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_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:15:22,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:15:22,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:15:22,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:15:22,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:15:22,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:15:22,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:15:22,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:15:22,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:15:22,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:15:22,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:15:22,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:15:22,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:15:22,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:15:22,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:15:22,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:15:22,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:15:22,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:15:22,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:15:22,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:15:22,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:15:22,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:15:22,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:15:22,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:15:22,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:15:22,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:15:22,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:15:22,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:15:22,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:15:22,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:15:22,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:15:22,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:15:22,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:15:22,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:15:22,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:15:22,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:15:22,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:15:22,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:15:22,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:15:22,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:15:22,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:15:22,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:15:22,137 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:15:22,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:15:22,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:15:22,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:15:22,139 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:15:22,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:15:22,140 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:15:22,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:15:22,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:15:22,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:15:22,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:15:22,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:15:22,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:15:22,141 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:15:22,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:15:22,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:15:22,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:15:22,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:15:22,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:15:22,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:15:22,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:15:22,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:15:22,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:15:22,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:15:22,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:15:22,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:15:22,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:15:22,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:15:22,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:15:22,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:15:22,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:15:22,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:15:22,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:15:22,454 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:15:22,455 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-10-13 23:15:22,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f43c0561/1e3738797bc64c6da113f99e8c84c24e/FLAG4ae2ac765 [2019-10-13 23:15:23,054 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:15:23,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-10-13 23:15:23,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f43c0561/1e3738797bc64c6da113f99e8c84c24e/FLAG4ae2ac765 [2019-10-13 23:15:23,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f43c0561/1e3738797bc64c6da113f99e8c84c24e [2019-10-13 23:15:23,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:15:23,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:15:23,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:15:23,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:15:23,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:15:23,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:15:23" (1/1) ... [2019-10-13 23:15:23,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265812f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:23, skipping insertion in model container [2019-10-13 23:15:23,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:15:23" (1/1) ... [2019-10-13 23:15:23,370 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:15:23,444 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:15:23,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:15:23,956 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:15:24,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:15:24,101 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:15:24,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24 WrapperNode [2019-10-13 23:15:24,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:15:24,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:15:24,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:15:24,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:15:24,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (1/1) ... [2019-10-13 23:15:24,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (1/1) ... [2019-10-13 23:15:24,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (1/1) ... [2019-10-13 23:15:24,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (1/1) ... [2019-10-13 23:15:24,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (1/1) ... [2019-10-13 23:15:24,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (1/1) ... [2019-10-13 23:15:24,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (1/1) ... [2019-10-13 23:15:24,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:15:24,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:15:24,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:15:24,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:15:24,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:15:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:15:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:15:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:15:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:15:24,253 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:15:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:15:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:15:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:15:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:15:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:15:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:15:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:15:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:15:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:15:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:15:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:15:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:15:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:15:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:15:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:15:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:15:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:15:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:15:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:15:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:15:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:15:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:15:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:15:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:15:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:15:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:15:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:15:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:15:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:15:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:15:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:15:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:15:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:15:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:15:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:15:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:15:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:15:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:15:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:15:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:15:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:15:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:15:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:15:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:15:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:15:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:15:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:15:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:15:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:15:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:15:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:15:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:15:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:15:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:15:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:15:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:15:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:15:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:15:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:15:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:15:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:15:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:15:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:15:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:15:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:15:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:15:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:15:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:15:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:15:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:15:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:15:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:15:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:15:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:15:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:15:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:15:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:15:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:15:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:15:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:15:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:15:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:15:24,267 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:15:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:15:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:15:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:15:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:15:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:15:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:15:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:15:24,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:15:25,909 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:15:25,910 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:15:25,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:25 BoogieIcfgContainer [2019-10-13 23:15:25,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:15:25,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:15:25,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:15:25,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:15:25,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:15:23" (1/3) ... [2019-10-13 23:15:25,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aea95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:25, skipping insertion in model container [2019-10-13 23:15:25,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:24" (2/3) ... [2019-10-13 23:15:25,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aea95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:25, skipping insertion in model container [2019-10-13 23:15:25,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:25" (3/3) ... [2019-10-13 23:15:25,923 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2019-10-13 23:15:25,935 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:15:25,944 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:15:25,957 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:15:25,991 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:15:25,991 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:15:25,991 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:15:25,991 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:15:25,991 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:15:25,992 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:15:25,992 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:15:25,992 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:15:26,019 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2019-10-13 23:15:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 23:15:26,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:26,030 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:26,032 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash 60094482, now seen corresponding path program 1 times [2019-10-13 23:15:26,048 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:26,048 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101816149] [2019-10-13 23:15:26,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:26,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:26,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:26,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101816149] [2019-10-13 23:15:26,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:26,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:15:26,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70208316] [2019-10-13 23:15:26,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:15:26,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:26,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:15:26,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:15:26,481 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 2 states. [2019-10-13 23:15:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:26,529 INFO L93 Difference]: Finished difference Result 216 states and 259 transitions. [2019-10-13 23:15:26,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:15:26,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-13 23:15:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:26,545 INFO L225 Difference]: With dead ends: 216 [2019-10-13 23:15:26,545 INFO L226 Difference]: Without dead ends: 110 [2019-10-13 23:15:26,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:15:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-13 23:15:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-10-13 23:15:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-13 23:15:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2019-10-13 23:15:26,610 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 46 [2019-10-13 23:15:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:26,611 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2019-10-13 23:15:26,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:15:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2019-10-13 23:15:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 23:15:26,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:26,615 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:26,616 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:26,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1957286119, now seen corresponding path program 1 times [2019-10-13 23:15:26,616 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:26,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18840815] [2019-10-13 23:15:26,617 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:26,617 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:26,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:26,785 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18840815] [2019-10-13 23:15:26,785 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:26,786 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:15:26,786 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400158059] [2019-10-13 23:15:26,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:26,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:26,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:26,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:26,790 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 3 states. [2019-10-13 23:15:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:26,818 INFO L93 Difference]: Finished difference Result 174 states and 198 transitions. [2019-10-13 23:15:26,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:26,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-13 23:15:26,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:26,822 INFO L225 Difference]: With dead ends: 174 [2019-10-13 23:15:26,822 INFO L226 Difference]: Without dead ends: 102 [2019-10-13 23:15:26,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-13 23:15:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-13 23:15:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-13 23:15:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2019-10-13 23:15:26,840 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 47 [2019-10-13 23:15:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:26,841 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2019-10-13 23:15:26,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2019-10-13 23:15:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 23:15:26,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:26,844 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:26,844 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:26,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1775341699, now seen corresponding path program 1 times [2019-10-13 23:15:26,845 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:26,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964651995] [2019-10-13 23:15:26,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:26,846 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:26,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:27,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964651995] [2019-10-13 23:15:27,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:27,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:15:27,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983150702] [2019-10-13 23:15:27,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:15:27,021 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:27,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:15:27,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:15:27,021 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2019-10-13 23:15:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:27,391 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2019-10-13 23:15:27,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:15:27,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-10-13 23:15:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:27,396 INFO L225 Difference]: With dead ends: 179 [2019-10-13 23:15:27,396 INFO L226 Difference]: Without dead ends: 102 [2019-10-13 23:15:27,398 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:15:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-13 23:15:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-13 23:15:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-13 23:15:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2019-10-13 23:15:27,425 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 49 [2019-10-13 23:15:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:27,426 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2019-10-13 23:15:27,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:15:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2019-10-13 23:15:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-13 23:15:27,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:27,433 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:27,433 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:27,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:27,438 INFO L82 PathProgramCache]: Analyzing trace with hash 8463179, now seen corresponding path program 1 times [2019-10-13 23:15:27,438 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:27,439 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849428234] [2019-10-13 23:15:27,439 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:27,439 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:27,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:27,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849428234] [2019-10-13 23:15:27,586 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:27,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:15:27,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187657802] [2019-10-13 23:15:27,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:15:27,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:27,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:15:27,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:15:27,588 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 5 states. [2019-10-13 23:15:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:28,109 INFO L93 Difference]: Finished difference Result 263 states and 308 transitions. [2019-10-13 23:15:28,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:15:28,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-13 23:15:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:28,115 INFO L225 Difference]: With dead ends: 263 [2019-10-13 23:15:28,116 INFO L226 Difference]: Without dead ends: 186 [2019-10-13 23:15:28,119 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:15:28,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-10-13 23:15:28,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 171. [2019-10-13 23:15:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2019-10-13 23:15:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 189 transitions. [2019-10-13 23:15:28,164 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 189 transitions. Word has length 62 [2019-10-13 23:15:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:28,165 INFO L462 AbstractCegarLoop]: Abstraction has 171 states and 189 transitions. [2019-10-13 23:15:28,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:15:28,171 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 189 transitions. [2019-10-13 23:15:28,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-13 23:15:28,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:28,173 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:28,173 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:28,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:28,174 INFO L82 PathProgramCache]: Analyzing trace with hash 756721838, now seen corresponding path program 1 times [2019-10-13 23:15:28,174 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:28,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636995100] [2019-10-13 23:15:28,175 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:28,175 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:28,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:28,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636995100] [2019-10-13 23:15:28,357 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:28,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:15:28,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341072452] [2019-10-13 23:15:28,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:15:28,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:28,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:15:28,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:15:28,361 INFO L87 Difference]: Start difference. First operand 171 states and 189 transitions. Second operand 6 states. [2019-10-13 23:15:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:28,581 INFO L93 Difference]: Finished difference Result 446 states and 508 transitions. [2019-10-13 23:15:28,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:15:28,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-13 23:15:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:28,592 INFO L225 Difference]: With dead ends: 446 [2019-10-13 23:15:28,592 INFO L226 Difference]: Without dead ends: 300 [2019-10-13 23:15:28,594 INFO L600 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 [2019-10-13 23:15:28,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-10-13 23:15:28,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 290. [2019-10-13 23:15:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-10-13 23:15:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 318 transitions. [2019-10-13 23:15:28,633 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 318 transitions. Word has length 71 [2019-10-13 23:15:28,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:28,634 INFO L462 AbstractCegarLoop]: Abstraction has 290 states and 318 transitions. [2019-10-13 23:15:28,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:15:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 318 transitions. [2019-10-13 23:15:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:15:28,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:28,636 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:28,636 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:28,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1633920219, now seen corresponding path program 1 times [2019-10-13 23:15:28,637 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:28,637 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855739035] [2019-10-13 23:15:28,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:28,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:28,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:28,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855739035] [2019-10-13 23:15:28,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:28,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:15:28,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854403855] [2019-10-13 23:15:28,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:28,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:28,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:28,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:28,710 INFO L87 Difference]: Start difference. First operand 290 states and 318 transitions. Second operand 3 states. [2019-10-13 23:15:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:28,757 INFO L93 Difference]: Finished difference Result 436 states and 502 transitions. [2019-10-13 23:15:28,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:28,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-10-13 23:15:28,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:28,761 INFO L225 Difference]: With dead ends: 436 [2019-10-13 23:15:28,762 INFO L226 Difference]: Without dead ends: 433 [2019-10-13 23:15:28,762 INFO L600 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 [2019-10-13 23:15:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2019-10-13 23:15:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2019-10-13 23:15:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-10-13 23:15:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 497 transitions. [2019-10-13 23:15:28,798 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 497 transitions. Word has length 74 [2019-10-13 23:15:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:28,799 INFO L462 AbstractCegarLoop]: Abstraction has 433 states and 497 transitions. [2019-10-13 23:15:28,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 497 transitions. [2019-10-13 23:15:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:15:28,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:28,803 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:15:28,803 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:28,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:28,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1973825001, now seen corresponding path program 1 times [2019-10-13 23:15:28,804 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:28,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029057870] [2019-10-13 23:15:28,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:28,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:28,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:15:28,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029057870] [2019-10-13 23:15:28,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093205596] [2019-10-13 23:15:28,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:29,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 23:15:29,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:29,298 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:15:29,511 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:15:29,511 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-10-13 23:15:29,511 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916740929] [2019-10-13 23:15:29,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:29,512 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:29,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:29,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:15:29,513 INFO L87 Difference]: Start difference. First operand 433 states and 497 transitions. Second operand 3 states. [2019-10-13 23:15:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:29,597 INFO L93 Difference]: Finished difference Result 844 states and 971 transitions. [2019-10-13 23:15:29,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:29,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-13 23:15:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:29,602 INFO L225 Difference]: With dead ends: 844 [2019-10-13 23:15:29,602 INFO L226 Difference]: Without dead ends: 436 [2019-10-13 23:15:29,604 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 244 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:15:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-10-13 23:15:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 433. [2019-10-13 23:15:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2019-10-13 23:15:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 484 transitions. [2019-10-13 23:15:29,640 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 484 transitions. Word has length 122 [2019-10-13 23:15:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:29,640 INFO L462 AbstractCegarLoop]: Abstraction has 433 states and 484 transitions. [2019-10-13 23:15:29,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 484 transitions. [2019-10-13 23:15:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:15:29,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:29,644 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:15:29,851 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:29,852 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash 201450369, now seen corresponding path program 1 times [2019-10-13 23:15:29,853 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:29,854 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012713844] [2019-10-13 23:15:29,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:29,855 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:29,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:15:30,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012713844] [2019-10-13 23:15:30,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471837422] [2019-10-13 23:15:30,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:30,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:15:30,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:15:30,350 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:15:30,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:15:30,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 7] total 15 [2019-10-13 23:15:30,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74675313] [2019-10-13 23:15:30,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:15:30,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:30,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:15:30,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:15:30,678 INFO L87 Difference]: Start difference. First operand 433 states and 484 transitions. Second operand 6 states. [2019-10-13 23:15:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:31,016 INFO L93 Difference]: Finished difference Result 658 states and 743 transitions. [2019-10-13 23:15:31,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:15:31,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2019-10-13 23:15:31,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:31,019 INFO L225 Difference]: With dead ends: 658 [2019-10-13 23:15:31,020 INFO L226 Difference]: Without dead ends: 369 [2019-10-13 23:15:31,021 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:15:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2019-10-13 23:15:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 355. [2019-10-13 23:15:31,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2019-10-13 23:15:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 384 transitions. [2019-10-13 23:15:31,041 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 384 transitions. Word has length 122 [2019-10-13 23:15:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:31,042 INFO L462 AbstractCegarLoop]: Abstraction has 355 states and 384 transitions. [2019-10-13 23:15:31,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:15:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 384 transitions. [2019-10-13 23:15:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:15:31,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:31,045 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:31,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:31,249 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:31,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2040046191, now seen corresponding path program 1 times [2019-10-13 23:15:31,250 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:31,251 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992112456] [2019-10-13 23:15:31,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:31,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:31,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:15:31,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992112456] [2019-10-13 23:15:31,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139109506] [2019-10-13 23:15:31,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:31,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-13 23:15:31,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:31,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:31,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:32,076 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:32,203 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:32,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:33,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:33,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:33,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:33,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:33,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:33,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:15:34,004 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:15:34,004 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-10-13 23:15:34,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544074607] [2019-10-13 23:15:34,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:15:34,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:34,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:15:34,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 23:15:34,006 INFO L87 Difference]: Start difference. First operand 355 states and 384 transitions. Second operand 12 states. [2019-10-13 23:15:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:35,781 INFO L93 Difference]: Finished difference Result 823 states and 930 transitions. [2019-10-13 23:15:35,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:15:35,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 125 [2019-10-13 23:15:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:35,786 INFO L225 Difference]: With dead ends: 823 [2019-10-13 23:15:35,786 INFO L226 Difference]: Without dead ends: 493 [2019-10-13 23:15:35,788 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 224 SyntacticMatches, 12 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=305, Invalid=1765, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 23:15:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-13 23:15:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 427. [2019-10-13 23:15:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-13 23:15:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 465 transitions. [2019-10-13 23:15:35,811 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 465 transitions. Word has length 125 [2019-10-13 23:15:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:35,812 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 465 transitions. [2019-10-13 23:15:35,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:15:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 465 transitions. [2019-10-13 23:15:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 23:15:35,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:35,815 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:36,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:36,020 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:36,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1724913290, now seen corresponding path program 1 times [2019-10-13 23:15:36,021 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:36,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486486796] [2019-10-13 23:15:36,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:36,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:36,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:15:36,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486486796] [2019-10-13 23:15:36,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064574580] [2019-10-13 23:15:36,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:36,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 50 conjunts are in the unsatisfiable core [2019-10-13 23:15:36,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:36,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:36,851 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:37,050 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:37,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,432 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:37,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:15:38,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [903629110] [2019-10-13 23:15:38,089 INFO L162 IcfgInterpreter]: Started Sifa with 98 locations of interest [2019-10-13 23:15:38,089 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:15:38,095 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:15:38,104 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:15:38,105 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:15:48,079 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:15:49,747 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:15:49,871 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:15:50,033 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:15:50,143 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:15:50,370 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:50,591 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:50,834 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:51,082 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:51,441 WARN L191 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:15:51,616 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:51,800 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:51,942 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:52,069 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:52,192 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:15:52,199 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:15:52,455 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:15:52,456 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:15:52,569 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:15:52,673 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:15:52,802 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:53,040 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:15:53,170 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:53,297 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:15:53,422 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:15:53,541 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:53,773 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 546 [2019-10-13 23:15:54,021 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:54,145 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:15:54,377 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:54,691 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:55,052 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:55,366 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:55,676 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:55,791 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:15:56,004 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:56,313 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:56,549 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:15:56,667 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:56,982 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:57,144 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:57,252 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:57,388 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:57,502 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:57,612 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:57,737 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:57,845 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:57,953 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:58,068 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:15:58,207 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:15:58,339 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:15:58,459 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:58,659 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-13 23:15:58,767 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:15:58,888 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:58,999 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:15:59,107 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:15:59,245 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:59,368 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:15:59,476 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:15:59,597 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:59,706 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:59,818 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:15:59,939 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:00,065 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:00,197 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:00,319 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:00,523 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-13 23:16:00,633 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:00,765 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:00,877 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:00,988 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:01,114 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:01,363 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:01,639 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:01,946 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:02,117 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:02,224 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:02,368 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:02,476 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:02,585 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:02,723 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:02,851 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564