/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_spec1_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:29:13,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:29:13,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:29:13,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:29:13,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:29:13,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:29:13,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:29:13,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:29:13,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:29:13,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:29:13,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:29:13,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:29:13,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:29:13,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:29:13,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:29:13,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:29:13,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:29:13,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:29:13,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:29:13,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:29:13,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:29:13,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:29:13,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:29:13,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:29:13,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:29:13,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:29:13,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:29:13,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:29:13,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:29:13,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:29:13,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:29:13,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:29:13,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:29:13,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:29:13,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:29:13,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:29:13,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:29:13,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:29:13,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:29:13,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:29:13,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:29:13,081 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 04:29:13,097 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:29:13,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:29:13,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:29:13,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:29:13,099 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:29:13,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:29:13,099 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:29:13,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:29:13,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:29:13,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:29:13,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:29:13,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:29:13,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:29:13,100 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:29:13,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:29:13,101 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:29:13,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:29:13,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:29:13,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:29:13,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:29:13,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:29:13,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:29:13,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:29:13,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:29:13,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:29:13,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:29:13,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:29:13,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:29:13,104 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 04:29:13,467 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:29:13,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:29:13,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:29:13,486 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:29:13,487 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:29:13,487 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-11-07 04:29:13,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3297bf542/780097680f4240ae87d820156c314076/FLAG094c8d391 [2019-11-07 04:29:14,045 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:29:14,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-11-07 04:29:14,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3297bf542/780097680f4240ae87d820156c314076/FLAG094c8d391 [2019-11-07 04:29:14,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3297bf542/780097680f4240ae87d820156c314076 [2019-11-07 04:29:14,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:29:14,420 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:29:14,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:29:14,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:29:14,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:29:14,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:29:14" (1/1) ... [2019-11-07 04:29:14,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb53db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:14, skipping insertion in model container [2019-11-07 04:29:14,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:29:14" (1/1) ... [2019-11-07 04:29:14,465 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:29:14,595 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:29:15,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:29:15,357 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:29:15,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:29:15,526 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:29:15,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15 WrapperNode [2019-11-07 04:29:15,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:29:15,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:29:15,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:29:15,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:29:15,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (1/1) ... [2019-11-07 04:29:15,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (1/1) ... [2019-11-07 04:29:15,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (1/1) ... [2019-11-07 04:29:15,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (1/1) ... [2019-11-07 04:29:15,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (1/1) ... [2019-11-07 04:29:15,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (1/1) ... [2019-11-07 04:29:15,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (1/1) ... [2019-11-07 04:29:15,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:29:15,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:29:15,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:29:15,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:29:15,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (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 04:29:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:29:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:29:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:29:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:29:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:29:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:29:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:29:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:29:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:29:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:29:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:29:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:29:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:29:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:29:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:29:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:29:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:29:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:29:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:29:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:29:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:29:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:29:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:29:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:29:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:29:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:29:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:29:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:29:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:29:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:29:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:29:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:29:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:29:15,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:29:15,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:29:15,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:29:15,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:29:15,707 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 04:29:15,708 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:29:15,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:29:15,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:29:15,708 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:29:15,708 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:29:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:29:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:29:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:29:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:29:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:29:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:29:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:29:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:29:15,709 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:29:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:29:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:29:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:29:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:29:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:29:15,710 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:29:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:29:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:29:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:29:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:29:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:29:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:29:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:29:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:29:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:29:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:29:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:29:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:29:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:29:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:29:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:29:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:29:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:29:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:29:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:29:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:29:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:29:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:29:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:29:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:29:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:29:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:29:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:29:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:29:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 04:29:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:29:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:29:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:29:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:29:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:29:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:29:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:29:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:29:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:29:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:29:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:29:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:29:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:29:17,299 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:29:17,299 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:29:17,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:29:17 BoogieIcfgContainer [2019-11-07 04:29:17,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:29:17,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:29:17,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:29:17,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:29:17,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:29:14" (1/3) ... [2019-11-07 04:29:17,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cdfe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:29:17, skipping insertion in model container [2019-11-07 04:29:17,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:29:15" (2/3) ... [2019-11-07 04:29:17,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cdfe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:29:17, skipping insertion in model container [2019-11-07 04:29:17,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:29:17" (3/3) ... [2019-11-07 04:29:17,313 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product60.cil.c [2019-11-07 04:29:17,324 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:29:17,334 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:29:17,348 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:29:17,383 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:29:17,383 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:29:17,384 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:29:17,384 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:29:17,384 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:29:17,385 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:29:17,385 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:29:17,385 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:29:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2019-11-07 04:29:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 04:29:17,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:29:17,439 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] [2019-11-07 04:29:17,442 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:29:17,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:29:17,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1995718927, now seen corresponding path program 1 times [2019-11-07 04:29:17,456 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:29:17,456 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86169963] [2019-11-07 04:29:17,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:29:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:17,804 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 04:29:17,804 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86169963] [2019-11-07 04:29:17,806 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:29:17,806 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:29:17,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107387823] [2019-11-07 04:29:17,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:29:17,814 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:29:17,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:29:17,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:29:17,840 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 2 states. [2019-11-07 04:29:17,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:29:17,886 INFO L93 Difference]: Finished difference Result 253 states and 306 transitions. [2019-11-07 04:29:17,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:29:17,888 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-11-07 04:29:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:29:17,901 INFO L225 Difference]: With dead ends: 253 [2019-11-07 04:29:17,901 INFO L226 Difference]: Without dead ends: 127 [2019-11-07 04:29:17,906 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 04:29:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-07 04:29:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-11-07 04:29:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-07 04:29:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2019-11-07 04:29:17,964 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 42 [2019-11-07 04:29:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:29:17,965 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2019-11-07 04:29:17,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:29:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2019-11-07 04:29:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:29:17,969 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:29:17,969 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] [2019-11-07 04:29:17,970 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:29:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:29:17,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1543283696, now seen corresponding path program 1 times [2019-11-07 04:29:17,971 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:29:17,971 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772568564] [2019-11-07 04:29:17,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:29:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:18,102 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 04:29:18,103 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772568564] [2019-11-07 04:29:18,103 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:29:18,104 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:29:18,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489379596] [2019-11-07 04:29:18,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:29:18,108 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:29:18,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:29:18,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:29:18,109 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 3 states. [2019-11-07 04:29:18,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:29:18,146 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2019-11-07 04:29:18,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:29:18,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-07 04:29:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:29:18,150 INFO L225 Difference]: With dead ends: 201 [2019-11-07 04:29:18,150 INFO L226 Difference]: Without dead ends: 119 [2019-11-07 04:29:18,152 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 04:29:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-07 04:29:18,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-11-07 04:29:18,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-07 04:29:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2019-11-07 04:29:18,169 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 43 [2019-11-07 04:29:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:29:18,170 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2019-11-07 04:29:18,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:29:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2019-11-07 04:29:18,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 04:29:18,172 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:29:18,173 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 04:29:18,173 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:29:18,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:29:18,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1849024731, now seen corresponding path program 1 times [2019-11-07 04:29:18,174 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:29:18,174 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185353117] [2019-11-07 04:29:18,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:29:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:18,378 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 04:29:18,379 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185353117] [2019-11-07 04:29:18,380 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:29:18,380 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:29:18,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610849750] [2019-11-07 04:29:18,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:29:18,382 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:29:18,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:29:18,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:29:18,383 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand 7 states. [2019-11-07 04:29:18,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:29:18,952 INFO L93 Difference]: Finished difference Result 358 states and 424 transitions. [2019-11-07 04:29:18,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:29:18,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-11-07 04:29:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:29:18,956 INFO L225 Difference]: With dead ends: 358 [2019-11-07 04:29:18,957 INFO L226 Difference]: Without dead ends: 261 [2019-11-07 04:29:18,958 INFO L630 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 [2019-11-07 04:29:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-11-07 04:29:18,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2019-11-07 04:29:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-11-07 04:29:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 294 transitions. [2019-11-07 04:29:18,996 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 294 transitions. Word has length 47 [2019-11-07 04:29:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:29:18,997 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 294 transitions. [2019-11-07 04:29:18,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:29:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 294 transitions. [2019-11-07 04:29:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-07 04:29:19,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:29:19,006 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] [2019-11-07 04:29:19,006 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:29:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:29:19,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1498427456, now seen corresponding path program 1 times [2019-11-07 04:29:19,007 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:29:19,007 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400291357] [2019-11-07 04:29:19,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:29:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:19,154 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 04:29:19,157 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400291357] [2019-11-07 04:29:19,157 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:29:19,158 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:29:19,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645619061] [2019-11-07 04:29:19,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:29:19,159 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:29:19,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:29:19,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:29:19,159 INFO L87 Difference]: Start difference. First operand 249 states and 294 transitions. Second operand 6 states. [2019-11-07 04:29:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:29:19,413 INFO L93 Difference]: Finished difference Result 688 states and 831 transitions. [2019-11-07 04:29:19,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:29:19,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2019-11-07 04:29:19,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:29:19,418 INFO L225 Difference]: With dead ends: 688 [2019-11-07 04:29:19,419 INFO L226 Difference]: Without dead ends: 461 [2019-11-07 04:29:19,421 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 04:29:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-11-07 04:29:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 449. [2019-11-07 04:29:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-11-07 04:29:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 534 transitions. [2019-11-07 04:29:19,494 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 534 transitions. Word has length 51 [2019-11-07 04:29:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:29:19,494 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 534 transitions. [2019-11-07 04:29:19,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:29:19,495 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 534 transitions. [2019-11-07 04:29:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-07 04:29:19,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:29:19,498 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] [2019-11-07 04:29:19,498 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:29:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:29:19,499 INFO L82 PathProgramCache]: Analyzing trace with hash -854929592, now seen corresponding path program 1 times [2019-11-07 04:29:19,499 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:29:19,499 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681904893] [2019-11-07 04:29:19,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:29:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:19,624 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 04:29:19,624 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681904893] [2019-11-07 04:29:19,625 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:29:19,625 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:29:19,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285682884] [2019-11-07 04:29:19,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:29:19,626 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:29:19,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:29:19,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:29:19,627 INFO L87 Difference]: Start difference. First operand 449 states and 534 transitions. Second operand 7 states. [2019-11-07 04:29:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:29:20,288 INFO L93 Difference]: Finished difference Result 1179 states and 1520 transitions. [2019-11-07 04:29:20,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:29:20,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2019-11-07 04:29:20,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:29:20,294 INFO L225 Difference]: With dead ends: 1179 [2019-11-07 04:29:20,295 INFO L226 Difference]: Without dead ends: 752 [2019-11-07 04:29:20,297 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 04:29:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-11-07 04:29:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 663. [2019-11-07 04:29:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2019-11-07 04:29:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 789 transitions. [2019-11-07 04:29:20,353 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 789 transitions. Word has length 54 [2019-11-07 04:29:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:29:20,354 INFO L462 AbstractCegarLoop]: Abstraction has 663 states and 789 transitions. [2019-11-07 04:29:20,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:29:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 789 transitions. [2019-11-07 04:29:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-07 04:29:20,360 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:29:20,360 INFO L410 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] [2019-11-07 04:29:20,361 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:29:20,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:29:20,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1591472147, now seen corresponding path program 1 times [2019-11-07 04:29:20,361 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:29:20,361 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546957129] [2019-11-07 04:29:20,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:29:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:29:20,594 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546957129] [2019-11-07 04:29:20,594 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88638467] [2019-11-07 04:29:20,594 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 04:29:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:20,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-07 04:29:20,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:29:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:29:20,883 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:29:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:29:21,437 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:29:21,437 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 11] total 23 [2019-11-07 04:29:21,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372806463] [2019-11-07 04:29:21,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 04:29:21,442 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:29:21,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 04:29:21,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2019-11-07 04:29:21,444 INFO L87 Difference]: Start difference. First operand 663 states and 789 transitions. Second operand 11 states. [2019-11-07 04:29:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:29:22,140 INFO L93 Difference]: Finished difference Result 1591 states and 1975 transitions. [2019-11-07 04:29:22,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:29:22,141 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2019-11-07 04:29:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:29:22,147 INFO L225 Difference]: With dead ends: 1591 [2019-11-07 04:29:22,147 INFO L226 Difference]: Without dead ends: 950 [2019-11-07 04:29:22,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2019-11-07 04:29:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2019-11-07 04:29:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 930. [2019-11-07 04:29:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2019-11-07 04:29:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1118 transitions. [2019-11-07 04:29:22,213 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1118 transitions. Word has length 85 [2019-11-07 04:29:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:29:22,214 INFO L462 AbstractCegarLoop]: Abstraction has 930 states and 1118 transitions. [2019-11-07 04:29:22,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 04:29:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1118 transitions. [2019-11-07 04:29:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 04:29:22,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:29:22,219 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:29:22,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:29:22,425 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:29:22,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:29:22,426 INFO L82 PathProgramCache]: Analyzing trace with hash -857534902, now seen corresponding path program 1 times [2019-11-07 04:29:22,426 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:29:22,426 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242695132] [2019-11-07 04:29:22,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:29:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 04:29:22,696 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242695132] [2019-11-07 04:29:22,696 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006815780] [2019-11-07 04:29:22,696 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 04:29:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:22,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-07 04:29:22,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:29:23,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:23,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:23,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:29:23,225 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:29:23,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:24,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:24,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:24,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 04:29:24,853 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:29:24,853 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-11-07 04:29:24,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737506776] [2019-11-07 04:29:24,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:29:24,854 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:29:24,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:29:24,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 04:29:24,855 INFO L87 Difference]: Start difference. First operand 930 states and 1118 transitions. Second operand 14 states. [2019-11-07 04:29:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:29:27,185 INFO L93 Difference]: Finished difference Result 2679 states and 3364 transitions. [2019-11-07 04:29:27,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:29:27,186 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2019-11-07 04:29:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:29:27,197 INFO L225 Difference]: With dead ends: 2679 [2019-11-07 04:29:27,197 INFO L226 Difference]: Without dead ends: 1771 [2019-11-07 04:29:27,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 241 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-11-07 04:29:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2019-11-07 04:29:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1659. [2019-11-07 04:29:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2019-11-07 04:29:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2013 transitions. [2019-11-07 04:29:27,294 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2013 transitions. Word has length 132 [2019-11-07 04:29:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:29:27,295 INFO L462 AbstractCegarLoop]: Abstraction has 1659 states and 2013 transitions. [2019-11-07 04:29:27,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:29:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2013 transitions. [2019-11-07 04:29:27,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 04:29:27,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:29:27,301 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:29:27,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:29:27,508 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:29:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:29:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash -155037944, now seen corresponding path program 1 times [2019-11-07 04:29:27,509 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:29:27,511 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511242187] [2019-11-07 04:29:27,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:29:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:29:28,094 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511242187] [2019-11-07 04:29:28,094 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847323395] [2019-11-07 04:29:28,095 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 04:29:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:29:28,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 56 conjunts are in the unsatisfiable core [2019-11-07 04:29:28,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:29:28,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:28,477 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:29:28,735 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:29:29,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,601 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,601 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:29:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:29:29,823 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803946939] [2019-11-07 04:29:29,851 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2019-11-07 04:29:29,852 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:29:29,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:29:29,865 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:29:29,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:29:41,212 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-11-07 04:29:42,836 WARN L191 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:29:43,014 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:29:43,178 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:29:43,295 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:29:43,521 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:29:43,748 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:29:44,007 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:29:44,015 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-11-07 04:29:44,025 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-11-07 04:29:44,276 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:29:44,426 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:29:44,603 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:44,837 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:29:45,000 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:29:45,153 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:45,277 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:29:45,424 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:29:45,719 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:45,979 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:29:46,091 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:29:46,219 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:46,422 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:46,561 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:46,685 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:46,794 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:46,927 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:47,078 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:47,236 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:47,366 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:47,485 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:47,593 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:47,724 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:47,841 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:29:48,072 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:29:48,249 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:29:48,468 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:29:48,674 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:29:48,937 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:29:49,163 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:29:49,396 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:29:49,526 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:29:49,653 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:29:49,766 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:29:49,900 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:29:50,022 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:29:50,042 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 546 for LOIs [2019-11-07 04:29:50,056 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 544 for LOIs [2019-11-07 04:29:50,367 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-11-07 04:29:50,952 WARN L191 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:29:51,436 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 571 [2019-11-07 04:29:51,554 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-11-07 04:29:52,027 WARN L191 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:29:52,369 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 571 [2019-11-07 04:29:52,472 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-11-07 04:29:52,754 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:29:53,072 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 571 [2019-11-07 04:29:53,506 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 574