java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:23:29,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:23:29,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:23:29,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:23:29,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:23:29,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:23:29,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:23:29,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:23:29,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:23:29,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:23:29,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:23:29,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:23:29,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:23:29,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:23:29,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:23:29,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:23:29,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:23:29,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:23:29,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:23:29,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:23:29,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:23:29,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:23:29,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:23:29,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:23:29,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:23:29,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:23:29,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:23:29,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:23:29,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:23:29,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:23:29,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:23:29,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:23:29,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:23:29,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:23:29,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:23:29,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:23:29,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:23:29,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:23:29,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:23:29,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:23:29,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:23:29,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:23:29,186 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:23:29,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:23:29,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:23:29,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:23:29,189 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:23:29,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:23:29,190 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:23:29,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:23:29,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:23:29,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:23:29,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:23:29,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:23:29,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:23:29,191 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:23:29,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:23:29,192 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:23:29,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:23:29,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:23:29,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:23:29,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:23:29,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:23:29,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:29,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:23:29,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:23:29,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:23:29,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:23:29,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:23:29,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:23:29,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:23:29,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:23:29,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:23:29,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:23:29,532 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:23:29,532 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:23:29,533 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2019-10-15 03:23:29,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d5d75ad/cb2ce6ab0df347e2a8cbbc6a18682db2/FLAG67972fb0c [2019-10-15 03:23:30,132 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:23:30,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2019-10-15 03:23:30,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d5d75ad/cb2ce6ab0df347e2a8cbbc6a18682db2/FLAG67972fb0c [2019-10-15 03:23:30,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d5d75ad/cb2ce6ab0df347e2a8cbbc6a18682db2 [2019-10-15 03:23:30,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:23:30,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:23:30,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:30,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:23:30,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:23:30,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588a9aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30, skipping insertion in model container [2019-10-15 03:23:30,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,465 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:23:30,525 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:23:31,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:31,056 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:23:31,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:31,212 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:23:31,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31 WrapperNode [2019-10-15 03:23:31,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:31,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:23:31,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:23:31,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:23:31,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:23:31,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:23:31,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:23:31,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:23:31,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:23:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:23:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:31,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:23:31,352 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:23:31,352 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:23:31,352 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:31,352 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:23:31,352 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:23:31,353 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:23:31,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:23:31,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:23:31,353 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:23:31,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:23:31,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:23:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:23:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:23:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:23:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:23:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:23:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:23:31,355 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:23:31,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:23:31,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:23:31,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:23:31,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:31,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:31,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:31,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:23:31,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:23:31,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:23:31,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:31,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:23:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:23:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:23:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:23:31,358 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:23:31,358 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:23:31,358 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:23:31,358 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:23:31,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:23:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:23:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:23:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:23:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:23:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:23:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:23:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:23:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:23:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:23:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:23:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:23:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:23:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:23:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:23:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:23:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:23:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:23:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:23:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:23:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:23:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:23:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:23:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:23:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:23:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:23:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:23:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:23:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:23:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:23:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:23:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:23:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:23:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:23:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:23:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:23:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:23:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:23:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:23:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:23:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:23:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:23:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:23:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:23:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:23:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:23:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:23:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:23:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:23:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:23:32,973 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:23:32,974 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:23:32,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:32 BoogieIcfgContainer [2019-10-15 03:23:32,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:23:32,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:23:32,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:23:32,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:23:32,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:30" (1/3) ... [2019-10-15 03:23:32,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c489e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:32, skipping insertion in model container [2019-10-15 03:23:32,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31" (2/3) ... [2019-10-15 03:23:32,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c489e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:32, skipping insertion in model container [2019-10-15 03:23:32,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:32" (3/3) ... [2019-10-15 03:23:32,983 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2019-10-15 03:23:32,993 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:23:33,003 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:23:33,015 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:23:33,043 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:23:33,043 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:23:33,044 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:23:33,044 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:23:33,045 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:23:33,045 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:23:33,045 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:23:33,045 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:23:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2019-10-15 03:23:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:23:33,089 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:33,090 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:33,092 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:33,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1708035582, now seen corresponding path program 1 times [2019-10-15 03:23:33,107 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:33,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747885980] [2019-10-15 03:23:33,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:33,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747885980] [2019-10-15 03:23:33,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:33,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:23:33,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143792261] [2019-10-15 03:23:33,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:23:33,479 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:33,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:23:33,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:33,504 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 2 states. [2019-10-15 03:23:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:33,582 INFO L93 Difference]: Finished difference Result 232 states and 279 transitions. [2019-10-15 03:23:33,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:23:33,583 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:23:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:33,602 INFO L225 Difference]: With dead ends: 232 [2019-10-15 03:23:33,602 INFO L226 Difference]: Without dead ends: 118 [2019-10-15 03:23:33,611 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-15 03:23:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-10-15 03:23:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-10-15 03:23:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2019-10-15 03:23:33,677 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 52 [2019-10-15 03:23:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:33,678 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2019-10-15 03:23:33,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:23:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2019-10-15 03:23:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:23:33,682 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:33,683 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:33,683 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:33,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1973649622, now seen corresponding path program 1 times [2019-10-15 03:23:33,684 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:33,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454167818] [2019-10-15 03:23:33,684 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,685 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:33,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454167818] [2019-10-15 03:23:33,850 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:33,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:23:33,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209024764] [2019-10-15 03:23:33,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:23:33,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:33,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:23:33,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:33,856 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 3 states. [2019-10-15 03:23:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:33,901 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2019-10-15 03:23:33,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:23:33,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:23:33,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:33,907 INFO L225 Difference]: With dead ends: 186 [2019-10-15 03:23:33,907 INFO L226 Difference]: Without dead ends: 110 [2019-10-15 03:23:33,912 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:33,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-15 03:23:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-10-15 03:23:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-15 03:23:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2019-10-15 03:23:33,938 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 53 [2019-10-15 03:23:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:33,939 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2019-10-15 03:23:33,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:23:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2019-10-15 03:23:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 03:23:33,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:33,946 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:33,947 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:33,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:33,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1339955029, now seen corresponding path program 1 times [2019-10-15 03:23:33,948 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:33,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991142282] [2019-10-15 03:23:33,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:34,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991142282] [2019-10-15 03:23:34,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:34,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:34,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208862746] [2019-10-15 03:23:34,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:34,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:34,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:34,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:34,182 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 7 states. [2019-10-15 03:23:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:34,485 INFO L93 Difference]: Finished difference Result 195 states and 224 transitions. [2019-10-15 03:23:34,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:23:34,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-15 03:23:34,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:34,487 INFO L225 Difference]: With dead ends: 195 [2019-10-15 03:23:34,488 INFO L226 Difference]: Without dead ends: 110 [2019-10-15 03:23:34,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:23:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-15 03:23:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-10-15 03:23:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-15 03:23:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2019-10-15 03:23:34,502 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 56 [2019-10-15 03:23:34,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:34,504 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2019-10-15 03:23:34,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2019-10-15 03:23:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-15 03:23:34,506 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:34,506 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:34,506 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1723163158, now seen corresponding path program 1 times [2019-10-15 03:23:34,507 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:34,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649972273] [2019-10-15 03:23:34,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:34,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:34,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:34,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649972273] [2019-10-15 03:23:34,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:34,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:23:34,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236287022] [2019-10-15 03:23:34,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:23:34,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:34,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:23:34,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:23:34,615 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand 5 states. [2019-10-15 03:23:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:35,168 INFO L93 Difference]: Finished difference Result 289 states and 342 transitions. [2019-10-15 03:23:35,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:23:35,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2019-10-15 03:23:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:35,176 INFO L225 Difference]: With dead ends: 289 [2019-10-15 03:23:35,178 INFO L226 Difference]: Without dead ends: 204 [2019-10-15 03:23:35,179 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 [2019-10-15 03:23:35,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-10-15 03:23:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 187. [2019-10-15 03:23:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-10-15 03:23:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 209 transitions. [2019-10-15 03:23:35,229 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 209 transitions. Word has length 69 [2019-10-15 03:23:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:35,229 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 209 transitions. [2019-10-15 03:23:35,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:23:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 209 transitions. [2019-10-15 03:23:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 03:23:35,232 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:35,232 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:35,232 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:35,233 INFO L82 PathProgramCache]: Analyzing trace with hash 661229768, now seen corresponding path program 1 times [2019-10-15 03:23:35,233 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:35,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507629063] [2019-10-15 03:23:35,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:35,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:35,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:35,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507629063] [2019-10-15 03:23:35,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:35,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:23:35,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572903030] [2019-10-15 03:23:35,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:23:35,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:35,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:23:35,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:23:35,564 INFO L87 Difference]: Start difference. First operand 187 states and 209 transitions. Second operand 12 states. [2019-10-15 03:23:36,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:36,582 INFO L93 Difference]: Finished difference Result 503 states and 578 transitions. [2019-10-15 03:23:36,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:23:36,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2019-10-15 03:23:36,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:36,588 INFO L225 Difference]: With dead ends: 503 [2019-10-15 03:23:36,588 INFO L226 Difference]: Without dead ends: 341 [2019-10-15 03:23:36,589 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2019-10-15 03:23:36,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 329. [2019-10-15 03:23:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2019-10-15 03:23:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2019-10-15 03:23:36,626 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 78 [2019-10-15 03:23:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:36,626 INFO L462 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2019-10-15 03:23:36,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:23:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2019-10-15 03:23:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 03:23:36,628 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:36,629 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:36,629 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:36,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1630693714, now seen corresponding path program 1 times [2019-10-15 03:23:36,630 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:36,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152770167] [2019-10-15 03:23:36,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:36,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:36,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:23:36,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152770167] [2019-10-15 03:23:36,724 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:36,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:36,725 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661213848] [2019-10-15 03:23:36,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:36,726 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:36,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:36,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:36,726 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand 7 states. [2019-10-15 03:23:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:37,330 INFO L93 Difference]: Finished difference Result 661 states and 783 transitions. [2019-10-15 03:23:37,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:23:37,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2019-10-15 03:23:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:37,338 INFO L225 Difference]: With dead ends: 661 [2019-10-15 03:23:37,338 INFO L226 Difference]: Without dead ends: 357 [2019-10-15 03:23:37,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:23:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2019-10-15 03:23:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 326. [2019-10-15 03:23:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2019-10-15 03:23:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 368 transitions. [2019-10-15 03:23:37,392 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 368 transitions. Word has length 78 [2019-10-15 03:23:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:37,395 INFO L462 AbstractCegarLoop]: Abstraction has 326 states and 368 transitions. [2019-10-15 03:23:37,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 368 transitions. [2019-10-15 03:23:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:23:37,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:37,397 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:37,398 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:37,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:37,398 INFO L82 PathProgramCache]: Analyzing trace with hash -204144966, now seen corresponding path program 1 times [2019-10-15 03:23:37,399 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:37,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804308985] [2019-10-15 03:23:37,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:37,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:37,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:37,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804308985] [2019-10-15 03:23:37,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:37,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:23:37,600 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595816682] [2019-10-15 03:23:37,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:23:37,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:37,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:23:37,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:23:37,601 INFO L87 Difference]: Start difference. First operand 326 states and 368 transitions. Second operand 9 states. [2019-10-15 03:23:38,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:38,483 INFO L93 Difference]: Finished difference Result 999 states and 1158 transitions. [2019-10-15 03:23:38,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:23:38,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2019-10-15 03:23:38,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:38,489 INFO L225 Difference]: With dead ends: 999 [2019-10-15 03:23:38,489 INFO L226 Difference]: Without dead ends: 759 [2019-10-15 03:23:38,491 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:38,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-10-15 03:23:38,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 654. [2019-10-15 03:23:38,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-10-15 03:23:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 746 transitions. [2019-10-15 03:23:38,536 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 746 transitions. Word has length 81 [2019-10-15 03:23:38,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:38,536 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 746 transitions. [2019-10-15 03:23:38,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:23:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 746 transitions. [2019-10-15 03:23:38,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:23:38,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:38,539 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:38,539 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:38,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1911582456, now seen corresponding path program 1 times [2019-10-15 03:23:38,540 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:38,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752699574] [2019-10-15 03:23:38,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:38,541 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:38,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:23:38,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752699574] [2019-10-15 03:23:38,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602855307] [2019-10-15 03:23:38,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:23:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:38,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:23:38,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:23:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:23:39,125 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:23:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:23:39,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1870327927] [2019-10-15 03:23:39,566 INFO L162 IcfgInterpreter]: Started Sifa with 100 locations of interest [2019-10-15 03:23:39,567 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:23:39,574 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:23:39,583 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:23:39,584 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:23:50,418 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:23:52,085 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:23:52,223 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:52,354 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:52,502 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:52,762 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:52,981 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,198 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,419 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,947 WARN L191 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:23:54,165 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:54,322 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:54,468 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:54,608 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:54,738 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:54,748 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:23:54,957 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:23:55,070 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:55,210 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:55,411 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,528 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:55,631 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:55,811 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,946 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,176 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,484 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:23:56,740 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,033 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:57,203 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,470 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:57,578 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,805 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:57,910 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:58,053 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:58,175 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:58,494 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:58,709 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:58,831 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,042 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:59,169 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,374 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:59,520 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,841 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,049 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:00,184 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,346 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,459 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,585 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,808 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:00,921 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,090 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,203 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,316 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,438 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,571 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:01,686 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:01,815 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,058 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:02,174 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,448 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,833 WARN L191 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:02,957 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:03,090 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,214 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:03,328 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:03,464 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,580 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,695 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,824 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:03,963 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:04,081 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:04,208 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:04,430 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:04,546 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:04,684 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:04,799 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:04,915 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,057 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:05,290 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:05,403 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,537 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,746 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:05,860 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:05,990 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,106 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,234 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,357 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,489 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,606 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,736 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,981 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:07,098 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,235 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,447 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:07,564 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,692 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,909 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:08,025 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:08,156 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,368 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:08,485 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,629 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:08,860 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:08,986 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,115 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,336 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:09,452 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,586 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,700 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,817 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,946 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,170 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:10,287 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,414 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,651 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:10,768 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564