java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:19:31,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:19:31,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:19:31,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:19:31,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:19:31,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:19:31,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:19:31,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:19:31,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:19:31,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:19:31,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:19:31,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:19:31,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:19:31,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:19:31,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:19:31,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:19:31,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:19:31,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:19:31,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:19:31,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:19:31,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:19:31,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:19:31,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:19:31,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:19:31,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:19:31,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:19:31,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:19:31,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:19:31,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:19:31,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:19:31,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:19:31,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:19:31,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:19:31,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:19:31,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:19:31,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:19:31,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:19:31,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:19:31,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:19:31,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:19:31,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:19:31,921 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 [2019-10-07 14:19:31,940 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:19:31,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:19:31,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:19:31,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:19:31,943 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:19:31,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:19:31,943 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:19:31,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:19:31,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:19:31,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:19:31,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:19:31,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:19:31,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:19:31,946 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:19:31,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:19:31,946 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:19:31,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:19:31,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:19:31,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:19:31,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:19:31,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:19:31,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:19:31,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:19:31,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:19:31,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:19:31,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:19:31,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:19:31,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:19:31,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 14:19:32,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:19:32,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:19:32,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:19:32,240 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:19:32,241 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:19:32,241 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-10-07 14:19:32,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82bfc49e9/8498fb440cd54a9b9b3df820d5fcfbcf/FLAG116eb228e [2019-10-07 14:19:33,031 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:19:33,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c [2019-10-07 14:19:33,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82bfc49e9/8498fb440cd54a9b9b3df820d5fcfbcf/FLAG116eb228e [2019-10-07 14:19:33,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82bfc49e9/8498fb440cd54a9b9b3df820d5fcfbcf [2019-10-07 14:19:33,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:19:33,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:19:33,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:19:33,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:19:33,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:19:33,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:19:33" (1/1) ... [2019-10-07 14:19:33,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:33, skipping insertion in model container [2019-10-07 14:19:33,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:19:33" (1/1) ... [2019-10-07 14:19:33,229 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:19:33,314 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:19:34,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:19:34,098 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:19:34,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:19:34,278 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:19:34,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34 WrapperNode [2019-10-07 14:19:34,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:19:34,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:19:34,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:19:34,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:19:34,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (1/1) ... [2019-10-07 14:19:34,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (1/1) ... [2019-10-07 14:19:34,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (1/1) ... [2019-10-07 14:19:34,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (1/1) ... [2019-10-07 14:19:34,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (1/1) ... [2019-10-07 14:19:34,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (1/1) ... [2019-10-07 14:19:34,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (1/1) ... [2019-10-07 14:19:34,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:19:34,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:19:34,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:19:34,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:19:34,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (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 [2019-10-07 14:19:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:19:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:19:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:19:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:19:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:19:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:19:34,558 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:19:34,558 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:19:34,558 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:19:34,558 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 14:19:34,559 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:19:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:19:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:19:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:19:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:19:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:19:34,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:19:34,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:19:34,564 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:19:34,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:19:34,564 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:19:34,565 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:19:34,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:19:34,566 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:19:34,566 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:19:34,566 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:19:34,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:19:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:19:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-07 14:19:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:19:34,567 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-07 14:19:34,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:19:34,568 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:19:34,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:19:34,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:19:34,568 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:19:34,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:19:34,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:19:34,569 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:19:34,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:19:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:19:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:19:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:19:34,570 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:19:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:19:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:19:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:19:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:19:34,571 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:19:34,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:19:34,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:19:34,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:19:34,572 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:19:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:19:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:19:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:19:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:19:34,574 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:19:34,574 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:19:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:19:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:19:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:19:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:19:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:19:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:19:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:19:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:19:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:19:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:19:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:19:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:19:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:19:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:19:34,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:19:34,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:19:34,579 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:19:34,580 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:19:34,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:19:34,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:19:34,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:19:34,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:19:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:19:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:19:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:19:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:19:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:19:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:19:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:19:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:19:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:19:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:19:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:19:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:19:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:19:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:19:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:19:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:19:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:19:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:19:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:19:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:19:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:19:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:19:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:19:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:19:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:19:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:19:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:19:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 14:19:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:19:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:19:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:19:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:19:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:19:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:19:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:19:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:19:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:19:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:19:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:19:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:19:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:19:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-07 14:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:19:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-07 14:19:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:19:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:19:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:19:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:19:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:19:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:19:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:19:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:19:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:19:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:19:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:19:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:19:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:19:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:19:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:19:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:19:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:19:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:19:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:19:34,614 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:19:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:19:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:19:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:19:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:19:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:19:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:19:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:19:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:19:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:19:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:19:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:19:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:19:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:19:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:19:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:19:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:19:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:19:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:19:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:19:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:19:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:19:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:19:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:19:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:19:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:19:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:19:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:19:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:19:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:19:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:19:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:19:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:19:39,819 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:19:39,820 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:19:39,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:19:39 BoogieIcfgContainer [2019-10-07 14:19:39,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:19:39,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:19:39,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:19:39,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:19:39,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:19:33" (1/3) ... [2019-10-07 14:19:39,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f60c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:19:39, skipping insertion in model container [2019-10-07 14:19:39,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:19:34" (2/3) ... [2019-10-07 14:19:39,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f60c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:19:39, skipping insertion in model container [2019-10-07 14:19:39,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:19:39" (3/3) ... [2019-10-07 14:19:39,829 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2019-10-07 14:19:39,839 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:19:39,849 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:19:39,861 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:19:39,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:19:39,894 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:19:39,894 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:19:39,894 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:19:39,894 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:19:39,894 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:19:39,895 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:19:39,895 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:19:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2019-10-07 14:19:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-07 14:19:39,940 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:39,941 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:39,943 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:39,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:39,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1105412057, now seen corresponding path program 1 times [2019-10-07 14:19:39,959 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:39,959 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:39,960 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:39,960 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:19:40,531 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:40,531 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:19:40,532 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 14:19:40,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 14:19:40,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 14:19:40,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:19:40,548 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 2 states. [2019-10-07 14:19:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:40,617 INFO L93 Difference]: Finished difference Result 488 states and 723 transitions. [2019-10-07 14:19:40,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 14:19:40,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-07 14:19:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:40,659 INFO L225 Difference]: With dead ends: 488 [2019-10-07 14:19:40,660 INFO L226 Difference]: Without dead ends: 454 [2019-10-07 14:19:40,666 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:19:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-10-07 14:19:40,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2019-10-07 14:19:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-10-07 14:19:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 672 transitions. [2019-10-07 14:19:40,798 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 672 transitions. Word has length 74 [2019-10-07 14:19:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:40,801 INFO L462 AbstractCegarLoop]: Abstraction has 454 states and 672 transitions. [2019-10-07 14:19:40,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 14:19:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 672 transitions. [2019-10-07 14:19:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-07 14:19:40,806 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:40,807 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:40,807 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:40,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1603361045, now seen corresponding path program 1 times [2019-10-07 14:19:40,808 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:40,808 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:40,808 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:40,808 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:40,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:19:41,107 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:41,107 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:19:41,107 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 14:19:41,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:19:41,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:19:41,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:19:41,113 INFO L87 Difference]: Start difference. First operand 454 states and 672 transitions. Second operand 6 states. [2019-10-07 14:19:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:44,407 INFO L93 Difference]: Finished difference Result 1382 states and 2118 transitions. [2019-10-07 14:19:44,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:19:44,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-07 14:19:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:44,416 INFO L225 Difference]: With dead ends: 1382 [2019-10-07 14:19:44,416 INFO L226 Difference]: Without dead ends: 970 [2019-10-07 14:19:44,423 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:19:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2019-10-07 14:19:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 875. [2019-10-07 14:19:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2019-10-07 14:19:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1344 transitions. [2019-10-07 14:19:44,605 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1344 transitions. Word has length 75 [2019-10-07 14:19:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:44,606 INFO L462 AbstractCegarLoop]: Abstraction has 875 states and 1344 transitions. [2019-10-07 14:19:44,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:19:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1344 transitions. [2019-10-07 14:19:44,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-07 14:19:44,616 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:44,616 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:44,616 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:44,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:44,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1284134923, now seen corresponding path program 1 times [2019-10-07 14:19:44,617 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:44,617 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:44,617 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:44,618 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:19:45,033 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:45,033 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:19:45,033 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-07 14:19:45,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 14:19:45,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 14:19:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:19:45,038 INFO L87 Difference]: Start difference. First operand 875 states and 1344 transitions. Second operand 12 states. [2019-10-07 14:19:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:53,035 INFO L93 Difference]: Finished difference Result 2654 states and 4095 transitions. [2019-10-07 14:19:53,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-07 14:19:53,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2019-10-07 14:19:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:53,049 INFO L225 Difference]: With dead ends: 2654 [2019-10-07 14:19:53,049 INFO L226 Difference]: Without dead ends: 1821 [2019-10-07 14:19:53,055 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-07 14:19:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2019-10-07 14:19:53,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1762. [2019-10-07 14:19:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2019-10-07 14:19:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2698 transitions. [2019-10-07 14:19:53,191 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2698 transitions. Word has length 122 [2019-10-07 14:19:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:53,193 INFO L462 AbstractCegarLoop]: Abstraction has 1762 states and 2698 transitions. [2019-10-07 14:19:53,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 14:19:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2698 transitions. [2019-10-07 14:19:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-07 14:19:53,200 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:53,201 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:53,201 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:53,201 INFO L82 PathProgramCache]: Analyzing trace with hash -340449060, now seen corresponding path program 1 times [2019-10-07 14:19:53,202 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:53,202 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:53,202 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:53,202 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:19:53,443 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:53,443 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:19:53,444 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:19:53,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:19:53,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:19:53,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:19:53,445 INFO L87 Difference]: Start difference. First operand 1762 states and 2698 transitions. Second operand 4 states. [2019-10-07 14:19:55,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:55,464 INFO L93 Difference]: Finished difference Result 4521 states and 7073 transitions. [2019-10-07 14:19:55,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:19:55,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-07 14:19:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:55,496 INFO L225 Difference]: With dead ends: 4521 [2019-10-07 14:19:55,496 INFO L226 Difference]: Without dead ends: 2801 [2019-10-07 14:19:55,508 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:19:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2019-10-07 14:19:55,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2720. [2019-10-07 14:19:55,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2720 states. [2019-10-07 14:19:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4209 transitions. [2019-10-07 14:19:55,742 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4209 transitions. Word has length 123 [2019-10-07 14:19:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:55,746 INFO L462 AbstractCegarLoop]: Abstraction has 2720 states and 4209 transitions. [2019-10-07 14:19:55,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:19:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4209 transitions. [2019-10-07 14:19:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-07 14:19:55,750 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:55,750 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:55,751 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:55,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:55,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1965396766, now seen corresponding path program 1 times [2019-10-07 14:19:55,751 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:55,751 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:55,752 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:55,752 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:19:55,925 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:55,926 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:19:55,926 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:19:55,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:19:55,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:19:55,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:19:55,928 INFO L87 Difference]: Start difference. First operand 2720 states and 4209 transitions. Second operand 4 states. [2019-10-07 14:19:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:57,706 INFO L93 Difference]: Finished difference Result 7420 states and 11858 transitions. [2019-10-07 14:19:57,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:19:57,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-07 14:19:57,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:57,742 INFO L225 Difference]: With dead ends: 7420 [2019-10-07 14:19:57,742 INFO L226 Difference]: Without dead ends: 4743 [2019-10-07 14:19:57,757 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:19:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2019-10-07 14:19:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 4629. [2019-10-07 14:19:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4629 states. [2019-10-07 14:19:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7294 transitions. [2019-10-07 14:19:58,036 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7294 transitions. Word has length 124 [2019-10-07 14:19:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:58,038 INFO L462 AbstractCegarLoop]: Abstraction has 4629 states and 7294 transitions. [2019-10-07 14:19:58,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:19:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7294 transitions. [2019-10-07 14:19:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:19:58,046 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:58,047 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:58,047 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:58,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:58,048 INFO L82 PathProgramCache]: Analyzing trace with hash -799164194, now seen corresponding path program 1 times [2019-10-07 14:19:58,048 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:58,048 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:58,049 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:58,049 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:19:58,334 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:58,334 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:19:58,334 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:19:58,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:19:58,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:19:58,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:19:58,335 INFO L87 Difference]: Start difference. First operand 4629 states and 7294 transitions. Second operand 4 states. [2019-10-07 14:20:00,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:00,224 INFO L93 Difference]: Finished difference Result 13234 states and 21956 transitions. [2019-10-07 14:20:00,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:00,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-07 14:20:00,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:00,290 INFO L225 Difference]: With dead ends: 13234 [2019-10-07 14:20:00,290 INFO L226 Difference]: Without dead ends: 8650 [2019-10-07 14:20:00,321 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:20:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8650 states. [2019-10-07 14:20:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8650 to 8471. [2019-10-07 14:20:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8471 states. [2019-10-07 14:20:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8471 states to 8471 states and 13782 transitions. [2019-10-07 14:20:00,887 INFO L78 Accepts]: Start accepts. Automaton has 8471 states and 13782 transitions. Word has length 125 [2019-10-07 14:20:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:00,888 INFO L462 AbstractCegarLoop]: Abstraction has 8471 states and 13782 transitions. [2019-10-07 14:20:00,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:20:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states and 13782 transitions. [2019-10-07 14:20:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-07 14:20:00,893 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:00,893 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:00,893 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:00,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:00,894 INFO L82 PathProgramCache]: Analyzing trace with hash 994311076, now seen corresponding path program 1 times [2019-10-07 14:20:00,894 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:00,894 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:00,894 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:00,895 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:20:01,097 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:01,098 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:01,098 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:20:01,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:20:01,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:20:01,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:20:01,100 INFO L87 Difference]: Start difference. First operand 8471 states and 13782 transitions. Second operand 4 states. [2019-10-07 14:20:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:03,555 INFO L93 Difference]: Finished difference Result 24923 states and 44009 transitions. [2019-10-07 14:20:03,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:03,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-07 14:20:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:03,669 INFO L225 Difference]: With dead ends: 24923 [2019-10-07 14:20:03,669 INFO L226 Difference]: Without dead ends: 16501 [2019-10-07 14:20:03,722 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:20:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16501 states. [2019-10-07 14:20:05,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16501 to 16193. [2019-10-07 14:20:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16193 states. [2019-10-07 14:20:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16193 states to 16193 states and 27806 transitions. [2019-10-07 14:20:05,642 INFO L78 Accepts]: Start accepts. Automaton has 16193 states and 27806 transitions. Word has length 126 [2019-10-07 14:20:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:05,643 INFO L462 AbstractCegarLoop]: Abstraction has 16193 states and 27806 transitions. [2019-10-07 14:20:05,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:20:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 16193 states and 27806 transitions. [2019-10-07 14:20:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 14:20:05,647 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:05,647 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:05,648 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:05,648 INFO L82 PathProgramCache]: Analyzing trace with hash 757473504, now seen corresponding path program 1 times [2019-10-07 14:20:05,648 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:05,648 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:05,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:05,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:20:05,837 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:05,837 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:05,837 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:20:05,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:20:05,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:20:05,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:20:05,840 INFO L87 Difference]: Start difference. First operand 16193 states and 27806 transitions. Second operand 4 states. [2019-10-07 14:20:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:08,379 INFO L93 Difference]: Finished difference Result 48479 states and 94555 transitions. [2019-10-07 14:20:08,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:08,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-07 14:20:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:08,570 INFO L225 Difference]: With dead ends: 48479 [2019-10-07 14:20:08,570 INFO L226 Difference]: Without dead ends: 32331 [2019-10-07 14:20:08,639 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:20:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32331 states. [2019-10-07 14:20:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32331 to 31418. [2019-10-07 14:20:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31418 states. [2019-10-07 14:20:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31418 states to 31418 states and 57807 transitions. [2019-10-07 14:20:10,830 INFO L78 Accepts]: Start accepts. Automaton has 31418 states and 57807 transitions. Word has length 127 [2019-10-07 14:20:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:10,831 INFO L462 AbstractCegarLoop]: Abstraction has 31418 states and 57807 transitions. [2019-10-07 14:20:10,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:20:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 31418 states and 57807 transitions. [2019-10-07 14:20:10,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-07 14:20:10,841 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:10,841 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:10,842 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:10,842 INFO L82 PathProgramCache]: Analyzing trace with hash -784492147, now seen corresponding path program 1 times [2019-10-07 14:20:10,842 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:10,842 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:10,843 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:10,843 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-07 14:20:11,020 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:11,020 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:11,020 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:20:11,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:20:11,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:20:11,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:20:11,022 INFO L87 Difference]: Start difference. First operand 31418 states and 57807 transitions. Second operand 5 states. [2019-10-07 14:20:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:13,531 INFO L93 Difference]: Finished difference Result 63189 states and 122048 transitions. [2019-10-07 14:20:13,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:13,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2019-10-07 14:20:13,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:13,665 INFO L225 Difference]: With dead ends: 63189 [2019-10-07 14:20:13,666 INFO L226 Difference]: Without dead ends: 31814 [2019-10-07 14:20:13,744 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:20:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31814 states. [2019-10-07 14:20:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31814 to 31748. [2019-10-07 14:20:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31748 states. [2019-10-07 14:20:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31748 states to 31748 states and 58137 transitions. [2019-10-07 14:20:15,078 INFO L78 Accepts]: Start accepts. Automaton has 31748 states and 58137 transitions. Word has length 213 [2019-10-07 14:20:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:15,078 INFO L462 AbstractCegarLoop]: Abstraction has 31748 states and 58137 transitions. [2019-10-07 14:20:15,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:20:15,079 INFO L276 IsEmpty]: Start isEmpty. Operand 31748 states and 58137 transitions. [2019-10-07 14:20:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-07 14:20:15,087 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:15,087 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:15,088 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:15,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1077991244, now seen corresponding path program 1 times [2019-10-07 14:20:15,088 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:15,088 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:15,089 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:15,089 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:20:15,286 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:15,287 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:20:15,287 INFO L95 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 [2019-10-07 14:20:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:15,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 3702 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:20:16,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:20:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-07 14:20:16,116 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:20:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:20:16,695 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:20:16,695 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:20:16,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:20:16,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:20:16,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:20:16,697 INFO L87 Difference]: Start difference. First operand 31748 states and 58137 transitions. Second operand 4 states. [2019-10-07 14:20:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:18,551 INFO L93 Difference]: Finished difference Result 64740 states and 125182 transitions. [2019-10-07 14:20:18,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:18,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2019-10-07 14:20:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:18,831 INFO L225 Difference]: With dead ends: 64740 [2019-10-07 14:20:18,831 INFO L226 Difference]: Without dead ends: 33035 [2019-10-07 14:20:19,195 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 391 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:20:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33035 states. [2019-10-07 14:20:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33035 to 33035. [2019-10-07 14:20:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33035 states. [2019-10-07 14:20:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33035 states to 33035 states and 60546 transitions. [2019-10-07 14:20:22,797 INFO L78 Accepts]: Start accepts. Automaton has 33035 states and 60546 transitions. Word has length 196 [2019-10-07 14:20:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:22,798 INFO L462 AbstractCegarLoop]: Abstraction has 33035 states and 60546 transitions. [2019-10-07 14:20:22,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:20:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 33035 states and 60546 transitions. [2019-10-07 14:20:22,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-07 14:20:22,812 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:22,813 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:23,030 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:20:23,031 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:23,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:23,031 INFO L82 PathProgramCache]: Analyzing trace with hash 801751280, now seen corresponding path program 1 times [2019-10-07 14:20:23,031 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:23,032 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:23,032 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:23,032 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:20:23,278 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:23,278 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:20:23,279 INFO L95 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 [2019-10-07 14:20:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:23,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 3707 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:20:23,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:20:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:20:24,034 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:20:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:20:24,524 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:20:24,524 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:20:24,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:20:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:20:24,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:24,526 INFO L87 Difference]: Start difference. First operand 33035 states and 60546 transitions. Second operand 4 states. [2019-10-07 14:20:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:27,257 INFO L93 Difference]: Finished difference Result 67314 states and 129966 transitions. [2019-10-07 14:20:27,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:27,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2019-10-07 14:20:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:27,437 INFO L225 Difference]: With dead ends: 67314 [2019-10-07 14:20:27,438 INFO L226 Difference]: Without dead ends: 34322 [2019-10-07 14:20:27,529 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 399 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:20:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34322 states. [2019-10-07 14:20:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34322 to 34322. [2019-10-07 14:20:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34322 states. [2019-10-07 14:20:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34322 states to 34322 states and 62955 transitions. [2019-10-07 14:20:29,051 INFO L78 Accepts]: Start accepts. Automaton has 34322 states and 62955 transitions. Word has length 201 [2019-10-07 14:20:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:29,051 INFO L462 AbstractCegarLoop]: Abstraction has 34322 states and 62955 transitions. [2019-10-07 14:20:29,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:20:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 34322 states and 62955 transitions. [2019-10-07 14:20:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-07 14:20:29,062 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:29,062 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:29,270 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:20:29,271 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash 191201616, now seen corresponding path program 1 times [2019-10-07 14:20:29,271 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:29,271 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:29,271 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:29,272 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-07 14:20:29,498 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:29,498 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:20:29,499 INFO L95 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 [2019-10-07 14:20:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:30,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 3711 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:20:30,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:20:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 14:20:30,337 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:20:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-07 14:20:30,823 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:20:30,823 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:20:30,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:20:30,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:20:30,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:30,825 INFO L87 Difference]: Start difference. First operand 34322 states and 62955 transitions. Second operand 4 states. [2019-10-07 14:20:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:31,824 INFO L93 Difference]: Finished difference Result 69888 states and 134750 transitions. [2019-10-07 14:20:31,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:31,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2019-10-07 14:20:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:31,972 INFO L225 Difference]: With dead ends: 69888 [2019-10-07 14:20:31,972 INFO L226 Difference]: Without dead ends: 35609 [2019-10-07 14:20:32,044 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 407 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:20:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35609 states. [2019-10-07 14:20:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35609 to 35609. [2019-10-07 14:20:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35609 states. [2019-10-07 14:20:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35609 states to 35609 states and 65364 transitions. [2019-10-07 14:20:34,975 INFO L78 Accepts]: Start accepts. Automaton has 35609 states and 65364 transitions. Word has length 205 [2019-10-07 14:20:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:34,976 INFO L462 AbstractCegarLoop]: Abstraction has 35609 states and 65364 transitions. [2019-10-07 14:20:34,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:20:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 35609 states and 65364 transitions. [2019-10-07 14:20:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-07 14:20:34,987 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:34,987 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:35,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:20:35,196 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:35,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:35,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1640256420, now seen corresponding path program 1 times [2019-10-07 14:20:35,197 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:35,197 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:35,197 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:35,198 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:35,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:20:35,391 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:35,391 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:20:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:20:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:36,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 3714 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:20:36,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:20:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:20:36,176 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:20:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:20:36,828 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:20:36,829 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:20:36,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:20:36,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:20:36,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:36,837 INFO L87 Difference]: Start difference. First operand 35609 states and 65364 transitions. Second operand 4 states. [2019-10-07 14:20:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:38,105 INFO L93 Difference]: Finished difference Result 72462 states and 139534 transitions. [2019-10-07 14:20:38,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:38,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2019-10-07 14:20:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:38,255 INFO L225 Difference]: With dead ends: 72462 [2019-10-07 14:20:38,255 INFO L226 Difference]: Without dead ends: 36896 [2019-10-07 14:20:38,331 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 413 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:20:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36896 states. [2019-10-07 14:20:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36896 to 36896. [2019-10-07 14:20:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36896 states. [2019-10-07 14:20:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36896 states to 36896 states and 67773 transitions. [2019-10-07 14:20:41,929 INFO L78 Accepts]: Start accepts. Automaton has 36896 states and 67773 transitions. Word has length 208 [2019-10-07 14:20:41,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:41,929 INFO L462 AbstractCegarLoop]: Abstraction has 36896 states and 67773 transitions. [2019-10-07 14:20:41,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:20:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 36896 states and 67773 transitions. [2019-10-07 14:20:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-07 14:20:41,935 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:41,936 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:42,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:20:42,138 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1511800854, now seen corresponding path program 1 times [2019-10-07 14:20:42,139 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:42,140 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:42,140 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:42,140 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-10-07 14:20:42,357 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:42,357 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:42,357 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:20:42,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:20:42,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:20:42,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:20:42,358 INFO L87 Difference]: Start difference. First operand 36896 states and 67773 transitions. Second operand 5 states. [2019-10-07 14:20:47,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:47,482 INFO L93 Difference]: Finished difference Result 120982 states and 237793 transitions. [2019-10-07 14:20:47,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:20:47,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2019-10-07 14:20:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:47,805 INFO L225 Difference]: With dead ends: 120982 [2019-10-07 14:20:47,805 INFO L226 Difference]: Without dead ends: 84129 [2019-10-07 14:20:47,881 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:47,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84129 states. [2019-10-07 14:20:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84129 to 82476. [2019-10-07 14:20:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82476 states. [2019-10-07 14:20:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82476 states to 82476 states and 159181 transitions. [2019-10-07 14:20:51,660 INFO L78 Accepts]: Start accepts. Automaton has 82476 states and 159181 transitions. Word has length 232 [2019-10-07 14:20:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:51,661 INFO L462 AbstractCegarLoop]: Abstraction has 82476 states and 159181 transitions. [2019-10-07 14:20:51,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:20:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 82476 states and 159181 transitions. [2019-10-07 14:20:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-07 14:20:51,666 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:51,666 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:51,667 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:51,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1065135945, now seen corresponding path program 1 times [2019-10-07 14:20:51,667 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:51,667 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:51,667 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:51,667 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-10-07 14:20:51,864 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:51,864 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:51,865 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:20:51,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:20:51,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:20:51,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:20:51,867 INFO L87 Difference]: Start difference. First operand 82476 states and 159181 transitions. Second operand 5 states. [2019-10-07 14:21:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:00,047 INFO L93 Difference]: Finished difference Result 263061 states and 554403 transitions. [2019-10-07 14:21:00,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:21:00,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2019-10-07 14:21:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:06,296 INFO L225 Difference]: With dead ends: 263061 [2019-10-07 14:21:06,297 INFO L226 Difference]: Without dead ends: 180628 [2019-10-07 14:21:06,471 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:21:06,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180628 states. [2019-10-07 14:21:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180628 to 177029. [2019-10-07 14:21:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177029 states. [2019-10-07 14:21:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177029 states to 177029 states and 363640 transitions. [2019-10-07 14:21:16,423 INFO L78 Accepts]: Start accepts. Automaton has 177029 states and 363640 transitions. Word has length 232 [2019-10-07 14:21:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:16,423 INFO L462 AbstractCegarLoop]: Abstraction has 177029 states and 363640 transitions. [2019-10-07 14:21:16,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:21:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 177029 states and 363640 transitions. [2019-10-07 14:21:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-07 14:21:16,431 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:16,432 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:21:16,432 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:16,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1977193445, now seen corresponding path program 1 times [2019-10-07 14:21:16,433 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:16,433 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:16,433 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:16,434 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-10-07 14:21:16,622 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:16,622 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:16,622 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:21:16,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:21:16,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:21:16,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:16,624 INFO L87 Difference]: Start difference. First operand 177029 states and 363640 transitions. Second operand 5 states. [2019-10-07 14:21:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:38,584 INFO L93 Difference]: Finished difference Result 562529 states and 1298660 transitions. [2019-10-07 14:21:38,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:21:38,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2019-10-07 14:21:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:42,389 INFO L225 Difference]: With dead ends: 562529 [2019-10-07 14:21:42,389 INFO L226 Difference]: Without dead ends: 385543 [2019-10-07 14:21:42,861 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:21:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385543 states. [2019-10-07 14:22:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385543 to 376760. [2019-10-07 14:22:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376760 states. [2019-10-07 14:22:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376760 states to 376760 states and 839446 transitions. [2019-10-07 14:22:26,625 INFO L78 Accepts]: Start accepts. Automaton has 376760 states and 839446 transitions. Word has length 232 [2019-10-07 14:22:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:26,625 INFO L462 AbstractCegarLoop]: Abstraction has 376760 states and 839446 transitions. [2019-10-07 14:22:26,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:22:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 376760 states and 839446 transitions. [2019-10-07 14:22:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-07 14:22:26,632 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:26,632 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:26,632 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:26,632 INFO L82 PathProgramCache]: Analyzing trace with hash -545722164, now seen corresponding path program 1 times [2019-10-07 14:22:26,633 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:26,633 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:26,633 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:26,633 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:22:26,806 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:26,806 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:22:26,806 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:22:26,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:22:26,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:22:26,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:22:26,812 INFO L87 Difference]: Start difference. First operand 376760 states and 839446 transitions. Second operand 4 states. [2019-10-07 14:22:58,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:58,781 INFO L93 Difference]: Finished difference Result 773679 states and 1915826 transitions. [2019-10-07 14:22:58,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:22:58,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2019-10-07 14:22:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:01,406 INFO L225 Difference]: With dead ends: 773679 [2019-10-07 14:23:01,407 INFO L226 Difference]: Without dead ends: 393114 [2019-10-07 14:23:04,111 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:23:04,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393114 states. [2019-10-07 14:23:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393114 to 393114. [2019-10-07 14:23:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393114 states. [2019-10-07 14:24:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393114 states to 393114 states and 848104 transitions. [2019-10-07 14:24:04,311 INFO L78 Accepts]: Start accepts. Automaton has 393114 states and 848104 transitions. Word has length 210 [2019-10-07 14:24:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:04,311 INFO L462 AbstractCegarLoop]: Abstraction has 393114 states and 848104 transitions. [2019-10-07 14:24:04,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:24:04,312 INFO L276 IsEmpty]: Start isEmpty. Operand 393114 states and 848104 transitions. [2019-10-07 14:24:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-07 14:24:04,316 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:04,317 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:04,317 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:04,317 INFO L82 PathProgramCache]: Analyzing trace with hash 581513661, now seen corresponding path program 1 times [2019-10-07 14:24:04,317 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:04,317 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:04,317 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:04,318 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:24:04,530 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:04,530 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:24:04,530 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 14:24:04,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:24:04,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:24:04,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:24:04,531 INFO L87 Difference]: Start difference. First operand 393114 states and 848104 transitions. Second operand 9 states. [2019-10-07 14:24:08,974 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 10 [2019-10-07 14:25:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:05,614 INFO L93 Difference]: Finished difference Result 1187071 states and 2890304 transitions. [2019-10-07 14:25:05,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-07 14:25:05,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2019-10-07 14:25:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:11,904 INFO L225 Difference]: With dead ends: 1187071 [2019-10-07 14:25:11,905 INFO L226 Difference]: Without dead ends: 685780 [2019-10-07 14:25:29,825 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2019-10-07 14:25:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685780 states.