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_spec1_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:02,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:02,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:02,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:02,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:02,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:02,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:02,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:02,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:02,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:02,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:02,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:02,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:02,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:02,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:02,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:02,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:02,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:02,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:02,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:02,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:02,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:02,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:02,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:02,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:02,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:02,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:02,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:02,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:02,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:02,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:02,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:02,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:02,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:02,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:02,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:02,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:02,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:02,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:02,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:02,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:02,971 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 23:03:02,990 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:02,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:02,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:02,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:02,992 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:02,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:02,992 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:02,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:02,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:02,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:02,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:02,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:02,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:02,994 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:02,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:02,994 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:02,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:02,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:02,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:02,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:02,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:02,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:02,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:02,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:02,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:02,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:02,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:02,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:02,997 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 23:03:03,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:03,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:03,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:03,303 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:03,303 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:03,304 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c [2019-10-13 23:03:03,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8189b59ba/69851160099840e6ab7b863179157598/FLAG4a0b44ed4 [2019-10-13 23:03:04,002 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:04,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c [2019-10-13 23:03:04,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8189b59ba/69851160099840e6ab7b863179157598/FLAG4a0b44ed4 [2019-10-13 23:03:04,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8189b59ba/69851160099840e6ab7b863179157598 [2019-10-13 23:03:04,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:04,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:04,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:04,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:04,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:04,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:04,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b94beeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04, skipping insertion in model container [2019-10-13 23:03:04,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:04" (1/1) ... [2019-10-13 23:03:04,207 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:04,289 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:05,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:05,136 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:05,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:05,317 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:05,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05 WrapperNode [2019-10-13 23:03:05,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:05,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:05,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:05,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:05,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (1/1) ... [2019-10-13 23:03:05,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (1/1) ... [2019-10-13 23:03:05,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (1/1) ... [2019-10-13 23:03:05,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (1/1) ... [2019-10-13 23:03:05,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (1/1) ... [2019-10-13 23:03:05,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (1/1) ... [2019-10-13 23:03:05,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (1/1) ... [2019-10-13 23:03:05,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:05,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:05,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:05,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:05,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (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 23:03:05,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:05,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:05,624 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:05,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:05,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:05,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:05,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:05,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:05,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:05,625 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:05,626 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:05,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:05,626 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:05,626 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:05,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:05,627 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:05,627 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:05,627 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:05,628 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:05,628 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:05,628 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:05,628 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:05,628 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:05,629 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:05,629 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:05,629 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:05,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:05,629 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:05,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:05,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:05,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:05,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:05,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:05,630 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:05,633 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:05,633 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:05,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:05,633 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:05,633 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:05,633 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:05,634 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:05,634 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:05,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:05,634 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:05,634 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:05,635 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:05,635 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:05,635 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:05,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:05,635 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:05,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:05,636 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:05,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:05,636 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:05,636 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:05,636 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:05,637 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:05,637 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:05,637 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:05,637 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:05,638 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:03:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:03:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:03:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:03:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:03:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:10,273 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:10,273 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:10,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:10 BoogieIcfgContainer [2019-10-13 23:03:10,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:10,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:10,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:10,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:10,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:04" (1/3) ... [2019-10-13 23:03:10,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed58b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:10, skipping insertion in model container [2019-10-13 23:03:10,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05" (2/3) ... [2019-10-13 23:03:10,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed58b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:10, skipping insertion in model container [2019-10-13 23:03:10,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:10" (3/3) ... [2019-10-13 23:03:10,290 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2019-10-13 23:03:10,300 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:10,314 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:10,325 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:10,369 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:10,369 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:10,370 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:10,370 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:10,370 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:10,370 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:10,370 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:10,370 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states. [2019-10-13 23:03:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 23:03:10,431 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:10,434 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:10,438 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1952285522, now seen corresponding path program 1 times [2019-10-13 23:03:10,454 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:10,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365244998] [2019-10-13 23:03:10,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:10,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:11,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365244998] [2019-10-13 23:03:11,285 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:11,285 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:11,285 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477459040] [2019-10-13 23:03:11,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:11,291 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:11,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:11,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:11,309 INFO L87 Difference]: Start difference. First operand 550 states. Second operand 8 states. [2019-10-13 23:03:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:11,487 INFO L93 Difference]: Finished difference Result 853 states and 1312 transitions. [2019-10-13 23:03:11,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:11,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-10-13 23:03:11,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:11,522 INFO L225 Difference]: With dead ends: 853 [2019-10-13 23:03:11,522 INFO L226 Difference]: Without dead ends: 464 [2019-10-13 23:03:11,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-10-13 23:03:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 429. [2019-10-13 23:03:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-13 23:03:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 637 transitions. [2019-10-13 23:03:11,652 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 637 transitions. Word has length 115 [2019-10-13 23:03:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:11,655 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 637 transitions. [2019-10-13 23:03:11,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 637 transitions. [2019-10-13 23:03:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:03:11,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:11,663 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:11,664 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:11,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:11,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1054827528, now seen corresponding path program 1 times [2019-10-13 23:03:11,665 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:11,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350069135] [2019-10-13 23:03:11,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:11,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:11,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:12,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350069135] [2019-10-13 23:03:12,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:12,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:12,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20946332] [2019-10-13 23:03:12,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:12,053 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:12,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:12,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:12,054 INFO L87 Difference]: Start difference. First operand 429 states and 637 transitions. Second operand 7 states. [2019-10-13 23:03:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:15,788 INFO L93 Difference]: Finished difference Result 1296 states and 1994 transitions. [2019-10-13 23:03:15,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:03:15,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-13 23:03:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:15,798 INFO L225 Difference]: With dead ends: 1296 [2019-10-13 23:03:15,798 INFO L226 Difference]: Without dead ends: 920 [2019-10-13 23:03:15,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:03:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2019-10-13 23:03:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 893. [2019-10-13 23:03:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2019-10-13 23:03:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1376 transitions. [2019-10-13 23:03:15,920 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1376 transitions. Word has length 120 [2019-10-13 23:03:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:15,922 INFO L462 AbstractCegarLoop]: Abstraction has 893 states and 1376 transitions. [2019-10-13 23:03:15,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1376 transitions. [2019-10-13 23:03:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:03:15,931 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:15,932 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:15,932 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:15,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:15,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1595381557, now seen corresponding path program 1 times [2019-10-13 23:03:15,936 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:15,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431723778] [2019-10-13 23:03:15,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:15,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:16,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431723778] [2019-10-13 23:03:16,149 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:16,149 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:03:16,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822153693] [2019-10-13 23:03:16,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:03:16,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:16,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:03:16,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:16,151 INFO L87 Difference]: Start difference. First operand 893 states and 1376 transitions. Second operand 5 states. [2019-10-13 23:03:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:16,238 INFO L93 Difference]: Finished difference Result 1406 states and 2182 transitions. [2019-10-13 23:03:16,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:16,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-13 23:03:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:16,247 INFO L225 Difference]: With dead ends: 1406 [2019-10-13 23:03:16,247 INFO L226 Difference]: Without dead ends: 915 [2019-10-13 23:03:16,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2019-10-13 23:03:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 905. [2019-10-13 23:03:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2019-10-13 23:03:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1391 transitions. [2019-10-13 23:03:16,371 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1391 transitions. Word has length 124 [2019-10-13 23:03:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:16,372 INFO L462 AbstractCegarLoop]: Abstraction has 905 states and 1391 transitions. [2019-10-13 23:03:16,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:03:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1391 transitions. [2019-10-13 23:03:16,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 23:03:16,376 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:16,376 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:16,377 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:16,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1852638131, now seen corresponding path program 1 times [2019-10-13 23:03:16,377 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:16,378 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387849995] [2019-10-13 23:03:16,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,378 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:16,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387849995] [2019-10-13 23:03:16,630 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:16,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:16,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020921911] [2019-10-13 23:03:16,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:16,631 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:16,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:16,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:16,631 INFO L87 Difference]: Start difference. First operand 905 states and 1391 transitions. Second operand 8 states. [2019-10-13 23:03:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:20,020 INFO L93 Difference]: Finished difference Result 1904 states and 2936 transitions. [2019-10-13 23:03:20,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:20,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-10-13 23:03:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:20,029 INFO L225 Difference]: With dead ends: 1904 [2019-10-13 23:03:20,029 INFO L226 Difference]: Without dead ends: 1305 [2019-10-13 23:03:20,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2019-10-13 23:03:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1255. [2019-10-13 23:03:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-10-13 23:03:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1888 transitions. [2019-10-13 23:03:20,103 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1888 transitions. Word has length 128 [2019-10-13 23:03:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:20,104 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1888 transitions. [2019-10-13 23:03:20,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1888 transitions. [2019-10-13 23:03:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:03:20,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:20,108 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:20,108 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash -954095009, now seen corresponding path program 1 times [2019-10-13 23:03:20,109 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:20,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448759808] [2019-10-13 23:03:20,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:20,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448759808] [2019-10-13 23:03:20,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:20,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:20,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831466551] [2019-10-13 23:03:20,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:20,294 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:20,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:20,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:20,294 INFO L87 Difference]: Start difference. First operand 1255 states and 1888 transitions. Second operand 7 states. [2019-10-13 23:03:20,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:20,551 INFO L93 Difference]: Finished difference Result 2348 states and 3621 transitions. [2019-10-13 23:03:20,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:20,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:03:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:20,562 INFO L225 Difference]: With dead ends: 2348 [2019-10-13 23:03:20,563 INFO L226 Difference]: Without dead ends: 1255 [2019-10-13 23:03:20,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2019-10-13 23:03:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2019-10-13 23:03:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-10-13 23:03:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1856 transitions. [2019-10-13 23:03:20,632 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1856 transitions. Word has length 131 [2019-10-13 23:03:20,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:20,632 INFO L462 AbstractCegarLoop]: Abstraction has 1255 states and 1856 transitions. [2019-10-13 23:03:20,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1856 transitions. [2019-10-13 23:03:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 23:03:20,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:20,636 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:03:20,636 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:20,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1846314582, now seen corresponding path program 1 times [2019-10-13 23:03:20,637 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:20,637 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894041140] [2019-10-13 23:03:20,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:20,841 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894041140] [2019-10-13 23:03:20,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:20,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:20,844 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260517408] [2019-10-13 23:03:20,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:20,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:20,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:20,846 INFO L87 Difference]: Start difference. First operand 1255 states and 1856 transitions. Second operand 7 states. [2019-10-13 23:03:23,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:23,925 INFO L93 Difference]: Finished difference Result 2217 states and 3291 transitions. [2019-10-13 23:03:23,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:23,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-13 23:03:23,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:23,936 INFO L225 Difference]: With dead ends: 2217 [2019-10-13 23:03:23,937 INFO L226 Difference]: Without dead ends: 1325 [2019-10-13 23:03:23,941 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2019-10-13 23:03:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1282. [2019-10-13 23:03:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2019-10-13 23:03:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1890 transitions. [2019-10-13 23:03:24,015 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1890 transitions. Word has length 133 [2019-10-13 23:03:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:24,016 INFO L462 AbstractCegarLoop]: Abstraction has 1282 states and 1890 transitions. [2019-10-13 23:03:24,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1890 transitions. [2019-10-13 23:03:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:03:24,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:24,020 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:24,020 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:24,021 INFO L82 PathProgramCache]: Analyzing trace with hash -358357125, now seen corresponding path program 1 times [2019-10-13 23:03:24,021 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:24,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158011357] [2019-10-13 23:03:24,021 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:24,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:24,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:03:24,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158011357] [2019-10-13 23:03:24,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:24,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 23:03:24,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788529626] [2019-10-13 23:03:24,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 23:03:24,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:24,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 23:03:24,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-10-13 23:03:24,608 INFO L87 Difference]: Start difference. First operand 1282 states and 1890 transitions. Second operand 26 states.