difference]: With dead ends: 1294 [2019-10-14 23:39:06,441 INFO L226 Difference]: Without dead ends: 918 [2019-10-14 23:39:06,443 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:39:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2019-10-14 23:39:06,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 844. [2019-10-14 23:39:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2019-10-14 23:39:06,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1035 transitions. [2019-10-14 23:39:06,662 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1035 transitions. Word has length 139 [2019-10-14 23:39:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:06,663 INFO L462 AbstractCegarLoop]: Abstraction has 844 states and 1035 transitions. [2019-10-14 23:39:06,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1035 transitions. [2019-10-14 23:39:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-14 23:39:06,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:06,668 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:06,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:06,875 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:06,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:06,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2031940663, now seen corresponding path program 1 times [2019-10-14 23:39:06,877 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:06,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543008011] [2019-10-14 23:39:06,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:06,878 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:06,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,163 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:39:07,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543008011] [2019-10-14 23:39:07,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772201449] [2019-10-14 23:39:07,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:07,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:07,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:39:07,549 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:07,549 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-14 23:39:07,549 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813855207] [2019-10-14 23:39:07,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:07,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:07,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:07,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:39:07,551 INFO L87 Difference]: Start difference. First operand 844 states and 1035 transitions. Second operand 6 states. [2019-10-14 23:39:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:07,736 INFO L93 Difference]: Finished difference Result 1684 states and 2114 transitions. [2019-10-14 23:39:07,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:39:07,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2019-10-14 23:39:07,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:07,743 INFO L225 Difference]: With dead ends: 1684 [2019-10-14 23:39:07,743 INFO L226 Difference]: Without dead ends: 864 [2019-10-14 23:39:07,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2019-10-14 23:39:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2019-10-14 23:39:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2019-10-14 23:39:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1059 transitions. [2019-10-14 23:39:07,932 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1059 transitions. Word has length 131 [2019-10-14 23:39:07,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:07,932 INFO L462 AbstractCegarLoop]: Abstraction has 864 states and 1059 transitions. [2019-10-14 23:39:07,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1059 transitions. [2019-10-14 23:39:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-14 23:39:07,937 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:07,937 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:08,142 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:08,142 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:08,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1791700917, now seen corresponding path program 1 times [2019-10-14 23:39:08,145 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:08,145 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526714155] [2019-10-14 23:39:08,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:08,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:08,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,543 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:39:08,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526714155] [2019-10-14 23:39:08,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140331739] [2019-10-14 23:39:08,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:39:08,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:39:09,065 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:09,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-10-14 23:39:09,065 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433265952] [2019-10-14 23:39:09,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:39:09,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:09,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:39:09,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:09,069 INFO L87 Difference]: Start difference. First operand 864 states and 1059 transitions. Second operand 5 states. [2019-10-14 23:39:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:09,237 INFO L93 Difference]: Finished difference Result 1573 states and 1972 transitions. [2019-10-14 23:39:09,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:09,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2019-10-14 23:39:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:09,242 INFO L225 Difference]: With dead ends: 1573 [2019-10-14 23:39:09,243 INFO L226 Difference]: Without dead ends: 733 [2019-10-14 23:39:09,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:09,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2019-10-14 23:39:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2019-10-14 23:39:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2019-10-14 23:39:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 883 transitions. [2019-10-14 23:39:09,384 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 883 transitions. Word has length 131 [2019-10-14 23:39:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:09,385 INFO L462 AbstractCegarLoop]: Abstraction has 733 states and 883 transitions. [2019-10-14 23:39:09,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:39:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 883 transitions. [2019-10-14 23:39:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-14 23:39:09,387 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:09,387 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:09,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:09,601 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:09,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:09,602 INFO L82 PathProgramCache]: Analyzing trace with hash 900713074, now seen corresponding path program 1 times [2019-10-14 23:39:09,602 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:09,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748000346] [2019-10-14 23:39:09,603 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:09,603 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:09,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,023 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:39:10,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748000346] [2019-10-14 23:39:10,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209379694] [2019-10-14 23:39:10,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:10,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:10,596 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:10,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-10-14 23:39:10,597 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377079140] [2019-10-14 23:39:10,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-14 23:39:10,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:10,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-14 23:39:10,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:39:10,600 INFO L87 Difference]: Start difference. First operand 733 states and 883 transitions. Second operand 20 states. [2019-10-14 23:39:11,482 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:12,348 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:12,673 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:13,396 WARN L191 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:15,764 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:16,205 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:16,567 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:16,872 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:17,467 WARN L191 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2019-10-14 23:39:17,808 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:18,276 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:18,566 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:18,877 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:19,492 WARN L191 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2019-10-14 23:39:19,852 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-14 23:39:20,176 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192