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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:54,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:54,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:54,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:54,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:54,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:54,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:54,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:54,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:54,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:54,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:54,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:54,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:54,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:54,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:54,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:54,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:54,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:54,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:54,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:54,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:54,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:54,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:54,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:54,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:54,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:54,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:54,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:54,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:54,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:54,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:54,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:54,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:54,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:54,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:54,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:54,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:54,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:54,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:54,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:54,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:54,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:02:54,601 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:54,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:54,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:54,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:54,603 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:54,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:54,603 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:54,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:54,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:54,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:54,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:54,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:54,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:54,605 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:54,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:54,605 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:54,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:54,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:54,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:54,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:54,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:54,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:54,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:54,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:54,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:54,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:54,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:54,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:54,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:02:54,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:54,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:54,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:54,941 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:54,941 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:54,942 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2019-10-13 23:02:55,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d37a131/10bb4caebd814bbfba55e2d431884e21/FLAG9ae14b52a [2019-10-13 23:02:55,724 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:55,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2019-10-13 23:02:55,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d37a131/10bb4caebd814bbfba55e2d431884e21/FLAG9ae14b52a [2019-10-13 23:02:55,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d37a131/10bb4caebd814bbfba55e2d431884e21 [2019-10-13 23:02:55,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:55,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:55,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:55,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:55,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:55,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:55" (1/1) ... [2019-10-13 23:02:55,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5fb77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:55, skipping insertion in model container [2019-10-13 23:02:55,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:55" (1/1) ... [2019-10-13 23:02:55,904 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:55,974 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:56,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:56,730 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:56,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:56,952 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:56,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56 WrapperNode [2019-10-13 23:02:56,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:56,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:56,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:56,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:56,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:56,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:56,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:56,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:57,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:57,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:57,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (1/1) ... [2019-10-13 23:02:57,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:57,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:57,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:57,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:57,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:02:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:02:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:57,244 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:57,244 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:57,248 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 23:02:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:02:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:02:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 23:02:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 23:02:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 23:02:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:02,481 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:02,481 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:02,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:02 BoogieIcfgContainer [2019-10-13 23:03:02,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:02,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:02,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:02,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:02,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:55" (1/3) ... [2019-10-13 23:03:02,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba87ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:02, skipping insertion in model container [2019-10-13 23:03:02,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:56" (2/3) ... [2019-10-13 23:03:02,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba87ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:02, skipping insertion in model container [2019-10-13 23:03:02,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:02" (3/3) ... [2019-10-13 23:03:02,491 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2019-10-13 23:03:02,500 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:02,510 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:02,521 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:02,552 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:02,552 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:02,552 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:02,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:02,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:02,553 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:02,553 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:02,553 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states. [2019-10-13 23:03:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 23:03:02,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:02,617 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:02,620 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:02,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1486167384, now seen corresponding path program 1 times [2019-10-13 23:03:02,636 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:02,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817377403] [2019-10-13 23:03:02,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:02,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:02,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:03,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817377403] [2019-10-13 23:03:03,325 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:03,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:03,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956916745] [2019-10-13 23:03:03,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:03,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:03,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:03,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:03,350 INFO L87 Difference]: Start difference. First operand 543 states. Second operand 8 states. [2019-10-13 23:03:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:03,554 INFO L93 Difference]: Finished difference Result 839 states and 1298 transitions. [2019-10-13 23:03:03,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:03,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-10-13 23:03:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:03,594 INFO L225 Difference]: With dead ends: 839 [2019-10-13 23:03:03,594 INFO L226 Difference]: Without dead ends: 457 [2019-10-13 23:03:03,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-10-13 23:03:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 422. [2019-10-13 23:03:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2019-10-13 23:03:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 630 transitions. [2019-10-13 23:03:03,736 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 630 transitions. Word has length 115 [2019-10-13 23:03:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:03,743 INFO L462 AbstractCegarLoop]: Abstraction has 422 states and 630 transitions. [2019-10-13 23:03:03,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 630 transitions. [2019-10-13 23:03:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:03:03,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:03,755 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:03,755 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:03,756 INFO L82 PathProgramCache]: Analyzing trace with hash -890542085, now seen corresponding path program 1 times [2019-10-13 23:03:03,756 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:03,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195325081] [2019-10-13 23:03:03,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:03,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:03,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:04,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195325081] [2019-10-13 23:03:04,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:04,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:04,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495535241] [2019-10-13 23:03:04,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:04,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:04,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:04,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:04,126 INFO L87 Difference]: Start difference. First operand 422 states and 630 transitions. Second operand 7 states. [2019-10-13 23:03:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:07,833 INFO L93 Difference]: Finished difference Result 1275 states and 1973 transitions. [2019-10-13 23:03:07,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:03:07,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-13 23:03:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:07,840 INFO L225 Difference]: With dead ends: 1275 [2019-10-13 23:03:07,841 INFO L226 Difference]: Without dead ends: 906 [2019-10-13 23:03:07,843 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:03:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2019-10-13 23:03:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 879. [2019-10-13 23:03:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2019-10-13 23:03:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1362 transitions. [2019-10-13 23:03:07,920 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1362 transitions. Word has length 120 [2019-10-13 23:03:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:07,921 INFO L462 AbstractCegarLoop]: Abstraction has 879 states and 1362 transitions. [2019-10-13 23:03:07,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1362 transitions. [2019-10-13 23:03:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:03:07,927 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:07,928 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:07,928 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:07,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2120130814, now seen corresponding path program 1 times [2019-10-13 23:03:07,929 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:07,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312352847] [2019-10-13 23:03:07,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:07,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:07,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:08,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312352847] [2019-10-13 23:03:08,171 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:08,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:03:08,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111744546] [2019-10-13 23:03:08,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:03:08,174 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:08,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:03:08,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:08,175 INFO L87 Difference]: Start difference. First operand 879 states and 1362 transitions. Second operand 5 states. [2019-10-13 23:03:08,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:08,270 INFO L93 Difference]: Finished difference Result 1385 states and 2161 transitions. [2019-10-13 23:03:08,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:08,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-10-13 23:03:08,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:08,279 INFO L225 Difference]: With dead ends: 1385 [2019-10-13 23:03:08,279 INFO L226 Difference]: Without dead ends: 901 [2019-10-13 23:03:08,282 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:08,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2019-10-13 23:03:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 891. [2019-10-13 23:03:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-13 23:03:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1377 transitions. [2019-10-13 23:03:08,356 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1377 transitions. Word has length 124 [2019-10-13 23:03:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:08,359 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1377 transitions. [2019-10-13 23:03:08,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:03:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1377 transitions. [2019-10-13 23:03:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 23:03:08,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:08,366 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:08,366 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:08,367 INFO L82 PathProgramCache]: Analyzing trace with hash 678689370, now seen corresponding path program 1 times [2019-10-13 23:03:08,368 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:08,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14124964] [2019-10-13 23:03:08,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:08,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:08,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:08,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14124964] [2019-10-13 23:03:08,809 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:08,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:08,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959255062] [2019-10-13 23:03:08,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:08,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:08,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:08,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:08,812 INFO L87 Difference]: Start difference. First operand 891 states and 1377 transitions. Second operand 8 states. [2019-10-13 23:03:12,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:12,216 INFO L93 Difference]: Finished difference Result 1876 states and 2908 transitions. [2019-10-13 23:03:12,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:12,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-10-13 23:03:12,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:12,228 INFO L225 Difference]: With dead ends: 1876 [2019-10-13 23:03:12,229 INFO L226 Difference]: Without dead ends: 1284 [2019-10-13 23:03:12,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2019-10-13 23:03:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1234. [2019-10-13 23:03:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2019-10-13 23:03:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1867 transitions. [2019-10-13 23:03:12,321 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1867 transitions. Word has length 128 [2019-10-13 23:03:12,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:12,321 INFO L462 AbstractCegarLoop]: Abstraction has 1234 states and 1867 transitions. [2019-10-13 23:03:12,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1867 transitions. [2019-10-13 23:03:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:03:12,327 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:12,327 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:12,327 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:12,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1304617669, now seen corresponding path program 1 times [2019-10-13 23:03:12,328 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:12,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081246128] [2019-10-13 23:03:12,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:12,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:12,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:12,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081246128] [2019-10-13 23:03:12,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:12,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:12,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515421292] [2019-10-13 23:03:12,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:12,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:12,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:12,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:12,638 INFO L87 Difference]: Start difference. First operand 1234 states and 1867 transitions. Second operand 7 states. [2019-10-13 23:03:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:12,852 INFO L93 Difference]: Finished difference Result 2313 states and 3586 transitions. [2019-10-13 23:03:12,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:12,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:03:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:12,867 INFO L225 Difference]: With dead ends: 2313 [2019-10-13 23:03:12,867 INFO L226 Difference]: Without dead ends: 1234 [2019-10-13 23:03:12,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2019-10-13 23:03:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2019-10-13 23:03:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2019-10-13 23:03:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1835 transitions. [2019-10-13 23:03:12,967 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1835 transitions. Word has length 131 [2019-10-13 23:03:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:12,968 INFO L462 AbstractCegarLoop]: Abstraction has 1234 states and 1835 transitions. [2019-10-13 23:03:12,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1835 transitions. [2019-10-13 23:03:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 23:03:12,975 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:12,976 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:12,976 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:12,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2145055282, now seen corresponding path program 1 times [2019-10-13 23:03:12,978 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:12,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309892360] [2019-10-13 23:03:12,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:12,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:12,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:03:13,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309892360] [2019-10-13 23:03:13,298 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:13,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:13,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94109883] [2019-10-13 23:03:13,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:13,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:13,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:13,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:13,304 INFO L87 Difference]: Start difference. First operand 1234 states and 1835 transitions. Second operand 7 states. [2019-10-13 23:03:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:16,417 INFO L93 Difference]: Finished difference Result 2182 states and 3256 transitions. [2019-10-13 23:03:16,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:16,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-13 23:03:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:16,429 INFO L225 Difference]: With dead ends: 2182 [2019-10-13 23:03:16,429 INFO L226 Difference]: Without dead ends: 1304 [2019-10-13 23:03:16,433 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:03:16,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2019-10-13 23:03:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1261. [2019-10-13 23:03:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2019-10-13 23:03:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1869 transitions. [2019-10-13 23:03:16,496 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1869 transitions. Word has length 133 [2019-10-13 23:03:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:16,497 INFO L462 AbstractCegarLoop]: Abstraction has 1261 states and 1869 transitions. [2019-10-13 23:03:16,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1869 transitions. [2019-10-13 23:03:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 23:03:16,500 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:16,500 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:16,500 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:16,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1726253342, now seen corresponding path program 1 times [2019-10-13 23:03:16,501 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:16,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410087375] [2019-10-13 23:03:16,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:16,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 23:03:17,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410087375] [2019-10-13 23:03:17,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426790378] [2019-10-13 23:03:17,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:17,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 23:03:17,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:03:17,955 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:03:18,438 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:03:18,438 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [26] total 33 [2019-10-13 23:03:18,438 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525077974] [2019-10-13 23:03:18,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:03:18,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:18,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:03:18,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 23:03:18,440 INFO L87 Difference]: Start difference. First operand 1261 states and 1869 transitions. Second operand 9 states. [2019-10-13 23:03:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:19,716 INFO L93 Difference]: Finished difference Result 1335 states and 1983 transitions. [2019-10-13 23:03:19,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:03:19,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2019-10-13 23:03:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:19,732 INFO L225 Difference]: With dead ends: 1335 [2019-10-13 23:03:19,732 INFO L226 Difference]: Without dead ends: 1318 [2019-10-13 23:03:19,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 23:03:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2019-10-13 23:03:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1288. [2019-10-13 23:03:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2019-10-13 23:03:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1908 transitions. [2019-10-13 23:03:19,875 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1908 transitions. Word has length 137 [2019-10-13 23:03:19,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:19,875 INFO L462 AbstractCegarLoop]: Abstraction has 1288 states and 1908 transitions. [2019-10-13 23:03:19,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:03:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1908 transitions. [2019-10-13 23:03:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 23:03:19,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:19,879 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:20,093 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:20,093 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:20,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:20,093 INFO L82 PathProgramCache]: Analyzing trace with hash 797122739, now seen corresponding path program 1 times [2019-10-13 23:03:20,094 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:20,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020094339] [2019-10-13 23:03:20,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:03:20,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020094339] [2019-10-13 23:03:20,431 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:20,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:03:20,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182907250] [2019-10-13 23:03:20,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:03:20,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:20,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:03:20,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:03:20,433 INFO L87 Difference]: Start difference. First operand 1288 states and 1908 transitions. Second operand 8 states. [2019-10-13 23:03:20,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:20,524 INFO L93 Difference]: Finished difference Result 1305 states and 1928 transitions. [2019-10-13 23:03:20,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:03:20,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2019-10-13 23:03:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:20,534 INFO L225 Difference]: With dead ends: 1305 [2019-10-13 23:03:20,534 INFO L226 Difference]: Without dead ends: 1288 [2019-10-13 23:03:20,536 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:03:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2019-10-13 23:03:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2019-10-13 23:03:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2019-10-13 23:03:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1903 transitions. [2019-10-13 23:03:20,624 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1903 transitions. Word has length 142 [2019-10-13 23:03:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:20,625 INFO L462 AbstractCegarLoop]: Abstraction has 1288 states and 1903 transitions. [2019-10-13 23:03:20,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:03:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1903 transitions. [2019-10-13 23:03:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:03:20,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:20,631 INFO L380 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:20,631 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:20,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1515688923, now seen corresponding path program 1 times [2019-10-13 23:03:20,632 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:20,632 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927880962] [2019-10-13 23:03:20,633 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,633 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:20,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:03:21,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927880962] [2019-10-13 23:03:21,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485453289] [2019-10-13 23:03:21,235 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 [2019-10-13 23:03:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:21,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 23:03:21,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:21,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:03:22,016 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:22,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:03:22,639 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:03:22,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [26] total 31 [2019-10-13 23:03:22,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780408498] [2019-10-13 23:03:22,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:22,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:22,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:22,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2019-10-13 23:03:22,642 INFO L87 Difference]: Start difference. First operand 1288 states and 1903 transitions. Second operand 7 states. [2019-10-13 23:03:22,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:22,735 INFO L93 Difference]: Finished difference Result 1329 states and 1954 transitions. [2019-10-13 23:03:22,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:03:22,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2019-10-13 23:03:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:22,744 INFO L225 Difference]: With dead ends: 1329 [2019-10-13 23:03:22,744 INFO L226 Difference]: Without dead ends: 1312 [2019-10-13 23:03:22,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 334 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:03:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2019-10-13 23:03:22,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2019-10-13 23:03:22,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2019-10-13 23:03:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1927 transitions. [2019-10-13 23:03:22,819 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1927 transitions. Word has length 160 [2019-10-13 23:03:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:22,820 INFO L462 AbstractCegarLoop]: Abstraction has 1310 states and 1927 transitions. [2019-10-13 23:03:22,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1927 transitions. [2019-10-13 23:03:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 23:03:22,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:22,826 INFO L380 BasicCegarLoop]: trace histogram [7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:23,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:03:23,045 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:23,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1605980684, now seen corresponding path program 1 times [2019-10-13 23:03:23,045 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:23,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920248678] [2019-10-13 23:03:23,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:23,046 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:23,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:03:23,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920248678] [2019-10-13 23:03:23,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947849315] [2019-10-13 23:03:23,324 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 [2019-10-13 23:03:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:23,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 66 conjunts are in the unsatisfiable core [2019-10-13 23:03:23,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:03:24,748 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-10-13 23:03:25,221 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-10-13 23:03:25,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:25,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:25,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:25,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:25,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:03:25,705 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-10-13 23:03:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 23:03:25,987 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:03:26,457 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-13 23:03:26,997 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13