java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:49,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:49,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:49,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:49,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:49,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:49,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:49,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:49,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:49,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:49,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:49,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:49,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:49,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:49,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:49,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:49,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:49,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:49,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:49,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:49,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:49,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:49,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:49,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:49,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:49,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:49,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:49,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:49,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:49,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:49,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:49,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:49,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:49,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:49,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:49,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:49,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:49,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:49,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:49,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:49,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:49,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:49,128 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:49,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:49,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:49,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:49,130 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:49,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:49,130 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:49,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:49,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:49,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:49,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:49,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:49,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:49,132 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:49,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:49,132 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:49,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:49,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:49,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:49,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:49,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:49,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:49,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:49,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:49,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:49,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:49,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:49,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:49,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:49,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:49,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:49,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:49,442 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:49,443 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:49,443 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-10-13 23:04:49,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5bd2036/3c466c9db96948d9b22916d31fe40289/FLAG7870a99f8 [2019-10-13 23:04:50,208 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:50,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-10-13 23:04:50,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5bd2036/3c466c9db96948d9b22916d31fe40289/FLAG7870a99f8 [2019-10-13 23:04:50,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5bd2036/3c466c9db96948d9b22916d31fe40289 [2019-10-13 23:04:50,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:50,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:50,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:50,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:50,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:50,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:50" (1/1) ... [2019-10-13 23:04:50,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9aa9a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:50, skipping insertion in model container [2019-10-13 23:04:50,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:50" (1/1) ... [2019-10-13 23:04:50,366 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:50,449 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:51,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:51,212 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:51,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:51,494 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:51,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51 WrapperNode [2019-10-13 23:04:51,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:51,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:51,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:51,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:51,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (1/1) ... [2019-10-13 23:04:51,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:51,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:51,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:51,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:51,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:51,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:51,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:51,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:51,800 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:51,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:51,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:51,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:51,802 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:51,802 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:51,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:51,803 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:51,804 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:51,804 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:51,804 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:51,805 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:51,805 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:51,810 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:51,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:51,815 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:51,815 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:51,815 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:51,815 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:51,815 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:51,816 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:51,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:51,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:51,819 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:51,820 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:51,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:51,820 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:51,821 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:51,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:51,824 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:51,825 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:51,826 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:51,827 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:51,828 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 23:04:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 23:04:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:56,904 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:56,904 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:56,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:56 BoogieIcfgContainer [2019-10-13 23:04:56,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:56,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:56,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:56,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:56,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:50" (1/3) ... [2019-10-13 23:04:56,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30585c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:56, skipping insertion in model container [2019-10-13 23:04:56,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:51" (2/3) ... [2019-10-13 23:04:56,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30585c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:56, skipping insertion in model container [2019-10-13 23:04:56,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:56" (3/3) ... [2019-10-13 23:04:56,914 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2019-10-13 23:04:56,925 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:56,934 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:56,946 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:56,980 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:56,981 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:56,981 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:56,981 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:56,981 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:56,981 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:56,981 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:56,982 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states. [2019-10-13 23:04:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:57,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:57,042 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:57,044 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1194994142, now seen corresponding path program 1 times [2019-10-13 23:04:57,060 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:57,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550072148] [2019-10-13 23:04:57,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:57,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:57,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:57,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550072148] [2019-10-13 23:04:57,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56650638] [2019-10-13 23:04:57,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:58,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:04:58,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:04:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:58,604 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:04:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:04:58,781 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:04:58,781 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 23:04:58,781 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927919477] [2019-10-13 23:04:58,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:04:58,796 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:58,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:04:58,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:58,813 INFO L87 Difference]: Start difference. First operand 618 states. Second operand 3 states. [2019-10-13 23:04:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:59,103 INFO L93 Difference]: Finished difference Result 1376 states and 2085 transitions. [2019-10-13 23:04:59,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:04:59,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-13 23:04:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:59,141 INFO L225 Difference]: With dead ends: 1376 [2019-10-13 23:04:59,142 INFO L226 Difference]: Without dead ends: 890 [2019-10-13 23:04:59,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:59,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-10-13 23:04:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 877. [2019-10-13 23:04:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-10-13 23:04:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1312 transitions. [2019-10-13 23:04:59,311 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1312 transitions. Word has length 118 [2019-10-13 23:04:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:59,313 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1312 transitions. [2019-10-13 23:04:59,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:04:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1312 transitions. [2019-10-13 23:04:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:59,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:59,331 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:59,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:59,541 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:59,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:59,542 INFO L82 PathProgramCache]: Analyzing trace with hash -710931633, now seen corresponding path program 1 times [2019-10-13 23:04:59,543 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:59,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097887763] [2019-10-13 23:04:59,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:04:59,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097887763] [2019-10-13 23:04:59,915 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:59,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:59,916 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749728217] [2019-10-13 23:04:59,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:59,918 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:59,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:59,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:59,919 INFO L87 Difference]: Start difference. First operand 877 states and 1312 transitions. Second operand 7 states. [2019-10-13 23:05:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:02,953 INFO L93 Difference]: Finished difference Result 3352 states and 5172 transitions. [2019-10-13 23:05:02,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:02,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-13 23:05:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:02,996 INFO L225 Difference]: With dead ends: 3352 [2019-10-13 23:05:02,998 INFO L226 Difference]: Without dead ends: 2506 [2019-10-13 23:05:03,010 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2019-10-13 23:05:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2431. [2019-10-13 23:05:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-10-13 23:05:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3734 transitions. [2019-10-13 23:05:03,227 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3734 transitions. Word has length 119 [2019-10-13 23:05:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:03,227 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 3734 transitions. [2019-10-13 23:05:03,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3734 transitions. [2019-10-13 23:05:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:05:03,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:03,235 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:03,235 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:03,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:03,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2044796583, now seen corresponding path program 1 times [2019-10-13 23:05:03,236 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:03,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789343927] [2019-10-13 23:05:03,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:03,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789343927] [2019-10-13 23:05:03,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054907377] [2019-10-13 23:05:03,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:04,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:04,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:04,246 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:04,399 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:04,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-13 23:05:04,399 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669959721] [2019-10-13 23:05:04,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:04,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:04,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:04,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:04,403 INFO L87 Difference]: Start difference. First operand 2431 states and 3734 transitions. Second operand 4 states. [2019-10-13 23:05:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:04,586 INFO L93 Difference]: Finished difference Result 4648 states and 7207 transitions. [2019-10-13 23:05:04,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:05:04,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 23:05:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:04,607 INFO L225 Difference]: With dead ends: 4648 [2019-10-13 23:05:04,607 INFO L226 Difference]: Without dead ends: 2248 [2019-10-13 23:05:04,624 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2019-10-13 23:05:04,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2198. [2019-10-13 23:05:04,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2019-10-13 23:05:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3341 transitions. [2019-10-13 23:05:04,889 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3341 transitions. Word has length 120 [2019-10-13 23:05:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:04,889 INFO L462 AbstractCegarLoop]: Abstraction has 2198 states and 3341 transitions. [2019-10-13 23:05:04,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3341 transitions. [2019-10-13 23:05:04,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:04,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:04,895 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:05,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:05,116 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:05,116 INFO L82 PathProgramCache]: Analyzing trace with hash 604184811, now seen corresponding path program 1 times [2019-10-13 23:05:05,117 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:05,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099738720] [2019-10-13 23:05:05,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:05,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:05,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:05,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099738720] [2019-10-13 23:05:05,425 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343404350] [2019-10-13 23:05:05,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:06,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:06,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:06,162 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:06,330 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:06,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 23:05:06,331 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816661909] [2019-10-13 23:05:06,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:06,333 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:06,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:06,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:05:06,333 INFO L87 Difference]: Start difference. First operand 2198 states and 3341 transitions. Second operand 3 states. [2019-10-13 23:05:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:06,558 INFO L93 Difference]: Finished difference Result 5514 states and 8531 transitions. [2019-10-13 23:05:06,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:06,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:05:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:06,674 INFO L225 Difference]: With dead ends: 5514 [2019-10-13 23:05:06,675 INFO L226 Difference]: Without dead ends: 3347 [2019-10-13 23:05:06,688 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:05:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2019-10-13 23:05:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3262. [2019-10-13 23:05:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2019-10-13 23:05:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4986 transitions. [2019-10-13 23:05:06,865 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4986 transitions. Word has length 119 [2019-10-13 23:05:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:06,866 INFO L462 AbstractCegarLoop]: Abstraction has 3262 states and 4986 transitions. [2019-10-13 23:05:06,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4986 transitions. [2019-10-13 23:05:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:05:06,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:06,872 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:07,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:07,080 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:07,080 INFO L82 PathProgramCache]: Analyzing trace with hash 979559282, now seen corresponding path program 1 times [2019-10-13 23:05:07,081 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:07,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783704623] [2019-10-13 23:05:07,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:07,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783704623] [2019-10-13 23:05:07,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54523597] [2019-10-13 23:05:07,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:07,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:05:07,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:07,997 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:08,170 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:08,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:08,396 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-13 23:05:08,396 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753901125] [2019-10-13 23:05:08,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:05:08,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:08,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:05:08,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:08,398 INFO L87 Difference]: Start difference. First operand 3262 states and 4986 transitions. Second operand 6 states. [2019-10-13 23:05:10,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:10,068 INFO L93 Difference]: Finished difference Result 8600 states and 13448 transitions. [2019-10-13 23:05:10,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:05:10,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-13 23:05:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:10,128 INFO L225 Difference]: With dead ends: 8600 [2019-10-13 23:05:10,128 INFO L226 Difference]: Without dead ends: 5369 [2019-10-13 23:05:10,171 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2019-10-13 23:05:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 5333. [2019-10-13 23:05:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5333 states. [2019-10-13 23:05:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 8047 transitions. [2019-10-13 23:05:10,459 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 8047 transitions. Word has length 120 [2019-10-13 23:05:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:10,459 INFO L462 AbstractCegarLoop]: Abstraction has 5333 states and 8047 transitions. [2019-10-13 23:05:10,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:05:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 8047 transitions. [2019-10-13 23:05:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:05:10,463 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:10,464 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:10,672 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:10,681 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:10,682 INFO L82 PathProgramCache]: Analyzing trace with hash 20604644, now seen corresponding path program 1 times [2019-10-13 23:05:10,682 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:10,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906689794] [2019-10-13 23:05:10,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:05:10,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906689794] [2019-10-13 23:05:10,948 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:10,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:10,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395568607] [2019-10-13 23:05:10,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:10,951 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:10,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:10,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:10,952 INFO L87 Difference]: Start difference. First operand 5333 states and 8047 transitions. Second operand 10 states. [2019-10-13 23:05:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:14,336 INFO L93 Difference]: Finished difference Result 18854 states and 29437 transitions. [2019-10-13 23:05:14,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:05:14,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-13 23:05:14,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:14,479 INFO L225 Difference]: With dead ends: 18854 [2019-10-13 23:05:14,479 INFO L226 Difference]: Without dead ends: 13552 [2019-10-13 23:05:14,543 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13552 states. [2019-10-13 23:05:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13552 to 13397. [2019-10-13 23:05:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13397 states. [2019-10-13 23:05:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 20653 transitions. [2019-10-13 23:05:15,221 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 20653 transitions. Word has length 125 [2019-10-13 23:05:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:15,222 INFO L462 AbstractCegarLoop]: Abstraction has 13397 states and 20653 transitions. [2019-10-13 23:05:15,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 20653 transitions. [2019-10-13 23:05:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:05:15,227 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:15,227 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:15,227 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:15,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:15,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1489652305, now seen corresponding path program 1 times [2019-10-13 23:05:15,228 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:15,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580987961] [2019-10-13 23:05:15,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:15,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:15,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:15,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580987961] [2019-10-13 23:05:15,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190580431] [2019-10-13 23:05:15,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:16,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 23:05:16,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 23:05:16,211 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:17,011 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-13 23:05:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:17,222 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:17,222 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-13 23:05:17,222 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005432074] [2019-10-13 23:05:17,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:17,223 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:17,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:17,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:05:17,224 INFO L87 Difference]: Start difference. First operand 13397 states and 20653 transitions. Second operand 7 states. [2019-10-13 23:05:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:19,660 INFO L93 Difference]: Finished difference Result 28266 states and 43618 transitions. [2019-10-13 23:05:19,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:05:19,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:05:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:19,765 INFO L225 Difference]: With dead ends: 28266 [2019-10-13 23:05:19,766 INFO L226 Difference]: Without dead ends: 14900 [2019-10-13 23:05:19,813 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:05:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14900 states. [2019-10-13 23:05:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14900 to 14853. [2019-10-13 23:05:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14853 states. [2019-10-13 23:05:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14853 states to 14853 states and 22650 transitions. [2019-10-13 23:05:20,474 INFO L78 Accepts]: Start accepts. Automaton has 14853 states and 22650 transitions. Word has length 131 [2019-10-13 23:05:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:20,476 INFO L462 AbstractCegarLoop]: Abstraction has 14853 states and 22650 transitions. [2019-10-13 23:05:20,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 14853 states and 22650 transitions. [2019-10-13 23:05:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:05:20,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:20,481 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:05:20,698 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:20,698 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash -797822282, now seen corresponding path program 1 times [2019-10-13 23:05:20,699 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:20,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767427740] [2019-10-13 23:05:20,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:20,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:20,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat