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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:23:45,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:23:45,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:23:45,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:23:45,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:23:45,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:23:45,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:23:45,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:23:45,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:23:45,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:23:45,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:23:45,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:23:45,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:23:45,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:23:45,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:23:45,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:23:45,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:23:45,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:23:45,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:23:45,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:23:45,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:23:45,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:23:45,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:23:45,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:23:45,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:23:45,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:23:45,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:23:45,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:23:45,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:23:45,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:23:45,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:23:45,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:23:45,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:23:45,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:23:45,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:23:45,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:23:45,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:23:45,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:23:45,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:23:45,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:23:45,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:23:45,551 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 [2019-10-15 03:23:45,567 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:23:45,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:23:45,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:23:45,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:23:45,569 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:23:45,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:23:45,569 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:23:45,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:23:45,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:23:45,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:23:45,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:23:45,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:23:45,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:23:45,571 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:23:45,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:23:45,571 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:23:45,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:23:45,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:23:45,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:23:45,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:23:45,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:23:45,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:45,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:23:45,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:23:45,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:23:45,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:23:45,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:23:45,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:23:45,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:23:45,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:23:45,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:23:45,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:23:45,864 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:23:45,865 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:23:45,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2019-10-15 03:23:45,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b782b2e/9844f33d350d491ebb734fd9ea7ba764/FLAGdaff867dd [2019-10-15 03:23:46,518 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:23:46,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2019-10-15 03:23:46,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b782b2e/9844f33d350d491ebb734fd9ea7ba764/FLAGdaff867dd [2019-10-15 03:23:46,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b782b2e/9844f33d350d491ebb734fd9ea7ba764 [2019-10-15 03:23:46,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:23:46,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:23:46,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:46,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:23:46,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:23:46,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:46" (1/1) ... [2019-10-15 03:23:46,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66cd572e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:46, skipping insertion in model container [2019-10-15 03:23:46,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:46" (1/1) ... [2019-10-15 03:23:46,823 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:23:46,891 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:23:47,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:47,392 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:23:47,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:47,522 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:23:47,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47 WrapperNode [2019-10-15 03:23:47,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:47,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:23:47,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:23:47,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:23:47,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (1/1) ... [2019-10-15 03:23:47,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:23:47,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:23:47,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:23:47,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:23:47,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (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 [2019-10-15 03:23:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:23:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:23:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:47,731 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:23:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:23:47,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:23:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:23:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:23:47,734 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:23:47,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:23:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:23:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:23:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:23:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:23:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:23:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:23:47,739 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:23:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:47,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:23:47,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:23:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:23:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:23:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:23:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:23:47,742 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:23:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:23:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:23:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:23:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:23:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:23:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:23:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:23:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:23:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:23:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:23:47,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:23:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:23:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:23:47,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:23:47,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:23:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:23:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:23:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:23:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:23:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:23:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:23:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:23:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:23:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:23:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:23:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:23:47,748 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:23:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:23:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:23:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:23:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:23:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:23:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:23:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:23:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:23:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:23:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:23:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:23:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:23:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:23:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:23:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:23:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:23:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:23:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:23:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:23:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:23:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:23:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:23:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:23:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:23:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:23:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:23:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:23:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:23:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:23:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:23:49,443 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:23:49,443 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:23:49,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:49 BoogieIcfgContainer [2019-10-15 03:23:49,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:23:49,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:23:49,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:23:49,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:23:49,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:46" (1/3) ... [2019-10-15 03:23:49,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8411a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:49, skipping insertion in model container [2019-10-15 03:23:49,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:47" (2/3) ... [2019-10-15 03:23:49,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8411a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:49, skipping insertion in model container [2019-10-15 03:23:49,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:49" (3/3) ... [2019-10-15 03:23:49,453 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2019-10-15 03:23:49,463 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:23:49,472 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:23:49,484 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:23:49,512 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:23:49,512 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:23:49,512 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:23:49,512 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:23:49,512 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:23:49,513 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:23:49,513 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:23:49,513 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:23:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-10-15 03:23:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:23:49,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:49,549 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:23:49,551 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:49,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:49,559 INFO L82 PathProgramCache]: Analyzing trace with hash 834246449, now seen corresponding path program 1 times [2019-10-15 03:23:49,571 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:49,572 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202546670] [2019-10-15 03:23:49,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:49,572 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:49,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:49,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202546670] [2019-10-15 03:23:49,898 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:49,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:23:49,899 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358725953] [2019-10-15 03:23:49,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:23:49,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:49,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:23:49,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:49,922 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2019-10-15 03:23:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:49,969 INFO L93 Difference]: Finished difference Result 270 states and 325 transitions. [2019-10-15 03:23:49,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:23:49,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:23:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:49,986 INFO L225 Difference]: With dead ends: 270 [2019-10-15 03:23:49,987 INFO L226 Difference]: Without dead ends: 137 [2019-10-15 03:23:49,992 INFO L600 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 [2019-10-15 03:23:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-10-15 03:23:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-10-15 03:23:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-15 03:23:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2019-10-15 03:23:50,059 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 52 [2019-10-15 03:23:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:50,059 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2019-10-15 03:23:50,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:23:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2019-10-15 03:23:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:23:50,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:50,064 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:23:50,064 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:50,065 INFO L82 PathProgramCache]: Analyzing trace with hash -640305549, now seen corresponding path program 1 times [2019-10-15 03:23:50,065 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:50,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923219964] [2019-10-15 03:23:50,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:50,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:50,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:50,231 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923219964] [2019-10-15 03:23:50,231 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:50,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:23:50,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144981094] [2019-10-15 03:23:50,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:23:50,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:50,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:23:50,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:50,235 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand 3 states. [2019-10-15 03:23:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:50,261 INFO L93 Difference]: Finished difference Result 218 states and 250 transitions. [2019-10-15 03:23:50,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:23:50,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:23:50,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:50,265 INFO L225 Difference]: With dead ends: 218 [2019-10-15 03:23:50,265 INFO L226 Difference]: Without dead ends: 129 [2019-10-15 03:23:50,267 INFO L600 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 [2019-10-15 03:23:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-10-15 03:23:50,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-10-15 03:23:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-15 03:23:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 147 transitions. [2019-10-15 03:23:50,284 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 147 transitions. Word has length 53 [2019-10-15 03:23:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:50,284 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 147 transitions. [2019-10-15 03:23:50,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:23:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 147 transitions. [2019-10-15 03:23:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 03:23:50,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:50,288 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:23:50,288 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:50,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:50,288 INFO L82 PathProgramCache]: Analyzing trace with hash -462781966, now seen corresponding path program 1 times [2019-10-15 03:23:50,289 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:50,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353477066] [2019-10-15 03:23:50,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:50,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:50,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:50,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353477066] [2019-10-15 03:23:50,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:50,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:50,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025919281] [2019-10-15 03:23:50,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:50,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:50,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:50,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:50,458 INFO L87 Difference]: Start difference. First operand 129 states and 147 transitions. Second operand 7 states. [2019-10-15 03:23:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:51,020 INFO L93 Difference]: Finished difference Result 387 states and 458 transitions. [2019-10-15 03:23:51,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:23:51,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-15 03:23:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:51,033 INFO L225 Difference]: With dead ends: 387 [2019-10-15 03:23:51,033 INFO L226 Difference]: Without dead ends: 283 [2019-10-15 03:23:51,035 INFO L600 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 [2019-10-15 03:23:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-10-15 03:23:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 271. [2019-10-15 03:23:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-10-15 03:23:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 320 transitions. [2019-10-15 03:23:51,124 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 320 transitions. Word has length 57 [2019-10-15 03:23:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:51,124 INFO L462 AbstractCegarLoop]: Abstraction has 271 states and 320 transitions. [2019-10-15 03:23:51,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 320 transitions. [2019-10-15 03:23:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:23:51,128 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:51,128 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:23:51,128 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:51,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:51,129 INFO L82 PathProgramCache]: Analyzing trace with hash -831502054, now seen corresponding path program 1 times [2019-10-15 03:23:51,129 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:51,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061959469] [2019-10-15 03:23:51,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:51,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:51,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:23:51,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061959469] [2019-10-15 03:23:51,312 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:51,312 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:51,312 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683036920] [2019-10-15 03:23:51,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:51,313 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:51,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:51,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:51,314 INFO L87 Difference]: Start difference. First operand 271 states and 320 transitions. Second operand 7 states. [2019-10-15 03:23:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:52,034 INFO L93 Difference]: Finished difference Result 690 states and 885 transitions. [2019-10-15 03:23:52,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:23:52,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:23:52,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:52,041 INFO L225 Difference]: With dead ends: 690 [2019-10-15 03:23:52,041 INFO L226 Difference]: Without dead ends: 444 [2019-10-15 03:23:52,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:23:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-15 03:23:52,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 393. [2019-10-15 03:23:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-10-15 03:23:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 464 transitions. [2019-10-15 03:23:52,120 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 464 transitions. Word has length 61 [2019-10-15 03:23:52,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:52,120 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 464 transitions. [2019-10-15 03:23:52,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 464 transitions. [2019-10-15 03:23:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 03:23:52,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:52,125 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:23:52,125 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:52,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:52,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1533788192, now seen corresponding path program 1 times [2019-10-15 03:23:52,126 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:52,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897719183] [2019-10-15 03:23:52,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:52,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:52,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:52,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897719183] [2019-10-15 03:23:52,446 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:52,447 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:23:52,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648342341] [2019-10-15 03:23:52,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:23:52,447 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:52,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:23:52,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:23:52,448 INFO L87 Difference]: Start difference. First operand 393 states and 464 transitions. Second operand 12 states. [2019-10-15 03:23:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:53,337 INFO L93 Difference]: Finished difference Result 1170 states and 1427 transitions. [2019-10-15 03:23:53,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:23:53,338 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2019-10-15 03:23:53,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:53,343 INFO L225 Difference]: With dead ends: 1170 [2019-10-15 03:23:53,344 INFO L226 Difference]: Without dead ends: 802 [2019-10-15 03:23:53,347 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2019-10-15 03:23:53,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 780. [2019-10-15 03:23:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-10-15 03:23:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 941 transitions. [2019-10-15 03:23:53,415 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 941 transitions. Word has length 92 [2019-10-15 03:23:53,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:53,416 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 941 transitions. [2019-10-15 03:23:53,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:23:53,416 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 941 transitions. [2019-10-15 03:23:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 03:23:53,420 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:53,420 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:23:53,421 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:53,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1527193909, now seen corresponding path program 1 times [2019-10-15 03:23:53,422 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:53,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617933731] [2019-10-15 03:23:53,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:53,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:53,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:53,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617933731] [2019-10-15 03:23:53,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:53,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:23:53,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515261728] [2019-10-15 03:23:53,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:23:53,572 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:53,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:23:53,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:23:53,616 INFO L87 Difference]: Start difference. First operand 780 states and 941 transitions. Second operand 9 states. [2019-10-15 03:23:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:54,663 INFO L93 Difference]: Finished difference Result 2516 states and 3144 transitions. [2019-10-15 03:23:54,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:23:54,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2019-10-15 03:23:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:54,676 INFO L225 Difference]: With dead ends: 2516 [2019-10-15 03:23:54,676 INFO L226 Difference]: Without dead ends: 1923 [2019-10-15 03:23:54,680 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2019-10-15 03:23:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1643. [2019-10-15 03:23:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2019-10-15 03:23:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2001 transitions. [2019-10-15 03:23:54,828 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2001 transitions. Word has length 95 [2019-10-15 03:23:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:54,829 INFO L462 AbstractCegarLoop]: Abstraction has 1643 states and 2001 transitions. [2019-10-15 03:23:54,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:23:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2001 transitions. [2019-10-15 03:23:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 03:23:54,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:54,834 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:54,834 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:54,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:54,835 INFO L82 PathProgramCache]: Analyzing trace with hash 729883461, now seen corresponding path program 1 times [2019-10-15 03:23:54,835 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:54,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642711276] [2019-10-15 03:23:54,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:54,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:54,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:23:54,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642711276] [2019-10-15 03:23:54,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695547185] [2019-10-15 03:23:54,997 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 [2019-10-15 03:23:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:55,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:23:55,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:23:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:23:55,441 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:23:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:23:55,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1678631073] [2019-10-15 03:23:56,032 INFO L162 IcfgInterpreter]: Started Sifa with 114 locations of interest [2019-10-15 03:23:56,032 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:23:56,042 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:23:56,058 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:23:56,059 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:24:04,510 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:24:06,091 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:24:06,265 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:06,393 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:06,505 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:06,797 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:07,065 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:07,249 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:07,437 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:07,831 WARN L191 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:24:07,992 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:08,127 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:08,273 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:08,384 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:08,499 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:08,508 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:24:08,785 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:24:08,929 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:09,041 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:09,173 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,412 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:09,618 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,759 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:09,867 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:10,005 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,338 WARN L191 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:24:10,466 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:10,616 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,729 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:10,972 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:11,085 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:11,327 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:11,555 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:11,707 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:12,019 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:12,332 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:12,459 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:12,676 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:12,992 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,095 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:13,230 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:13,353 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,558 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:13,677 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,832 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:13,943 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,086 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,291 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:14,401 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,527 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,639 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,752 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:14,873 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:15,052 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:15,166 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:15,299 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:15,427 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:15,540 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:15,808 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:16,034 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:16,147 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:16,286 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:16,411 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:16,524 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:16,649 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:16,765 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:16,887 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:17,019 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:17,162 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:17,300 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:17,429 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:17,650 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:17,763 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:17,909 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:18,027 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:18,141 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:18,266 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:18,489 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:18,607 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:18,740 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:18,965 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:19,077 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:19,206 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:19,320 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:19,447 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:19,574 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:19,706 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:19,819 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:19,952 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,075 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,215 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,339 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,453 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,567 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,694 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:20,907 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-15 03:24:21,019 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:21,148 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:21,342 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-15 03:24:21,458 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:21,595 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:21,835 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:21,949 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:22,073 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:22,275 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:22,392 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:22,516 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:22,626 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:22,739 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:22,863 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:23,084 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:23,195 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:23,325 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:23,529 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:23,641 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:23,767 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:23,878 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:23,989 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,123 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:24,333 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:24,446 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:24,578 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:24,697 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:24,813 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:24,939 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:25,128 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:25,240 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:25,366 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:25,558 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:25,669 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:25,795 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:26,007 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:26,119 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:26,249 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:26,583 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:26,709 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:26,834 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:26,944 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:27,054 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:27,171 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:27,295 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568