/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_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:08:12,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:08:12,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:08:12,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:08:12,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:08:12,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:08:12,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:08:12,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:08:12,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:08:12,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:08:12,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:08:12,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:08:12,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:08:12,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:08:12,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:08:12,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:08:12,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:08:12,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:08:12,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:08:12,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:08:12,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:08:12,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:08:12,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:08:12,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:08:12,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:08:12,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:08:12,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:08:12,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:08:12,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:08:12,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:08:12,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:08:12,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:08:12,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:08:12,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:08:12,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:08:12,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:08:12,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:08:12,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:08:12,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:08:12,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:08:12,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:08:12,789 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 04:08:12,809 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:08:12,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:08:12,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:08:12,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:08:12,811 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:08:12,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:08:12,812 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:08:12,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:08:12,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:08:12,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:08:12,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:08:12,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:08:12,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:08:12,813 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:08:12,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:08:12,814 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:08:12,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:08:12,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:08:12,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:08:12,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:08:12,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:08:12,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:08:12,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:08:12,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:08:12,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:08:12,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:08:12,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:08:12,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:08:12,818 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 04:08:13,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:08:13,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:08:13,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:08:13,114 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:08:13,114 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:08:13,115 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c [2019-11-07 04:08:13,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5246a349/85cd5856c614401f827bc5cece1614f3/FLAG76bab1a15 [2019-11-07 04:08:13,748 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:08:13,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product01.cil.c [2019-11-07 04:08:13,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5246a349/85cd5856c614401f827bc5cece1614f3/FLAG76bab1a15 [2019-11-07 04:08:14,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5246a349/85cd5856c614401f827bc5cece1614f3 [2019-11-07 04:08:14,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:08:14,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:08:14,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:14,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:08:14,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:08:14,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e63c10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:14, skipping insertion in model container [2019-11-07 04:08:14,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:14" (1/1) ... [2019-11-07 04:08:14,031 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:08:14,115 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:08:14,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:14,884 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:08:15,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:15,112 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:08:15,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15 WrapperNode [2019-11-07 04:08:15,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:15,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:08:15,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:08:15,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:08:15,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:08:15,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:08:15,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:08:15,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:08:15,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (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 04:08:15,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:08:15,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:08:15,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:15,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:08:15,390 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:08:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:08:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:08:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:08:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:08:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:08:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:08:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:08:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:08:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:08:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:08:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:08:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:08:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:08:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:08:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:08:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:08:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:08:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:08:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:08:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:08:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:08:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:08:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:08:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:08:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:08:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:08:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:08:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:08:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:08:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:08:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:08:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:08:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:08:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:08:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:08:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:08:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:08:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:08:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:08:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:08:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:08:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:08:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:08:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:08:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:08:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:08:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:08:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:08:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:08:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:08:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:08:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:08:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:08:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:08:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:08:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:08:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:08:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:08:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:08:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:08:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:08:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:08:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:08:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:08:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:08:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:08:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:08:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:08:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:08:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:08:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:08:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:08:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:08:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:08:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:08:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:08:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:08:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:08:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:08:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:08:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:08:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:08:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:08:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:08:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:08:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:08:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:08:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:08:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:08:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:08:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:08:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:08:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:08:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:08:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:08:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:08:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:08:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:08:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:08:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:08:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:08:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:08:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:08:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:08:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:08:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:08:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:08:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:08:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:08:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:08:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:08:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:08:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:08:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:08:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:08:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:08:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:08:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:08:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:08:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:08:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:08:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:08:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:08:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:08:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:08:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:08:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:08:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:08:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:08:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:08:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:08:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:08:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:08:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:08:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:08:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:08:20,516 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:08:20,516 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:08:20,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:20 BoogieIcfgContainer [2019-11-07 04:08:20,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:08:20,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:08:20,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:08:20,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:08:20,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:08:14" (1/3) ... [2019-11-07 04:08:20,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e69c83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:20, skipping insertion in model container [2019-11-07 04:08:20,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15" (2/3) ... [2019-11-07 04:08:20,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e69c83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:20, skipping insertion in model container [2019-11-07 04:08:20,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:20" (3/3) ... [2019-11-07 04:08:20,529 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2019-11-07 04:08:20,539 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:08:20,550 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:08:20,562 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:08:20,601 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:08:20,601 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:08:20,601 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:08:20,601 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:08:20,601 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:08:20,601 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:08:20,601 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:08:20,601 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:08:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states. [2019-11-07 04:08:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-07 04:08:20,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:20,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:08:20,659 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:20,665 INFO L82 PathProgramCache]: Analyzing trace with hash -40033435, now seen corresponding path program 1 times [2019-11-07 04:08:20,675 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:20,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150598114] [2019-11-07 04:08:20,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:21,478 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 04:08:21,479 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150598114] [2019-11-07 04:08:21,480 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:21,480 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:08:21,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071048448] [2019-11-07 04:08:21,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:08:21,488 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:21,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:08:21,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:08:21,509 INFO L87 Difference]: Start difference. First operand 531 states. Second operand 8 states. [2019-11-07 04:08:21,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:21,735 INFO L93 Difference]: Finished difference Result 815 states and 1272 transitions. [2019-11-07 04:08:21,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:08:21,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-11-07 04:08:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:21,764 INFO L225 Difference]: With dead ends: 815 [2019-11-07 04:08:21,764 INFO L226 Difference]: Without dead ends: 445 [2019-11-07 04:08:21,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:08:21,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-11-07 04:08:21,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 410. [2019-11-07 04:08:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2019-11-07 04:08:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 617 transitions. [2019-11-07 04:08:21,874 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 617 transitions. Word has length 115 [2019-11-07 04:08:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:21,875 INFO L462 AbstractCegarLoop]: Abstraction has 410 states and 617 transitions. [2019-11-07 04:08:21,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:08:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 617 transitions. [2019-11-07 04:08:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:08:21,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:21,882 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, 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 04:08:21,883 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:21,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:21,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1153139607, now seen corresponding path program 1 times [2019-11-07 04:08:21,883 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:21,884 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004484065] [2019-11-07 04:08:21,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:22,141 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 04:08:22,141 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004484065] [2019-11-07 04:08:22,142 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:22,142 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:22,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877627697] [2019-11-07 04:08:22,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:22,145 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:22,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:22,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:22,146 INFO L87 Difference]: Start difference. First operand 410 states and 617 transitions. Second operand 7 states. [2019-11-07 04:08:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:26,003 INFO L93 Difference]: Finished difference Result 1239 states and 1934 transitions. [2019-11-07 04:08:26,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 04:08:26,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-11-07 04:08:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:26,014 INFO L225 Difference]: With dead ends: 1239 [2019-11-07 04:08:26,014 INFO L226 Difference]: Without dead ends: 882 [2019-11-07 04:08:26,017 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-11-07 04:08:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-11-07 04:08:26,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 855. [2019-11-07 04:08:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2019-11-07 04:08:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1336 transitions. [2019-11-07 04:08:26,138 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1336 transitions. Word has length 120 [2019-11-07 04:08:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:26,138 INFO L462 AbstractCegarLoop]: Abstraction has 855 states and 1336 transitions. [2019-11-07 04:08:26,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:26,139 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1336 transitions. [2019-11-07 04:08:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-07 04:08:26,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:26,143 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, 1, 1, 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 04:08:26,143 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:26,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:26,144 INFO L82 PathProgramCache]: Analyzing trace with hash -93620798, now seen corresponding path program 1 times [2019-11-07 04:08:26,144 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:26,144 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825484176] [2019-11-07 04:08:26,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:26,435 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 04:08:26,435 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825484176] [2019-11-07 04:08:26,435 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:26,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:08:26,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861976867] [2019-11-07 04:08:26,441 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:08:26,442 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:08:26,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:08:26,442 INFO L87 Difference]: Start difference. First operand 855 states and 1336 transitions. Second operand 5 states. [2019-11-07 04:08:26,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:26,519 INFO L93 Difference]: Finished difference Result 1349 states and 2122 transitions. [2019-11-07 04:08:26,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:08:26,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-11-07 04:08:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:26,530 INFO L225 Difference]: With dead ends: 1349 [2019-11-07 04:08:26,530 INFO L226 Difference]: Without dead ends: 877 [2019-11-07 04:08:26,533 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:08:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2019-11-07 04:08:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 867. [2019-11-07 04:08:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2019-11-07 04:08:26,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1351 transitions. [2019-11-07 04:08:26,615 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1351 transitions. Word has length 124 [2019-11-07 04:08:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:26,615 INFO L462 AbstractCegarLoop]: Abstraction has 867 states and 1351 transitions. [2019-11-07 04:08:26,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:08:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1351 transitions. [2019-11-07 04:08:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 04:08:26,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:26,620 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, 1, 1, 1, 1, 1, 1, 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 04:08:26,620 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1097035034, now seen corresponding path program 1 times [2019-11-07 04:08:26,621 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:26,621 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395408599] [2019-11-07 04:08:26,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:26,905 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 04:08:26,906 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395408599] [2019-11-07 04:08:26,906 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:26,906 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:08:26,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066069827] [2019-11-07 04:08:26,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:08:26,908 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:08:26,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:08:26,909 INFO L87 Difference]: Start difference. First operand 867 states and 1351 transitions. Second operand 8 states. [2019-11-07 04:08:30,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:30,395 INFO L93 Difference]: Finished difference Result 1828 states and 2856 transitions. [2019-11-07 04:08:30,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:08:30,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-11-07 04:08:30,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:30,408 INFO L225 Difference]: With dead ends: 1828 [2019-11-07 04:08:30,408 INFO L226 Difference]: Without dead ends: 1248 [2019-11-07 04:08:30,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:08:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2019-11-07 04:08:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1198. [2019-11-07 04:08:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-11-07 04:08:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1828 transitions. [2019-11-07 04:08:30,497 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1828 transitions. Word has length 128 [2019-11-07 04:08:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:30,497 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1828 transitions. [2019-11-07 04:08:30,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:08:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1828 transitions. [2019-11-07 04:08:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:08:30,502 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:30,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:30,503 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:30,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:30,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1289851637, now seen corresponding path program 1 times [2019-11-07 04:08:30,504 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:30,504 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466498217] [2019-11-07 04:08:30,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:30,701 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 04:08:30,702 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466498217] [2019-11-07 04:08:30,702 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:30,703 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:30,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540000172] [2019-11-07 04:08:30,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:30,704 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:30,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:30,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:30,705 INFO L87 Difference]: Start difference. First operand 1198 states and 1828 transitions. Second operand 7 states. [2019-11-07 04:08:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:30,944 INFO L93 Difference]: Finished difference Result 2253 states and 3521 transitions. [2019-11-07 04:08:30,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:08:30,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-11-07 04:08:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:30,963 INFO L225 Difference]: With dead ends: 2253 [2019-11-07 04:08:30,963 INFO L226 Difference]: Without dead ends: 1198 [2019-11-07 04:08:30,971 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:08:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2019-11-07 04:08:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1198. [2019-11-07 04:08:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-11-07 04:08:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1796 transitions. [2019-11-07 04:08:31,061 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1796 transitions. Word has length 131 [2019-11-07 04:08:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:31,062 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1796 transitions. [2019-11-07 04:08:31,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:31,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1796 transitions. [2019-11-07 04:08:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 04:08:31,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:31,066 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] [2019-11-07 04:08:31,066 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:31,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:31,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1713093847, now seen corresponding path program 1 times [2019-11-07 04:08:31,067 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:31,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155863866] [2019-11-07 04:08:31,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:31,353 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 04:08:31,359 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155863866] [2019-11-07 04:08:31,359 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:31,359 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:31,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982461691] [2019-11-07 04:08:31,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:31,360 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:31,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:31,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:31,361 INFO L87 Difference]: Start difference. First operand 1198 states and 1796 transitions. Second operand 7 states. [2019-11-07 04:08:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:34,353 INFO L93 Difference]: Finished difference Result 2122 states and 3191 transitions. [2019-11-07 04:08:34,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:08:34,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-11-07 04:08:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:34,364 INFO L225 Difference]: With dead ends: 2122 [2019-11-07 04:08:34,364 INFO L226 Difference]: Without dead ends: 1268 [2019-11-07 04:08:34,370 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:08:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2019-11-07 04:08:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1225. [2019-11-07 04:08:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2019-11-07 04:08:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1830 transitions. [2019-11-07 04:08:34,441 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1830 transitions. Word has length 133 [2019-11-07 04:08:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:34,442 INFO L462 AbstractCegarLoop]: Abstraction has 1225 states and 1830 transitions. [2019-11-07 04:08:34,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1830 transitions. [2019-11-07 04:08:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:08:34,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:34,445 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:08:34,445 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:34,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:34,446 INFO L82 PathProgramCache]: Analyzing trace with hash 620895629, now seen corresponding path program 1 times [2019-11-07 04:08:34,446 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:34,446 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831536936] [2019-11-07 04:08:34,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 04:08:35,160 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831536936] [2019-11-07 04:08:35,160 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:35,161 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 04:08:35,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750857217] [2019-11-07 04:08:35,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 04:08:35,162 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:35,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 04:08:35,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-11-07 04:08:35,164 INFO L87 Difference]: Start difference. First operand 1225 states and 1830 transitions. Second operand 26 states. [2019-11-07 04:08:38,690 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2019-11-07 04:08:44,714 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19