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_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:10,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:10,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:10,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:10,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:10,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:10,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:10,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:10,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:10,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:10,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:10,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:10,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:10,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:10,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:10,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:10,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:10,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:10,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:10,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:10,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:10,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:10,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:10,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:10,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:10,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:10,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:10,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:10,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:10,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:10,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:10,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:10,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:10,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:10,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:10,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:10,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:10,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:10,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:10,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:10,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:10,288 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 [2019-10-15 03:09:10,318 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:10,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:10,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:10,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:10,320 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:10,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:10,320 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:10,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:10,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:10,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:10,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:10,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:10,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:10,322 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:10,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:10,322 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:10,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:10,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:10,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:10,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:10,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:10,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:10,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:10,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:10,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:10,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:10,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:10,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:10,325 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 [2019-10-15 03:09:10,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:10,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:10,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:10,625 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:10,626 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:10,627 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c [2019-10-15 03:09:10,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9799294c/220c866c5b674334a235b46498ff7080/FLAG5e3331e38 [2019-10-15 03:09:11,387 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:11,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c [2019-10-15 03:09:11,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9799294c/220c866c5b674334a235b46498ff7080/FLAG5e3331e38 [2019-10-15 03:09:11,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9799294c/220c866c5b674334a235b46498ff7080 [2019-10-15 03:09:11,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:11,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:11,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:11,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:11,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:11,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:11" (1/1) ... [2019-10-15 03:09:11,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcfe847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:11, skipping insertion in model container [2019-10-15 03:09:11,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:11" (1/1) ... [2019-10-15 03:09:11,587 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:11,659 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:12,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:12,377 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:12,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:12,619 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:12,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12 WrapperNode [2019-10-15 03:09:12,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:12,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:12,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:12,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:12,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:12,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:12,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:12,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:12,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (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 [2019-10-15 03:09:12,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:12,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:12,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:12,883 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:12,883 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:12,884 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:12,884 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:12,884 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:12,884 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:12,885 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:12,885 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:12,885 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:12,885 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:12,886 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:12,886 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:12,886 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:12,886 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:12,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:12,887 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:12,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:12,887 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:12,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:12,893 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:09:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:09:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:12,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:12,899 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:12,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:12,907 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:12,908 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:09:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:09:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:12,911 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:12,912 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:12,913 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:12,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:18,376 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:18,376 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:18,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:18 BoogieIcfgContainer [2019-10-15 03:09:18,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:18,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:18,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:18,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:18,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:11" (1/3) ... [2019-10-15 03:09:18,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e5c4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:18, skipping insertion in model container [2019-10-15 03:09:18,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12" (2/3) ... [2019-10-15 03:09:18,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e5c4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:18, skipping insertion in model container [2019-10-15 03:09:18,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:18" (3/3) ... [2019-10-15 03:09:18,392 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2019-10-15 03:09:18,402 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:18,413 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:18,425 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:18,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:18,472 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:18,472 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:18,472 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:18,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:18,473 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:18,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:18,473 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states. [2019-10-15 03:09:18,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:09:18,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:18,530 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] [2019-10-15 03:09:18,533 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:18,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:18,542 INFO L82 PathProgramCache]: Analyzing trace with hash 581244493, now seen corresponding path program 1 times [2019-10-15 03:09:18,550 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:18,551 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76740470] [2019-10-15 03:09:18,551 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:18,551 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:18,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:19,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76740470] [2019-10-15 03:09:19,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223790654] [2019-10-15 03:09:19,294 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 [2019-10-15 03:09:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:19,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:19,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:20,076 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:20,303 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:20,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:09:20,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263617575] [2019-10-15 03:09:20,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:20,311 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:20,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:20,327 INFO L87 Difference]: Start difference. First operand 593 states. Second operand 3 states. [2019-10-15 03:09:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:20,566 INFO L93 Difference]: Finished difference Result 1301 states and 1989 transitions. [2019-10-15 03:09:20,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:20,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-15 03:09:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:20,596 INFO L225 Difference]: With dead ends: 1301 [2019-10-15 03:09:20,596 INFO L226 Difference]: Without dead ends: 840 [2019-10-15 03:09:20,606 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 [2019-10-15 03:09:20,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-10-15 03:09:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 827. [2019-10-15 03:09:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-10-15 03:09:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1248 transitions. [2019-10-15 03:09:20,786 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1248 transitions. Word has length 118 [2019-10-15 03:09:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:20,787 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 1248 transitions. [2019-10-15 03:09:20,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1248 transitions. [2019-10-15 03:09:20,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:20,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:20,802 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] [2019-10-15 03:09:21,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:21,008 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:21,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1987402003, now seen corresponding path program 1 times [2019-10-15 03:09:21,009 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:21,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250981952] [2019-10-15 03:09:21,009 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:21,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:21,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:21,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250981952] [2019-10-15 03:09:21,287 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:21,287 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:09:21,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99289073] [2019-10-15 03:09:21,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:09:21,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:21,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:09:21,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:09:21,290 INFO L87 Difference]: Start difference. First operand 827 states and 1248 transitions. Second operand 7 states. [2019-10-15 03:09:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:25,087 INFO L93 Difference]: Finished difference Result 3152 states and 4892 transitions. [2019-10-15 03:09:25,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:09:25,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-15 03:09:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:25,130 INFO L225 Difference]: With dead ends: 3152 [2019-10-15 03:09:25,131 INFO L226 Difference]: Without dead ends: 2356 [2019-10-15 03:09:25,142 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2019-10-15 03:09:25,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2281. [2019-10-15 03:09:25,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2019-10-15 03:09:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3530 transitions. [2019-10-15 03:09:25,324 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3530 transitions. Word has length 119 [2019-10-15 03:09:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:25,325 INFO L462 AbstractCegarLoop]: Abstraction has 2281 states and 3530 transitions. [2019-10-15 03:09:25,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:09:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3530 transitions. [2019-10-15 03:09:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:09:25,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:25,330 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] [2019-10-15 03:09:25,330 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1359031422, now seen corresponding path program 1 times [2019-10-15 03:09:25,331 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:25,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57242853] [2019-10-15 03:09:25,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:25,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:25,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:25,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57242853] [2019-10-15 03:09:25,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301579564] [2019-10-15 03:09:25,642 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 [2019-10-15 03:09:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:26,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:26,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:26,295 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:26,570 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:26,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-15 03:09:26,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20550846] [2019-10-15 03:09:26,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:26,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:26,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:09:26,572 INFO L87 Difference]: Start difference. First operand 2281 states and 3530 transitions. Second operand 3 states. [2019-10-15 03:09:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:26,773 INFO L93 Difference]: Finished difference Result 5605 states and 8810 transitions. [2019-10-15 03:09:26,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:26,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-15 03:09:26,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:26,812 INFO L225 Difference]: With dead ends: 5605 [2019-10-15 03:09:26,812 INFO L226 Difference]: Without dead ends: 3355 [2019-10-15 03:09:26,830 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 [2019-10-15 03:09:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2019-10-15 03:09:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3270. [2019-10-15 03:09:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2019-10-15 03:09:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 5073 transitions. [2019-10-15 03:09:27,011 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 5073 transitions. Word has length 119 [2019-10-15 03:09:27,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:27,013 INFO L462 AbstractCegarLoop]: Abstraction has 3270 states and 5073 transitions. [2019-10-15 03:09:27,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 5073 transitions. [2019-10-15 03:09:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:27,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:27,020 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] [2019-10-15 03:09:27,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:27,231 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:27,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1260805577, now seen corresponding path program 1 times [2019-10-15 03:09:27,232 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:27,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752504880] [2019-10-15 03:09:27,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:27,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:27,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:27,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752504880] [2019-10-15 03:09:27,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273487010] [2019-10-15 03:09:27,524 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 [2019-10-15 03:09:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:28,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:28,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:28,317 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:09:28,501 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:28,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-15 03:09:28,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886355070] [2019-10-15 03:09:28,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:28,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:28,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:28,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:28,504 INFO L87 Difference]: Start difference. First operand 3270 states and 5073 transitions. Second operand 4 states. [2019-10-15 03:09:28,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:28,770 INFO L93 Difference]: Finished difference Result 6357 states and 9958 transitions. [2019-10-15 03:09:28,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:09:28,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-15 03:09:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:28,799 INFO L225 Difference]: With dead ends: 6357 [2019-10-15 03:09:28,799 INFO L226 Difference]: Without dead ends: 3118 [2019-10-15 03:09:28,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2019-10-15 03:09:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3062. [2019-10-15 03:09:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2019-10-15 03:09:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4718 transitions. [2019-10-15 03:09:29,012 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4718 transitions. Word has length 120 [2019-10-15 03:09:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:29,013 INFO L462 AbstractCegarLoop]: Abstraction has 3062 states and 4718 transitions. [2019-10-15 03:09:29,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4718 transitions. [2019-10-15 03:09:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:29,021 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:29,021 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] [2019-10-15 03:09:29,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:29,231 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:29,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:29,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1128355594, now seen corresponding path program 1 times [2019-10-15 03:09:29,232 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:29,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992283827] [2019-10-15 03:09:29,232 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:29,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:29,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:09:29,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992283827] [2019-10-15 03:09:29,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953298686] [2019-10-15 03:09:29,534 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 [2019-10-15 03:09:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:30,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:09:30,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:09:30,325 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:30,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:30,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:30,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-15 03:09:30,840 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905714965] [2019-10-15 03:09:30,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:09:30,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:30,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:09:30,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:30,844 INFO L87 Difference]: Start difference. First operand 3062 states and 4718 transitions. Second operand 6 states. [2019-10-15 03:09:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:33,078 INFO L93 Difference]: Finished difference Result 8030 states and 12587 transitions. [2019-10-15 03:09:33,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:09:33,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-15 03:09:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:33,123 INFO L225 Difference]: With dead ends: 8030 [2019-10-15 03:09:33,124 INFO L226 Difference]: Without dead ends: 4999 [2019-10-15 03:09:33,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:09:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2019-10-15 03:09:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4963. [2019-10-15 03:09:33,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4963 states. [2019-10-15 03:09:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7520 transitions. [2019-10-15 03:09:33,388 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7520 transitions. Word has length 120 [2019-10-15 03:09:33,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:33,389 INFO L462 AbstractCegarLoop]: Abstraction has 4963 states and 7520 transitions. [2019-10-15 03:09:33,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:09:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7520 transitions. [2019-10-15 03:09:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:09:33,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:33,392 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] [2019-10-15 03:09:33,600 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:33,601 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:33,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:33,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1968729867, now seen corresponding path program 1 times [2019-10-15 03:09:33,601 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:33,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559765185] [2019-10-15 03:09:33,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:09:33,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559765185] [2019-10-15 03:09:33,955 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:33,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:09:33,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327855042] [2019-10-15 03:09:33,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:33,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:33,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:33,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:33,957 INFO L87 Difference]: Start difference. First operand 4963 states and 7520 transitions. Second operand 10 states. [2019-10-15 03:09:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:38,640 INFO L93 Difference]: Finished difference Result 17484 states and 27189 transitions. [2019-10-15 03:09:38,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:09:38,641 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-15 03:09:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:38,946 INFO L225 Difference]: With dead ends: 17484 [2019-10-15 03:09:38,946 INFO L226 Difference]: Without dead ends: 12552 [2019-10-15 03:09:38,992 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:09:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2019-10-15 03:09:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12397. [2019-10-15 03:09:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12397 states. [2019-10-15 03:09:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 19082 transitions. [2019-10-15 03:09:39,661 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 19082 transitions. Word has length 125 [2019-10-15 03:09:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:39,662 INFO L462 AbstractCegarLoop]: Abstraction has 12397 states and 19082 transitions. [2019-10-15 03:09:39,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 19082 transitions. [2019-10-15 03:09:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:09:39,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:39,668 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] [2019-10-15 03:09:39,669 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:39,669 INFO L82 PathProgramCache]: Analyzing trace with hash -722498573, now seen corresponding path program 1 times [2019-10-15 03:09:39,670 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:39,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120258888] [2019-10-15 03:09:39,670 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:39,671 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:39,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:09:40,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120258888] [2019-10-15 03:09:40,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:40,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-15 03:09:40,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460432138] [2019-10-15 03:09:40,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:09:40,071 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:40,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:09:40,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:09:40,073 INFO L87 Difference]: Start difference. First operand 12397 states and 19082 transitions. Second operand 14 states.