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_spec14_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:23,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:23,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:23,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:23,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:23,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:23,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:23,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:23,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:23,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:23,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:23,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:23,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:23,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:23,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:23,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:23,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:23,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:23,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:23,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:23,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:23,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:23,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:23,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:23,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:23,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:23,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:23,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:23,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:23,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:23,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:23,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:23,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:23,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:23,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:23,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:23,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:23,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:23,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:23,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:23,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:23,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:02:23,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:23,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:23,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:23,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:23,142 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:23,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:23,143 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:23,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:23,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:23,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:23,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:23,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:23,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:23,146 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:23,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:23,147 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:23,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:23,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:23,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:23,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:23,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:23,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:23,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:23,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:23,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:23,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:23,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:23,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:23,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:02:23,496 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:23,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:23,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:23,514 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:23,514 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:23,515 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c [2019-10-13 23:02:23,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f2f3535/4d2d4872322649ab936e7bc5cb57733d/FLAG5e2fbee22 [2019-10-13 23:02:24,234 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:24,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c [2019-10-13 23:02:24,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f2f3535/4d2d4872322649ab936e7bc5cb57733d/FLAG5e2fbee22 [2019-10-13 23:02:24,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f2f3535/4d2d4872322649ab936e7bc5cb57733d [2019-10-13 23:02:24,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:24,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:24,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:24,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:24,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:24,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:24,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b193a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:24, skipping insertion in model container [2019-10-13 23:02:24,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:24" (1/1) ... [2019-10-13 23:02:24,471 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:24,562 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:25,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:25,251 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:25,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:25,508 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:25,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25 WrapperNode [2019-10-13 23:02:25,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:25,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:25,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:25,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:25,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (1/1) ... [2019-10-13 23:02:25,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (1/1) ... [2019-10-13 23:02:25,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (1/1) ... [2019-10-13 23:02:25,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (1/1) ... [2019-10-13 23:02:25,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (1/1) ... [2019-10-13 23:02:25,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (1/1) ... [2019-10-13 23:02:25,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (1/1) ... [2019-10-13 23:02:25,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:25,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:25,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:25,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:25,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:02:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:02:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:02:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:02:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:02:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:02:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:02:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:25,818 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:02:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:02:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:02:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:02:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:02:25,819 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:25,823 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:30,420 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:30,420 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:30,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:30 BoogieIcfgContainer [2019-10-13 23:02:30,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:30,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:30,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:30,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:30,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:24" (1/3) ... [2019-10-13 23:02:30,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f872fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:30, skipping insertion in model container [2019-10-13 23:02:30,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:25" (2/3) ... [2019-10-13 23:02:30,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f872fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:30, skipping insertion in model container [2019-10-13 23:02:30,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:30" (3/3) ... [2019-10-13 23:02:30,431 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product27.cil.c [2019-10-13 23:02:30,441 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:30,452 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:30,464 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:30,508 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:30,508 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:30,508 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:30,509 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:30,509 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:30,509 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:30,509 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:30,509 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states. [2019-10-13 23:02:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-13 23:02:30,573 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:30,574 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:30,576 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:30,583 INFO L82 PathProgramCache]: Analyzing trace with hash 172227344, now seen corresponding path program 1 times [2019-10-13 23:02:30,592 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:30,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549400085] [2019-10-13 23:02:30,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:30,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:30,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:31,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549400085] [2019-10-13 23:02:31,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:31,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:31,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137279231] [2019-10-13 23:02:31,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:31,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:31,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:31,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:31,295 INFO L87 Difference]: Start difference. First operand 547 states. Second operand 7 states. [2019-10-13 23:02:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:32,765 INFO L93 Difference]: Finished difference Result 969 states and 1426 transitions. [2019-10-13 23:02:32,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:02:32,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-13 23:02:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:32,791 INFO L225 Difference]: With dead ends: 969 [2019-10-13 23:02:32,791 INFO L226 Difference]: Without dead ends: 544 [2019-10-13 23:02:32,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-13 23:02:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2019-10-13 23:02:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-13 23:02:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 770 transitions. [2019-10-13 23:02:32,927 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 770 transitions. Word has length 110 [2019-10-13 23:02:32,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:32,928 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 770 transitions. [2019-10-13 23:02:32,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 770 transitions. [2019-10-13 23:02:32,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-13 23:02:32,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:32,940 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:32,940 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:32,942 INFO L82 PathProgramCache]: Analyzing trace with hash -115405177, now seen corresponding path program 1 times [2019-10-13 23:02:32,942 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:32,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896136951] [2019-10-13 23:02:32,943 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:32,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:32,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-10-13 23:02:33,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896136951] [2019-10-13 23:02:33,243 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:33,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:33,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737604896] [2019-10-13 23:02:33,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:33,249 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:33,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:33,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:33,249 INFO L87 Difference]: Start difference. First operand 538 states and 770 transitions. Second operand 5 states. [2019-10-13 23:02:33,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:33,307 INFO L93 Difference]: Finished difference Result 1051 states and 1519 transitions. [2019-10-13 23:02:33,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:33,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2019-10-13 23:02:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:33,313 INFO L225 Difference]: With dead ends: 1051 [2019-10-13 23:02:33,314 INFO L226 Difference]: Without dead ends: 544 [2019-10-13 23:02:33,318 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-13 23:02:33,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-10-13 23:02:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-10-13 23:02:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 776 transitions. [2019-10-13 23:02:33,381 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 776 transitions. Word has length 211 [2019-10-13 23:02:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:33,382 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 776 transitions. [2019-10-13 23:02:33,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 776 transitions. [2019-10-13 23:02:33,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 23:02:33,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:33,396 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:33,397 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:33,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:33,397 INFO L82 PathProgramCache]: Analyzing trace with hash 52849665, now seen corresponding path program 1 times [2019-10-13 23:02:33,397 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:33,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711813471] [2019-10-13 23:02:33,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:33,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:33,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-10-13 23:02:33,735 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711813471] [2019-10-13 23:02:33,736 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578196481] [2019-10-13 23:02:33,736 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 23:02:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:34,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:34,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 23:02:34,473 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-10-13 23:02:34,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:34,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:02:34,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134190090] [2019-10-13 23:02:34,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:34,807 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:34,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:34,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:02:34,808 INFO L87 Difference]: Start difference. First operand 544 states and 776 transitions. Second operand 4 states. [2019-10-13 23:02:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:35,023 INFO L93 Difference]: Finished difference Result 1096 states and 1603 transitions. [2019-10-13 23:02:35,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:35,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 216 [2019-10-13 23:02:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:35,029 INFO L225 Difference]: With dead ends: 1096 [2019-10-13 23:02:35,030 INFO L226 Difference]: Without dead ends: 583 [2019-10-13 23:02:35,033 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 431 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:02:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-10-13 23:02:35,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2019-10-13 23:02:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-10-13 23:02:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 849 transitions. [2019-10-13 23:02:35,100 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 849 transitions. Word has length 216 [2019-10-13 23:02:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:35,102 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 849 transitions. [2019-10-13 23:02:35,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 849 transitions. [2019-10-13 23:02:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-13 23:02:35,111 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:35,112 INFO L380 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:35,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:35,321 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:35,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1118436342, now seen corresponding path program 1 times [2019-10-13 23:02:35,321 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:35,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62256069] [2019-10-13 23:02:35,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2019-10-13 23:02:35,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62256069] [2019-10-13 23:02:35,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259451104] [2019-10-13 23:02:35,812 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 23:02:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:36,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 3682 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:36,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-10-13 23:02:36,650 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2019-10-13 23:02:36,982 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:36,982 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 13 [2019-10-13 23:02:36,982 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413858522] [2019-10-13 23:02:36,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:36,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:36,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:36,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:02:36,984 INFO L87 Difference]: Start difference. First operand 583 states and 849 transitions. Second operand 4 states. [2019-10-13 23:02:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:37,213 INFO L93 Difference]: Finished difference Result 1174 states and 1748 transitions. [2019-10-13 23:02:37,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:37,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 282 [2019-10-13 23:02:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:37,222 INFO L225 Difference]: With dead ends: 1174 [2019-10-13 23:02:37,222 INFO L226 Difference]: Without dead ends: 622 [2019-10-13 23:02:37,226 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 567 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:02:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-13 23:02:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-13 23:02:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-13 23:02:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 922 transitions. [2019-10-13 23:02:37,269 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 922 transitions. Word has length 282 [2019-10-13 23:02:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:37,271 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 922 transitions. [2019-10-13 23:02:37,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 922 transitions. [2019-10-13 23:02:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-13 23:02:37,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:37,282 INFO L380 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:37,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:37,492 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:37,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2067790246, now seen corresponding path program 1 times [2019-10-13 23:02:37,493 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:37,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722314711] [2019-10-13 23:02:37,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:37,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-10-13 23:02:37,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722314711] [2019-10-13 23:02:37,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865860282] [2019-10-13 23:02:37,927 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 23:02:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:38,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 3686 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:38,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2019-10-13 23:02:38,759 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2019-10-13 23:02:39,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:39,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 13 [2019-10-13 23:02:39,147 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859241195] [2019-10-13 23:02:39,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:39,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:39,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:39,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:02:39,149 INFO L87 Difference]: Start difference. First operand 622 states and 922 transitions. Second operand 4 states. [2019-10-13 23:02:39,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:39,360 INFO L93 Difference]: Finished difference Result 1252 states and 1893 transitions. [2019-10-13 23:02:39,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:39,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2019-10-13 23:02:39,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:39,366 INFO L225 Difference]: With dead ends: 1252 [2019-10-13 23:02:39,366 INFO L226 Difference]: Without dead ends: 661 [2019-10-13 23:02:39,369 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:02:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-10-13 23:02:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2019-10-13 23:02:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2019-10-13 23:02:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 995 transitions. [2019-10-13 23:02:39,399 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 995 transitions. Word has length 286 [2019-10-13 23:02:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:39,400 INFO L462 AbstractCegarLoop]: Abstraction has 661 states and 995 transitions. [2019-10-13 23:02:39,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 995 transitions. [2019-10-13 23:02:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 23:02:39,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:39,405 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2019-10-13 23:02:39,614 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:39,614 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:39,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:39,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1925505400, now seen corresponding path program 1 times [2019-10-13 23:02:39,616 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:39,616 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701074550] [2019-10-13 23:02:39,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:39,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:39,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 23:02:39,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701074550] [2019-10-13 23:02:39,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298827544] [2019-10-13 23:02:39,833 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 23:02:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:40,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:40,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 23:02:40,549 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 23:02:40,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:40,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:40,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584293270] [2019-10-13 23:02:40,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:40,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:40,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:40,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:40,821 INFO L87 Difference]: Start difference. First operand 661 states and 995 transitions. Second operand 4 states. [2019-10-13 23:02:41,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:41,033 INFO L93 Difference]: Finished difference Result 1330 states and 2038 transitions. [2019-10-13 23:02:41,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:41,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2019-10-13 23:02:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:41,039 INFO L225 Difference]: With dead ends: 1330 [2019-10-13 23:02:41,039 INFO L226 Difference]: Without dead ends: 700 [2019-10-13 23:02:41,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2019-10-13 23:02:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2019-10-13 23:02:41,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-13 23:02:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1068 transitions. [2019-10-13 23:02:41,070 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1068 transitions. Word has length 167 [2019-10-13 23:02:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:41,071 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 1068 transitions. [2019-10-13 23:02:41,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1068 transitions. [2019-10-13 23:02:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-13 23:02:41,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:41,078 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:41,278 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:41,279 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1015124303, now seen corresponding path program 1 times [2019-10-13 23:02:41,280 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:41,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443637564] [2019-10-13 23:02:41,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:41,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-13 23:02:41,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443637564] [2019-10-13 23:02:41,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649473186] [2019-10-13 23:02:41,468 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 23:02:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:42,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 3303 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 23:02:42,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-10-13 23:02:42,175 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-10-13 23:02:42,524 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:42,525 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6] total 13 [2019-10-13 23:02:42,525 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782331257] [2019-10-13 23:02:42,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:02:42,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:42,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:02:42,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:02:42,528 INFO L87 Difference]: Start difference. First operand 700 states and 1068 transitions. Second operand 9 states. [2019-10-13 23:02:46,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:46,281 INFO L93 Difference]: Finished difference Result 1969 states and 3063 transitions. [2019-10-13 23:02:46,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:46,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2019-10-13 23:02:46,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:46,293 INFO L225 Difference]: With dead ends: 1969 [2019-10-13 23:02:46,293 INFO L226 Difference]: Without dead ends: 1300 [2019-10-13 23:02:46,297 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:02:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2019-10-13 23:02:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1261. [2019-10-13 23:02:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2019-10-13 23:02:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1968 transitions. [2019-10-13 23:02:46,364 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1968 transitions. Word has length 230 [2019-10-13 23:02:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:46,364 INFO L462 AbstractCegarLoop]: Abstraction has 1261 states and 1968 transitions. [2019-10-13 23:02:46,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:02:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1968 transitions. [2019-10-13 23:02:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 23:02:46,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:46,371 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:46,609 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:46,610 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:46,611 INFO L82 PathProgramCache]: Analyzing trace with hash -282558234, now seen corresponding path program 1 times [2019-10-13 23:02:46,612 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:46,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812107858] [2019-10-13 23:02:46,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:46,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:46,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:02:46,828 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812107858] [2019-10-13 23:02:46,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309348600] [2019-10-13 23:02:46,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:47,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-13 23:02:47,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 23:02:47,532 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:47,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:02:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-13 23:02:47,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2055276760] [2019-10-13 23:02:47,918 INFO L162 IcfgInterpreter]: Started Sifa with 131 locations of interest [2019-10-13 23:02:47,919 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:02:47,929 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:02:47,952 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:02:47,953 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs