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_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:23:28,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:23:28,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:23:28,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:23:28,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:23:28,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:23:28,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:23:28,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:23:28,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:23:28,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:23:28,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:23:28,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:23:28,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:23:28,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:23:28,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:23:28,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:23:28,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:23:28,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:23:28,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:23:28,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:23:28,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:23:28,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:23:28,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:23:28,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:23:28,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:23:28,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:23:28,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:23:28,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:23:28,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:23:28,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:23:28,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:23:28,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:23:28,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:23:28,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:23:28,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:23:28,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:23:28,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:23:28,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:23:28,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:23:28,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:23:28,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:23:28,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:23:28,244 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:23:28,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:23:28,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:23:28,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:23:28,246 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:23:28,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:23:28,246 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:23:28,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:23:28,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:23:28,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:23:28,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:23:28,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:23:28,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:23:28,249 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:23:28,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:23:28,249 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:23:28,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:23:28,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:23:28,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:23:28,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:23:28,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:23:28,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:28,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:23:28,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:23:28,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:23:28,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:23:28,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:23:28,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:23:28,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:23:28,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:23:28,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:23:28,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:23:28,522 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:23:28,522 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:23:28,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-10-15 03:23:28,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9436f6891/a0ecf0f103324138901da0f0cdb66abf/FLAG9f0edcd19 [2019-10-15 03:23:29,105 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:23:29,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-10-15 03:23:29,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9436f6891/a0ecf0f103324138901da0f0cdb66abf/FLAG9f0edcd19 [2019-10-15 03:23:29,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9436f6891/a0ecf0f103324138901da0f0cdb66abf [2019-10-15 03:23:29,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:23:29,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:23:29,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:29,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:23:29,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:23:29,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:29" (1/1) ... [2019-10-15 03:23:29,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34930f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:29, skipping insertion in model container [2019-10-15 03:23:29,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:29" (1/1) ... [2019-10-15 03:23:29,438 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:23:29,483 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:23:29,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:29,944 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:23:30,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:30,094 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:23:30,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30 WrapperNode [2019-10-15 03:23:30,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:30,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:23:30,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:23:30,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:23:30,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... [2019-10-15 03:23:30,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:23:30,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:23:30,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:23:30,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:23:30,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:30,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:23:30,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:23:30,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:30,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:30,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:30,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:30,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:23:30,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:23:30,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:23:30,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:23:30,254 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:23:30,254 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:23:30,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:23:30,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:23:30,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:23:30,255 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-15 03:23:30,255 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:23:30,255 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:23:30,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:23:30,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:23:30,256 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:23:30,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:23:30,256 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:23:30,256 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:23:30,257 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:23:30,257 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:23:30,257 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:23:30,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:23:30,257 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:23:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:23:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:23:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:23:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:23:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:23:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:23:30,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:23:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:23:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:23:30,259 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:23:30,260 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:23:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:23:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:23:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:23:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:23:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:23:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:23:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:23:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:23:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:23:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:23:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:23:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:23:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:23:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:23:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:23:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:23:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:23:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:23:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:23:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:23:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:23:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:23:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:23:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:23:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:23:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:23:30,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:23:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:23:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:23:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:23:30,271 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:23:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-15 03:23:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:23:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:23:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:23:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:23:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:23:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:23:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:23:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:23:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:23:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:23:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:23:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:23:31,911 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:23:31,912 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:23:31,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:31 BoogieIcfgContainer [2019-10-15 03:23:31,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:23:31,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:23:31,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:23:31,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:23:31,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:29" (1/3) ... [2019-10-15 03:23:31,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4191dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:31, skipping insertion in model container [2019-10-15 03:23:31,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:30" (2/3) ... [2019-10-15 03:23:31,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4191dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:31, skipping insertion in model container [2019-10-15 03:23:31,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:31" (3/3) ... [2019-10-15 03:23:31,922 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2019-10-15 03:23:31,931 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:23:31,942 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:23:31,954 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:23:32,008 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:23:32,009 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:23:32,009 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:23:32,009 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:23:32,010 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:23:32,010 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:23:32,011 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:23:32,011 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:23:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2019-10-15 03:23:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:23:32,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:32,065 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:32,067 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:32,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:32,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1086490687, now seen corresponding path program 1 times [2019-10-15 03:23:32,088 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:32,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592150142] [2019-10-15 03:23:32,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:32,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592150142] [2019-10-15 03:23:32,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:32,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:23:32,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907159485] [2019-10-15 03:23:32,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:23:32,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:32,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:23:32,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:32,483 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 2 states. [2019-10-15 03:23:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:32,526 INFO L93 Difference]: Finished difference Result 258 states and 315 transitions. [2019-10-15 03:23:32,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:23:32,528 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:23:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:32,551 INFO L225 Difference]: With dead ends: 258 [2019-10-15 03:23:32,552 INFO L226 Difference]: Without dead ends: 131 [2019-10-15 03:23:32,560 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-10-15 03:23:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-10-15 03:23:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-10-15 03:23:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2019-10-15 03:23:32,619 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 52 [2019-10-15 03:23:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:32,620 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2019-10-15 03:23:32,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:23:32,620 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2019-10-15 03:23:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:23:32,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:32,624 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:32,625 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash -245124710, now seen corresponding path program 1 times [2019-10-15 03:23:32,625 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:32,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115463049] [2019-10-15 03:23:32,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:32,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115463049] [2019-10-15 03:23:32,769 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:32,769 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:23:32,769 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192787530] [2019-10-15 03:23:32,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:23:32,772 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:32,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:23:32,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:32,772 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 3 states. [2019-10-15 03:23:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:32,797 INFO L93 Difference]: Finished difference Result 206 states and 240 transitions. [2019-10-15 03:23:32,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:23:32,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:23:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:32,801 INFO L225 Difference]: With dead ends: 206 [2019-10-15 03:23:32,801 INFO L226 Difference]: Without dead ends: 123 [2019-10-15 03:23:32,803 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-15 03:23:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-10-15 03:23:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-15 03:23:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2019-10-15 03:23:32,829 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 53 [2019-10-15 03:23:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:32,829 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2019-10-15 03:23:32,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:23:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2019-10-15 03:23:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 03:23:32,835 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:32,835 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] [2019-10-15 03:23:32,836 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:32,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:32,837 INFO L82 PathProgramCache]: Analyzing trace with hash 180018834, now seen corresponding path program 1 times [2019-10-15 03:23:32,837 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:32,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606104976] [2019-10-15 03:23:32,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:32,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:33,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606104976] [2019-10-15 03:23:33,055 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:33,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:33,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032750552] [2019-10-15 03:23:33,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:33,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:33,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:33,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:33,057 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2019-10-15 03:23:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:33,555 INFO L93 Difference]: Finished difference Result 369 states and 443 transitions. [2019-10-15 03:23:33,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:23:33,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-15 03:23:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:33,560 INFO L225 Difference]: With dead ends: 369 [2019-10-15 03:23:33,560 INFO L226 Difference]: Without dead ends: 271 [2019-10-15 03:23:33,562 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:23:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-10-15 03:23:33,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 259. [2019-10-15 03:23:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-15 03:23:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 310 transitions. [2019-10-15 03:23:33,631 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 310 transitions. Word has length 57 [2019-10-15 03:23:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:33,635 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 310 transitions. [2019-10-15 03:23:33,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 310 transitions. [2019-10-15 03:23:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:23:33,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:33,644 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] [2019-10-15 03:23:33,644 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:33,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1964479830, now seen corresponding path program 1 times [2019-10-15 03:23:33,645 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:33,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782915322] [2019-10-15 03:23:33,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:33,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:23:33,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782915322] [2019-10-15 03:23:33,815 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:33,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:33,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675357268] [2019-10-15 03:23:33,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:33,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:33,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:33,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:33,819 INFO L87 Difference]: Start difference. First operand 259 states and 310 transitions. Second operand 7 states. [2019-10-15 03:23:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:34,609 INFO L93 Difference]: Finished difference Result 678 states and 875 transitions. [2019-10-15 03:23:34,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:23:34,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:23:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:34,615 INFO L225 Difference]: With dead ends: 678 [2019-10-15 03:23:34,615 INFO L226 Difference]: Without dead ends: 444 [2019-10-15 03:23:34,617 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 03:23:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-15 03:23:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 393. [2019-10-15 03:23:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-10-15 03:23:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 464 transitions. [2019-10-15 03:23:34,661 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 464 transitions. Word has length 61 [2019-10-15 03:23:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:34,663 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 464 transitions. [2019-10-15 03:23:34,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:34,663 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 464 transitions. [2019-10-15 03:23:34,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 03:23:34,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:34,667 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] [2019-10-15 03:23:34,668 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:34,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:34,668 INFO L82 PathProgramCache]: Analyzing trace with hash -247602698, now seen corresponding path program 1 times [2019-10-15 03:23:34,668 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:34,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977708755] [2019-10-15 03:23:34,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:34,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:34,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:35,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977708755] [2019-10-15 03:23:35,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:35,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:23:35,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917149123] [2019-10-15 03:23:35,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:23:35,018 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:35,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:23:35,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:23:35,020 INFO L87 Difference]: Start difference. First operand 393 states and 464 transitions. Second operand 12 states. [2019-10-15 03:23:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:35,923 INFO L93 Difference]: Finished difference Result 1170 states and 1427 transitions. [2019-10-15 03:23:35,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:23:35,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2019-10-15 03:23:35,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:35,930 INFO L225 Difference]: With dead ends: 1170 [2019-10-15 03:23:35,930 INFO L226 Difference]: Without dead ends: 802 [2019-10-15 03:23:35,932 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:35,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2019-10-15 03:23:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 780. [2019-10-15 03:23:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-10-15 03:23:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 941 transitions. [2019-10-15 03:23:35,998 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 941 transitions. Word has length 92 [2019-10-15 03:23:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:35,999 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 941 transitions. [2019-10-15 03:23:35,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:23:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 941 transitions. [2019-10-15 03:23:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 03:23:36,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:36,004 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] [2019-10-15 03:23:36,004 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1439103342, now seen corresponding path program 1 times [2019-10-15 03:23:36,005 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:36,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671683295] [2019-10-15 03:23:36,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:36,005 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:36,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:36,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671683295] [2019-10-15 03:23:36,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:36,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:23:36,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41265812] [2019-10-15 03:23:36,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:23:36,270 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:36,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:23:36,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:23:36,271 INFO L87 Difference]: Start difference. First operand 780 states and 941 transitions. Second operand 9 states. [2019-10-15 03:23:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:37,334 INFO L93 Difference]: Finished difference Result 2516 states and 3144 transitions. [2019-10-15 03:23:37,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:23:37,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2019-10-15 03:23:37,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:37,348 INFO L225 Difference]: With dead ends: 2516 [2019-10-15 03:23:37,348 INFO L226 Difference]: Without dead ends: 1923 [2019-10-15 03:23:37,352 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 [2019-10-15 03:23:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2019-10-15 03:23:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1643. [2019-10-15 03:23:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2019-10-15 03:23:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2001 transitions. [2019-10-15 03:23:37,463 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2001 transitions. Word has length 95 [2019-10-15 03:23:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:37,464 INFO L462 AbstractCegarLoop]: Abstraction has 1643 states and 2001 transitions. [2019-10-15 03:23:37,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:23:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2001 transitions. [2019-10-15 03:23:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 03:23:37,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:37,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:37,468 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:37,468 INFO L82 PathProgramCache]: Analyzing trace with hash -825514903, now seen corresponding path program 1 times [2019-10-15 03:23:37,468 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:37,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105602465] [2019-10-15 03:23:37,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:37,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:37,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:23:37,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105602465] [2019-10-15 03:23:37,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120361545] [2019-10-15 03:23:37,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:23:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:37,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:23:37,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:23:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:23:38,068 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:23:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:23:38,481 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [172935488] [2019-10-15 03:23:38,512 INFO L162 IcfgInterpreter]: Started Sifa with 108 locations of interest [2019-10-15 03:23:38,513 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:23:38,520 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:23:38,528 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:23:38,528 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:23:48,370 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:23:50,105 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:23:50,242 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:50,370 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:50,488 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:50,745 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:50,990 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:51,236 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:51,714 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:52,467 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:23:52,908 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,189 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,427 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,642 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,894 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,904 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:23:54,180 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:23:54,181 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:23:54,333 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:54,459 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:54,638 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:54,760 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:54,882 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:55,007 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,170 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:55,404 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:55,635 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:23:55,762 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:55,924 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,034 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,251 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,356 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,477 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,618 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,930 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:57,043 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,265 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:57,473 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,591 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:57,695 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,817 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,938 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:58,249 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:58,581 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:58,894 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,043 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,155 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,311 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,565 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:59,676 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,801 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,911 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,021 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,140 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,293 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:00,405 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:00,530 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:00,744 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:00,856 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:00,984 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:01,224 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:01,346 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:01,468 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:01,581 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:01,692 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:01,815 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:01,932 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,050 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,248 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:02,381 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,493 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,617 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:02,829 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:02,942 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,084 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:03,197 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,310 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,433 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:03,660 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:03,770 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:03,894 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,097 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:04,208 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,331 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,441 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,552 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,671 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:04,910 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:05,033 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,166 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,284 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,397 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,538 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,738 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:05,850 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,973 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,205 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:06,318 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:06,443 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,644 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:06,756 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:06,895 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:07,119 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:07,230 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:07,363 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:07,576 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:07,687 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:07,814 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:07,924 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:08,035 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:08,164 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:08,432 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:08,542 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:08,664 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564