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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:15:59,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:15:59,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:15:59,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:15:59,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:15:59,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:15:59,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:15:59,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:15:59,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:15:59,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:15:59,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:15:59,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:15:59,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:15:59,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:15:59,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:15:59,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:15:59,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:15:59,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:15:59,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:15:59,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:15:59,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:15:59,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:15:59,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:15:59,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:15:59,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:15:59,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:15:59,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:15:59,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:15:59,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:15:59,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:15:59,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:15:59,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:15:59,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:15:59,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:15:59,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:15:59,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:15:59,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:15:59,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:15:59,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:15:59,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:15:59,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:15:59,118 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 23:15:59,132 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:15:59,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:15:59,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:15:59,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:15:59,134 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:15:59,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:15:59,135 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:15:59,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:15:59,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:15:59,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:15:59,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:15:59,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:15:59,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:15:59,137 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:15:59,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:15:59,137 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:15:59,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:15:59,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:15:59,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:15:59,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:15:59,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:15:59,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:15:59,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:15:59,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:15:59,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:15:59,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:15:59,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:15:59,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:15:59,141 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 23:15:59,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:15:59,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:15:59,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:15:59,525 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:15:59,526 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:15:59,526 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-10-13 23:15:59,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ce2d561/01b2988be6004f528875581c759ad9db/FLAGb3cd8cd9c [2019-10-13 23:16:00,093 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:16:00,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-10-13 23:16:00,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ce2d561/01b2988be6004f528875581c759ad9db/FLAGb3cd8cd9c [2019-10-13 23:16:00,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ce2d561/01b2988be6004f528875581c759ad9db [2019-10-13 23:16:00,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:16:00,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:16:00,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:16:00,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:16:00,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:16:00,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:00" (1/1) ... [2019-10-13 23:16:00,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437675f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:00, skipping insertion in model container [2019-10-13 23:16:00,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:00" (1/1) ... [2019-10-13 23:16:00,459 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:16:00,518 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:16:01,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:16:01,069 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:16:01,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:16:01,207 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:16:01,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01 WrapperNode [2019-10-13 23:16:01,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:16:01,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:16:01,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:16:01,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:16:01,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (1/1) ... [2019-10-13 23:16:01,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (1/1) ... [2019-10-13 23:16:01,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (1/1) ... [2019-10-13 23:16:01,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (1/1) ... [2019-10-13 23:16:01,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (1/1) ... [2019-10-13 23:16:01,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (1/1) ... [2019-10-13 23:16:01,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (1/1) ... [2019-10-13 23:16:01,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:16:01,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:16:01,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:16:01,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:16:01,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (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 23:16:01,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:16:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:16:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:16:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:16:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:16:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:16:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:16:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:16:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:16:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:16:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 23:16:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:16:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:16:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:16:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:16:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:16:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:16:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:16:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:16:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:16:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:16:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:16:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:16:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:16:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:16:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:16:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:16:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:16:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:16:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:16:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:16:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:16:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:16:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:16:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:16:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:16:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:16:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:16:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:16:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:16:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:16:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:16:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:16:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:16:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:16:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:16:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:16:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:16:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:16:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:16:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:16:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:16:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:16:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:16:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:16:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:16:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:16:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:16:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:16:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:16:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:16:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:16:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:16:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:16:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:16:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:16:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:16:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:16:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:16:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:16:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 23:16:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:16:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:16:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:16:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:16:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:16:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:16:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:16:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:16:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:16:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:16:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:16:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:16:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:16:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:16:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:16:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:16:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:16:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:16:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:16:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:16:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:16:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:16:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:16:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:16:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:16:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:16:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:16:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:16:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:16:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:16:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:16:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:16:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:16:03,015 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:16:03,016 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:16:03,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:03 BoogieIcfgContainer [2019-10-13 23:16:03,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:16:03,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:16:03,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:16:03,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:16:03,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:16:00" (1/3) ... [2019-10-13 23:16:03,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5417290f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:03, skipping insertion in model container [2019-10-13 23:16:03,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:01" (2/3) ... [2019-10-13 23:16:03,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5417290f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:03, skipping insertion in model container [2019-10-13 23:16:03,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:03" (3/3) ... [2019-10-13 23:16:03,028 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product64.cil.c [2019-10-13 23:16:03,038 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:16:03,047 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:16:03,059 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:16:03,095 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:16:03,095 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:16:03,095 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:16:03,095 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:16:03,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:16:03,097 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:16:03,097 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:16:03,097 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:16:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2019-10-13 23:16:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 23:16:03,138 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:03,139 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 23:16:03,142 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:03,152 INFO L82 PathProgramCache]: Analyzing trace with hash 283778306, now seen corresponding path program 1 times [2019-10-13 23:16:03,162 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:03,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595346335] [2019-10-13 23:16:03,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:03,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:03,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:03,493 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 23:16:03,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595346335] [2019-10-13 23:16:03,496 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:03,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:16:03,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849079793] [2019-10-13 23:16:03,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:16:03,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:03,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:16:03,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:16:03,528 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 2 states. [2019-10-13 23:16:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:03,574 INFO L93 Difference]: Finished difference Result 278 states and 343 transitions. [2019-10-13 23:16:03,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:16:03,576 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-13 23:16:03,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:03,590 INFO L225 Difference]: With dead ends: 278 [2019-10-13 23:16:03,591 INFO L226 Difference]: Without dead ends: 141 [2019-10-13 23:16:03,595 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 23:16:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-10-13 23:16:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-10-13 23:16:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 23:16:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2019-10-13 23:16:03,661 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 46 [2019-10-13 23:16:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:03,662 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2019-10-13 23:16:03,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:16:03,662 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2019-10-13 23:16:03,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 23:16:03,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:03,669 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 23:16:03,672 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:03,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1231722357, now seen corresponding path program 1 times [2019-10-13 23:16:03,673 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:03,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367261326] [2019-10-13 23:16:03,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:03,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:03,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:03,842 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 23:16:03,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367261326] [2019-10-13 23:16:03,844 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:03,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:16:03,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159010678] [2019-10-13 23:16:03,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:16:03,849 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:03,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:16:03,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:16:03,850 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 3 states. [2019-10-13 23:16:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:03,902 INFO L93 Difference]: Finished difference Result 226 states and 268 transitions. [2019-10-13 23:16:03,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:16:03,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-13 23:16:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:03,910 INFO L225 Difference]: With dead ends: 226 [2019-10-13 23:16:03,910 INFO L226 Difference]: Without dead ends: 133 [2019-10-13 23:16:03,912 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 [2019-10-13 23:16:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-10-13 23:16:03,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2019-10-13 23:16:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-10-13 23:16:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2019-10-13 23:16:03,931 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 47 [2019-10-13 23:16:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:03,931 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2019-10-13 23:16:03,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:16:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2019-10-13 23:16:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 23:16:03,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:03,934 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] [2019-10-13 23:16:03,935 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1222362210, now seen corresponding path program 1 times [2019-10-13 23:16:03,935 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:03,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978994708] [2019-10-13 23:16:03,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:03,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:03,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:04,128 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 23:16:04,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978994708] [2019-10-13 23:16:04,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:04,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:16:04,130 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841612268] [2019-10-13 23:16:04,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:16:04,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:04,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:16:04,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:16:04,132 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 7 states. [2019-10-13 23:16:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:04,681 INFO L93 Difference]: Finished difference Result 395 states and 480 transitions. [2019-10-13 23:16:04,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:16:04,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-10-13 23:16:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:04,685 INFO L225 Difference]: With dead ends: 395 [2019-10-13 23:16:04,686 INFO L226 Difference]: Without dead ends: 287 [2019-10-13 23:16:04,687 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 [2019-10-13 23:16:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2019-10-13 23:16:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 275. [2019-10-13 23:16:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-10-13 23:16:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 333 transitions. [2019-10-13 23:16:04,734 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 333 transitions. Word has length 51 [2019-10-13 23:16:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:04,735 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 333 transitions. [2019-10-13 23:16:04,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:16:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 333 transitions. [2019-10-13 23:16:04,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 23:16:04,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:04,738 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] [2019-10-13 23:16:04,738 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:04,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:04,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1675445681, now seen corresponding path program 1 times [2019-10-13 23:16:04,739 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:04,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887610409] [2019-10-13 23:16:04,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:04,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:04,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:04,843 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 23:16:04,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887610409] [2019-10-13 23:16:04,844 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:04,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:16:04,844 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949877814] [2019-10-13 23:16:04,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:16:04,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:04,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:16:04,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:16:04,849 INFO L87 Difference]: Start difference. First operand 275 states and 333 transitions. Second operand 6 states. [2019-10-13 23:16:05,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:05,121 INFO L93 Difference]: Finished difference Result 757 states and 936 transitions. [2019-10-13 23:16:05,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:16:05,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-13 23:16:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:05,127 INFO L225 Difference]: With dead ends: 757 [2019-10-13 23:16:05,128 INFO L226 Difference]: Without dead ends: 507 [2019-10-13 23:16:05,129 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 23:16:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2019-10-13 23:16:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 495. [2019-10-13 23:16:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2019-10-13 23:16:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 603 transitions. [2019-10-13 23:16:05,204 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 603 transitions. Word has length 55 [2019-10-13 23:16:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:05,205 INFO L462 AbstractCegarLoop]: Abstraction has 495 states and 603 transitions. [2019-10-13 23:16:05,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:16:05,205 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 603 transitions. [2019-10-13 23:16:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 23:16:05,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:05,212 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] [2019-10-13 23:16:05,212 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:05,213 INFO L82 PathProgramCache]: Analyzing trace with hash 923417440, now seen corresponding path program 1 times [2019-10-13 23:16:05,213 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:05,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145044314] [2019-10-13 23:16:05,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:05,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:05,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:05,355 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 23:16:05,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145044314] [2019-10-13 23:16:05,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:05,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:16:05,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280041454] [2019-10-13 23:16:05,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:16:05,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:05,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:16:05,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:16:05,358 INFO L87 Difference]: Start difference. First operand 495 states and 603 transitions. Second operand 7 states. [2019-10-13 23:16:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:06,060 INFO L93 Difference]: Finished difference Result 1315 states and 1722 transitions. [2019-10-13 23:16:06,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:16:06,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-13 23:16:06,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:06,067 INFO L225 Difference]: With dead ends: 1315 [2019-10-13 23:16:06,067 INFO L226 Difference]: Without dead ends: 845 [2019-10-13 23:16:06,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:16:06,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2019-10-13 23:16:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 756. [2019-10-13 23:16:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2019-10-13 23:16:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 908 transitions. [2019-10-13 23:16:06,142 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 908 transitions. Word has length 58 [2019-10-13 23:16:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:06,143 INFO L462 AbstractCegarLoop]: Abstraction has 756 states and 908 transitions. [2019-10-13 23:16:06,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:16:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 908 transitions. [2019-10-13 23:16:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 23:16:06,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:06,149 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:16:06,150 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:06,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:06,150 INFO L82 PathProgramCache]: Analyzing trace with hash 383580701, now seen corresponding path program 1 times [2019-10-13 23:16:06,150 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:06,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204959141] [2019-10-13 23:16:06,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:06,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:06,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:16:06,337 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204959141] [2019-10-13 23:16:06,337 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392966457] [2019-10-13 23:16:06,338 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 23:16:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:06,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 23:16:06,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:16:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:16:06,627 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:16:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:16:06,839 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:16:06,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-13 23:16:06,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325167262] [2019-10-13 23:16:06,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:16:06,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:06,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:16:06,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:16:06,841 INFO L87 Difference]: Start difference. First operand 756 states and 908 transitions. Second operand 3 states. [2019-10-13 23:16:06,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:06,906 INFO L93 Difference]: Finished difference Result 1077 states and 1320 transitions. [2019-10-13 23:16:06,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:16:06,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-13 23:16:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:06,913 INFO L225 Difference]: With dead ends: 1077 [2019-10-13 23:16:06,914 INFO L226 Difference]: Without dead ends: 1074 [2019-10-13 23:16:06,915 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:16:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2019-10-13 23:16:06,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1046. [2019-10-13 23:16:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-10-13 23:16:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1283 transitions. [2019-10-13 23:16:06,988 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1283 transitions. Word has length 94 [2019-10-13 23:16:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:06,989 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1283 transitions. [2019-10-13 23:16:06,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:16:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1283 transitions. [2019-10-13 23:16:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 23:16:06,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:06,996 INFO L380 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:16:07,201 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:16:07,202 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:07,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:07,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1300883013, now seen corresponding path program 1 times [2019-10-13 23:16:07,204 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:07,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799876985] [2019-10-13 23:16:07,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:07,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:07,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:16:07,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799876985] [2019-10-13 23:16:07,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008741658] [2019-10-13 23:16:07,454 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 23:16:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:07,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 23:16:07,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:16:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 43 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 23:16:07,905 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:16:08,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:16:08,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:16:08,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:16:08,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:16:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:16:08,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742363823] [2019-10-13 23:16:08,559 INFO L162 IcfgInterpreter]: Started Sifa with 114 locations of interest [2019-10-13 23:16:08,559 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:16:08,569 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:16:08,575 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:16:08,576 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:16:18,244 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:16:20,088 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:16:20,218 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:20,401 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:20,524 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:20,781 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:21,007 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:21,222 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:21,426 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:21,828 WARN L191 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:16:21,979 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:22,144 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:22,275 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:22,421 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:22,546 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:22,557 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:16:22,838 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 548 for LOIs [2019-10-13 23:16:22,996 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:23,233 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:23,448 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:23,699 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:23,841 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:24,065 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:24,330 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 548 [2019-10-13 23:16:24,443 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:24,573 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:24,940 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:25,043 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:25,147 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:25,273 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:25,486 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:25,645 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:25,959 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:26,166 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:26,307 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:26,624 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:26,939 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:27,058 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:27,178 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-13 23:16:27,299 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:27,616 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:27,755 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:27,864 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:28,030 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:28,145 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:28,255 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:28,391 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:28,502 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:28,614 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:28,737 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:28,936 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:29,050 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:29,175 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:29,393 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:16:29,511 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:29,642 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:29,882 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:16:30,006 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:30,126 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:30,246 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:16:30,358 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:16:30,489 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-13 23:16:30,606 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:30,719 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:30,869 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:31,003 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:31,117 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:31,259 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:31,485 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-13 23:16:31,600 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:31,726 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:31,847 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:31,962 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:32,085 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:32,217 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:32,325 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:32,452 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:32,564 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:32,672 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:32,797 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:32,924 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:33,032 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:33,162 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:33,389 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:16:33,502 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:33,627 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:33,749 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:33,859 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:33,992 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:34,201 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:16:34,312 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:34,433 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:34,634 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 566 [2019-10-13 23:16:34,753 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:34,878 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:35,108 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 568 [2019-10-13 23:16:35,220 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:35,357 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:16:35,484 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:35,597 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:35,721 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:35,834 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:35,946 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,072 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,184 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,293 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,415 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,544 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,653 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,773 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,886 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:36,997 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:37,119 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:37,253 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:37,378 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:37,496 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:37,708 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:16:37,820 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:37,948 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:38,382 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:38,503 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:38,637 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:38,830 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:38,947 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:39,069 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:39,272 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-13 23:16:39,381 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:39,503 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:39,695 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-13 23:16:39,815 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:16:39,939 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:16:40,241 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-13 23:16:40,354 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:40,480 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:40,688 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-13 23:16:40,803 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:40,929 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-13 23:16:41,174 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:41,457 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 564