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_spec13_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:01:42,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:01:42,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:01:42,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:01:42,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:01:42,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:01:42,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:01:42,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:01:42,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:01:42,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:01:42,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:01:42,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:01:42,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:01:42,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:01:42,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:01:42,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:01:42,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:01:42,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:01:42,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:01:42,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:01:42,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:01:42,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:01:42,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:01:42,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:01:42,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:01:42,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:01:42,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:01:42,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:01:42,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:01:42,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:01:42,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:01:42,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:01:42,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:01:42,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:01:42,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:01:42,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:01:42,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:01:42,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:01:42,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:01:42,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:01:42,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:01:42,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:01:43,005 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:01:43,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:01:43,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:01:43,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:01:43,007 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:01:43,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:01:43,008 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:01:43,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:01:43,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:01:43,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:01:43,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:01:43,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:01:43,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:01:43,009 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:01:43,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:01:43,010 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:01:43,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:01:43,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:01:43,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:01:43,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:01:43,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:01:43,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:01:43,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:01:43,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:01:43,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:01:43,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:01:43,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:01:43,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:01:43,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:01:43,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:01:43,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:01:43,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:01:43,318 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:01:43,318 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:01:43,319 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2019-10-13 23:01:43,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d008e1d/1b86595b682d4e1f957e1376a1b2325d/FLAG94002459a [2019-10-13 23:01:43,991 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:01:43,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product22.cil.c [2019-10-13 23:01:44,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d008e1d/1b86595b682d4e1f957e1376a1b2325d/FLAG94002459a [2019-10-13 23:01:44,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30d008e1d/1b86595b682d4e1f957e1376a1b2325d [2019-10-13 23:01:44,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:01:44,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:01:44,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:01:44,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:01:44,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:01:44,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44, skipping insertion in model container [2019-10-13 23:01:44,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,259 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:01:44,341 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:01:45,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:01:45,174 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:01:45,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:01:45,380 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:01:45,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45 WrapperNode [2019-10-13 23:01:45,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:01:45,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:01:45,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:01:45,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:01:45,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (1/1) ... [2019-10-13 23:01:45,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (1/1) ... [2019-10-13 23:01:45,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (1/1) ... [2019-10-13 23:01:45,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (1/1) ... [2019-10-13 23:01:45,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (1/1) ... [2019-10-13 23:01:45,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (1/1) ... [2019-10-13 23:01:45,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (1/1) ... [2019-10-13 23:01:45,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:01:45,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:01:45,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:01:45,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:01:45,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:01:45,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:01:45,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:01:45,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:01:45,673 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:01:45,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:01:45,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:01:45,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:01:45,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:01:45,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:01:45,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:01:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:01:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:01:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:01:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:01:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:01:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:01:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:01:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:01:45,677 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:01:45,678 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:01:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:01:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:01:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:01:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:01:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:01:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:01:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:01:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:01:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:01:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:01:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:01:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:01:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:01:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:01:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:01:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:01:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:01:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 23:01:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:01:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:01:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:01:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:01:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:01:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:01:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:01:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:01:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:01:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:01:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:01:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:01:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:01:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:01:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:01:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:01:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:01:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:01:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:01:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:01:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:01:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:01:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:01:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:01:45,687 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:01:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:01:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:01:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:01:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:01:45,688 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:01:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:01:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:01:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:01:45,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:01:45,690 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:01:45,690 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:01:45,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 23:01:45,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 23:01:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:01:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:01:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:01:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:01:45,693 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:01:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:01:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:01:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:01:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:01:45,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:01:45,695 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:01:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:01:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:01:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:01:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:01:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:01:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:01:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:01:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:01:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:01:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:01:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:01:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:01:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:01:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:01:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:01:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:01:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:01:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:01:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:01:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:01:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:01:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:01:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:01:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:01:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:01:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:01:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:01:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:01:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:01:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:01:45,701 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:01:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:01:45,702 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:01:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:01:45,703 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:01:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:01:45,706 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:01:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:01:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:01:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:01:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:01:45,708 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:01:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:01:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:01:45,709 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:01:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:01:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:01:45,713 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:01:45,714 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:01:45,714 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:01:45,714 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:01:45,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 23:01:45,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 23:01:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 23:01:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:01:45,715 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:01:45,716 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:01:45,722 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:01:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:01:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:01:45,723 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:01:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:01:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:01:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:01:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:01:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:01:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:01:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:01:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:01:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:01:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:01:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:01:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:01:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:01:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:01:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:01:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:01:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:01:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:01:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:01:51,132 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:01:51,133 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:01:51,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:01:51 BoogieIcfgContainer [2019-10-13 23:01:51,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:01:51,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:01:51,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:01:51,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:01:51,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:01:44" (1/3) ... [2019-10-13 23:01:51,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@958075c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:01:51, skipping insertion in model container [2019-10-13 23:01:51,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:45" (2/3) ... [2019-10-13 23:01:51,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@958075c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:01:51, skipping insertion in model container [2019-10-13 23:01:51,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:01:51" (3/3) ... [2019-10-13 23:01:51,143 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2019-10-13 23:01:51,152 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:01:51,162 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:01:51,174 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:01:51,214 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:01:51,214 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:01:51,214 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:01:51,214 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:01:51,215 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:01:51,215 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:01:51,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:01:51,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:01:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2019-10-13 23:01:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 23:01:51,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:51,279 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:51,281 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:51,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2001599510, now seen corresponding path program 1 times [2019-10-13 23:01:51,297 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:51,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137777956] [2019-10-13 23:01:51,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:51,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:51,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:01:51,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137777956] [2019-10-13 23:01:51,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875925294] [2019-10-13 23:01:51,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:01:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:52,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:01:52,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:01:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:01:52,781 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:01:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:52,981 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:01:52,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-13 23:01:52,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303983207] [2019-10-13 23:01:52,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:01:52,989 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:53,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:01:53,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:01:53,007 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2019-10-13 23:01:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:54,567 INFO L93 Difference]: Finished difference Result 1848 states and 2867 transitions. [2019-10-13 23:01:54,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:01:54,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2019-10-13 23:01:54,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:54,611 INFO L225 Difference]: With dead ends: 1848 [2019-10-13 23:01:54,611 INFO L226 Difference]: Without dead ends: 1363 [2019-10-13 23:01:54,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:01:54,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2019-10-13 23:01:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1275. [2019-10-13 23:01:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1275 states. [2019-10-13 23:01:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1957 transitions. [2019-10-13 23:01:54,837 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1957 transitions. Word has length 95 [2019-10-13 23:01:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:54,838 INFO L462 AbstractCegarLoop]: Abstraction has 1275 states and 1957 transitions. [2019-10-13 23:01:54,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:01:54,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1957 transitions. [2019-10-13 23:01:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 23:01:54,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:54,853 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:55,061 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:01:55,062 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:55,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:55,063 INFO L82 PathProgramCache]: Analyzing trace with hash -602275500, now seen corresponding path program 1 times [2019-10-13 23:01:55,063 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:55,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742650923] [2019-10-13 23:01:55,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:55,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:55,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:55,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:55,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742650923] [2019-10-13 23:01:55,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:55,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:01:55,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345134723] [2019-10-13 23:01:55,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:01:55,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:55,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:01:55,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:01:55,592 INFO L87 Difference]: Start difference. First operand 1275 states and 1957 transitions. Second operand 9 states. [2019-10-13 23:02:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:01,630 INFO L93 Difference]: Finished difference Result 4262 states and 6656 transitions. [2019-10-13 23:02:01,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 23:02:01,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-13 23:02:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:01,662 INFO L225 Difference]: With dead ends: 4262 [2019-10-13 23:02:01,662 INFO L226 Difference]: Without dead ends: 3025 [2019-10-13 23:02:01,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:02:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2019-10-13 23:02:02,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2909. [2019-10-13 23:02:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2909 states. [2019-10-13 23:02:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4539 transitions. [2019-10-13 23:02:02,074 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4539 transitions. Word has length 137 [2019-10-13 23:02:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:02,076 INFO L462 AbstractCegarLoop]: Abstraction has 2909 states and 4539 transitions. [2019-10-13 23:02:02,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:02:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4539 transitions. [2019-10-13 23:02:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:02:02,089 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:02,090 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:02,090 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1199338657, now seen corresponding path program 1 times [2019-10-13 23:02:02,091 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:02,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678713925] [2019-10-13 23:02:02,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:02,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:02,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:02,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678713925] [2019-10-13 23:02:02,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:02,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:02:02,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493655882] [2019-10-13 23:02:02,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:02:02,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:02,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:02:02,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:02:02,459 INFO L87 Difference]: Start difference. First operand 2909 states and 4539 transitions. Second operand 10 states. [2019-10-13 23:02:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:03,833 INFO L93 Difference]: Finished difference Result 5694 states and 8909 transitions. [2019-10-13 23:02:03,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:02:03,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2019-10-13 23:02:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:03,857 INFO L225 Difference]: With dead ends: 5694 [2019-10-13 23:02:03,858 INFO L226 Difference]: Without dead ends: 2822 [2019-10-13 23:02:03,877 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:02:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2019-10-13 23:02:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2808. [2019-10-13 23:02:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2808 states. [2019-10-13 23:02:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4330 transitions. [2019-10-13 23:02:04,048 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4330 transitions. Word has length 140 [2019-10-13 23:02:04,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:04,048 INFO L462 AbstractCegarLoop]: Abstraction has 2808 states and 4330 transitions. [2019-10-13 23:02:04,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:02:04,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4330 transitions. [2019-10-13 23:02:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 23:02:04,056 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:04,056 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:04,056 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:04,057 INFO L82 PathProgramCache]: Analyzing trace with hash 641621857, now seen corresponding path program 1 times [2019-10-13 23:02:04,057 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:04,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195485047] [2019-10-13 23:02:04,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:04,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:04,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:04,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195485047] [2019-10-13 23:02:04,402 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:04,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:04,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572006755] [2019-10-13 23:02:04,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:04,404 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:04,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:04,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:04,405 INFO L87 Difference]: Start difference. First operand 2808 states and 4330 transitions. Second operand 7 states. [2019-10-13 23:02:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:04,585 INFO L93 Difference]: Finished difference Result 4576 states and 7127 transitions. [2019-10-13 23:02:04,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:02:04,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-10-13 23:02:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:04,612 INFO L225 Difference]: With dead ends: 4576 [2019-10-13 23:02:04,612 INFO L226 Difference]: Without dead ends: 2878 [2019-10-13 23:02:04,629 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2019-10-13 23:02:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2850. [2019-10-13 23:02:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2850 states. [2019-10-13 23:02:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 4390 transitions. [2019-10-13 23:02:04,798 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 4390 transitions. Word has length 141 [2019-10-13 23:02:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:04,799 INFO L462 AbstractCegarLoop]: Abstraction has 2850 states and 4390 transitions. [2019-10-13 23:02:04,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 4390 transitions. [2019-10-13 23:02:04,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 23:02:04,804 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:04,804 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:04,805 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:04,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:04,805 INFO L82 PathProgramCache]: Analyzing trace with hash 631605660, now seen corresponding path program 1 times [2019-10-13 23:02:04,806 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:04,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087444477] [2019-10-13 23:02:04,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:04,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:04,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:05,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087444477] [2019-10-13 23:02:05,033 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:05,033 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:05,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958603501] [2019-10-13 23:02:05,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:05,034 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:05,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:05,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:05,035 INFO L87 Difference]: Start difference. First operand 2850 states and 4390 transitions. Second operand 7 states. [2019-10-13 23:02:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:05,182 INFO L93 Difference]: Finished difference Result 4634 states and 7203 transitions. [2019-10-13 23:02:05,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:02:05,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-10-13 23:02:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:05,203 INFO L225 Difference]: With dead ends: 4634 [2019-10-13 23:02:05,203 INFO L226 Difference]: Without dead ends: 2908 [2019-10-13 23:02:05,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2019-10-13 23:02:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2856. [2019-10-13 23:02:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2019-10-13 23:02:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4396 transitions. [2019-10-13 23:02:05,374 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4396 transitions. Word has length 142 [2019-10-13 23:02:05,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:05,375 INFO L462 AbstractCegarLoop]: Abstraction has 2856 states and 4396 transitions. [2019-10-13 23:02:05,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:05,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4396 transitions. [2019-10-13 23:02:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 23:02:05,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:05,380 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:05,381 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:05,381 INFO L82 PathProgramCache]: Analyzing trace with hash -353337476, now seen corresponding path program 1 times [2019-10-13 23:02:05,382 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:05,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997187632] [2019-10-13 23:02:05,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:05,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:05,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:05,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997187632] [2019-10-13 23:02:05,596 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:05,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:05,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17169171] [2019-10-13 23:02:05,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:05,598 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:05,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:05,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:05,599 INFO L87 Difference]: Start difference. First operand 2856 states and 4396 transitions. Second operand 7 states. [2019-10-13 23:02:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:05,817 INFO L93 Difference]: Finished difference Result 4644 states and 7213 transitions. [2019-10-13 23:02:05,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:02:05,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-10-13 23:02:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:05,836 INFO L225 Difference]: With dead ends: 4644 [2019-10-13 23:02:05,836 INFO L226 Difference]: Without dead ends: 2914 [2019-10-13 23:02:05,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2019-10-13 23:02:05,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2862. [2019-10-13 23:02:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2862 states. [2019-10-13 23:02:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4402 transitions. [2019-10-13 23:02:05,963 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4402 transitions. Word has length 142 [2019-10-13 23:02:05,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:05,965 INFO L462 AbstractCegarLoop]: Abstraction has 2862 states and 4402 transitions. [2019-10-13 23:02:05,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4402 transitions. [2019-10-13 23:02:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 23:02:05,972 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:05,972 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:05,972 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:05,973 INFO L82 PathProgramCache]: Analyzing trace with hash -55837836, now seen corresponding path program 1 times [2019-10-13 23:02:05,973 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:05,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389075061] [2019-10-13 23:02:05,973 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:05,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:05,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:06,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389075061] [2019-10-13 23:02:06,321 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:06,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:06,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344016733] [2019-10-13 23:02:06,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:06,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:06,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:06,323 INFO L87 Difference]: Start difference. First operand 2862 states and 4402 transitions. Second operand 7 states. [2019-10-13 23:02:10,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:10,302 INFO L93 Difference]: Finished difference Result 6470 states and 10173 transitions. [2019-10-13 23:02:10,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:02:10,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2019-10-13 23:02:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:10,337 INFO L225 Difference]: With dead ends: 6470 [2019-10-13 23:02:10,337 INFO L226 Difference]: Without dead ends: 4486 [2019-10-13 23:02:10,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2019-10-13 23:02:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4286. [2019-10-13 23:02:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4286 states. [2019-10-13 23:02:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 6496 transitions. [2019-10-13 23:02:10,648 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 6496 transitions. Word has length 146 [2019-10-13 23:02:10,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:10,649 INFO L462 AbstractCegarLoop]: Abstraction has 4286 states and 6496 transitions. [2019-10-13 23:02:10,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:10,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 6496 transitions. [2019-10-13 23:02:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 23:02:10,654 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:10,655 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:10,655 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:10,656 INFO L82 PathProgramCache]: Analyzing trace with hash 819540633, now seen corresponding path program 1 times [2019-10-13 23:02:10,656 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:10,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775473432] [2019-10-13 23:02:10,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:10,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:10,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:10,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775473432] [2019-10-13 23:02:10,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:10,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:02:10,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896142903] [2019-10-13 23:02:10,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:02:10,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:10,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:02:10,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:02:10,940 INFO L87 Difference]: Start difference. First operand 4286 states and 6496 transitions. Second operand 6 states.