/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:09:27,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:09:27,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:09:27,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:09:27,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:09:27,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:09:27,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:09:27,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:09:27,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:09:27,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:09:27,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:09:27,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:09:27,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:09:27,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:09:27,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:09:27,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:09:27,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:09:27,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:09:27,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:09:27,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:09:27,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:09:27,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:09:27,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:09:27,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:09:27,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:09:27,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:09:27,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:09:27,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:09:27,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:09:27,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:09:27,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:09:27,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:09:27,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:09:27,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:09:27,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:09:27,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:09:27,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:09:27,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:09:27,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:09:27,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:09:27,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:09:27,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:09:27,643 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:09:27,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:09:27,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:09:27,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:09:27,647 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:09:27,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:09:27,648 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:09:27,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:09:27,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:09:27,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:09:27,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:09:27,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:09:27,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:09:27,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:09:27,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:09:27,652 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:09:27,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:09:27,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:09:27,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:09:27,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:09:27,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:09:27,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:09:27,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:09:27,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:09:27,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:09:27,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:09:27,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:09:27,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:09:27,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:09:27,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:09:27,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:09:27,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:09:27,940 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:09:27,941 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:09:27,942 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-11-07 04:09:28,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97bdb36b/31722373caac488ab474c79ab3eaa03c/FLAGff1678645 [2019-11-07 04:09:28,684 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:09:28,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-11-07 04:09:28,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97bdb36b/31722373caac488ab474c79ab3eaa03c/FLAGff1678645 [2019-11-07 04:09:28,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97bdb36b/31722373caac488ab474c79ab3eaa03c [2019-11-07 04:09:28,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:09:28,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:09:28,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:28,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:09:28,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:09:28,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:28" (1/1) ... [2019-11-07 04:09:28,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c011c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:28, skipping insertion in model container [2019-11-07 04:09:28,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:28" (1/1) ... [2019-11-07 04:09:28,999 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:09:29,117 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:09:29,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:09:29,830 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:09:29,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:09:30,051 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:09:30,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30 WrapperNode [2019-11-07 04:09:30,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:30,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:09:30,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:09:30,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:09:30,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (1/1) ... [2019-11-07 04:09:30,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (1/1) ... [2019-11-07 04:09:30,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (1/1) ... [2019-11-07 04:09:30,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (1/1) ... [2019-11-07 04:09:30,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (1/1) ... [2019-11-07 04:09:30,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (1/1) ... [2019-11-07 04:09:30,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (1/1) ... [2019-11-07 04:09:30,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:09:30,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:09:30,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:09:30,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:09:30,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:09:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:09:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:09:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:09:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:09:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:09:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:09:30,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:09:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:09:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:09:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:09:30,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:09:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:09:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:09:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:09:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:09:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:09:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:09:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:09:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:09:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:09:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:09:30,357 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:09:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:09:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:09:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:09:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:09:30,358 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:09:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:09:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:09:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:09:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:09:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:09:30,359 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:09:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:09:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:09:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:09:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:09:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:09:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:09:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:09:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:09:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:09:30,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:09:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:09:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:09:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:09:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:09:30,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:09:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:09:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:09:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:09:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:09:30,363 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:09:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:09:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:09:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:09:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:09:30,364 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:09:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:09:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:09:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:09:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:09:30,365 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:09:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:09:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:09:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:09:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:09:30,366 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:09:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:09:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:09:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-07 04:09:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:09:30,367 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-07 04:09:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:09:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:09:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:09:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:09:30,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:09:30,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:09:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:09:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:09:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:09:30,369 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:09:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:09:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:09:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:09:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:09:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:09:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:09:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:09:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:09:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:09:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:09:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:09:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:09:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:09:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:09:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:09:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:09:30,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:09:30,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:09:30,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:09:30,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:09:30,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:09:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:09:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:09:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:09:30,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:09:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:09:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:09:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:09:30,375 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:09:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:09:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:09:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:09:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:09:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:09:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:09:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:09:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:09:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:09:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:09:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:09:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:09:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:09:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:09:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:09:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:09:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:09:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:09:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:09:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:09:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:09:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:09:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:09:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:09:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:09:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:09:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:09:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:09:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:09:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:09:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:09:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:09:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:09:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:09:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:09:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:09:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:09:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:09:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:09:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:09:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:09:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:09:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:09:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:09:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:09:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:09:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:09:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:09:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:09:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:09:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:09:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:09:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:09:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:09:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-07 04:09:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:09:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-07 04:09:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:09:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:09:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:09:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:09:35,619 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:09:35,620 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:09:35,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:35 BoogieIcfgContainer [2019-11-07 04:09:35,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:09:35,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:09:35,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:09:35,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:09:35,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:09:28" (1/3) ... [2019-11-07 04:09:35,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5c703c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:35, skipping insertion in model container [2019-11-07 04:09:35,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:30" (2/3) ... [2019-11-07 04:09:35,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5c703c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:35, skipping insertion in model container [2019-11-07 04:09:35,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:35" (3/3) ... [2019-11-07 04:09:35,630 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2019-11-07 04:09:35,640 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:09:35,650 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:09:35,661 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:09:35,693 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:09:35,693 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:09:35,693 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:09:35,693 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:09:35,693 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:09:35,693 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:09:35,694 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:09:35,694 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:09:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2019-11-07 04:09:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 04:09:35,741 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:35,742 INFO L410 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] [2019-11-07 04:09:35,744 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:35,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1200228914, now seen corresponding path program 1 times [2019-11-07 04:09:35,761 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:35,761 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650434061] [2019-11-07 04:09:35,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:09:36,415 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650434061] [2019-11-07 04:09:36,416 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:36,420 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:09:36,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530048529] [2019-11-07 04:09:36,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:09:36,430 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:36,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:09:36,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:09:36,448 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 2 states. [2019-11-07 04:09:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:36,521 INFO L93 Difference]: Finished difference Result 493 states and 729 transitions. [2019-11-07 04:09:36,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:09:36,522 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 97 [2019-11-07 04:09:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:36,549 INFO L225 Difference]: With dead ends: 493 [2019-11-07 04:09:36,549 INFO L226 Difference]: Without dead ends: 459 [2019-11-07 04:09:36,556 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:09:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2019-11-07 04:09:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2019-11-07 04:09:36,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-11-07 04:09:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 678 transitions. [2019-11-07 04:09:36,724 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 678 transitions. Word has length 97 [2019-11-07 04:09:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:36,728 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 678 transitions. [2019-11-07 04:09:36,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:09:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 678 transitions. [2019-11-07 04:09:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 04:09:36,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:36,743 INFO L410 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] [2019-11-07 04:09:36,743 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:36,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1372761545, now seen corresponding path program 1 times [2019-11-07 04:09:36,744 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:36,744 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396778439] [2019-11-07 04:09:36,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:09:37,226 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396778439] [2019-11-07 04:09:37,226 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:37,226 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:09:37,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5811560] [2019-11-07 04:09:37,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:09:37,229 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:37,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:09:37,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:09:37,230 INFO L87 Difference]: Start difference. First operand 459 states and 678 transitions. Second operand 9 states. [2019-11-07 04:09:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:43,505 INFO L93 Difference]: Finished difference Result 1238 states and 1874 transitions. [2019-11-07 04:09:43,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:09:43,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-11-07 04:09:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:43,515 INFO L225 Difference]: With dead ends: 1238 [2019-11-07 04:09:43,516 INFO L226 Difference]: Without dead ends: 832 [2019-11-07 04:09:43,523 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:09:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2019-11-07 04:09:43,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 801. [2019-11-07 04:09:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2019-11-07 04:09:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1172 transitions. [2019-11-07 04:09:43,591 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1172 transitions. Word has length 98 [2019-11-07 04:09:43,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:43,592 INFO L462 AbstractCegarLoop]: Abstraction has 801 states and 1172 transitions. [2019-11-07 04:09:43,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:09:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1172 transitions. [2019-11-07 04:09:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 04:09:43,594 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:43,594 INFO L410 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] [2019-11-07 04:09:43,595 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:43,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:43,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1341462773, now seen corresponding path program 1 times [2019-11-07 04:09:43,595 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:43,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894819841] [2019-11-07 04:09:43,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:09:43,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894819841] [2019-11-07 04:09:43,856 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:43,856 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:09:43,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443183694] [2019-11-07 04:09:43,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:09:43,858 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:43,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:09:43,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:09:43,859 INFO L87 Difference]: Start difference. First operand 801 states and 1172 transitions. Second operand 3 states. [2019-11-07 04:09:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:43,977 INFO L93 Difference]: Finished difference Result 2289 states and 3399 transitions. [2019-11-07 04:09:43,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:09:43,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-11-07 04:09:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:43,994 INFO L225 Difference]: With dead ends: 2289 [2019-11-07 04:09:43,995 INFO L226 Difference]: Without dead ends: 1543 [2019-11-07 04:09:44,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:09:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2019-11-07 04:09:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1536. [2019-11-07 04:09:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1536 states. [2019-11-07 04:09:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2272 transitions. [2019-11-07 04:09:44,124 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2272 transitions. Word has length 100 [2019-11-07 04:09:44,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:44,126 INFO L462 AbstractCegarLoop]: Abstraction has 1536 states and 2272 transitions. [2019-11-07 04:09:44,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:09:44,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2272 transitions. [2019-11-07 04:09:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-07 04:09:44,136 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:44,136 INFO L410 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] [2019-11-07 04:09:44,136 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:44,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1364638279, now seen corresponding path program 1 times [2019-11-07 04:09:44,137 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:44,137 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004965831] [2019-11-07 04:09:44,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:09:44,515 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004965831] [2019-11-07 04:09:44,515 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:44,515 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:09:44,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035386562] [2019-11-07 04:09:44,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:09:44,516 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:44,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:09:44,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:09:44,517 INFO L87 Difference]: Start difference. First operand 1536 states and 2272 transitions. Second operand 6 states. [2019-11-07 04:09:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:48,187 INFO L93 Difference]: Finished difference Result 4869 states and 7365 transitions. [2019-11-07 04:09:48,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:09:48,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-11-07 04:09:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:48,215 INFO L225 Difference]: With dead ends: 4869 [2019-11-07 04:09:48,215 INFO L226 Difference]: Without dead ends: 3389 [2019-11-07 04:09:48,223 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:09:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2019-11-07 04:09:48,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3070. [2019-11-07 04:09:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3070 states. [2019-11-07 04:09:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 4643 transitions. [2019-11-07 04:09:48,419 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 4643 transitions. Word has length 101 [2019-11-07 04:09:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:48,419 INFO L462 AbstractCegarLoop]: Abstraction has 3070 states and 4643 transitions. [2019-11-07 04:09:48,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:09:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 4643 transitions. [2019-11-07 04:09:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-07 04:09:48,427 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:48,427 INFO L410 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, 1, 1, 1, 1, 1, 1] [2019-11-07 04:09:48,428 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:48,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:48,428 INFO L82 PathProgramCache]: Analyzing trace with hash -744602622, now seen corresponding path program 1 times [2019-11-07 04:09:48,428 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:48,429 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444563415] [2019-11-07 04:09:48,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:09:48,810 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444563415] [2019-11-07 04:09:48,810 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:48,811 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:09:48,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288534232] [2019-11-07 04:09:48,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:09:48,813 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:48,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:09:48,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:09:48,815 INFO L87 Difference]: Start difference. First operand 3070 states and 4643 transitions. Second operand 12 states. [2019-11-07 04:09:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:56,375 INFO L93 Difference]: Finished difference Result 9200 states and 13920 transitions. [2019-11-07 04:09:56,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 04:09:56,375 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2019-11-07 04:09:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:56,420 INFO L225 Difference]: With dead ends: 9200 [2019-11-07 04:09:56,420 INFO L226 Difference]: Without dead ends: 6185 [2019-11-07 04:09:56,439 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-11-07 04:09:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6185 states. [2019-11-07 04:09:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6185 to 6083. [2019-11-07 04:09:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6083 states. [2019-11-07 04:09:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 9110 transitions. [2019-11-07 04:09:56,778 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 9110 transitions. Word has length 139 [2019-11-07 04:09:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:56,779 INFO L462 AbstractCegarLoop]: Abstraction has 6083 states and 9110 transitions. [2019-11-07 04:09:56,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:09:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 9110 transitions. [2019-11-07 04:09:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:09:56,783 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:56,784 INFO L410 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:09:56,786 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:56,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1173946682, now seen corresponding path program 1 times [2019-11-07 04:09:56,787 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:56,789 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692400452] [2019-11-07 04:09:56,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:09:57,030 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692400452] [2019-11-07 04:09:57,032 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:57,032 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:09:57,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754958133] [2019-11-07 04:09:57,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:09:57,033 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:57,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:09:57,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:09:57,038 INFO L87 Difference]: Start difference. First operand 6083 states and 9110 transitions. Second operand 9 states. [2019-11-07 04:10:02,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:02,184 INFO L93 Difference]: Finished difference Result 15437 states and 23114 transitions. [2019-11-07 04:10:02,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 04:10:02,185 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2019-11-07 04:10:02,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:02,266 INFO L225 Difference]: With dead ends: 15437 [2019-11-07 04:10:02,266 INFO L226 Difference]: Without dead ends: 9413 [2019-11-07 04:10:02,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-11-07 04:10:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states. [2019-11-07 04:10:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9413 to 9062. [2019-11-07 04:10:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9062 states. [2019-11-07 04:10:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9062 states to 9062 states and 13563 transitions. [2019-11-07 04:10:02,849 INFO L78 Accepts]: Start accepts. Automaton has 9062 states and 13563 transitions. Word has length 140 [2019-11-07 04:10:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:02,850 INFO L462 AbstractCegarLoop]: Abstraction has 9062 states and 13563 transitions. [2019-11-07 04:10:02,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:10:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 9062 states and 13563 transitions. [2019-11-07 04:10:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-07 04:10:02,854 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:02,855 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:02,855 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:02,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:02,855 INFO L82 PathProgramCache]: Analyzing trace with hash 398780685, now seen corresponding path program 1 times [2019-11-07 04:10:02,856 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:02,856 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579596051] [2019-11-07 04:10:02,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:10:03,073 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579596051] [2019-11-07 04:10:03,074 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:03,074 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:10:03,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655346269] [2019-11-07 04:10:03,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:03,075 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:03,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:03,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:10:03,076 INFO L87 Difference]: Start difference. First operand 9062 states and 13563 transitions. Second operand 7 states. [2019-11-07 04:10:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:03,568 INFO L93 Difference]: Finished difference Result 17046 states and 25658 transitions. [2019-11-07 04:10:03,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:10:03,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-11-07 04:10:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:03,645 INFO L225 Difference]: With dead ends: 17046 [2019-11-07 04:10:03,645 INFO L226 Difference]: Without dead ends: 9362 [2019-11-07 04:10:03,678 INFO L630 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 [2019-11-07 04:10:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9362 states.