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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:20:14,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:20:14,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:20:14,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:20:14,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:20:14,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:20:14,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:20:14,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:20:14,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:20:14,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:20:14,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:20:14,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:20:14,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:20:14,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:20:14,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:20:14,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:20:14,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:20:14,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:20:14,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:20:14,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:20:14,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:20:14,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:20:14,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:20:14,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:20:14,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:20:14,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:20:14,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:20:14,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:20:14,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:20:14,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:20:14,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:20:14,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:20:14,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:20:14,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:20:14,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:20:14,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:20:14,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:20:14,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:20:14,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:20:14,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:20:14,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:20:14,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:20:14,079 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:20:14,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:20:14,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:20:14,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:20:14,082 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:20:14,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:20:14,082 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:20:14,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:20:14,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:20:14,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:20:14,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:20:14,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:20:14,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:20:14,083 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:20:14,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:20:14,084 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:20:14,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:20:14,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:20:14,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:20:14,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:20:14,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:20:14,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:14,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:20:14,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:20:14,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:20:14,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:20:14,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:20:14,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:20:14,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:20:14,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:20:14,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:20:14,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:20:14,394 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:20:14,394 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:20:14,395 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2019-10-15 03:20:14,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b6b6ee8/7ee447ab41a04dcc9a06c1bfb8d9156d/FLAGf88b7106f [2019-10-15 03:20:15,009 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:20:15,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2019-10-15 03:20:15,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b6b6ee8/7ee447ab41a04dcc9a06c1bfb8d9156d/FLAGf88b7106f [2019-10-15 03:20:15,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b6b6ee8/7ee447ab41a04dcc9a06c1bfb8d9156d [2019-10-15 03:20:15,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:20:15,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:20:15,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:15,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:20:15,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:20:15,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:15" (1/1) ... [2019-10-15 03:20:15,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cbab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:15, skipping insertion in model container [2019-10-15 03:20:15,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:15" (1/1) ... [2019-10-15 03:20:15,306 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:20:15,379 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:20:15,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:15,902 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:20:16,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:16,048 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:20:16,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16 WrapperNode [2019-10-15 03:20:16,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:16,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:20:16,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:20:16,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:20:16,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (1/1) ... [2019-10-15 03:20:16,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (1/1) ... [2019-10-15 03:20:16,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (1/1) ... [2019-10-15 03:20:16,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (1/1) ... [2019-10-15 03:20:16,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (1/1) ... [2019-10-15 03:20:16,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (1/1) ... [2019-10-15 03:20:16,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (1/1) ... [2019-10-15 03:20:16,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:20:16,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:20:16,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:20:16,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:20:16,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:20:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:20:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:16,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:20:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:20:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:20:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:20:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:20:16,253 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:20:16,253 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:20:16,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:20:16,253 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:20:16,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:20:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:20:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:20:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:20:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:20:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-15 03:20:16,257 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:20:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:20:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:20:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:20:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:20:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:20:16,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:20:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:20:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:20:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:20:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:20:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:20:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:20:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:20:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:20:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:20:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:20:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:20:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:20:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:20:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:20:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:20:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:20:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:20:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:20:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:20:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:20:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:20:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:20:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:20:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:20:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:20:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:20:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:20:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:20:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:20:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:20:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:20:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:20:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:20:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:20:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:20:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:20:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:20:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:20:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:20:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:20:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:20:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:20:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:20:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:20:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:20:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:20:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:20:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:20:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:20:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-15 03:20:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:20:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:20:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:20:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:20:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:20:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:20:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:20:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:20:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:20:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:20:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:20:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:20:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:20:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:20:17,904 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:20:17,904 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:20:17,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:17 BoogieIcfgContainer [2019-10-15 03:20:17,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:20:17,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:20:17,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:20:17,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:20:17,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:20:15" (1/3) ... [2019-10-15 03:20:17,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220c03d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:17, skipping insertion in model container [2019-10-15 03:20:17,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:16" (2/3) ... [2019-10-15 03:20:17,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220c03d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:17, skipping insertion in model container [2019-10-15 03:20:17,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:17" (3/3) ... [2019-10-15 03:20:17,914 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2019-10-15 03:20:17,924 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:20:17,933 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:20:17,945 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:20:17,989 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:20:17,989 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:20:17,990 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:20:17,990 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:20:17,990 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:20:17,990 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:20:17,991 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:20:17,992 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:20:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-10-15 03:20:18,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:20:18,038 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:18,040 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] [2019-10-15 03:20:18,043 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash -94018598, now seen corresponding path program 1 times [2019-10-15 03:20:18,063 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:18,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557933020] [2019-10-15 03:20:18,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:18,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:18,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:18,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557933020] [2019-10-15 03:20:18,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:18,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:20:18,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571864716] [2019-10-15 03:20:18,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:20:18,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:18,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:20:18,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:18,480 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-10-15 03:20:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:18,528 INFO L93 Difference]: Finished difference Result 264 states and 325 transitions. [2019-10-15 03:20:18,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:20:18,530 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-15 03:20:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:18,546 INFO L225 Difference]: With dead ends: 264 [2019-10-15 03:20:18,546 INFO L226 Difference]: Without dead ends: 134 [2019-10-15 03:20:18,551 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:18,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-10-15 03:20:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-10-15 03:20:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-15 03:20:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2019-10-15 03:20:18,618 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2019-10-15 03:20:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:18,619 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2019-10-15 03:20:18,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:20:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2019-10-15 03:20:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:20:18,623 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:18,623 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] [2019-10-15 03:20:18,624 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:18,624 INFO L82 PathProgramCache]: Analyzing trace with hash -942720183, now seen corresponding path program 1 times [2019-10-15 03:20:18,625 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:18,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968725469] [2019-10-15 03:20:18,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:18,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:18,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:18,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968725469] [2019-10-15 03:20:18,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:18,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:18,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836742010] [2019-10-15 03:20:18,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:18,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:18,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:18,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:18,782 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 3 states. [2019-10-15 03:20:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:18,834 INFO L93 Difference]: Finished difference Result 212 states and 250 transitions. [2019-10-15 03:20:18,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:18,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 03:20:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:18,841 INFO L225 Difference]: With dead ends: 212 [2019-10-15 03:20:18,841 INFO L226 Difference]: Without dead ends: 126 [2019-10-15 03:20:18,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-15 03:20:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-15 03:20:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-15 03:20:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2019-10-15 03:20:18,881 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 47 [2019-10-15 03:20:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:18,882 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2019-10-15 03:20:18,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2019-10-15 03:20:18,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 03:20:18,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:18,890 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] [2019-10-15 03:20:18,890 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:18,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1287564491, now seen corresponding path program 1 times [2019-10-15 03:20:18,892 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:18,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740447860] [2019-10-15 03:20:18,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:18,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:18,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:19,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740447860] [2019-10-15 03:20:19,135 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:19,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:19,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246245229] [2019-10-15 03:20:19,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:19,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:19,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:19,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:19,137 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 7 states. [2019-10-15 03:20:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:19,672 INFO L93 Difference]: Finished difference Result 374 states and 453 transitions. [2019-10-15 03:20:19,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:20:19,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-10-15 03:20:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:19,676 INFO L225 Difference]: With dead ends: 374 [2019-10-15 03:20:19,676 INFO L226 Difference]: Without dead ends: 273 [2019-10-15 03:20:19,677 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:20:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-10-15 03:20:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2019-10-15 03:20:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2019-10-15 03:20:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 315 transitions. [2019-10-15 03:20:19,712 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 315 transitions. Word has length 51 [2019-10-15 03:20:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:19,713 INFO L462 AbstractCegarLoop]: Abstraction has 261 states and 315 transitions. [2019-10-15 03:20:19,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 315 transitions. [2019-10-15 03:20:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-15 03:20:19,716 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:19,716 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] [2019-10-15 03:20:19,717 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:19,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1396472504, now seen corresponding path program 1 times [2019-10-15 03:20:19,717 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:19,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60937902] [2019-10-15 03:20:19,718 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:19,718 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:19,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:19,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60937902] [2019-10-15 03:20:19,833 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:19,833 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:20:19,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166983085] [2019-10-15 03:20:19,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:19,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:19,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:19,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:20:19,835 INFO L87 Difference]: Start difference. First operand 261 states and 315 transitions. Second operand 6 states. [2019-10-15 03:20:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:20,088 INFO L93 Difference]: Finished difference Result 715 states and 882 transitions. [2019-10-15 03:20:20,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:20:20,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-15 03:20:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:20,098 INFO L225 Difference]: With dead ends: 715 [2019-10-15 03:20:20,099 INFO L226 Difference]: Without dead ends: 479 [2019-10-15 03:20:20,105 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 [2019-10-15 03:20:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2019-10-15 03:20:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 467. [2019-10-15 03:20:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-15 03:20:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 567 transitions. [2019-10-15 03:20:20,179 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 567 transitions. Word has length 55 [2019-10-15 03:20:20,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:20,180 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 567 transitions. [2019-10-15 03:20:20,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 567 transitions. [2019-10-15 03:20:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-15 03:20:20,183 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:20,183 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] [2019-10-15 03:20:20,183 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash -753021792, now seen corresponding path program 1 times [2019-10-15 03:20:20,184 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:20,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90887634] [2019-10-15 03:20:20,184 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:20,184 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:20,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:20,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90887634] [2019-10-15 03:20:20,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:20,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:20,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168533483] [2019-10-15 03:20:20,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:20,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:20,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:20,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:20,283 INFO L87 Difference]: Start difference. First operand 467 states and 567 transitions. Second operand 7 states. [2019-10-15 03:20:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:20,957 INFO L93 Difference]: Finished difference Result 1235 states and 1626 transitions. [2019-10-15 03:20:20,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:20:20,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-15 03:20:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:20,964 INFO L225 Difference]: With dead ends: 1235 [2019-10-15 03:20:20,965 INFO L226 Difference]: Without dead ends: 793 [2019-10-15 03:20:20,967 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 [2019-10-15 03:20:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2019-10-15 03:20:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 704. [2019-10-15 03:20:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-10-15 03:20:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 848 transitions. [2019-10-15 03:20:21,068 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 848 transitions. Word has length 58 [2019-10-15 03:20:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:21,069 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 848 transitions. [2019-10-15 03:20:21,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 848 transitions. [2019-10-15 03:20:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-15 03:20:21,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:21,073 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:21,073 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash -737223390, now seen corresponding path program 1 times [2019-10-15 03:20:21,074 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:21,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918520470] [2019-10-15 03:20:21,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:21,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918520470] [2019-10-15 03:20:21,187 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:21,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:21,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34290266] [2019-10-15 03:20:21,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:21,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:21,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:21,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:21,189 INFO L87 Difference]: Start difference. First operand 704 states and 848 transitions. Second operand 3 states. [2019-10-15 03:20:21,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:21,248 INFO L93 Difference]: Finished difference Result 999 states and 1230 transitions. [2019-10-15 03:20:21,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:21,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-15 03:20:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:21,256 INFO L225 Difference]: With dead ends: 999 [2019-10-15 03:20:21,256 INFO L226 Difference]: Without dead ends: 996 [2019-10-15 03:20:21,257 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-10-15 03:20:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 956. [2019-10-15 03:20:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2019-10-15 03:20:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1177 transitions. [2019-10-15 03:20:21,321 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1177 transitions. Word has length 81 [2019-10-15 03:20:21,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:21,322 INFO L462 AbstractCegarLoop]: Abstraction has 956 states and 1177 transitions. [2019-10-15 03:20:21,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:21,322 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1177 transitions. [2019-10-15 03:20:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 03:20:21,327 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:21,327 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, 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] [2019-10-15 03:20:21,327 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:21,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:21,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1180956023, now seen corresponding path program 1 times [2019-10-15 03:20:21,328 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:21,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833386860] [2019-10-15 03:20:21,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:20:21,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833386860] [2019-10-15 03:20:21,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671744547] [2019-10-15 03:20:21,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:21,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:20:21,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:20:22,072 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:22,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:22,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:20:22,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1763228363] [2019-10-15 03:20:22,537 INFO L162 IcfgInterpreter]: Started Sifa with 97 locations of interest [2019-10-15 03:20:22,537 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:20:22,544 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:20:22,564 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:20:22,565 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:20:32,884 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:20:34,685 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:20:34,840 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:35,039 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:35,251 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:35,693 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:35,961 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:36,280 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:36,570 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:37,036 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:20:37,237 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:37,428 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:37,631 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:37,772 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:37,922 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:37,932 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:20:38,289 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:20:38,291 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 548 for LOIs [2019-10-15 03:20:38,428 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:38,545 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:38,683 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:38,861 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:39,014 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:39,148 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:39,275 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:39,393 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:39,563 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:39,798 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 548 [2019-10-15 03:20:39,914 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:40,085 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:40,239 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:40,342 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:40,500 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:40,603 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:40,707 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:40,870 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:40,973 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:41,076 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:41,201 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:41,309 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:41,425 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:41,567 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:41,700 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:41,807 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:41,935 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:42,042 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:42,150 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:42,283 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:42,404 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:42,507 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:42,633 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:42,736 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:42,851 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:42,975 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:43,080 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:43,202 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:20:43,346 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:43,547 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:43,664 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:43,803 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:44,043 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:44,177 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:44,319 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:44,437 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:44,556 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:44,683 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:44,845 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:44,961 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:45,099 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:45,359 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:20:45,477 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:45,761 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:46,030 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:20:46,159 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:46,288 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:46,412 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:46,537 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:46,675 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:46,795 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:46,913 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:47,042 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:47,180 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:47,297 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:47,461 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:47,695 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:20:47,811 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:47,943 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:48,060 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:48,178 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:48,311 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:48,560 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:48,682 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:48,819 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,039 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:49,154 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,281 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,396 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,516 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,659 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,887 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:20:50,005 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:50,137 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:50,259 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:50,376 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:50,512 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:50,628 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:50,750 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:50,879 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:51,080 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:20:51,206 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:51,336 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:51,545 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:20:51,666 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:51,807 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:52,040 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:52,156 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,283 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,501 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:52,622 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,792 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,907 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,028 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,153 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,376 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:53,490 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,614 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,825 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:53,952 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,081 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,209 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,328 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,453 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,675 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:20:54,791 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:54,921 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:55,042 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:55,160 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568