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_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:19:04,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:19:04,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:19:04,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:19:04,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:19:04,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:19:04,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:19:04,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:19:04,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:19:04,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:19:04,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:19:04,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:19:04,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:19:04,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:19:04,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:19:04,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:19:04,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:19:05,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:19:05,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:19:05,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:19:05,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:19:05,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:19:05,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:19:05,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:19:05,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:19:05,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:19:05,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:19:05,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:19:05,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:19:05,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:19:05,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:19:05,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:19:05,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:19:05,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:19:05,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:19:05,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:19:05,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:19:05,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:19:05,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:19:05,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:19:05,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:19:05,030 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 23:19:05,064 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:19:05,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:19:05,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:19:05,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:19:05,068 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:19:05,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:19:05,069 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:19:05,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:19:05,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:19:05,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:19:05,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:19:05,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:19:05,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:19:05,072 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:19:05,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:19:05,072 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:19:05,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:19:05,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:19:05,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:19:05,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:19:05,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:19:05,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:19:05,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:19:05,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:19:05,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:19:05,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:19:05,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:19:05,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:19:05,076 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 23:19:05,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:19:05,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:19:05,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:19:05,390 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:19:05,391 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:19:05,392 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2019-10-13 23:19:05,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0973b2aab/09ac2cfb4b9241299f4d060097d2df43/FLAG8840642d4 [2019-10-13 23:19:05,916 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:19:05,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2019-10-13 23:19:05,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0973b2aab/09ac2cfb4b9241299f4d060097d2df43/FLAG8840642d4 [2019-10-13 23:19:06,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0973b2aab/09ac2cfb4b9241299f4d060097d2df43 [2019-10-13 23:19:06,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:19:06,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:19:06,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:19:06,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:19:06,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:19:06,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691f1eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06, skipping insertion in model container [2019-10-13 23:19:06,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,269 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:19:06,337 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:19:06,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:19:06,834 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:19:06,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:19:06,976 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:19:06,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06 WrapperNode [2019-10-13 23:19:06,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:19:06,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:19:06,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:19:06,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:19:06,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:06,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:07,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:07,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:07,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:07,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:07,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (1/1) ... [2019-10-13 23:19:07,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:19:07,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:19:07,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:19:07,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:19:07,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (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 23:19:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:19:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:19:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:19:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:19:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:19:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:19:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:19:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:19:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:19:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:19:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:19:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:19:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:19:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:19:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:19:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:19:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:19:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:19:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:19:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:19:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:19:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:19:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:19:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:19:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:19:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:19:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:19:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:19:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:19:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:19:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:19:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:19:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:19:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:19:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:19:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:19:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:19:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:19:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:19:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:19:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:19:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:19:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:19:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:19:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:19:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:19:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:19:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:19:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:19:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:19:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:19:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:19:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:19:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:19:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:19:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:19:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:19:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:19:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:19:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:19:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:19:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:19:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:19:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:19:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:19:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:19:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:19:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:19:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:19:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:19:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:19:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:19:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:19:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:19:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:19:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:19:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:19:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:19:08,719 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:19:08,719 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:19:08,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:19:08 BoogieIcfgContainer [2019-10-13 23:19:08,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:19:08,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:19:08,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:19:08,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:19:08,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:19:06" (1/3) ... [2019-10-13 23:19:08,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbaa3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:19:08, skipping insertion in model container [2019-10-13 23:19:08,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:19:06" (2/3) ... [2019-10-13 23:19:08,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbaa3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:19:08, skipping insertion in model container [2019-10-13 23:19:08,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:19:08" (3/3) ... [2019-10-13 23:19:08,729 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2019-10-13 23:19:08,739 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:19:08,748 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:19:08,759 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:19:08,786 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:19:08,786 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:19:08,786 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:19:08,786 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:19:08,787 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:19:08,787 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:19:08,787 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:19:08,787 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:19:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-10-13 23:19:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:19:08,821 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:08,823 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] [2019-10-13 23:19:08,825 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:08,831 INFO L82 PathProgramCache]: Analyzing trace with hash 834246449, now seen corresponding path program 1 times [2019-10-13 23:19:08,841 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:08,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951127947] [2019-10-13 23:19:08,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:08,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:08,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:09,283 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 23:19:09,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951127947] [2019-10-13 23:19:09,285 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:09,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:19:09,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484354508] [2019-10-13 23:19:09,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:19:09,292 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:09,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:19:09,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:19:09,309 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2019-10-13 23:19:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:09,356 INFO L93 Difference]: Finished difference Result 270 states and 325 transitions. [2019-10-13 23:19:09,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:19:09,358 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:19:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:09,372 INFO L225 Difference]: With dead ends: 270 [2019-10-13 23:19:09,372 INFO L226 Difference]: Without dead ends: 137 [2019-10-13 23:19:09,378 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 23:19:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2019-10-13 23:19:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2019-10-13 23:19:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-13 23:19:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2019-10-13 23:19:09,449 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 52 [2019-10-13 23:19:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:09,450 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2019-10-13 23:19:09,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:19:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2019-10-13 23:19:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:19:09,460 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:09,463 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] [2019-10-13 23:19:09,463 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:09,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:09,465 INFO L82 PathProgramCache]: Analyzing trace with hash -640305549, now seen corresponding path program 1 times [2019-10-13 23:19:09,465 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:09,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839368836] [2019-10-13 23:19:09,466 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:09,466 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:09,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:09,683 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 23:19:09,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839368836] [2019-10-13 23:19:09,684 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:09,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:19:09,685 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646777829] [2019-10-13 23:19:09,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:19:09,688 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:19:09,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:19:09,689 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand 3 states. [2019-10-13 23:19:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:09,735 INFO L93 Difference]: Finished difference Result 218 states and 250 transitions. [2019-10-13 23:19:09,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:19:09,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:19:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:09,743 INFO L225 Difference]: With dead ends: 218 [2019-10-13 23:19:09,743 INFO L226 Difference]: Without dead ends: 129 [2019-10-13 23:19:09,748 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 23:19:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-10-13 23:19:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-10-13 23:19:09,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-13 23:19:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 147 transitions. [2019-10-13 23:19:09,785 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 147 transitions. Word has length 53 [2019-10-13 23:19:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:09,788 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 147 transitions. [2019-10-13 23:19:09,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:19:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 147 transitions. [2019-10-13 23:19:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 23:19:09,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:09,793 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] [2019-10-13 23:19:09,793 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:09,794 INFO L82 PathProgramCache]: Analyzing trace with hash -462781966, now seen corresponding path program 1 times [2019-10-13 23:19:09,794 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:09,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874323008] [2019-10-13 23:19:09,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:09,795 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:09,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:09,972 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 23:19:09,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874323008] [2019-10-13 23:19:09,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:09,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:19:09,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367212516] [2019-10-13 23:19:09,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:19:09,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:09,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:19:09,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:19:09,975 INFO L87 Difference]: Start difference. First operand 129 states and 147 transitions. Second operand 7 states. [2019-10-13 23:19:10,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:10,479 INFO L93 Difference]: Finished difference Result 387 states and 458 transitions. [2019-10-13 23:19:10,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:19:10,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-13 23:19:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:10,485 INFO L225 Difference]: With dead ends: 387 [2019-10-13 23:19:10,485 INFO L226 Difference]: Without dead ends: 283 [2019-10-13 23:19:10,487 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 23:19:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-10-13 23:19:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 271. [2019-10-13 23:19:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-10-13 23:19:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 320 transitions. [2019-10-13 23:19:10,532 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 320 transitions. Word has length 57 [2019-10-13 23:19:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:10,532 INFO L462 AbstractCegarLoop]: Abstraction has 271 states and 320 transitions. [2019-10-13 23:19:10,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:19:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 320 transitions. [2019-10-13 23:19:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 23:19:10,536 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:10,536 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] [2019-10-13 23:19:10,536 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:10,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash -831502054, now seen corresponding path program 1 times [2019-10-13 23:19:10,537 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:10,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592801246] [2019-10-13 23:19:10,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:10,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:10,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:19:10,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592801246] [2019-10-13 23:19:10,651 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:10,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:19:10,655 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381782138] [2019-10-13 23:19:10,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:19:10,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:10,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:19:10,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:19:10,658 INFO L87 Difference]: Start difference. First operand 271 states and 320 transitions. Second operand 7 states. [2019-10-13 23:19:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:11,387 INFO L93 Difference]: Finished difference Result 690 states and 885 transitions. [2019-10-13 23:19:11,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:19:11,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-13 23:19:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:11,393 INFO L225 Difference]: With dead ends: 690 [2019-10-13 23:19:11,393 INFO L226 Difference]: Without dead ends: 444 [2019-10-13 23:19:11,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:19:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-13 23:19:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 393. [2019-10-13 23:19:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-10-13 23:19:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 464 transitions. [2019-10-13 23:19:11,441 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 464 transitions. Word has length 61 [2019-10-13 23:19:11,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:11,441 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 464 transitions. [2019-10-13 23:19:11,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:19:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 464 transitions. [2019-10-13 23:19:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 23:19:11,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:11,446 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] [2019-10-13 23:19:11,446 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1533788192, now seen corresponding path program 1 times [2019-10-13 23:19:11,447 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:11,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768870714] [2019-10-13 23:19:11,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:11,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:11,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:11,684 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 23:19:11,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768870714] [2019-10-13 23:19:11,685 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:11,685 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:19:11,686 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215217176] [2019-10-13 23:19:11,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:19:11,687 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:11,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:19:11,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:19:11,688 INFO L87 Difference]: Start difference. First operand 393 states and 464 transitions. Second operand 12 states. [2019-10-13 23:19:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:12,629 INFO L93 Difference]: Finished difference Result 1170 states and 1427 transitions. [2019-10-13 23:19:12,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:19:12,629 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2019-10-13 23:19:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:12,638 INFO L225 Difference]: With dead ends: 1170 [2019-10-13 23:19:12,639 INFO L226 Difference]: Without dead ends: 802 [2019-10-13 23:19:12,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:19:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2019-10-13 23:19:12,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 780. [2019-10-13 23:19:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-10-13 23:19:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 941 transitions. [2019-10-13 23:19:12,708 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 941 transitions. Word has length 92 [2019-10-13 23:19:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:12,709 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 941 transitions. [2019-10-13 23:19:12,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:19:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 941 transitions. [2019-10-13 23:19:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 23:19:12,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:12,712 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, 1] [2019-10-13 23:19:12,713 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1527193909, now seen corresponding path program 1 times [2019-10-13 23:19:12,713 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:12,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103266276] [2019-10-13 23:19:12,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:12,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:12,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:12,915 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 23:19:12,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103266276] [2019-10-13 23:19:12,917 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:19:12,917 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:19:12,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420075362] [2019-10-13 23:19:12,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:19:12,920 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:19:12,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:19:12,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:19:12,921 INFO L87 Difference]: Start difference. First operand 780 states and 941 transitions. Second operand 9 states. [2019-10-13 23:19:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:14,172 INFO L93 Difference]: Finished difference Result 2516 states and 3144 transitions. [2019-10-13 23:19:14,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:19:14,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2019-10-13 23:19:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:14,219 INFO L225 Difference]: With dead ends: 2516 [2019-10-13 23:19:14,220 INFO L226 Difference]: Without dead ends: 1923 [2019-10-13 23:19:14,222 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:19:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2019-10-13 23:19:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1643. [2019-10-13 23:19:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2019-10-13 23:19:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2001 transitions. [2019-10-13 23:19:14,351 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2001 transitions. Word has length 95 [2019-10-13 23:19:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:14,352 INFO L462 AbstractCegarLoop]: Abstraction has 1643 states and 2001 transitions. [2019-10-13 23:19:14,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:19:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2001 transitions. [2019-10-13 23:19:14,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 23:19:14,358 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:14,358 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:14,359 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:14,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:14,359 INFO L82 PathProgramCache]: Analyzing trace with hash 729883461, now seen corresponding path program 1 times [2019-10-13 23:19:14,359 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:14,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407033515] [2019-10-13 23:19:14,360 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:14,360 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:14,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:19:14,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407033515] [2019-10-13 23:19:14,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421925138] [2019-10-13 23:19:14,560 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 23:19:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:14,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:19:14,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:19:14,983 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:19:15,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803619460] [2019-10-13 23:19:15,569 INFO L162 IcfgInterpreter]: Started Sifa with 114 locations of interest [2019-10-13 23:19:15,569 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:15,580 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:15,597 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:15,598 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:23,991 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:25,517 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:25,688 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:25,812 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:25,985 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:26,346 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:26,619 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:26,808 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:27,011 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:27,458 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:19:27,687 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:27,898 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,065 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,184 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,333 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:28,342 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:19:28,644 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:19:28,645 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:19:28,803 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:28,934 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,141 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,277 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,420 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,565 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,703 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,815 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:29,983 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,206 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-13 23:19:30,464 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,601 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:30,704 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:30,833 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,190 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,328 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:31,553 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,655 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:31,877 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:32,097 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:32,220 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:32,325 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:32,544 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:32,757 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:32,905 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:33,235 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:33,337 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:33,441 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:33,562 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:33,725 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:33,837 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:33,966 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,213 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:34,342 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,474 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,611 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,738 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,860 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:34,993 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:35,105 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:35,240 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:35,377 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:35,492 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:35,791 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:36,016 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:36,130 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:36,254 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:36,369 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:36,484 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:36,618 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:36,748 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:36,874 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:37,000 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:37,145 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:37,259 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:37,386 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:37,605 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:37,720 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:37,870 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:37,985 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:38,099 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:38,225 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:38,456 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:38,569 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:38,704 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:38,952 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:39,070 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,197 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,310 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,431 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,553 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:39,680 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:39,797 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:39,931 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,050 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,178 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,313 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,428 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,543 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,667 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:40,880 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-13 23:19:40,995 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:41,126 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:41,346 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-13 23:19:41,465 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:41,599 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:41,825 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:41,938 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,063 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,271 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:42,383 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,511 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,624 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,737 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:42,858 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,076 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:43,189 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,316 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,523 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:43,652 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,779 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:43,891 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:44,004 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:44,126 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:44,341 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:44,457 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:44,610 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:44,859 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:44,983 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:45,113 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:45,310 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:45,423 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:45,548 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:45,745 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:45,860 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:45,987 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:46,218 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:46,338 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564