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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:11:45,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:11:45,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:11:46,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:11:46,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:11:46,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:11:46,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:11:46,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:11:46,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:11:46,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:11:46,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:11:46,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:11:46,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:11:46,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:11:46,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:11:46,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:11:46,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:11:46,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:11:46,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:11:46,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:11:46,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:11:46,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:11:46,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:11:46,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:11:46,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:11:46,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:11:46,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:11:46,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:11:46,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:11:46,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:11:46,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:11:46,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:11:46,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:11:46,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:11:46,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:11:46,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:11:46,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:11:46,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:11:46,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:11:46,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:11:46,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:11:46,065 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 21:11:46,094 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:11:46,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:11:46,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:11:46,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:11:46,097 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:11:46,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:11:46,098 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:11:46,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:11:46,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:11:46,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:11:46,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:11:46,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:11:46,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:11:46,101 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:11:46,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:11:46,101 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:11:46,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:11:46,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:11:46,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:11:46,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:11:46,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:11:46,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:46,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:11:46,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:11:46,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:11:46,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:11:46,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:11:46,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:11:46,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:11:46,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:11:46,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:11:46,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:11:46,432 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:11:46,433 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:11:46,433 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-13 21:11:46,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebb2c645f/1905d5d6c2144aeb95c47e86fa481078/FLAG496baf259 [2019-10-13 21:11:47,192 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:11:47,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-13 21:11:47,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebb2c645f/1905d5d6c2144aeb95c47e86fa481078/FLAG496baf259 [2019-10-13 21:11:47,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebb2c645f/1905d5d6c2144aeb95c47e86fa481078 [2019-10-13 21:11:47,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:11:47,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:11:47,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:47,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:11:47,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:11:47,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:47" (1/1) ... [2019-10-13 21:11:47,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2e9cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:47, skipping insertion in model container [2019-10-13 21:11:47,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:47" (1/1) ... [2019-10-13 21:11:47,415 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:11:47,508 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:11:48,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:48,309 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:11:48,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:48,579 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:11:48,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48 WrapperNode [2019-10-13 21:11:48,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:48,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:11:48,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:11:48,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:11:48,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (1/1) ... [2019-10-13 21:11:48,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:11:48,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:11:48,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:11:48,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:11:48,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (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 21:11:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:11:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:11:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:11:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:11:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:11:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:11:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:11:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:11:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:11:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:11:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:11:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:11:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:11:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:11:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:11:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:11:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:11:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:11:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:11:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:11:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:11:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:11:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:11:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:11:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:11:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:11:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 21:11:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:11:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 21:11:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:11:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:11:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:11:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:11:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:11:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:11:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:11:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:11:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:11:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:11:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:11:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:11:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:11:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:11:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:11:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:11:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:11:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:11:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:11:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:11:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:11:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:11:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:11:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:11:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:11:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:11:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:11:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:11:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:11:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:11:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:11:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:11:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:11:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:11:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:11:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:11:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:11:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:11:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:11:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:11:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:11:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:11:48,897 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:11:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:11:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:11:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:11:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:11:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:11:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:11:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:11:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:11:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:11:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:11:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:11:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:11:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:11:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:11:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:11:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:11:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:11:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:11:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:11:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:11:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:11:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:11:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:11:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:11:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:11:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:11:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:11:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:11:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:11:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:11:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:11:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:11:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:11:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:11:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:11:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:11:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:11:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:11:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:11:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:11:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 21:11:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 21:11:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:11:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:11:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:11:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:11:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:11:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:11:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:11:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:11:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:11:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:11:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:11:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:11:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:11:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:11:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:11:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:11:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:11:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:11:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:11:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:11:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:11:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:11:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:11:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:11:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:11:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:11:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:11:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:11:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:11:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:11:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:11:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:11:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:11:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:11:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:11:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:11:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:11:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:11:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:11:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:11:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:11:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:11:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:11:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:11:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:11:51,447 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:11:51,447 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:11:51,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:51 BoogieIcfgContainer [2019-10-13 21:11:51,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:11:51,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:11:51,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:11:51,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:11:51,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:11:47" (1/3) ... [2019-10-13 21:11:51,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6ec00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:51, skipping insertion in model container [2019-10-13 21:11:51,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:48" (2/3) ... [2019-10-13 21:11:51,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6ec00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:51, skipping insertion in model container [2019-10-13 21:11:51,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:51" (3/3) ... [2019-10-13 21:11:51,458 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2019-10-13 21:11:51,468 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:11:51,480 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:11:51,493 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:11:51,550 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:11:51,550 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:11:51,550 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:11:51,550 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:11:51,551 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:11:51,551 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:11:51,551 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:11:51,551 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:11:51,598 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states. [2019-10-13 21:11:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:11:51,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:51,626 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:51,630 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:51,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:51,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1927707397, now seen corresponding path program 1 times [2019-10-13 21:11:51,647 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:51,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429094563] [2019-10-13 21:11:51,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:52,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429094563] [2019-10-13 21:11:52,485 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:52,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:52,486 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007550248] [2019-10-13 21:11:52,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:52,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:52,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:52,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:52,514 INFO L87 Difference]: Start difference. First operand 825 states. Second operand 7 states. [2019-10-13 21:11:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:52,839 INFO L93 Difference]: Finished difference Result 1315 states and 2110 transitions. [2019-10-13 21:11:52,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:52,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-13 21:11:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:52,868 INFO L225 Difference]: With dead ends: 1315 [2019-10-13 21:11:52,868 INFO L226 Difference]: Without dead ends: 666 [2019-10-13 21:11:52,877 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 21:11:52,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-13 21:11:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2019-10-13 21:11:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-10-13 21:11:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1050 transitions. [2019-10-13 21:11:53,024 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1050 transitions. Word has length 93 [2019-10-13 21:11:53,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:53,025 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 1050 transitions. [2019-10-13 21:11:53,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1050 transitions. [2019-10-13 21:11:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:11:53,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:53,032 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:53,032 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash -385946519, now seen corresponding path program 1 times [2019-10-13 21:11:53,033 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:53,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13495177] [2019-10-13 21:11:53,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:53,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13495177] [2019-10-13 21:11:53,298 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:53,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:53,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460813060] [2019-10-13 21:11:53,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:53,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:53,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:53,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:53,357 INFO L87 Difference]: Start difference. First operand 664 states and 1050 transitions. Second operand 4 states. [2019-10-13 21:11:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:53,467 INFO L93 Difference]: Finished difference Result 1294 states and 2065 transitions. [2019-10-13 21:11:53,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:53,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-13 21:11:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:53,483 INFO L225 Difference]: With dead ends: 1294 [2019-10-13 21:11:53,483 INFO L226 Difference]: Without dead ends: 646 [2019-10-13 21:11:53,488 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2019-10-13 21:11:53,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2019-10-13 21:11:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2019-10-13 21:11:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1017 transitions. [2019-10-13 21:11:53,554 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1017 transitions. Word has length 94 [2019-10-13 21:11:53,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:53,555 INFO L462 AbstractCegarLoop]: Abstraction has 646 states and 1017 transitions. [2019-10-13 21:11:53,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1017 transitions. [2019-10-13 21:11:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:11:53,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:53,557 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:53,558 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:53,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1755116079, now seen corresponding path program 1 times [2019-10-13 21:11:53,558 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:53,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756353247] [2019-10-13 21:11:53,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:53,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756353247] [2019-10-13 21:11:53,728 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:53,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:53,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795594522] [2019-10-13 21:11:53,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:53,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:53,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:53,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:53,731 INFO L87 Difference]: Start difference. First operand 646 states and 1017 transitions. Second operand 7 states. [2019-10-13 21:11:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:53,847 INFO L93 Difference]: Finished difference Result 1263 states and 2007 transitions. [2019-10-13 21:11:53,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:53,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-13 21:11:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:53,855 INFO L225 Difference]: With dead ends: 1263 [2019-10-13 21:11:53,855 INFO L226 Difference]: Without dead ends: 640 [2019-10-13 21:11:53,859 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 21:11:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2019-10-13 21:11:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2019-10-13 21:11:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2019-10-13 21:11:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1004 transitions. [2019-10-13 21:11:53,903 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1004 transitions. Word has length 94 [2019-10-13 21:11:53,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:53,906 INFO L462 AbstractCegarLoop]: Abstraction has 640 states and 1004 transitions. [2019-10-13 21:11:53,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1004 transitions. [2019-10-13 21:11:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:11:53,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:53,909 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:53,909 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:53,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2113338455, now seen corresponding path program 1 times [2019-10-13 21:11:53,910 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:53,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352534259] [2019-10-13 21:11:53,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:53,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:54,143 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352534259] [2019-10-13 21:11:54,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:54,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:54,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806067272] [2019-10-13 21:11:54,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:54,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:54,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:54,147 INFO L87 Difference]: Start difference. First operand 640 states and 1004 transitions. Second operand 7 states. [2019-10-13 21:11:54,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:54,270 INFO L93 Difference]: Finished difference Result 1251 states and 1981 transitions. [2019-10-13 21:11:54,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:54,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-13 21:11:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:54,279 INFO L225 Difference]: With dead ends: 1251 [2019-10-13 21:11:54,279 INFO L226 Difference]: Without dead ends: 634 [2019-10-13 21:11:54,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 21:11:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-13 21:11:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2019-10-13 21:11:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2019-10-13 21:11:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 991 transitions. [2019-10-13 21:11:54,321 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 991 transitions. Word has length 95 [2019-10-13 21:11:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:54,395 INFO L462 AbstractCegarLoop]: Abstraction has 634 states and 991 transitions. [2019-10-13 21:11:54,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 991 transitions. [2019-10-13 21:11:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:11:54,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:54,398 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:54,398 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:54,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1806825461, now seen corresponding path program 1 times [2019-10-13 21:11:54,398 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:54,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694676411] [2019-10-13 21:11:54,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:54,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694676411] [2019-10-13 21:11:54,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:54,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:54,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759969578] [2019-10-13 21:11:54,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:54,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:54,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:54,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:54,564 INFO L87 Difference]: Start difference. First operand 634 states and 991 transitions. Second operand 7 states. [2019-10-13 21:11:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:54,652 INFO L93 Difference]: Finished difference Result 1239 states and 1955 transitions. [2019-10-13 21:11:54,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:54,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:11:54,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:54,658 INFO L225 Difference]: With dead ends: 1239 [2019-10-13 21:11:54,659 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 21:11:54,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 21:11:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 21:11:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-13 21:11:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:11:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 978 transitions. [2019-10-13 21:11:54,686 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 978 transitions. Word has length 96 [2019-10-13 21:11:54,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:54,686 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 978 transitions. [2019-10-13 21:11:54,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 978 transitions. [2019-10-13 21:11:54,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:11:54,688 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:54,689 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:54,689 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:54,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1099200010, now seen corresponding path program 1 times [2019-10-13 21:11:54,689 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:54,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57747999] [2019-10-13 21:11:54,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:54,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57747999] [2019-10-13 21:11:54,839 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:54,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:54,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753782966] [2019-10-13 21:11:54,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:54,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:54,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:54,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:54,841 INFO L87 Difference]: Start difference. First operand 628 states and 978 transitions. Second operand 7 states. [2019-10-13 21:11:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:54,938 INFO L93 Difference]: Finished difference Result 1227 states and 1929 transitions. [2019-10-13 21:11:54,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:54,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:11:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:54,948 INFO L225 Difference]: With dead ends: 1227 [2019-10-13 21:11:54,948 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 21:11:54,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 21:11:54,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 21:11:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-13 21:11:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:11:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 977 transitions. [2019-10-13 21:11:54,982 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 977 transitions. Word has length 96 [2019-10-13 21:11:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:54,983 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 977 transitions. [2019-10-13 21:11:54,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 977 transitions. [2019-10-13 21:11:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:11:54,987 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:54,988 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:54,988 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:54,988 INFO L82 PathProgramCache]: Analyzing trace with hash 918010957, now seen corresponding path program 1 times [2019-10-13 21:11:54,989 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:54,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430214163] [2019-10-13 21:11:54,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:54,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:55,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430214163] [2019-10-13 21:11:55,229 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:55,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:55,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787019708] [2019-10-13 21:11:55,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:55,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:55,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:55,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:55,231 INFO L87 Difference]: Start difference. First operand 628 states and 977 transitions. Second operand 5 states. [2019-10-13 21:11:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:55,314 INFO L93 Difference]: Finished difference Result 1226 states and 1926 transitions. [2019-10-13 21:11:55,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:55,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-13 21:11:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:55,320 INFO L225 Difference]: With dead ends: 1226 [2019-10-13 21:11:55,320 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 21:11:55,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 21:11:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-13 21:11:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:11:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 976 transitions. [2019-10-13 21:11:55,349 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 976 transitions. Word has length 97 [2019-10-13 21:11:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:55,349 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 976 transitions. [2019-10-13 21:11:55,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 976 transitions. [2019-10-13 21:11:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:11:55,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:55,352 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:55,352 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:55,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1933004815, now seen corresponding path program 1 times [2019-10-13 21:11:55,353 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:55,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409195596] [2019-10-13 21:11:55,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:55,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409195596] [2019-10-13 21:11:55,492 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:55,492 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:55,492 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325482642] [2019-10-13 21:11:55,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:55,493 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:55,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:55,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:55,494 INFO L87 Difference]: Start difference. First operand 628 states and 976 transitions. Second operand 5 states. [2019-10-13 21:11:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:55,586 INFO L93 Difference]: Finished difference Result 1226 states and 1924 transitions. [2019-10-13 21:11:55,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:55,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-13 21:11:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:55,595 INFO L225 Difference]: With dead ends: 1226 [2019-10-13 21:11:55,595 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 21:11:55,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 21:11:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-13 21:11:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:11:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 975 transitions. [2019-10-13 21:11:55,633 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 975 transitions. Word has length 98 [2019-10-13 21:11:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:55,634 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 975 transitions. [2019-10-13 21:11:55,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:55,634 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 975 transitions. [2019-10-13 21:11:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:11:55,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:55,636 INFO L380 BasicCegarLoop]: trace histogram [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 21:11:55,636 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:55,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:55,637 INFO L82 PathProgramCache]: Analyzing trace with hash 432757288, now seen corresponding path program 1 times [2019-10-13 21:11:55,637 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:55,637 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568468792] [2019-10-13 21:11:55,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,637 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:55,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568468792] [2019-10-13 21:11:55,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:55,831 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:55,831 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359781940] [2019-10-13 21:11:55,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:55,832 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:55,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:55,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:55,833 INFO L87 Difference]: Start difference. First operand 628 states and 975 transitions. Second operand 5 states. [2019-10-13 21:11:55,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:55,927 INFO L93 Difference]: Finished difference Result 1226 states and 1922 transitions. [2019-10-13 21:11:55,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:55,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-13 21:11:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:55,936 INFO L225 Difference]: With dead ends: 1226 [2019-10-13 21:11:55,937 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 21:11:55,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 21:11:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-13 21:11:55,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:11:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 974 transitions. [2019-10-13 21:11:55,975 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 974 transitions. Word has length 99 [2019-10-13 21:11:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:55,976 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 974 transitions. [2019-10-13 21:11:55,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 974 transitions. [2019-10-13 21:11:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:11:55,978 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:55,978 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:55,978 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1309876268, now seen corresponding path program 1 times [2019-10-13 21:11:55,979 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:55,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398848963] [2019-10-13 21:11:55,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,980 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:55,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:56,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398848963] [2019-10-13 21:11:56,226 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:56,226 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:56,227 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857735930] [2019-10-13 21:11:56,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:56,228 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:56,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:56,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:56,229 INFO L87 Difference]: Start difference. First operand 628 states and 974 transitions. Second operand 5 states. [2019-10-13 21:11:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:56,315 INFO L93 Difference]: Finished difference Result 1226 states and 1920 transitions. [2019-10-13 21:11:56,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:56,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-13 21:11:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:56,322 INFO L225 Difference]: With dead ends: 1226 [2019-10-13 21:11:56,322 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 21:11:56,336 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 21:11:56,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2019-10-13 21:11:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:11:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 973 transitions. [2019-10-13 21:11:56,364 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 973 transitions. Word has length 100 [2019-10-13 21:11:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:56,365 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 973 transitions. [2019-10-13 21:11:56,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 973 transitions. [2019-10-13 21:11:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:11:56,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:56,367 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:56,367 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:56,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1011268605, now seen corresponding path program 1 times [2019-10-13 21:11:56,368 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:56,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679297149] [2019-10-13 21:11:56,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:56,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:56,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:56,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679297149] [2019-10-13 21:11:56,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478297272] [2019-10-13 21:11:56,580 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 21:11:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:57,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:11:57,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:57,286 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:57,422 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:57,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:11:57,423 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247602586] [2019-10-13 21:11:57,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:57,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:57,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:57,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:57,424 INFO L87 Difference]: Start difference. First operand 628 states and 973 transitions. Second operand 3 states. [2019-10-13 21:11:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:57,533 INFO L93 Difference]: Finished difference Result 1763 states and 2779 transitions. [2019-10-13 21:11:57,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:57,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-13 21:11:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:57,544 INFO L225 Difference]: With dead ends: 1763 [2019-10-13 21:11:57,544 INFO L226 Difference]: Without dead ends: 1169 [2019-10-13 21:11:57,548 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-10-13 21:11:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1156. [2019-10-13 21:11:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2019-10-13 21:11:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1809 transitions. [2019-10-13 21:11:57,607 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1809 transitions. Word has length 101 [2019-10-13 21:11:57,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:57,608 INFO L462 AbstractCegarLoop]: Abstraction has 1156 states and 1809 transitions. [2019-10-13 21:11:57,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1809 transitions. [2019-10-13 21:11:57,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:11:57,610 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:57,610 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:11:57,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:57,829 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:57,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:57,829 INFO L82 PathProgramCache]: Analyzing trace with hash 522332344, now seen corresponding path program 1 times [2019-10-13 21:11:57,829 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:57,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914868614] [2019-10-13 21:11:57,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:57,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:57,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:58,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914868614] [2019-10-13 21:11:58,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:58,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:58,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37766612] [2019-10-13 21:11:58,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:58,017 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:58,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:58,017 INFO L87 Difference]: Start difference. First operand 1156 states and 1809 transitions. Second operand 7 states. [2019-10-13 21:12:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:00,872 INFO L93 Difference]: Finished difference Result 3402 states and 5472 transitions. [2019-10-13 21:12:00,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:00,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2019-10-13 21:12:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:00,892 INFO L225 Difference]: With dead ends: 3402 [2019-10-13 21:12:00,892 INFO L226 Difference]: Without dead ends: 2280 [2019-10-13 21:12:00,899 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2019-10-13 21:12:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2214. [2019-10-13 21:12:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2214 states. [2019-10-13 21:12:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3549 transitions. [2019-10-13 21:12:01,033 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3549 transitions. Word has length 105 [2019-10-13 21:12:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:01,033 INFO L462 AbstractCegarLoop]: Abstraction has 2214 states and 3549 transitions. [2019-10-13 21:12:01,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3549 transitions. [2019-10-13 21:12:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 21:12:01,035 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:01,035 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:12:01,036 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:01,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2018828006, now seen corresponding path program 1 times [2019-10-13 21:12:01,037 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:01,037 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725699366] [2019-10-13 21:12:01,037 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:01,037 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:01,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:12:01,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725699366] [2019-10-13 21:12:01,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021176469] [2019-10-13 21:12:01,262 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 21:12:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:01,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:01,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:01,825 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:01,938 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:01,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:12:01,939 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407428568] [2019-10-13 21:12:01,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:01,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:01,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:01,940 INFO L87 Difference]: Start difference. First operand 2214 states and 3549 transitions. Second operand 3 states. [2019-10-13 21:12:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:02,079 INFO L93 Difference]: Finished difference Result 5462 states and 8838 transitions. [2019-10-13 21:12:02,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:02,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-13 21:12:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:02,106 INFO L225 Difference]: With dead ends: 5462 [2019-10-13 21:12:02,107 INFO L226 Difference]: Without dead ends: 3282 [2019-10-13 21:12:02,120 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2019-10-13 21:12:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3182. [2019-10-13 21:12:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3182 states. [2019-10-13 21:12:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 5119 transitions. [2019-10-13 21:12:02,294 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 5119 transitions. Word has length 102 [2019-10-13 21:12:02,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:02,294 INFO L462 AbstractCegarLoop]: Abstraction has 3182 states and 5119 transitions. [2019-10-13 21:12:02,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 5119 transitions. [2019-10-13 21:12:02,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:02,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:02,297 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:12:02,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:02,514 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:02,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1548757580, now seen corresponding path program 1 times [2019-10-13 21:12:02,516 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:02,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200828113] [2019-10-13 21:12:02,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:02,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:02,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:12:02,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200828113] [2019-10-13 21:12:02,784 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234103036] [2019-10-13 21:12:02,784 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 21:12:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:03,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:12:03,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:03,621 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:03,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:12:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:03,981 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:03,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-13 21:12:03,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186860068] [2019-10-13 21:12:03,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:12:03,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:12:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:12:03,985 INFO L87 Difference]: Start difference. First operand 3182 states and 5119 transitions. Second operand 11 states. [2019-10-13 21:12:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:09,614 INFO L93 Difference]: Finished difference Result 14248 states and 23312 transitions. [2019-10-13 21:12:09,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:12:09,614 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-10-13 21:12:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:09,722 INFO L225 Difference]: With dead ends: 14248 [2019-10-13 21:12:09,723 INFO L226 Difference]: Without dead ends: 11100 [2019-10-13 21:12:09,749 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:12:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11100 states. [2019-10-13 21:12:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11100 to 10980. [2019-10-13 21:12:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10980 states. [2019-10-13 21:12:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 17536 transitions. [2019-10-13 21:12:10,323 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 17536 transitions. Word has length 105 [2019-10-13 21:12:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:10,324 INFO L462 AbstractCegarLoop]: Abstraction has 10980 states and 17536 transitions. [2019-10-13 21:12:10,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:12:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 17536 transitions. [2019-10-13 21:12:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:10,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:10,326 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 21:12:10,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:10,536 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash 30313455, now seen corresponding path program 1 times [2019-10-13 21:12:10,537 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:10,546 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967843850] [2019-10-13 21:12:10,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:10,547 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:10,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:10,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967843850] [2019-10-13 21:12:10,742 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:10,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:10,743 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945538238] [2019-10-13 21:12:10,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:10,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:10,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:10,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:10,745 INFO L87 Difference]: Start difference. First operand 10980 states and 17536 transitions. Second operand 4 states. [2019-10-13 21:12:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:11,795 INFO L93 Difference]: Finished difference Result 21944 states and 35353 transitions. [2019-10-13 21:12:11,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:11,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-13 21:12:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:11,916 INFO L225 Difference]: With dead ends: 21944 [2019-10-13 21:12:11,917 INFO L226 Difference]: Without dead ends: 10998 [2019-10-13 21:12:11,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:12,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2019-10-13 21:12:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10962. [2019-10-13 21:12:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10962 states. [2019-10-13 21:12:12,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10962 states to 10962 states and 17435 transitions. [2019-10-13 21:12:12,466 INFO L78 Accepts]: Start accepts. Automaton has 10962 states and 17435 transitions. Word has length 105 [2019-10-13 21:12:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:12,469 INFO L462 AbstractCegarLoop]: Abstraction has 10962 states and 17435 transitions. [2019-10-13 21:12:12,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 10962 states and 17435 transitions. [2019-10-13 21:12:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 21:12:12,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:12,471 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:12,472 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1061987221, now seen corresponding path program 1 times [2019-10-13 21:12:12,472 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:12,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706405126] [2019-10-13 21:12:12,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:12:12,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706405126] [2019-10-13 21:12:12,639 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:12,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:12,640 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976556596] [2019-10-13 21:12:12,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:12,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:12,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:12,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:12,643 INFO L87 Difference]: Start difference. First operand 10962 states and 17435 transitions. Second operand 7 states. [2019-10-13 21:12:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:16,315 INFO L93 Difference]: Finished difference Result 32902 states and 54000 transitions. [2019-10-13 21:12:16,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:16,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 21:12:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:16,492 INFO L225 Difference]: With dead ends: 32902 [2019-10-13 21:12:16,492 INFO L226 Difference]: Without dead ends: 21974 [2019-10-13 21:12:16,538 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:16,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21974 states. [2019-10-13 21:12:17,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21974 to 21788. [2019-10-13 21:12:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21788 states.