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/elevator_spec2_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:07:51,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:07:51,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:07:51,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:07:51,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:07:51,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:07:51,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:07:51,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:07:51,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:07:51,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:07:51,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:07:51,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:07:51,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:07:51,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:07:51,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:07:51,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:07:51,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:07:51,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:07:51,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:07:51,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:07:51,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:07:51,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:07:51,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:07:51,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:07:51,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:07:51,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:07:51,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:07:51,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:07:51,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:07:51,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:07:51,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:07:51,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:07:51,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:07:51,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:07:51,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:07:51,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:07:51,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:07:51,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:07:51,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:07:51,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:07:51,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:07:51,343 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 03:07:51,375 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:07:51,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:07:51,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:07:51,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:07:51,381 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:07:51,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:07:51,382 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:07:51,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:07:51,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:07:51,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:07:51,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:07:51,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:07:51,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:07:51,383 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:07:51,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:07:51,384 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:07:51,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:07:51,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:07:51,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:07:51,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:07:51,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:07:51,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:07:51,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:07:51,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:07:51,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:07:51,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:07:51,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:07:51,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:07:51,386 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 03:07:51,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:07:51,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:07:51,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:07:51,712 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:07:51,712 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:07:51,713 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c [2019-10-15 03:07:51,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6132fdcca/18bd139fcefe4374bc486d7dbecdb651/FLAG5d057c3b8 [2019-10-15 03:07:52,554 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:07:52,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c [2019-10-15 03:07:52,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6132fdcca/18bd139fcefe4374bc486d7dbecdb651/FLAG5d057c3b8 [2019-10-15 03:07:52,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6132fdcca/18bd139fcefe4374bc486d7dbecdb651 [2019-10-15 03:07:52,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:07:52,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:07:52,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:52,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:07:52,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:07:52,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:52" (1/1) ... [2019-10-15 03:07:52,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6617fe27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:52, skipping insertion in model container [2019-10-15 03:07:52,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:52" (1/1) ... [2019-10-15 03:07:52,741 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:07:52,804 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:07:53,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:53,598 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:07:53,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:07:53,843 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:07:53,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53 WrapperNode [2019-10-15 03:07:53,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:07:53,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:07:53,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:07:53,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:07:53,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:53,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:53,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:53,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:53,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:54,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:54,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (1/1) ... [2019-10-15 03:07:54,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:07:54,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:07:54,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:07:54,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:07:54,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (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 03:07:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:07:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:07:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:07:54,153 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:07:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:07:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:07:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:07:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:07:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:07:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:07:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:07:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:07:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:07:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:07:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:07:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:07:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:07:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:07:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:07:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:07:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:07:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:07:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:07:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:07:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:07:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:07:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:07:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:07:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:07:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:07:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:07:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:07:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:07:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:07:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:07:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:07:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:07:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:07:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:07:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:07:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:07:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:07:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:07:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:07:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:07:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:07:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:07:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:07:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:07:54,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:07:54,167 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:07:54,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:07:54,167 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:07:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:07:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:07:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:07:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:07:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:07:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:54,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:07:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:07:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:07:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:07:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:07:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:07:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:07:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:07:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:07:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:07:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:07:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:07:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:07:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:07:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:07:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:07:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:07:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:07:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:07:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:07:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:07:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:07:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:07:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:07:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:07:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:07:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:07:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:07:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:07:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:07:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:07:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:07:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:07:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:07:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:07:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:07:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:07:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:07:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:07:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:07:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:07:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:07:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:07:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:07:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:07:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:07:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:07:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:07:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:07:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:07:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:07:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:07:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:07:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:07:54,183 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:07:54,187 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:07:54,188 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:07:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:07:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:07:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:07:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:07:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:07:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:07:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:07:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:07:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:07:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:07:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:07:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:07:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:07:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:07:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:07:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:07:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:07:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:07:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:07:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:07:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:07:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:07:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:07:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:07:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:07:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:07:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:07:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:07:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:07:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:07:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:07:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:07:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:07:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:07:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:07:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:07:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:00,945 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:00,945 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:00,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:00 BoogieIcfgContainer [2019-10-15 03:08:00,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:00,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:00,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:00,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:00,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:52" (1/3) ... [2019-10-15 03:08:00,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494bb22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:00, skipping insertion in model container [2019-10-15 03:08:00,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:53" (2/3) ... [2019-10-15 03:08:00,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494bb22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:00, skipping insertion in model container [2019-10-15 03:08:00,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:00" (3/3) ... [2019-10-15 03:08:00,957 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2019-10-15 03:08:00,967 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:00,978 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:00,990 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:01,023 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:01,023 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:01,024 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:01,024 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:01,024 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:01,024 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:01,024 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:01,024 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2019-10-15 03:08:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 03:08:01,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:01,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:01,099 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:01,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash -197342042, now seen corresponding path program 1 times [2019-10-15 03:08:01,118 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:01,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657900228] [2019-10-15 03:08:01,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:01,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:01,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:01,894 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 03:08:01,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657900228] [2019-10-15 03:08:01,896 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:01,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:01,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196700350] [2019-10-15 03:08:01,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:01,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:01,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:01,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:01,930 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 2 states. [2019-10-15 03:08:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:02,024 INFO L93 Difference]: Finished difference Result 440 states and 662 transitions. [2019-10-15 03:08:02,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:02,029 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 92 [2019-10-15 03:08:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:02,092 INFO L225 Difference]: With dead ends: 440 [2019-10-15 03:08:02,093 INFO L226 Difference]: Without dead ends: 406 [2019-10-15 03:08:02,103 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 03:08:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2019-10-15 03:08:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2019-10-15 03:08:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2019-10-15 03:08:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 611 transitions. [2019-10-15 03:08:02,223 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 611 transitions. Word has length 92 [2019-10-15 03:08:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:02,225 INFO L462 AbstractCegarLoop]: Abstraction has 406 states and 611 transitions. [2019-10-15 03:08:02,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:02,226 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 611 transitions. [2019-10-15 03:08:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 03:08:02,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:02,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:02,235 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:02,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:02,235 INFO L82 PathProgramCache]: Analyzing trace with hash 194023073, now seen corresponding path program 1 times [2019-10-15 03:08:02,236 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:02,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949625493] [2019-10-15 03:08:02,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:02,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:02,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:02,663 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 03:08:02,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949625493] [2019-10-15 03:08:02,664 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:02,664 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:02,664 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060757262] [2019-10-15 03:08:02,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:02,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:02,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:02,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:02,668 INFO L87 Difference]: Start difference. First operand 406 states and 611 transitions. Second operand 8 states. [2019-10-15 03:08:02,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:02,915 INFO L93 Difference]: Finished difference Result 809 states and 1249 transitions. [2019-10-15 03:08:02,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:02,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-15 03:08:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:02,924 INFO L225 Difference]: With dead ends: 809 [2019-10-15 03:08:02,924 INFO L226 Difference]: Without dead ends: 445 [2019-10-15 03:08:02,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-15 03:08:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 410. [2019-10-15 03:08:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2019-10-15 03:08:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 615 transitions. [2019-10-15 03:08:03,015 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 615 transitions. Word has length 93 [2019-10-15 03:08:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:03,016 INFO L462 AbstractCegarLoop]: Abstraction has 410 states and 615 transitions. [2019-10-15 03:08:03,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 615 transitions. [2019-10-15 03:08:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:08:03,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:03,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:03,022 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:03,023 INFO L82 PathProgramCache]: Analyzing trace with hash -131924270, now seen corresponding path program 1 times [2019-10-15 03:08:03,023 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:03,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016579349] [2019-10-15 03:08:03,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:03,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:03,366 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 03:08:03,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016579349] [2019-10-15 03:08:03,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:03,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:03,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128663065] [2019-10-15 03:08:03,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:03,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:03,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:03,372 INFO L87 Difference]: Start difference. First operand 410 states and 615 transitions. Second operand 7 states. [2019-10-15 03:08:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:08,399 INFO L93 Difference]: Finished difference Result 1261 states and 1954 transitions. [2019-10-15 03:08:08,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:08:08,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-15 03:08:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:08,411 INFO L225 Difference]: With dead ends: 1261 [2019-10-15 03:08:08,412 INFO L226 Difference]: Without dead ends: 893 [2019-10-15 03:08:08,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:08:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-10-15 03:08:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 866. [2019-10-15 03:08:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2019-10-15 03:08:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1345 transitions. [2019-10-15 03:08:08,513 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1345 transitions. Word has length 97 [2019-10-15 03:08:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:08,517 INFO L462 AbstractCegarLoop]: Abstraction has 866 states and 1345 transitions. [2019-10-15 03:08:08,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1345 transitions. [2019-10-15 03:08:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 03:08:08,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:08,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:08,527 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:08,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:08,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1573335478, now seen corresponding path program 1 times [2019-10-15 03:08:08,528 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:08,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529351387] [2019-10-15 03:08:08,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:08,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:08,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:08,696 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 03:08:08,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529351387] [2019-10-15 03:08:08,696 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:08,697 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:08:08,697 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279184400] [2019-10-15 03:08:08,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:08:08,698 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:08,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:08:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:08,698 INFO L87 Difference]: Start difference. First operand 866 states and 1345 transitions. Second operand 5 states. [2019-10-15 03:08:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:08,806 INFO L93 Difference]: Finished difference Result 1371 states and 2142 transitions. [2019-10-15 03:08:08,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:08,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-15 03:08:08,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:08,815 INFO L225 Difference]: With dead ends: 1371 [2019-10-15 03:08:08,816 INFO L226 Difference]: Without dead ends: 888 [2019-10-15 03:08:08,820 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2019-10-15 03:08:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 878. [2019-10-15 03:08:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2019-10-15 03:08:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1360 transitions. [2019-10-15 03:08:08,890 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1360 transitions. Word has length 101 [2019-10-15 03:08:08,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:08,891 INFO L462 AbstractCegarLoop]: Abstraction has 878 states and 1360 transitions. [2019-10-15 03:08:08,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:08:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1360 transitions. [2019-10-15 03:08:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-15 03:08:08,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:08,895 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, 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 03:08:08,895 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1632653326, now seen corresponding path program 1 times [2019-10-15 03:08:08,896 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:08,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793506793] [2019-10-15 03:08:08,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:08,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:08,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:09,178 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 03:08:09,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793506793] [2019-10-15 03:08:09,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:09,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:08:09,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930930158] [2019-10-15 03:08:09,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:08:09,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:09,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:08:09,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:09,181 INFO L87 Difference]: Start difference. First operand 878 states and 1360 transitions. Second operand 8 states. [2019-10-15 03:08:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:14,243 INFO L93 Difference]: Finished difference Result 1861 states and 2887 transitions. [2019-10-15 03:08:14,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:08:14,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-15 03:08:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:14,254 INFO L225 Difference]: With dead ends: 1861 [2019-10-15 03:08:14,254 INFO L226 Difference]: Without dead ends: 1270 [2019-10-15 03:08:14,258 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:08:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2019-10-15 03:08:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1220. [2019-10-15 03:08:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-10-15 03:08:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1848 transitions. [2019-10-15 03:08:14,326 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1848 transitions. Word has length 105 [2019-10-15 03:08:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:14,327 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1848 transitions. [2019-10-15 03:08:14,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:08:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1848 transitions. [2019-10-15 03:08:14,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-15 03:08:14,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:14,330 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, 1, 1, 1, 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 03:08:14,331 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash -421968763, now seen corresponding path program 1 times [2019-10-15 03:08:14,331 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:14,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941849449] [2019-10-15 03:08:14,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:14,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:14,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:14,563 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 03:08:14,564 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941849449] [2019-10-15 03:08:14,564 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:14,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:14,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112592914] [2019-10-15 03:08:14,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:14,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:14,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:14,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:14,566 INFO L87 Difference]: Start difference. First operand 1220 states and 1848 transitions. Second operand 7 states. [2019-10-15 03:08:14,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:14,865 INFO L93 Difference]: Finished difference Result 2297 states and 3563 transitions. [2019-10-15 03:08:14,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:08:14,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-15 03:08:14,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:14,876 INFO L225 Difference]: With dead ends: 2297 [2019-10-15 03:08:14,876 INFO L226 Difference]: Without dead ends: 1220 [2019-10-15 03:08:14,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:08:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2019-10-15 03:08:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2019-10-15 03:08:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-10-15 03:08:14,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1816 transitions. [2019-10-15 03:08:14,945 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1816 transitions. Word has length 108 [2019-10-15 03:08:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:14,947 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1816 transitions. [2019-10-15 03:08:14,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1816 transitions. [2019-10-15 03:08:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:08:14,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:14,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:14,951 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash 194645655, now seen corresponding path program 1 times [2019-10-15 03:08:14,952 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:14,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778628807] [2019-10-15 03:08:14,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:14,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:14,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:15,152 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 03:08:15,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778628807] [2019-10-15 03:08:15,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:15,153 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:15,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334475556] [2019-10-15 03:08:15,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:15,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:15,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:15,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:15,155 INFO L87 Difference]: Start difference. First operand 1220 states and 1816 transitions. Second operand 7 states. [2019-10-15 03:08:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:19,179 INFO L93 Difference]: Finished difference Result 2166 states and 3233 transitions. [2019-10-15 03:08:19,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:19,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-15 03:08:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:19,190 INFO L225 Difference]: With dead ends: 2166 [2019-10-15 03:08:19,191 INFO L226 Difference]: Without dead ends: 1290 [2019-10-15 03:08:19,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2019-10-15 03:08:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1247. [2019-10-15 03:08:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-10-15 03:08:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1850 transitions. [2019-10-15 03:08:19,258 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1850 transitions. Word has length 110 [2019-10-15 03:08:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:19,259 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 1850 transitions. [2019-10-15 03:08:19,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1850 transitions. [2019-10-15 03:08:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 03:08:19,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:19,262 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:19,263 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:19,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:19,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1816254151, now seen corresponding path program 1 times [2019-10-15 03:08:19,264 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:19,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775057807] [2019-10-15 03:08:19,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:19,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:19,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:08:19,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775057807] [2019-10-15 03:08:19,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:19,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:19,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474680841] [2019-10-15 03:08:19,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:19,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:19,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:19,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:19,459 INFO L87 Difference]: Start difference. First operand 1247 states and 1850 transitions. Second operand 4 states. [2019-10-15 03:08:21,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:21,549 INFO L93 Difference]: Finished difference Result 3781 states and 5741 transitions. [2019-10-15 03:08:21,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:21,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-10-15 03:08:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:21,586 INFO L225 Difference]: With dead ends: 3781 [2019-10-15 03:08:21,586 INFO L226 Difference]: Without dead ends: 2576 [2019-10-15 03:08:21,603 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2019-10-15 03:08:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2431. [2019-10-15 03:08:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-10-15 03:08:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3664 transitions. [2019-10-15 03:08:21,809 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3664 transitions. Word has length 114 [2019-10-15 03:08:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:21,811 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 3664 transitions. [2019-10-15 03:08:21,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:21,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3664 transitions. [2019-10-15 03:08:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:21,817 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:21,817 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:21,818 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:21,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1436453714, now seen corresponding path program 1 times [2019-10-15 03:08:21,819 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:21,819 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745585393] [2019-10-15 03:08:21,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:21,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:21,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:08:22,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745585393] [2019-10-15 03:08:22,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:22,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:22,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60512346] [2019-10-15 03:08:22,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:22,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:22,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:22,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:22,135 INFO L87 Difference]: Start difference. First operand 2431 states and 3664 transitions. Second operand 4 states. [2019-10-15 03:08:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:24,181 INFO L93 Difference]: Finished difference Result 7255 states and 11187 transitions. [2019-10-15 03:08:24,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:24,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-15 03:08:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:24,225 INFO L225 Difference]: With dead ends: 7255 [2019-10-15 03:08:24,225 INFO L226 Difference]: Without dead ends: 4867 [2019-10-15 03:08:24,241 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2019-10-15 03:08:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4689. [2019-10-15 03:08:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4689 states. [2019-10-15 03:08:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 7158 transitions. [2019-10-15 03:08:24,632 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 7158 transitions. Word has length 118 [2019-10-15 03:08:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:24,633 INFO L462 AbstractCegarLoop]: Abstraction has 4689 states and 7158 transitions. [2019-10-15 03:08:24,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 7158 transitions. [2019-10-15 03:08:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:08:24,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:24,637 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:24,637 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:24,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:24,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1579114007, now seen corresponding path program 1 times [2019-10-15 03:08:24,637 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:24,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651565107] [2019-10-15 03:08:24,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:24,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:24,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:08:24,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651565107] [2019-10-15 03:08:24,805 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:24,805 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:24,806 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83288975] [2019-10-15 03:08:24,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:24,807 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:24,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:24,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:24,808 INFO L87 Difference]: Start difference. First operand 4689 states and 7158 transitions. Second operand 4 states. [2019-10-15 03:08:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:27,463 INFO L93 Difference]: Finished difference Result 14111 states and 22271 transitions. [2019-10-15 03:08:27,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:27,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 03:08:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:27,560 INFO L225 Difference]: With dead ends: 14111 [2019-10-15 03:08:27,560 INFO L226 Difference]: Without dead ends: 9467 [2019-10-15 03:08:27,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:27,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2019-10-15 03:08:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9224. [2019-10-15 03:08:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9224 states. [2019-10-15 03:08:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 14364 transitions. [2019-10-15 03:08:28,440 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 14364 transitions. Word has length 119 [2019-10-15 03:08:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:28,441 INFO L462 AbstractCegarLoop]: Abstraction has 9224 states and 14364 transitions. [2019-10-15 03:08:28,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 14364 transitions. [2019-10-15 03:08:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:08:28,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:28,447 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:28,447 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1706619700, now seen corresponding path program 1 times [2019-10-15 03:08:28,448 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:28,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314486997] [2019-10-15 03:08:28,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:28,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:28,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:08:28,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314486997] [2019-10-15 03:08:28,644 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:28,644 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:28,645 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615425226] [2019-10-15 03:08:28,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:28,646 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:28,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:28,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:28,647 INFO L87 Difference]: Start difference. First operand 9224 states and 14364 transitions. Second operand 4 states.