/usr/bin/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_spec2_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:30:39,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:30:39,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:30:39,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:30:39,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:30:39,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:30:39,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:30:39,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:30:39,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:30:39,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:30:39,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:30:39,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:30:39,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:30:39,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:30:39,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:30:39,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:30:39,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:30:39,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:30:39,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:30:39,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:30:39,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:30:39,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:30:39,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:30:39,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:30:39,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:30:39,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:30:39,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:30:39,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:30:39,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:30:39,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:30:39,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:30:39,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:30:39,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:30:39,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:30:39,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:30:39,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:30:39,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:30:39,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:30:39,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:30:39,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:30:39,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:30:39,428 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 [2019-11-07 04:30:39,449 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:30:39,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:30:39,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:30:39,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:30:39,451 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:30:39,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:30:39,452 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:30:39,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:30:39,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:30:39,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:30:39,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:30:39,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:30:39,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:30:39,454 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:30:39,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:30:39,455 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:30:39,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:30:39,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:30:39,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:30:39,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:30:39,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:30:39,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:30:39,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:30:39,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:30:39,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:30:39,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:30:39,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:30:39,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:30:39,457 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 [2019-11-07 04:30:39,762 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:30:39,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:30:39,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:30:39,779 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:30:39,780 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:30:39,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2019-11-07 04:30:39,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5858b987d/1bc7ad3bf78640afa39506ce092499fb/FLAGb3df075c9 [2019-11-07 04:30:40,334 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:30:40,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2019-11-07 04:30:40,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5858b987d/1bc7ad3bf78640afa39506ce092499fb/FLAGb3df075c9 [2019-11-07 04:30:40,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5858b987d/1bc7ad3bf78640afa39506ce092499fb [2019-11-07 04:30:40,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:30:40,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:30:40,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:30:40,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:30:40,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:30:40,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:30:40" (1/1) ... [2019-11-07 04:30:40,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237c4ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:40, skipping insertion in model container [2019-11-07 04:30:40,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:30:40" (1/1) ... [2019-11-07 04:30:40,757 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:30:40,814 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:30:41,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:30:41,416 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:30:41,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:30:41,554 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:30:41,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41 WrapperNode [2019-11-07 04:30:41,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:30:41,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:30:41,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:30:41,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:30:41,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (1/1) ... [2019-11-07 04:30:41,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (1/1) ... [2019-11-07 04:30:41,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (1/1) ... [2019-11-07 04:30:41,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (1/1) ... [2019-11-07 04:30:41,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (1/1) ... [2019-11-07 04:30:41,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (1/1) ... [2019-11-07 04:30:41,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (1/1) ... [2019-11-07 04:30:41,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:30:41,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:30:41,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:30:41,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:30:41,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:30:41,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:30:41,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:30:41,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:30:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:30:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:30:41,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:30:41,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:30:41,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:30:41,710 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:30:41,710 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:30:41,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:30:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:30:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:30:41,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:30:41,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:30:41,712 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 04:30:41,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:30:41,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:30:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:30:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:30:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:30:41,715 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:30:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:30:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:30:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:30:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:30:41,716 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:30:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:30:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:30:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:30:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:30:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:30:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:30:41,717 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:30:41,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:30:41,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:30:41,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:30:41,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:30:41,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:30:41,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:30:41,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:30:41,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:30:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:30:41,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:30:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:30:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:30:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:30:41,720 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 04:30:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:30:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:30:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:30:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:30:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:30:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:30:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:30:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:30:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:30:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:30:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:30:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:30:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:30:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:30:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:30:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:30:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:30:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:30:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:30:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:30:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:30:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:30:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:30:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:30:41,725 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:30:41,726 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:30:41,726 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:30:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:30:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:30:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:30:41,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:30:41,728 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:30:41,728 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:30:41,729 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:30:41,729 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:30:41,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:30:41,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:30:41,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:30:41,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:30:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:30:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:30:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:30:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:30:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:30:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:30:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:30:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:30:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:30:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:30:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:30:43,302 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:30:43,302 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:30:43,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:30:43 BoogieIcfgContainer [2019-11-07 04:30:43,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:30:43,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:30:43,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:30:43,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:30:43,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:30:40" (1/3) ... [2019-11-07 04:30:43,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7187e289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:30:43, skipping insertion in model container [2019-11-07 04:30:43,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:41" (2/3) ... [2019-11-07 04:30:43,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7187e289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:30:43, skipping insertion in model container [2019-11-07 04:30:43,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:30:43" (3/3) ... [2019-11-07 04:30:43,312 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2019-11-07 04:30:43,322 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:30:43,331 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:30:43,342 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:30:43,371 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:30:43,371 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:30:43,371 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:30:43,371 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:30:43,372 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:30:43,372 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:30:43,372 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:30:43,372 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:30:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2019-11-07 04:30:43,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-07 04:30:43,409 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:43,410 INFO L410 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] [2019-11-07 04:30:43,412 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:43,419 INFO L82 PathProgramCache]: Analyzing trace with hash -540376013, now seen corresponding path program 1 times [2019-11-07 04:30:43,431 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:43,431 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228112277] [2019-11-07 04:30:43,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:43,802 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228112277] [2019-11-07 04:30:43,802 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:43,803 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:30:43,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957173332] [2019-11-07 04:30:43,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:30:43,808 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:43,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:30:43,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:30:43,825 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 2 states. [2019-11-07 04:30:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:43,861 INFO L93 Difference]: Finished difference Result 230 states and 281 transitions. [2019-11-07 04:30:43,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:30:43,862 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-11-07 04:30:43,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:43,874 INFO L225 Difference]: With dead ends: 230 [2019-11-07 04:30:43,875 INFO L226 Difference]: Without dead ends: 117 [2019-11-07 04:30:43,879 INFO L630 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 [2019-11-07 04:30:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-11-07 04:30:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2019-11-07 04:30:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-11-07 04:30:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2019-11-07 04:30:43,929 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 46 [2019-11-07 04:30:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:43,929 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2019-11-07 04:30:43,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:30:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2019-11-07 04:30:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 04:30:43,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:43,934 INFO L410 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] [2019-11-07 04:30:43,934 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:43,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:43,935 INFO L82 PathProgramCache]: Analyzing trace with hash 857327170, now seen corresponding path program 1 times [2019-11-07 04:30:43,935 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:43,935 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669554953] [2019-11-07 04:30:43,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:44,046 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669554953] [2019-11-07 04:30:44,046 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:44,047 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:30:44,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139963677] [2019-11-07 04:30:44,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:30:44,050 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:44,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:30:44,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:30:44,051 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand 3 states. [2019-11-07 04:30:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:44,095 INFO L93 Difference]: Finished difference Result 181 states and 209 transitions. [2019-11-07 04:30:44,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:30:44,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-11-07 04:30:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:44,098 INFO L225 Difference]: With dead ends: 181 [2019-11-07 04:30:44,099 INFO L226 Difference]: Without dead ends: 109 [2019-11-07 04:30:44,100 INFO L630 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 [2019-11-07 04:30:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-07 04:30:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-11-07 04:30:44,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-07 04:30:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2019-11-07 04:30:44,121 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2019-11-07 04:30:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:44,122 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2019-11-07 04:30:44,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:30:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2019-11-07 04:30:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-07 04:30:44,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:44,126 INFO L410 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] [2019-11-07 04:30:44,129 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1729354015, now seen corresponding path program 1 times [2019-11-07 04:30:44,130 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:44,130 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608249870] [2019-11-07 04:30:44,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:44,378 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608249870] [2019-11-07 04:30:44,379 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:44,379 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:30:44,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083148651] [2019-11-07 04:30:44,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:30:44,383 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:44,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:30:44,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:30:44,384 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 7 states. [2019-11-07 04:30:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:44,942 INFO L93 Difference]: Finished difference Result 322 states and 384 transitions. [2019-11-07 04:30:44,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:30:44,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2019-11-07 04:30:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:44,950 INFO L225 Difference]: With dead ends: 322 [2019-11-07 04:30:44,951 INFO L226 Difference]: Without dead ends: 238 [2019-11-07 04:30:44,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:30:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2019-11-07 04:30:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 230. [2019-11-07 04:30:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2019-11-07 04:30:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 274 transitions. [2019-11-07 04:30:45,027 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 274 transitions. Word has length 50 [2019-11-07 04:30:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:45,028 INFO L462 AbstractCegarLoop]: Abstraction has 230 states and 274 transitions. [2019-11-07 04:30:45,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:30:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 274 transitions. [2019-11-07 04:30:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-07 04:30:45,036 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:45,036 INFO L410 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] [2019-11-07 04:30:45,037 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:45,040 INFO L82 PathProgramCache]: Analyzing trace with hash 381344418, now seen corresponding path program 1 times [2019-11-07 04:30:45,040 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:45,040 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072536737] [2019-11-07 04:30:45,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:45,233 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072536737] [2019-11-07 04:30:45,233 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:45,233 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:30:45,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559739063] [2019-11-07 04:30:45,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:30:45,234 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:30:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:30:45,235 INFO L87 Difference]: Start difference. First operand 230 states and 274 transitions. Second operand 6 states. [2019-11-07 04:30:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:45,488 INFO L93 Difference]: Finished difference Result 622 states and 759 transitions. [2019-11-07 04:30:45,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:30:45,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-11-07 04:30:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:45,495 INFO L225 Difference]: With dead ends: 622 [2019-11-07 04:30:45,495 INFO L226 Difference]: Without dead ends: 417 [2019-11-07 04:30:45,498 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:30:45,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2019-11-07 04:30:45,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 405. [2019-11-07 04:30:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2019-11-07 04:30:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 485 transitions. [2019-11-07 04:30:45,541 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 485 transitions. Word has length 55 [2019-11-07 04:30:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:45,542 INFO L462 AbstractCegarLoop]: Abstraction has 405 states and 485 transitions. [2019-11-07 04:30:45,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:30:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 485 transitions. [2019-11-07 04:30:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 04:30:45,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:45,546 INFO L410 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] [2019-11-07 04:30:45,546 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash -267876420, now seen corresponding path program 1 times [2019-11-07 04:30:45,547 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:45,547 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643039112] [2019-11-07 04:30:45,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:45,732 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643039112] [2019-11-07 04:30:45,732 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:45,732 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:30:45,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709336482] [2019-11-07 04:30:45,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:30:45,733 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:45,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:30:45,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:30:45,734 INFO L87 Difference]: Start difference. First operand 405 states and 485 transitions. Second operand 7 states. [2019-11-07 04:30:46,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:46,375 INFO L93 Difference]: Finished difference Result 1071 states and 1404 transitions. [2019-11-07 04:30:46,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:30:46,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-11-07 04:30:46,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:46,385 INFO L225 Difference]: With dead ends: 1071 [2019-11-07 04:30:46,385 INFO L226 Difference]: Without dead ends: 691 [2019-11-07 04:30:46,389 INFO L630 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 [2019-11-07 04:30:46,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-11-07 04:30:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 604. [2019-11-07 04:30:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-11-07 04:30:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 724 transitions. [2019-11-07 04:30:46,470 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 724 transitions. Word has length 58 [2019-11-07 04:30:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:46,471 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 724 transitions. [2019-11-07 04:30:46,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:30:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 724 transitions. [2019-11-07 04:30:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-07 04:30:46,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:46,476 INFO L410 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] [2019-11-07 04:30:46,476 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:46,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:46,477 INFO L82 PathProgramCache]: Analyzing trace with hash 601811161, now seen corresponding path program 1 times [2019-11-07 04:30:46,477 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:46,477 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127293704] [2019-11-07 04:30:46,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:46,585 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127293704] [2019-11-07 04:30:46,586 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:46,587 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:30:46,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171738825] [2019-11-07 04:30:46,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:30:46,588 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:46,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:30:46,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:30:46,588 INFO L87 Difference]: Start difference. First operand 604 states and 724 transitions. Second operand 3 states. [2019-11-07 04:30:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:46,676 INFO L93 Difference]: Finished difference Result 852 states and 1047 transitions. [2019-11-07 04:30:46,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:30:46,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-11-07 04:30:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:46,682 INFO L225 Difference]: With dead ends: 852 [2019-11-07 04:30:46,682 INFO L226 Difference]: Without dead ends: 849 [2019-11-07 04:30:46,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:30:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2019-11-07 04:30:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 809. [2019-11-07 04:30:46,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2019-11-07 04:30:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 994 transitions. [2019-11-07 04:30:46,734 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 994 transitions. Word has length 75 [2019-11-07 04:30:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:46,734 INFO L462 AbstractCegarLoop]: Abstraction has 809 states and 994 transitions. [2019-11-07 04:30:46,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:30:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 994 transitions. [2019-11-07 04:30:46,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-07 04:30:46,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:46,740 INFO L410 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, 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] [2019-11-07 04:30:46,741 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:46,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1154318642, now seen corresponding path program 1 times [2019-11-07 04:30:46,741 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:46,742 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738994148] [2019-11-07 04:30:46,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:30:46,844 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738994148] [2019-11-07 04:30:46,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759319419] [2019-11-07 04:30:46,845 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 [2019-11-07 04:30:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:47,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 04:30:47,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:30:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:47,148 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:30:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:30:47,422 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:30:47,422 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-11-07 04:30:47,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864403686] [2019-11-07 04:30:47,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:30:47,423 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:47,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:30:47,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:30:47,424 INFO L87 Difference]: Start difference. First operand 809 states and 994 transitions. Second operand 3 states. [2019-11-07 04:30:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:47,531 INFO L93 Difference]: Finished difference Result 1561 states and 1930 transitions. [2019-11-07 04:30:47,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:30:47,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2019-11-07 04:30:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:47,538 INFO L225 Difference]: With dead ends: 1561 [2019-11-07 04:30:47,538 INFO L226 Difference]: Without dead ends: 777 [2019-11-07 04:30:47,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 248 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:30:47,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2019-11-07 04:30:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2019-11-07 04:30:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2019-11-07 04:30:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 891 transitions. [2019-11-07 04:30:47,589 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 891 transitions. Word has length 124 [2019-11-07 04:30:47,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:47,590 INFO L462 AbstractCegarLoop]: Abstraction has 777 states and 891 transitions. [2019-11-07 04:30:47,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:30:47,590 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 891 transitions. [2019-11-07 04:30:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 04:30:47,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:47,594 INFO L410 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, 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] [2019-11-07 04:30:47,801 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:30:47,801 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:47,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1422070824, now seen corresponding path program 1 times [2019-11-07 04:30:47,802 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:47,803 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684951229] [2019-11-07 04:30:47,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:30:48,063 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684951229] [2019-11-07 04:30:48,064 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420711861] [2019-11-07 04:30:48,064 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 [2019-11-07 04:30:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:48,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-07 04:30:48,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:30:48,495 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:48,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:48,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:48,652 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:30:49,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:49,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:50,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:30:50,285 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:30:50,285 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-11-07 04:30:50,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981724062] [2019-11-07 04:30:50,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:30:50,286 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:50,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:30:50,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 04:30:50,288 INFO L87 Difference]: Start difference. First operand 777 states and 891 transitions. Second operand 14 states. [2019-11-07 04:30:52,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:52,785 INFO L93 Difference]: Finished difference Result 2133 states and 2564 transitions. [2019-11-07 04:30:52,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:30:52,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2019-11-07 04:30:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:52,797 INFO L225 Difference]: With dead ends: 2133 [2019-11-07 04:30:52,797 INFO L226 Difference]: Without dead ends: 1381 [2019-11-07 04:30:52,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 231 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=388, Invalid=2474, Unknown=0, NotChecked=0, Total=2862 [2019-11-07 04:30:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2019-11-07 04:30:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1262. [2019-11-07 04:30:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1262 states. [2019-11-07 04:30:52,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1464 transitions. [2019-11-07 04:30:52,895 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1464 transitions. Word has length 127 [2019-11-07 04:30:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:52,895 INFO L462 AbstractCegarLoop]: Abstraction has 1262 states and 1464 transitions. [2019-11-07 04:30:52,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:30:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1464 transitions. [2019-11-07 04:30:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 04:30:52,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:52,900 INFO L410 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] [2019-11-07 04:30:53,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:30:53,107 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:53,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:53,107 INFO L82 PathProgramCache]: Analyzing trace with hash -628382026, now seen corresponding path program 1 times [2019-11-07 04:30:53,107 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:53,108 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984208143] [2019-11-07 04:30:53,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:30:53,522 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984208143] [2019-11-07 04:30:53,523 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122446219] [2019-11-07 04:30:53,523 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 [2019-11-07 04:30:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:53,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 56 conjunts are in the unsatisfiable core [2019-11-07 04:30:53,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:30:53,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:53,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:54,052 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:30:54,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:54,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:30:55,021 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1684998398] [2019-11-07 04:30:55,051 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2019-11-07 04:30:55,051 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:30:55,058 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:30:55,066 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:30:55,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:31:06,015 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-07 04:31:07,711 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:31:07,848 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:08,025 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:08,148 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:08,380 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:31:08,509 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:08,632 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:08,845 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:31:08,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-11-07 04:31:08,871 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-11-07 04:31:09,070 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:09,215 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:09,415 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:09,542 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:09,696 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:09,828 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:09,956 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:10,078 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:10,204 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:10,320 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:10,596 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:10,777 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:10,887 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:11,036 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:11,144 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:11,308 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:11,447 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:11,571 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:11,679 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:11,883 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:12,166 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:12,370 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:12,595 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:12,817 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:12,927 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:13,053 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:13,183 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:13,300 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:13,421 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:13,585 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:13,698 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:13,863 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:14,013 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:14,131 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:14,254 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:14,272 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 552 for LOIs [2019-11-07 04:31:14,423 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:31:14,673 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:14,891 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:31:15,008 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:15,016 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 550 for LOIs [2019-11-07 04:31:15,474 WARN L191 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:15,682 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 598 [2019-11-07 04:31:16,021 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 177 [2019-11-07 04:31:16,772 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 614 [2019-11-07 04:31:16,965 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 614 [2019-11-07 04:31:17,238 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 616 DAG size of output: 616 [2019-11-07 04:31:17,798 WARN L191 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 626 [2019-11-07 04:31:18,176 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 623 DAG size of output: 600