/usr/bin/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_spec9_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:13:04,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:13:04,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:13:04,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:13:04,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:13:04,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:13:04,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:13:04,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:13:04,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:13:04,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:13:04,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:13:04,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:13:04,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:13:04,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:13:04,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:13:04,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:13:04,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:13:04,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:13:04,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:13:04,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:13:04,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:13:04,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:13:04,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:13:04,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:13:04,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:13:04,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:13:04,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:13:04,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:13:04,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:13:04,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:13:04,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:13:04,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:13:04,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:13:04,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:13:04,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:13:04,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:13:04,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:13:04,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:13:04,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:13:04,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:13:04,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:13:04,281 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 [2019-11-07 04:13:04,303 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:13:04,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:13:04,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:13:04,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:13:04,305 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:13:04,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:13:04,305 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:13:04,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:13:04,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:13:04,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:13:04,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:13:04,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:13:04,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:13:04,308 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:13:04,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:13:04,309 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:13:04,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:13:04,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:13:04,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:13:04,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:13:04,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:13:04,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:13:04,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:13:04,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:13:04,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:13:04,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:13:04,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:13:04,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:13:04,312 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 [2019-11-07 04:13:04,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:13:04,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:13:04,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:13:04,665 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:13:04,666 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:13:04,667 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product26.cil.c [2019-11-07 04:13:04,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2079d07/fac0cb91cafb4cfca5b92fd6921b3461/FLAGbac509e59 [2019-11-07 04:13:05,306 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:13:05,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product26.cil.c [2019-11-07 04:13:05,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2079d07/fac0cb91cafb4cfca5b92fd6921b3461/FLAGbac509e59 [2019-11-07 04:13:05,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2079d07/fac0cb91cafb4cfca5b92fd6921b3461 [2019-11-07 04:13:05,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:13:05,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:13:05,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:05,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:13:05,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:13:05,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:05" (1/1) ... [2019-11-07 04:13:05,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472eba20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:05, skipping insertion in model container [2019-11-07 04:13:05,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:05" (1/1) ... [2019-11-07 04:13:05,653 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:13:05,783 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:13:06,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:06,610 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:13:06,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:06,843 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:13:06,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06 WrapperNode [2019-11-07 04:13:06,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:06,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:13:06,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:13:06,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:13:06,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (1/1) ... [2019-11-07 04:13:06,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (1/1) ... [2019-11-07 04:13:06,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (1/1) ... [2019-11-07 04:13:06,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (1/1) ... [2019-11-07 04:13:06,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (1/1) ... [2019-11-07 04:13:07,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (1/1) ... [2019-11-07 04:13:07,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (1/1) ... [2019-11-07 04:13:07,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:13:07,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:13:07,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:13:07,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:13:07,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:13:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:13:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:13:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:13:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:13:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:13:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:13:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:13:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:13:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:13:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:13:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:13:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:13:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:13:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:13:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:13:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:13:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:13:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:13:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:13:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:13:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:13:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:13:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:13:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:13:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:13:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:13:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:13:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:13:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-11-07 04:13:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:13:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-11-07 04:13:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:13:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:13:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:13:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:13:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:13:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:13:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:13:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:13:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:13:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:13:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:13:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:13:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:13:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:13:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:13:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:13:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:13:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:13:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:13:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:13:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:13:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:13:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:13:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:13:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:13:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:13:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:13:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:13:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:13:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:13:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:13:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:13:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:13:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:13:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:13:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:13:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:13:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:13:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:13:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:13:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:13:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:13:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:13:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:13:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:13:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:13:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:13:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:13:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:13:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:13:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:13:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:13:07,148 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:13:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:13:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:13:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:13:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:13:07,149 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-11-07 04:13:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-11-07 04:13:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:13:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:13:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:13:07,150 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:13:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:13:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:13:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:13:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:13:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:13:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:13:07,151 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:13:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:13:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:13:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:13:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:13:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:13:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:13:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:13:07,152 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:13:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:13:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:13:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:13:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:13:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:13:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:13:07,153 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:13:07,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:13:07,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:13:07,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:13:12,182 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:13:12,182 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:13:12,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:12 BoogieIcfgContainer [2019-11-07 04:13:12,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:13:12,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:13:12,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:13:12,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:13:12,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:13:05" (1/3) ... [2019-11-07 04:13:12,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5a5459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:12, skipping insertion in model container [2019-11-07 04:13:12,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:06" (2/3) ... [2019-11-07 04:13:12,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5a5459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:12, skipping insertion in model container [2019-11-07 04:13:12,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:12" (3/3) ... [2019-11-07 04:13:12,196 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product26.cil.c [2019-11-07 04:13:12,207 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:13:12,217 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:13:12,230 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:13:12,275 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:13:12,275 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:13:12,276 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:13:12,276 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:13:12,276 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:13:12,276 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:13:12,276 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:13:12,277 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:13:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states. [2019-11-07 04:13:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-07 04:13:12,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:12,347 INFO L410 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] [2019-11-07 04:13:12,349 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash 656701151, now seen corresponding path program 1 times [2019-11-07 04:13:12,366 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:12,366 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043315128] [2019-11-07 04:13:12,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:13,075 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043315128] [2019-11-07 04:13:13,076 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:13,077 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:13:13,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419728958] [2019-11-07 04:13:13,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:13:13,084 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:13,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:13:13,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:13:13,104 INFO L87 Difference]: Start difference. First operand 555 states. Second operand 2 states. [2019-11-07 04:13:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:13,175 INFO L93 Difference]: Finished difference Result 452 states and 672 transitions. [2019-11-07 04:13:13,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:13:13,177 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-11-07 04:13:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:13,199 INFO L225 Difference]: With dead ends: 452 [2019-11-07 04:13:13,200 INFO L226 Difference]: Without dead ends: 418 [2019-11-07 04:13:13,204 INFO L630 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 [2019-11-07 04:13:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-11-07 04:13:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2019-11-07 04:13:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2019-11-07 04:13:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 621 transitions. [2019-11-07 04:13:13,291 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 621 transitions. Word has length 74 [2019-11-07 04:13:13,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:13,293 INFO L462 AbstractCegarLoop]: Abstraction has 418 states and 621 transitions. [2019-11-07 04:13:13,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:13:13,294 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 621 transitions. [2019-11-07 04:13:13,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-07 04:13:13,298 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:13,299 INFO L410 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] [2019-11-07 04:13:13,299 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:13,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1065118318, now seen corresponding path program 1 times [2019-11-07 04:13:13,300 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:13,300 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032744697] [2019-11-07 04:13:13,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:13,573 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032744697] [2019-11-07 04:13:13,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:13,573 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:13:13,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832256844] [2019-11-07 04:13:13,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:13:13,576 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:13,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:13:13,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:13:13,577 INFO L87 Difference]: Start difference. First operand 418 states and 621 transitions. Second operand 6 states. [2019-11-07 04:13:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:16,718 INFO L93 Difference]: Finished difference Result 1269 states and 1951 transitions. [2019-11-07 04:13:16,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:13:16,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-11-07 04:13:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:16,730 INFO L225 Difference]: With dead ends: 1269 [2019-11-07 04:13:16,731 INFO L226 Difference]: Without dead ends: 893 [2019-11-07 04:13:16,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:13:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-11-07 04:13:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 798. [2019-11-07 04:13:16,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 798 states. [2019-11-07 04:13:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1228 transitions. [2019-11-07 04:13:16,823 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1228 transitions. Word has length 75 [2019-11-07 04:13:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:16,823 INFO L462 AbstractCegarLoop]: Abstraction has 798 states and 1228 transitions. [2019-11-07 04:13:16,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:13:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1228 transitions. [2019-11-07 04:13:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-07 04:13:16,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:16,828 INFO L410 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] [2019-11-07 04:13:16,828 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1830198667, now seen corresponding path program 1 times [2019-11-07 04:13:16,829 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:16,829 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950678757] [2019-11-07 04:13:16,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:17,027 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950678757] [2019-11-07 04:13:17,027 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:17,027 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:13:17,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858528992] [2019-11-07 04:13:17,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:13:17,029 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:17,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:13:17,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:13:17,029 INFO L87 Difference]: Start difference. First operand 798 states and 1228 transitions. Second operand 8 states. [2019-11-07 04:13:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:17,113 INFO L93 Difference]: Finished difference Result 1647 states and 2585 transitions. [2019-11-07 04:13:17,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:13:17,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-11-07 04:13:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:17,122 INFO L225 Difference]: With dead ends: 1647 [2019-11-07 04:13:17,123 INFO L226 Difference]: Without dead ends: 892 [2019-11-07 04:13:17,128 INFO L630 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 [2019-11-07 04:13:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2019-11-07 04:13:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 806. [2019-11-07 04:13:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2019-11-07 04:13:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1236 transitions. [2019-11-07 04:13:17,192 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1236 transitions. Word has length 103 [2019-11-07 04:13:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:17,192 INFO L462 AbstractCegarLoop]: Abstraction has 806 states and 1236 transitions. [2019-11-07 04:13:17,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:13:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1236 transitions. [2019-11-07 04:13:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-07 04:13:17,197 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:17,197 INFO L410 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] [2019-11-07 04:13:17,198 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:17,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:17,198 INFO L82 PathProgramCache]: Analyzing trace with hash -979744122, now seen corresponding path program 1 times [2019-11-07 04:13:17,198 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:17,199 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607123855] [2019-11-07 04:13:17,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:17,437 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607123855] [2019-11-07 04:13:17,437 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:17,438 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:13:17,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891427755] [2019-11-07 04:13:17,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:13:17,439 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:17,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:13:17,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:13:17,440 INFO L87 Difference]: Start difference. First operand 806 states and 1236 transitions. Second operand 12 states. [2019-11-07 04:13:24,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:24,489 INFO L93 Difference]: Finished difference Result 2397 states and 3696 transitions. [2019-11-07 04:13:24,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 04:13:24,490 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2019-11-07 04:13:24,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:24,520 INFO L225 Difference]: With dead ends: 2397 [2019-11-07 04:13:24,520 INFO L226 Difference]: Without dead ends: 1633 [2019-11-07 04:13:24,525 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-11-07 04:13:24,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2019-11-07 04:13:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1574. [2019-11-07 04:13:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2019-11-07 04:13:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2407 transitions. [2019-11-07 04:13:24,653 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2407 transitions. Word has length 106 [2019-11-07 04:13:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:24,654 INFO L462 AbstractCegarLoop]: Abstraction has 1574 states and 2407 transitions. [2019-11-07 04:13:24,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:13:24,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2407 transitions. [2019-11-07 04:13:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-07 04:13:24,657 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:24,658 INFO L410 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] [2019-11-07 04:13:24,658 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:24,658 INFO L82 PathProgramCache]: Analyzing trace with hash -856895825, now seen corresponding path program 1 times [2019-11-07 04:13:24,659 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:24,659 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435872651] [2019-11-07 04:13:24,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:24,861 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435872651] [2019-11-07 04:13:24,861 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:24,861 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:13:24,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899518474] [2019-11-07 04:13:24,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:13:24,863 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:24,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:13:24,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:13:24,863 INFO L87 Difference]: Start difference. First operand 1574 states and 2407 transitions. Second operand 5 states. [2019-11-07 04:13:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:25,080 INFO L93 Difference]: Finished difference Result 3128 states and 4815 transitions. [2019-11-07 04:13:25,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:13:25,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2019-11-07 04:13:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:25,092 INFO L225 Difference]: With dead ends: 3128 [2019-11-07 04:13:25,092 INFO L226 Difference]: Without dead ends: 1598 [2019-11-07 04:13:25,099 INFO L630 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 [2019-11-07 04:13:25,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2019-11-07 04:13:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1590. [2019-11-07 04:13:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2019-11-07 04:13:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2427 transitions. [2019-11-07 04:13:25,184 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2427 transitions. Word has length 107 [2019-11-07 04:13:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:25,184 INFO L462 AbstractCegarLoop]: Abstraction has 1590 states and 2427 transitions. [2019-11-07 04:13:25,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:13:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2427 transitions. [2019-11-07 04:13:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-07 04:13:25,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:25,188 INFO L410 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, 1, 1, 1] [2019-11-07 04:13:25,188 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:25,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1346215111, now seen corresponding path program 1 times [2019-11-07 04:13:25,189 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:25,189 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477683493] [2019-11-07 04:13:25,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:13:25,361 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477683493] [2019-11-07 04:13:25,361 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:25,361 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:13:25,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162569099] [2019-11-07 04:13:25,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:13:25,362 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:25,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:13:25,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:13:25,363 INFO L87 Difference]: Start difference. First operand 1590 states and 2427 transitions. Second operand 6 states. [2019-11-07 04:13:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:29,001 INFO L93 Difference]: Finished difference Result 5339 states and 8199 transitions. [2019-11-07 04:13:29,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:13:29,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2019-11-07 04:13:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:29,036 INFO L225 Difference]: With dead ends: 5339 [2019-11-07 04:13:29,037 INFO L226 Difference]: Without dead ends: 3793 [2019-11-07 04:13:29,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:13:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2019-11-07 04:13:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3759. [2019-11-07 04:13:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3759 states. [2019-11-07 04:13:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5690 transitions. [2019-11-07 04:13:29,254 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5690 transitions. Word has length 111 [2019-11-07 04:13:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:29,255 INFO L462 AbstractCegarLoop]: Abstraction has 3759 states and 5690 transitions. [2019-11-07 04:13:29,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:13:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5690 transitions. [2019-11-07 04:13:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:13:29,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:29,261 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:29,261 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:29,262 INFO L82 PathProgramCache]: Analyzing trace with hash -642163230, now seen corresponding path program 1 times [2019-11-07 04:13:29,262 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:29,262 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41226120] [2019-11-07 04:13:29,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:13:29,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41226120] [2019-11-07 04:13:29,431 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:29,431 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:29,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705845352] [2019-11-07 04:13:29,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:29,433 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:29,433 INFO L87 Difference]: Start difference. First operand 3759 states and 5690 transitions. Second operand 3 states. [2019-11-07 04:13:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:29,797 INFO L93 Difference]: Finished difference Result 9557 states and 14696 transitions. [2019-11-07 04:13:29,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:29,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-11-07 04:13:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:29,843 INFO L225 Difference]: With dead ends: 9557 [2019-11-07 04:13:29,844 INFO L226 Difference]: Without dead ends: 5840 [2019-11-07 04:13:29,865 INFO L630 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 [2019-11-07 04:13:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2019-11-07 04:13:30,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 5793. [2019-11-07 04:13:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5793 states. [2019-11-07 04:13:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8861 transitions. [2019-11-07 04:13:30,223 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8861 transitions. Word has length 119 [2019-11-07 04:13:30,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:30,229 INFO L462 AbstractCegarLoop]: Abstraction has 5793 states and 8861 transitions. [2019-11-07 04:13:30,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:30,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8861 transitions. [2019-11-07 04:13:30,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:13:30,237 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:30,238 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:30,238 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:30,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:30,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1566480303, now seen corresponding path program 1 times [2019-11-07 04:13:30,239 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:30,240 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196617241] [2019-11-07 04:13:30,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:13:30,455 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196617241] [2019-11-07 04:13:30,455 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:30,455 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:30,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077994614] [2019-11-07 04:13:30,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:30,456 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:30,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:30,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:30,457 INFO L87 Difference]: Start difference. First operand 5793 states and 8861 transitions. Second operand 3 states. [2019-11-07 04:13:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:30,794 INFO L93 Difference]: Finished difference Result 15660 states and 24495 transitions. [2019-11-07 04:13:30,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:30,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-11-07 04:13:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:30,893 INFO L225 Difference]: With dead ends: 15660 [2019-11-07 04:13:30,893 INFO L226 Difference]: Without dead ends: 9910 [2019-11-07 04:13:30,929 INFO L630 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 [2019-11-07 04:13:30,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9910 states. [2019-11-07 04:13:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9910 to 9862. [2019-11-07 04:13:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9862 states. [2019-11-07 04:13:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9862 states to 9862 states and 15350 transitions. [2019-11-07 04:13:31,650 INFO L78 Accepts]: Start accepts. Automaton has 9862 states and 15350 transitions. Word has length 120 [2019-11-07 04:13:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:31,651 INFO L462 AbstractCegarLoop]: Abstraction has 9862 states and 15350 transitions. [2019-11-07 04:13:31,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 9862 states and 15350 transitions. [2019-11-07 04:13:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:13:31,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:31,655 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:31,655 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:31,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1314956996, now seen corresponding path program 1 times [2019-11-07 04:13:31,656 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:31,656 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506981620] [2019-11-07 04:13:31,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:13:31,800 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506981620] [2019-11-07 04:13:31,801 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:31,801 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:31,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949029278] [2019-11-07 04:13:31,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:31,802 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:31,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:31,803 INFO L87 Difference]: Start difference. First operand 9862 states and 15350 transitions. Second operand 3 states. [2019-11-07 04:13:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:32,418 INFO L93 Difference]: Finished difference Result 27867 states and 44898 transitions. [2019-11-07 04:13:32,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:32,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-11-07 04:13:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:32,537 INFO L225 Difference]: With dead ends: 27867 [2019-11-07 04:13:32,538 INFO L226 Difference]: Without dead ends: 18050 [2019-11-07 04:13:32,594 INFO L630 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 [2019-11-07 04:13:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18050 states. [2019-11-07 04:13:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18050 to 18001. [2019-11-07 04:13:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18001 states. [2019-11-07 04:13:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18001 states to 18001 states and 28859 transitions. [2019-11-07 04:13:34,368 INFO L78 Accepts]: Start accepts. Automaton has 18001 states and 28859 transitions. Word has length 121 [2019-11-07 04:13:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:34,368 INFO L462 AbstractCegarLoop]: Abstraction has 18001 states and 28859 transitions. [2019-11-07 04:13:34,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18001 states and 28859 transitions. [2019-11-07 04:13:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-07 04:13:34,372 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:34,373 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:13:34,373 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:34,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2107672977, now seen corresponding path program 1 times [2019-11-07 04:13:34,374 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:34,374 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839288639] [2019-11-07 04:13:34,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:13:34,505 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839288639] [2019-11-07 04:13:34,505 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:34,506 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:34,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98107834] [2019-11-07 04:13:34,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:34,507 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:34,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:34,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:34,507 INFO L87 Difference]: Start difference. First operand 18001 states and 28859 transitions. Second operand 3 states. [2019-11-07 04:13:35,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:35,737 INFO L93 Difference]: Finished difference Result 52282 states and 88433 transitions. [2019-11-07 04:13:35,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:35,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-11-07 04:13:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted.