/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_spec3_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:11:21,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:11:21,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:11:21,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:11:21,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:11:21,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:11:21,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:11:21,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:11:21,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:11:21,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:11:21,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:11:21,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:11:21,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:11:21,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:11:21,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:11:21,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:11:21,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:11:21,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:11:21,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:11:21,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:11:21,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:11:21,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:11:21,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:11:21,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:11:21,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:11:21,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:11:21,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:11:21,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:11:21,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:11:21,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:11:21,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:11:21,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:11:21,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:11:21,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:11:21,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:11:21,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:11:21,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:11:21,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:11:21,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:11:21,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:11:21,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:11:21,268 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 04:11:21,286 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:11:21,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:11:21,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:11:21,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:11:21,288 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:11:21,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:11:21,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:11:21,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:11:21,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:11:21,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:11:21,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:11:21,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:11:21,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:11:21,290 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:11:21,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:11:21,290 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:11:21,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:11:21,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:11:21,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:11:21,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:11:21,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:11:21,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:21,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:11:21,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:11:21,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:11:21,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:11:21,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:11:21,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:11:21,293 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 04:11:21,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:11:21,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:11:21,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:11:21,612 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:11:21,612 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:11:21,613 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product03.cil.c [2019-11-07 04:11:21,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb834040/c9d2f9ba14e447a9bd63848650491aae/FLAG65a201a9c [2019-11-07 04:11:22,291 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:11:22,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product03.cil.c [2019-11-07 04:11:22,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb834040/c9d2f9ba14e447a9bd63848650491aae/FLAG65a201a9c [2019-11-07 04:11:22,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb834040/c9d2f9ba14e447a9bd63848650491aae [2019-11-07 04:11:22,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:11:22,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:11:22,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:22,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:11:22,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:11:22,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:22" (1/1) ... [2019-11-07 04:11:22,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417d8fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:22, skipping insertion in model container [2019-11-07 04:11:22,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:22" (1/1) ... [2019-11-07 04:11:22,528 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:11:22,606 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:11:23,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:23,298 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:11:23,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:23,564 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:11:23,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23 WrapperNode [2019-11-07 04:11:23,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:23,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:11:23,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:11:23,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:11:23,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (1/1) ... [2019-11-07 04:11:23,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (1/1) ... [2019-11-07 04:11:23,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (1/1) ... [2019-11-07 04:11:23,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (1/1) ... [2019-11-07 04:11:23,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (1/1) ... [2019-11-07 04:11:23,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (1/1) ... [2019-11-07 04:11:23,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (1/1) ... [2019-11-07 04:11:23,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:11:23,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:11:23,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:11:23,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:11:23,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (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 04:11:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:11:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:11:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:23,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:23,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:23,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:23,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:11:23,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:11:23,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:11:23,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:11:23,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:11:23,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:23,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:23,851 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:11:23,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:11:23,852 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:11:23,852 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:11:23,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:11:23,852 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:11:23,853 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:11:23,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:11:23,853 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:11:23,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:11:23,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:11:23,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:11:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:11:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:11:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:11:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:11:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:11:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:11:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:11:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:11:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:11:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:11:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:11:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:11:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:11:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:11:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:11:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:11:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-11-07 04:11:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:11:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:11:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:11:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-11-07 04:11:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:11:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:11:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:11:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:11:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:11:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:11:23,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:11:23,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:11:23,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:11:23,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:11:23,862 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:11:23,863 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:11:23,863 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:11:23,863 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:11:23,864 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:11:23,864 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:11:23,864 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:11:23,864 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:11:23,864 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:11:23,864 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:11:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:11:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:11:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:11:23,865 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:11:23,866 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:11:23,866 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:11:23,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:11:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:11:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:11:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:11:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:11:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:11:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:11:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:11:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:11:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:11:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:11:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:11:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:11:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:11:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:11:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:11:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:11:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:11:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:11:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:11:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:11:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:11:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:11:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:11:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:11:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:11:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:11:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:11:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:11:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:11:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:11:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:11:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:11:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:11:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:11:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:11:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:11:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:11:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:11:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:11:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:11:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:11:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:11:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:11:23,879 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:11:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:11:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:11:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:11:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:11:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:11:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:11:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:11:23,881 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:11:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:11:23,883 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:11:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:11:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:11:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-11-07 04:11:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:11:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:11:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-11-07 04:11:23,888 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:23,888 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:11:23,888 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:11:23,889 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:11:23,895 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:11:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:11:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:11:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:11:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:11:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:11:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:11:23,897 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:11:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:11:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:11:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:11:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:11:23,898 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:11:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:11:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:11:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:11:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:11:23,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:11:23,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:11:28,915 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:11:28,915 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:11:28,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:28 BoogieIcfgContainer [2019-11-07 04:11:28,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:11:28,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:11:28,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:11:28,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:11:28,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:22" (1/3) ... [2019-11-07 04:11:28,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5889c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:28, skipping insertion in model container [2019-11-07 04:11:28,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:23" (2/3) ... [2019-11-07 04:11:28,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5889c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:28, skipping insertion in model container [2019-11-07 04:11:28,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:28" (3/3) ... [2019-11-07 04:11:28,926 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2019-11-07 04:11:28,937 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:11:28,947 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:11:28,959 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:11:28,992 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:11:28,993 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:11:28,993 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:11:28,993 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:11:28,993 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:11:28,993 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:11:28,993 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:11:28,993 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:11:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states. [2019-11-07 04:11:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:11:29,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:29,054 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:29,056 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:29,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:29,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2099438583, now seen corresponding path program 1 times [2019-11-07 04:11:29,073 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:29,073 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696910536] [2019-11-07 04:11:29,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:29,983 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696910536] [2019-11-07 04:11:29,984 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006074409] [2019-11-07 04:11:29,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:30,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:11:30,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:30,799 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:30,957 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 04:11:30,958 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:11:30,958 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:11:30,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310154110] [2019-11-07 04:11:30,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:11:30,966 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:30,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:11:30,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:30,983 INFO L87 Difference]: Start difference. First operand 581 states. Second operand 3 states. [2019-11-07 04:11:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:31,192 INFO L93 Difference]: Finished difference Result 1265 states and 1950 transitions. [2019-11-07 04:11:31,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:11:31,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-11-07 04:11:31,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:31,237 INFO L225 Difference]: With dead ends: 1265 [2019-11-07 04:11:31,237 INFO L226 Difference]: Without dead ends: 816 [2019-11-07 04:11:31,247 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2019-11-07 04:11:31,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 803. [2019-11-07 04:11:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-11-07 04:11:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1222 transitions. [2019-11-07 04:11:31,400 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1222 transitions. Word has length 118 [2019-11-07 04:11:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:31,401 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 1222 transitions. [2019-11-07 04:11:31,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:11:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1222 transitions. [2019-11-07 04:11:31,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:11:31,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:31,420 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:31,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:31,628 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:31,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1494326674, now seen corresponding path program 1 times [2019-11-07 04:11:31,629 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:31,629 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946840524] [2019-11-07 04:11:31,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:32,095 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 04:11:32,096 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946840524] [2019-11-07 04:11:32,096 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:32,096 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:11:32,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136590668] [2019-11-07 04:11:32,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:11:32,098 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:32,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:11:32,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:11:32,099 INFO L87 Difference]: Start difference. First operand 803 states and 1222 transitions. Second operand 7 states. [2019-11-07 04:11:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:35,474 INFO L93 Difference]: Finished difference Result 3066 states and 4800 transitions. [2019-11-07 04:11:35,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:11:35,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-11-07 04:11:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:35,498 INFO L225 Difference]: With dead ends: 3066 [2019-11-07 04:11:35,498 INFO L226 Difference]: Without dead ends: 2294 [2019-11-07 04:11:35,508 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:11:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2019-11-07 04:11:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2219. [2019-11-07 04:11:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2019-11-07 04:11:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3464 transitions. [2019-11-07 04:11:35,767 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3464 transitions. Word has length 119 [2019-11-07 04:11:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:35,770 INFO L462 AbstractCegarLoop]: Abstraction has 2219 states and 3464 transitions. [2019-11-07 04:11:35,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:11:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3464 transitions. [2019-11-07 04:11:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:11:35,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:35,785 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:35,786 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:35,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:35,786 INFO L82 PathProgramCache]: Analyzing trace with hash 746786505, now seen corresponding path program 1 times [2019-11-07 04:11:35,787 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:35,787 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30228439] [2019-11-07 04:11:35,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:36,169 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30228439] [2019-11-07 04:11:36,170 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366780230] [2019-11-07 04:11:36,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:37,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:11:37,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:11:37,077 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:37,308 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-11-07 04:11:37,348 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 04:11:37,349 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:11:37,349 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-11-07 04:11:37,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355262413] [2019-11-07 04:11:37,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:11:37,351 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:37,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:11:37,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:37,352 INFO L87 Difference]: Start difference. First operand 2219 states and 3464 transitions. Second operand 4 states. [2019-11-07 04:11:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:37,531 INFO L93 Difference]: Finished difference Result 4254 states and 6711 transitions. [2019-11-07 04:11:37,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:11:37,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-11-07 04:11:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:37,550 INFO L225 Difference]: With dead ends: 4254 [2019-11-07 04:11:37,551 INFO L226 Difference]: Without dead ends: 2066 [2019-11-07 04:11:37,566 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:37,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2019-11-07 04:11:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 2016. [2019-11-07 04:11:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2016 states. [2019-11-07 04:11:37,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3115 transitions. [2019-11-07 04:11:37,674 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3115 transitions. Word has length 121 [2019-11-07 04:11:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:37,675 INFO L462 AbstractCegarLoop]: Abstraction has 2016 states and 3115 transitions. [2019-11-07 04:11:37,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:11:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3115 transitions. [2019-11-07 04:11:37,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:11:37,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:37,679 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:37,891 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:37,892 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:37,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1903198849, now seen corresponding path program 1 times [2019-11-07 04:11:37,893 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:37,894 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221832586] [2019-11-07 04:11:37,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:38,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221832586] [2019-11-07 04:11:38,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033294681] [2019-11-07 04:11:38,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:38,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:11:38,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:38,867 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:38,990 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 04:11:38,991 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:11:38,991 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:11:38,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747826002] [2019-11-07 04:11:38,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:11:38,993 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:11:38,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:38,994 INFO L87 Difference]: Start difference. First operand 2016 states and 3115 transitions. Second operand 3 states. [2019-11-07 04:11:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:39,176 INFO L93 Difference]: Finished difference Result 5044 states and 7944 transitions. [2019-11-07 04:11:39,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:11:39,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-11-07 04:11:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:39,205 INFO L225 Difference]: With dead ends: 5044 [2019-11-07 04:11:39,206 INFO L226 Difference]: Without dead ends: 3059 [2019-11-07 04:11:39,221 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:11:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2019-11-07 04:11:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2974. [2019-11-07 04:11:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2974 states. [2019-11-07 04:11:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4625 transitions. [2019-11-07 04:11:39,442 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4625 transitions. Word has length 119 [2019-11-07 04:11:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:39,445 INFO L462 AbstractCegarLoop]: Abstraction has 2974 states and 4625 transitions. [2019-11-07 04:11:39,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:11:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4625 transitions. [2019-11-07 04:11:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:11:39,453 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:39,454 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:39,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:39,663 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:39,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:39,663 INFO L82 PathProgramCache]: Analyzing trace with hash -104889300, now seen corresponding path program 1 times [2019-11-07 04:11:39,665 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:39,665 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552215000] [2019-11-07 04:11:39,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:11:39,875 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552215000] [2019-11-07 04:11:39,875 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748742620] [2019-11-07 04:11:39,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:40,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:11:40,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:11:40,660 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:40,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:11:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:11:40,976 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:11:40,976 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-11-07 04:11:40,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595884313] [2019-11-07 04:11:40,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:11:40,977 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:40,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:11:40,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:11:40,978 INFO L87 Difference]: Start difference. First operand 2974 states and 4625 transitions. Second operand 6 states. [2019-11-07 04:11:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:42,182 INFO L93 Difference]: Finished difference Result 7797 states and 12341 transitions. [2019-11-07 04:11:42,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:11:42,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-11-07 04:11:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:42,232 INFO L225 Difference]: With dead ends: 7797 [2019-11-07 04:11:42,233 INFO L226 Difference]: Without dead ends: 4854 [2019-11-07 04:11:42,258 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:11:42,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4854 states. [2019-11-07 04:11:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4854 to 4818. [2019-11-07 04:11:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4818 states. [2019-11-07 04:11:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7367 transitions. [2019-11-07 04:11:42,625 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7367 transitions. Word has length 120 [2019-11-07 04:11:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:42,627 INFO L462 AbstractCegarLoop]: Abstraction has 4818 states and 7367 transitions. [2019-11-07 04:11:42,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:11:42,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7367 transitions. [2019-11-07 04:11:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 04:11:42,633 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:42,633 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 04:11:42,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:42,842 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1646523800, now seen corresponding path program 1 times [2019-11-07 04:11:42,842 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:42,842 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692195952] [2019-11-07 04:11:42,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:11:43,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692195952] [2019-11-07 04:11:43,043 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:11:43,044 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:11:43,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075416597] [2019-11-07 04:11:43,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:11:43,045 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:43,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:11:43,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:11:43,045 INFO L87 Difference]: Start difference. First operand 4818 states and 7367 transitions. Second operand 10 states. [2019-11-07 04:11:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:46,599 INFO L93 Difference]: Finished difference Result 17022 states and 26706 transitions. [2019-11-07 04:11:46,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:11:46,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-11-07 04:11:46,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:46,710 INFO L225 Difference]: With dead ends: 17022 [2019-11-07 04:11:46,710 INFO L226 Difference]: Without dead ends: 12235 [2019-11-07 04:11:46,748 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:11:46,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12235 states. [2019-11-07 04:11:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12235 to 12080. [2019-11-07 04:11:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12080 states. [2019-11-07 04:11:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12080 states to 12080 states and 18752 transitions. [2019-11-07 04:11:47,438 INFO L78 Accepts]: Start accepts. Automaton has 12080 states and 18752 transitions. Word has length 125 [2019-11-07 04:11:47,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:47,441 INFO L462 AbstractCegarLoop]: Abstraction has 12080 states and 18752 transitions. [2019-11-07 04:11:47,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:11:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12080 states and 18752 transitions. [2019-11-07 04:11:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:11:47,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:47,446 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:11:47,446 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1902884276, now seen corresponding path program 1 times [2019-11-07 04:11:47,447 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:47,447 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778269729] [2019-11-07 04:11:47,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:11:47,751 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778269729] [2019-11-07 04:11:47,752 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132760796] [2019-11-07 04:11:47,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:11:49,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 3026 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-07 04:11:49,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:11:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 04:11:49,317 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:11:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:11:49,543 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:11:49,544 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-11-07 04:11:49,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212546096] [2019-11-07 04:11:49,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:11:49,545 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:11:49,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:11:49,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:11:49,545 INFO L87 Difference]: Start difference. First operand 12080 states and 18752 transitions. Second operand 7 states. [2019-11-07 04:11:51,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:11:51,819 INFO L93 Difference]: Finished difference Result 25422 states and 39436 transitions. [2019-11-07 04:11:51,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:11:51,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-11-07 04:11:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:11:51,895 INFO L225 Difference]: With dead ends: 25422 [2019-11-07 04:11:51,895 INFO L226 Difference]: Without dead ends: 13373 [2019-11-07 04:11:51,933 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:11:51,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states. [2019-11-07 04:11:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13373 to 13326. [2019-11-07 04:11:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13326 states. [2019-11-07 04:11:52,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13326 states to 13326 states and 20435 transitions. [2019-11-07 04:11:52,528 INFO L78 Accepts]: Start accepts. Automaton has 13326 states and 20435 transitions. Word has length 131 [2019-11-07 04:11:52,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:11:52,531 INFO L462 AbstractCegarLoop]: Abstraction has 13326 states and 20435 transitions. [2019-11-07 04:11:52,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:11:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 13326 states and 20435 transitions. [2019-11-07 04:11:52,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 04:11:52,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:11:52,535 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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 04:11:52,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:11:52,745 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:11:52,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:11:52,746 INFO L82 PathProgramCache]: Analyzing trace with hash 724432837, now seen corresponding path program 1 times [2019-11-07 04:11:52,746 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:11:52,746 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221903114] [2019-11-07 04:11:52,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:11:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat