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-f4eb214f-m [2019-10-13 23:04:43,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:43,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:43,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:43,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:43,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:43,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:43,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:43,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:43,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:43,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:43,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:43,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:43,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:43,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:43,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:43,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:43,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:43,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:43,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:43,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:43,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:43,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:43,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:43,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:43,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:43,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:43,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:43,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:43,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:43,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:43,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:43,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:43,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:43,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:43,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:43,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:43,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:43,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:43,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:43,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:43,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:43,934 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:43,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:43,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:43,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:43,936 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:43,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:43,936 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:43,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:43,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:43,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:43,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:43,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:43,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:43,937 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:43,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:43,938 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:43,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:43,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:43,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:43,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:43,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:43,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:43,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:43,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:43,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:43,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:43,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:43,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:43,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:44,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:44,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:44,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:44,228 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:44,229 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:44,229 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c [2019-10-13 23:04:44,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a971cff/6f396ad2955f4fb987ecac2398095749/FLAG1d349e56b [2019-10-13 23:04:45,017 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:45,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product19.cil.c [2019-10-13 23:04:45,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a971cff/6f396ad2955f4fb987ecac2398095749/FLAG1d349e56b [2019-10-13 23:04:45,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07a971cff/6f396ad2955f4fb987ecac2398095749 [2019-10-13 23:04:45,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:45,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:45,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:45,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:45,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:45,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24245c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:45, skipping insertion in model container [2019-10-13 23:04:45,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:45" (1/1) ... [2019-10-13 23:04:45,229 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:45,312 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:46,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:46,067 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:46,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:46,327 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:46,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46 WrapperNode [2019-10-13 23:04:46,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:46,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:46,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:46,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:46,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (1/1) ... [2019-10-13 23:04:46,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (1/1) ... [2019-10-13 23:04:46,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (1/1) ... [2019-10-13 23:04:46,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (1/1) ... [2019-10-13 23:04:46,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (1/1) ... [2019-10-13 23:04:46,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (1/1) ... [2019-10-13 23:04:46,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (1/1) ... [2019-10-13 23:04:46,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:46,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:46,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:46,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:46,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:46,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:46,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:46,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:46,620 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:46,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:46,626 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:46,627 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:46,628 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:46,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:46,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:46,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:46,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:46,631 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:46,631 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:46,635 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:46,635 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:46,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:46,658 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:46,659 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:46,660 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:46,665 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:46,666 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:46,666 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:52,285 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:52,285 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:52,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:52 BoogieIcfgContainer [2019-10-13 23:04:52,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:52,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:52,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:52,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:52,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:45" (1/3) ... [2019-10-13 23:04:52,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a29f98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:52, skipping insertion in model container [2019-10-13 23:04:52,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:46" (2/3) ... [2019-10-13 23:04:52,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a29f98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:52, skipping insertion in model container [2019-10-13 23:04:52,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:52" (3/3) ... [2019-10-13 23:04:52,298 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2019-10-13 23:04:52,310 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:52,321 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:52,333 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:52,365 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:52,365 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:52,365 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:52,365 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:52,365 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:52,365 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:52,366 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:52,366 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states. [2019-10-13 23:04:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:52,418 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:52,420 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:52,422 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:52,429 INFO L82 PathProgramCache]: Analyzing trace with hash 581244493, now seen corresponding path program 1 times [2019-10-13 23:04:52,440 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:52,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092987147] [2019-10-13 23:04:52,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:52,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:52,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:53,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092987147] [2019-10-13 23:04:53,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689386501] [2019-10-13 23:04:53,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:54,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:04:54,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:04:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:54,122 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:04:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:04:54,352 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:04:54,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 23:04:54,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146402931] [2019-10-13 23:04:54,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:04:54,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:54,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:04:54,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:54,390 INFO L87 Difference]: Start difference. First operand 593 states. Second operand 3 states. [2019-10-13 23:04:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:54,726 INFO L93 Difference]: Finished difference Result 1301 states and 1989 transitions. [2019-10-13 23:04:54,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:04:54,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-13 23:04:54,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:54,781 INFO L225 Difference]: With dead ends: 1301 [2019-10-13 23:04:54,781 INFO L226 Difference]: Without dead ends: 840 [2019-10-13 23:04:54,796 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-10-13 23:04:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 827. [2019-10-13 23:04:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-10-13 23:04:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1248 transitions. [2019-10-13 23:04:55,015 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1248 transitions. Word has length 118 [2019-10-13 23:04:55,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:55,016 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 1248 transitions. [2019-10-13 23:04:55,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:04:55,016 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1248 transitions. [2019-10-13 23:04:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:55,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:55,024 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:55,236 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:55,237 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:55,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:55,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1987402003, now seen corresponding path program 1 times [2019-10-13 23:04:55,238 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:55,238 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971102373] [2019-10-13 23:04:55,238 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:55,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:55,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:04:55,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971102373] [2019-10-13 23:04:55,656 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:55,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:55,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167057631] [2019-10-13 23:04:55,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:55,659 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:55,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:55,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:55,659 INFO L87 Difference]: Start difference. First operand 827 states and 1248 transitions. Second operand 7 states. [2019-10-13 23:04:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:59,151 INFO L93 Difference]: Finished difference Result 3152 states and 4892 transitions. [2019-10-13 23:04:59,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:04:59,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-13 23:04:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:59,183 INFO L225 Difference]: With dead ends: 3152 [2019-10-13 23:04:59,183 INFO L226 Difference]: Without dead ends: 2356 [2019-10-13 23:04:59,191 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:04:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2019-10-13 23:04:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2281. [2019-10-13 23:04:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2019-10-13 23:04:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3530 transitions. [2019-10-13 23:04:59,367 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3530 transitions. Word has length 119 [2019-10-13 23:04:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:59,369 INFO L462 AbstractCegarLoop]: Abstraction has 2281 states and 3530 transitions. [2019-10-13 23:04:59,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3530 transitions. [2019-10-13 23:04:59,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:59,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:59,380 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, 1] [2019-10-13 23:04:59,380 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1666958552, now seen corresponding path program 1 times [2019-10-13 23:04:59,381 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:59,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95162672] [2019-10-13 23:04:59,381 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:59,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95162672] [2019-10-13 23:04:59,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079323877] [2019-10-13 23:04:59,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:00,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:00,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:00,462 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:00,626 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:00,626 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-13 23:05:00,626 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989878896] [2019-10-13 23:05:00,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:05:00,627 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:00,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:05:00,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:00,628 INFO L87 Difference]: Start difference. First operand 2281 states and 3530 transitions. Second operand 4 states. [2019-10-13 23:05:00,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:00,807 INFO L93 Difference]: Finished difference Result 4373 states and 6837 transitions. [2019-10-13 23:05:00,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:05:00,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:05:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:00,827 INFO L225 Difference]: With dead ends: 4373 [2019-10-13 23:05:00,827 INFO L226 Difference]: Without dead ends: 2123 [2019-10-13 23:05:00,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2019-10-13 23:05:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2073. [2019-10-13 23:05:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2019-10-13 23:05:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3175 transitions. [2019-10-13 23:05:00,992 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3175 transitions. Word has length 121 [2019-10-13 23:05:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:00,993 INFO L462 AbstractCegarLoop]: Abstraction has 2073 states and 3175 transitions. [2019-10-13 23:05:00,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:05:00,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3175 transitions. [2019-10-13 23:05:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:01,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:01,004 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:01,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:01,216 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:01,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:01,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1359031422, now seen corresponding path program 1 times [2019-10-13 23:05:01,217 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:01,218 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69357398] [2019-10-13 23:05:01,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:01,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:01,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:01,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69357398] [2019-10-13 23:05:01,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382580430] [2019-10-13 23:05:01,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:02,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:02,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:02,406 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:02,564 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:02,565 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-13 23:05:02,565 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381989526] [2019-10-13 23:05:02,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:02,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:02,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:02,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:05:02,567 INFO L87 Difference]: Start difference. First operand 2073 states and 3175 transitions. Second operand 3 states. [2019-10-13 23:05:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:02,740 INFO L93 Difference]: Finished difference Result 5189 states and 8097 transitions. [2019-10-13 23:05:02,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:02,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:05:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:02,770 INFO L225 Difference]: With dead ends: 5189 [2019-10-13 23:05:02,771 INFO L226 Difference]: Without dead ends: 3147 [2019-10-13 23:05:02,785 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:05:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2019-10-13 23:05:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 3062. [2019-10-13 23:05:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3062 states. [2019-10-13 23:05:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4718 transitions. [2019-10-13 23:05:03,056 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4718 transitions. Word has length 119 [2019-10-13 23:05:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:03,057 INFO L462 AbstractCegarLoop]: Abstraction has 3062 states and 4718 transitions. [2019-10-13 23:05:03,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4718 transitions. [2019-10-13 23:05:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:05:03,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:03,062 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:03,270 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:03,271 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:03,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1128355594, now seen corresponding path program 1 times [2019-10-13 23:05:03,272 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:03,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096978453] [2019-10-13 23:05:03,273 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,273 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:05:03,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096978453] [2019-10-13 23:05:03,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775466268] [2019-10-13 23:05:03,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:04,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:05:04,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 23:05:04,593 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:04,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:05:04,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:04,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-13 23:05:04,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517113961] [2019-10-13 23:05:04,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:05:04,967 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:04,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:05:04,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:04,968 INFO L87 Difference]: Start difference. First operand 3062 states and 4718 transitions. Second operand 6 states. [2019-10-13 23:05:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:06,943 INFO L93 Difference]: Finished difference Result 8030 states and 12587 transitions. [2019-10-13 23:05:06,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:05:06,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-13 23:05:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:06,990 INFO L225 Difference]: With dead ends: 8030 [2019-10-13 23:05:06,991 INFO L226 Difference]: Without dead ends: 4999 [2019-10-13 23:05:07,015 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2019-10-13 23:05:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4963. [2019-10-13 23:05:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4963 states. [2019-10-13 23:05:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7520 transitions. [2019-10-13 23:05:07,302 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7520 transitions. Word has length 120 [2019-10-13 23:05:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:07,303 INFO L462 AbstractCegarLoop]: Abstraction has 4963 states and 7520 transitions. [2019-10-13 23:05:07,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:05:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7520 transitions. [2019-10-13 23:05:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:05:07,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:07,307 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:07,516 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:07,516 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1968729867, now seen corresponding path program 1 times [2019-10-13 23:05:07,517 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:07,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329232424] [2019-10-13 23:05:07,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,519 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:05:07,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329232424] [2019-10-13 23:05:07,770 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:07,771 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:07,771 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920880443] [2019-10-13 23:05:07,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:07,772 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:07,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:07,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:07,772 INFO L87 Difference]: Start difference. First operand 4963 states and 7520 transitions. Second operand 10 states. [2019-10-13 23:05:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:11,264 INFO L93 Difference]: Finished difference Result 17484 states and 27189 transitions. [2019-10-13 23:05:11,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:05:11,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-13 23:05:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:11,396 INFO L225 Difference]: With dead ends: 17484 [2019-10-13 23:05:11,396 INFO L226 Difference]: Without dead ends: 12552 [2019-10-13 23:05:11,444 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2019-10-13 23:05:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12397. [2019-10-13 23:05:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12397 states. [2019-10-13 23:05:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 19082 transitions. [2019-10-13 23:05:12,203 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 19082 transitions. Word has length 125 [2019-10-13 23:05:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:12,204 INFO L462 AbstractCegarLoop]: Abstraction has 12397 states and 19082 transitions. [2019-10-13 23:05:12,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 19082 transitions. [2019-10-13 23:05:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:05:12,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:12,208 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:12,209 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash -722498573, now seen corresponding path program 1 times [2019-10-13 23:05:12,209 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:12,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451461510] [2019-10-13 23:05:12,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:12,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:12,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 23:05:12,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451461510] [2019-10-13 23:05:12,651 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:12,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 23:05:12,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170912583] [2019-10-13 23:05:12,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 23:05:12,653 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 23:05:12,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:05:12,654 INFO L87 Difference]: Start difference. First operand 12397 states and 19082 transitions. Second operand 14 states.