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_spec13_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:01:41,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:01:41,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:01:41,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:01:41,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:01:41,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:01:41,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:01:41,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:01:41,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:01:41,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:01:41,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:01:41,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:01:41,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:01:41,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:01:41,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:01:41,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:01:41,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:01:41,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:01:41,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:01:41,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:01:41,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:01:41,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:01:41,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:01:41,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:01:41,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:01:41,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:01:41,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:01:41,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:01:41,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:01:41,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:01:41,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:01:41,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:01:41,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:01:41,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:01:41,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:01:41,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:01:41,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:01:41,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:01:41,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:01:41,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:01:41,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:01:41,693 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 23:01:41,712 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:01:41,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:01:41,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:01:41,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:01:41,717 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:01:41,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:01:41,717 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:01:41,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:01:41,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:01:41,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:01:41,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:01:41,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:01:41,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:01:41,720 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:01:41,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:01:41,720 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:01:41,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:01:41,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:01:41,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:01:41,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:01:41,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:01:41,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:01:41,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:01:41,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:01:41,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:01:41,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:01:41,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:01:41,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:01:41,724 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 23:01:42,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:01:42,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:01:42,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:01:42,038 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:01:42,038 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:01:42,039 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-10-13 23:01:42,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84fb42798/838c31854fff45ca9c5cbaa43a4f40f9/FLAG6f0775a65 [2019-10-13 23:01:42,689 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:01:42,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-10-13 23:01:42,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84fb42798/838c31854fff45ca9c5cbaa43a4f40f9/FLAG6f0775a65 [2019-10-13 23:01:42,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84fb42798/838c31854fff45ca9c5cbaa43a4f40f9 [2019-10-13 23:01:42,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:01:42,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:01:42,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:01:42,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:01:42,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:01:42,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:01:42" (1/1) ... [2019-10-13 23:01:42,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667357e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:42, skipping insertion in model container [2019-10-13 23:01:42,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:01:42" (1/1) ... [2019-10-13 23:01:42,944 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:01:43,023 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:01:43,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:01:43,779 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:01:43,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:01:44,001 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:01:44,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44 WrapperNode [2019-10-13 23:01:44,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:01:44,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:01:44,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:01:44,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:01:44,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (1/1) ... [2019-10-13 23:01:44,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:01:44,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:01:44,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:01:44,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:01:44,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (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 23:01:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:01:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:01:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:01:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:01:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:01:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:01:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:01:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:01:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:01:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:01:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:01:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:01:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:01:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:01:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:01:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:01:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:01:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:01:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:01:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:01:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:01:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:01:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:01:44,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:01:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:01:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:01:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:01:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:01:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:01:44,326 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:01:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:01:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:01:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:01:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:01:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:01:44,327 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:01:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:01:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:01:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:01:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:01:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:01:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:01:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:01:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:01:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:01:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:01:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:01:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:01:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:01:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:01:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:01:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:01:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:01:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:01:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:01:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:01:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:01:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 23:01:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 23:01:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:01:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:01:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:01:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:01:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:01:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:01:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:01:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:01:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:01:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:01:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:01:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:01:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:01:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:01:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:01:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:01:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:01:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:01:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:01:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:01:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:01:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:01:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:01:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:01:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:01:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:01:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:01:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:01:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:01:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:01:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:01:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:01:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:01:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:01:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:01:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:01:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:01:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:01:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:01:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:01:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:01:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:01:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:01:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:01:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:01:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:01:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:01:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:01:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:01:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:01:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:01:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:01:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:01:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:01:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:01:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:01:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:01:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:01:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:01:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:01:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:01:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:01:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:01:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:01:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:01:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:01:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:01:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:01:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:01:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 23:01:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 23:01:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:01:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:01:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:01:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:01:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:01:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:01:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:01:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:01:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:01:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:01:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:01:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:01:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:01:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:01:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:01:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:01:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:01:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:01:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:01:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:01:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:01:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:01:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:01:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:01:49,005 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:01:49,005 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:01:49,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:01:49 BoogieIcfgContainer [2019-10-13 23:01:49,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:01:49,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:01:49,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:01:49,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:01:49,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:01:42" (1/3) ... [2019-10-13 23:01:49,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4d3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:01:49, skipping insertion in model container [2019-10-13 23:01:49,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:01:44" (2/3) ... [2019-10-13 23:01:49,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4d3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:01:49, skipping insertion in model container [2019-10-13 23:01:49,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:01:49" (3/3) ... [2019-10-13 23:01:49,016 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2019-10-13 23:01:49,026 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:01:49,036 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:01:49,047 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:01:49,091 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:01:49,091 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:01:49,091 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:01:49,091 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:01:49,091 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:01:49,092 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:01:49,092 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:01:49,092 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:01:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states. [2019-10-13 23:01:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 23:01:49,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:49,208 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:49,210 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:49,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1111209335, now seen corresponding path program 1 times [2019-10-13 23:01:49,224 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:49,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484039379] [2019-10-13 23:01:49,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:49,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:49,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:49,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484039379] [2019-10-13 23:01:49,931 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:49,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:01:49,932 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906957172] [2019-10-13 23:01:49,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:01:49,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:49,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:01:49,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:01:49,959 INFO L87 Difference]: Start difference. First operand 587 states. Second operand 7 states. [2019-10-13 23:01:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:50,474 INFO L93 Difference]: Finished difference Result 1376 states and 2124 transitions. [2019-10-13 23:01:50,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:01:50,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2019-10-13 23:01:50,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:50,501 INFO L225 Difference]: With dead ends: 1376 [2019-10-13 23:01:50,502 INFO L226 Difference]: Without dead ends: 912 [2019-10-13 23:01:50,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:01:50,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-13 23:01:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 896. [2019-10-13 23:01:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2019-10-13 23:01:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1361 transitions. [2019-10-13 23:01:50,720 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1361 transitions. Word has length 127 [2019-10-13 23:01:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:50,721 INFO L462 AbstractCegarLoop]: Abstraction has 896 states and 1361 transitions. [2019-10-13 23:01:50,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:01:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1361 transitions. [2019-10-13 23:01:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 23:01:50,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:50,735 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:50,736 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:50,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:50,738 INFO L82 PathProgramCache]: Analyzing trace with hash 664979498, now seen corresponding path program 1 times [2019-10-13 23:01:50,739 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:50,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025088340] [2019-10-13 23:01:50,739 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:50,739 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:50,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:51,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025088340] [2019-10-13 23:01:51,159 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:51,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:01:51,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56120447] [2019-10-13 23:01:51,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:01:51,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:51,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:01:51,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:01:51,171 INFO L87 Difference]: Start difference. First operand 896 states and 1361 transitions. Second operand 7 states. [2019-10-13 23:01:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:51,308 INFO L93 Difference]: Finished difference Result 1353 states and 2073 transitions. [2019-10-13 23:01:51,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:01:51,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-13 23:01:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:51,323 INFO L225 Difference]: With dead ends: 1353 [2019-10-13 23:01:51,324 INFO L226 Difference]: Without dead ends: 918 [2019-10-13 23:01:51,327 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:01:51,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2019-10-13 23:01:51,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 910. [2019-10-13 23:01:51,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2019-10-13 23:01:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1381 transitions. [2019-10-13 23:01:51,376 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1381 transitions. Word has length 132 [2019-10-13 23:01:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:51,377 INFO L462 AbstractCegarLoop]: Abstraction has 910 states and 1381 transitions. [2019-10-13 23:01:51,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:01:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1381 transitions. [2019-10-13 23:01:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:01:51,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:51,382 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:51,383 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:51,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:51,383 INFO L82 PathProgramCache]: Analyzing trace with hash -220183967, now seen corresponding path program 1 times [2019-10-13 23:01:51,383 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:51,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841571924] [2019-10-13 23:01:51,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:51,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:51,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:51,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841571924] [2019-10-13 23:01:51,632 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:51,632 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:01:51,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878823831] [2019-10-13 23:01:51,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:01:51,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:01:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:01:51,633 INFO L87 Difference]: Start difference. First operand 910 states and 1381 transitions. Second operand 7 states. [2019-10-13 23:01:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:51,742 INFO L93 Difference]: Finished difference Result 1370 states and 2095 transitions. [2019-10-13 23:01:51,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:01:51,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-13 23:01:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:51,751 INFO L225 Difference]: With dead ends: 1370 [2019-10-13 23:01:51,751 INFO L226 Difference]: Without dead ends: 928 [2019-10-13 23:01:51,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:01:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2019-10-13 23:01:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 912. [2019-10-13 23:01:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2019-10-13 23:01:51,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1383 transitions. [2019-10-13 23:01:51,809 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1383 transitions. Word has length 131 [2019-10-13 23:01:51,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:51,810 INFO L462 AbstractCegarLoop]: Abstraction has 912 states and 1383 transitions. [2019-10-13 23:01:51,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:01:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1383 transitions. [2019-10-13 23:01:51,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 23:01:51,815 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:51,815 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:51,815 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:51,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:51,816 INFO L82 PathProgramCache]: Analyzing trace with hash 82949642, now seen corresponding path program 1 times [2019-10-13 23:01:51,816 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:51,816 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681618345] [2019-10-13 23:01:51,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:51,817 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:51,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:52,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681618345] [2019-10-13 23:01:52,117 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:52,117 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:01:52,118 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518377516] [2019-10-13 23:01:52,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:01:52,118 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:52,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:01:52,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:01:52,119 INFO L87 Difference]: Start difference. First operand 912 states and 1383 transitions. Second operand 7 states. [2019-10-13 23:01:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:52,222 INFO L93 Difference]: Finished difference Result 1373 states and 2098 transitions. [2019-10-13 23:01:52,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:01:52,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-13 23:01:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:52,233 INFO L225 Difference]: With dead ends: 1373 [2019-10-13 23:01:52,234 INFO L226 Difference]: Without dead ends: 930 [2019-10-13 23:01:52,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:01:52,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2019-10-13 23:01:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 914. [2019-10-13 23:01:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2019-10-13 23:01:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1385 transitions. [2019-10-13 23:01:52,284 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1385 transitions. Word has length 132 [2019-10-13 23:01:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:52,285 INFO L462 AbstractCegarLoop]: Abstraction has 914 states and 1385 transitions. [2019-10-13 23:01:52,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:01:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1385 transitions. [2019-10-13 23:01:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:01:52,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:52,290 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:52,291 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:52,291 INFO L82 PathProgramCache]: Analyzing trace with hash -944116094, now seen corresponding path program 1 times [2019-10-13 23:01:52,291 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:52,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569372247] [2019-10-13 23:01:52,292 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:52,292 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:52,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:52,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569372247] [2019-10-13 23:01:52,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:52,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:01:52,514 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641896425] [2019-10-13 23:01:52,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:01:52,515 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:52,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:01:52,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:01:52,516 INFO L87 Difference]: Start difference. First operand 914 states and 1385 transitions. Second operand 4 states. [2019-10-13 23:01:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:53,722 INFO L93 Difference]: Finished difference Result 1929 states and 2950 transitions. [2019-10-13 23:01:53,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:01:53,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2019-10-13 23:01:53,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:53,741 INFO L225 Difference]: With dead ends: 1929 [2019-10-13 23:01:53,741 INFO L226 Difference]: Without dead ends: 1360 [2019-10-13 23:01:53,745 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:01:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2019-10-13 23:01:53,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1341. [2019-10-13 23:01:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2019-10-13 23:01:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2001 transitions. [2019-10-13 23:01:53,811 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2001 transitions. Word has length 136 [2019-10-13 23:01:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:53,813 INFO L462 AbstractCegarLoop]: Abstraction has 1341 states and 2001 transitions. [2019-10-13 23:01:53,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:01:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2001 transitions. [2019-10-13 23:01:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 23:01:53,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:53,818 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:53,819 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:53,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:53,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1326904735, now seen corresponding path program 1 times [2019-10-13 23:01:53,820 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:53,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351923692] [2019-10-13 23:01:53,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:53,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:53,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:54,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351923692] [2019-10-13 23:01:54,009 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:54,009 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:01:54,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954143151] [2019-10-13 23:01:54,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:01:54,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:54,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:01:54,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:01:54,012 INFO L87 Difference]: Start difference. First operand 1341 states and 2001 transitions. Second operand 4 states. [2019-10-13 23:01:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:55,278 INFO L93 Difference]: Finished difference Result 5137 states and 8024 transitions. [2019-10-13 23:01:55,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:01:55,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-10-13 23:01:55,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:55,308 INFO L225 Difference]: With dead ends: 5137 [2019-10-13 23:01:55,308 INFO L226 Difference]: Without dead ends: 3833 [2019-10-13 23:01:55,319 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:01:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2019-10-13 23:01:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 3780. [2019-10-13 23:01:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3780 states. [2019-10-13 23:01:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5804 transitions. [2019-10-13 23:01:55,495 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5804 transitions. Word has length 139 [2019-10-13 23:01:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:55,496 INFO L462 AbstractCegarLoop]: Abstraction has 3780 states and 5804 transitions. [2019-10-13 23:01:55,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:01:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5804 transitions. [2019-10-13 23:01:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 23:01:55,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:55,501 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:55,501 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:55,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:55,502 INFO L82 PathProgramCache]: Analyzing trace with hash 201997333, now seen corresponding path program 1 times [2019-10-13 23:01:55,502 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:55,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973412449] [2019-10-13 23:01:55,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:55,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:55,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:55,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973412449] [2019-10-13 23:01:55,669 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:55,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:01:55,670 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905779900] [2019-10-13 23:01:55,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:01:55,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:55,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:01:55,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:01:55,671 INFO L87 Difference]: Start difference. First operand 3780 states and 5804 transitions. Second operand 4 states. [2019-10-13 23:01:55,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:55,929 INFO L93 Difference]: Finished difference Result 6950 states and 10949 transitions. [2019-10-13 23:01:55,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:01:55,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2019-10-13 23:01:55,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:55,959 INFO L225 Difference]: With dead ends: 6950 [2019-10-13 23:01:55,959 INFO L226 Difference]: Without dead ends: 4074 [2019-10-13 23:01:55,986 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:01:55,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2019-10-13 23:01:56,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4074. [2019-10-13 23:01:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4074 states. [2019-10-13 23:01:56,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 6294 transitions. [2019-10-13 23:01:56,230 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 6294 transitions. Word has length 141 [2019-10-13 23:01:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:56,231 INFO L462 AbstractCegarLoop]: Abstraction has 4074 states and 6294 transitions. [2019-10-13 23:01:56,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:01:56,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 6294 transitions. [2019-10-13 23:01:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 23:01:56,235 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:56,235 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:56,235 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:56,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1631885335, now seen corresponding path program 1 times [2019-10-13 23:01:56,236 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:56,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283939955] [2019-10-13 23:01:56,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:56,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:56,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:56,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283939955] [2019-10-13 23:01:56,420 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:01:56,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:01:56,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217999295] [2019-10-13 23:01:56,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:01:56,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:56,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:01:56,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:01:56,421 INFO L87 Difference]: Start difference. First operand 4074 states and 6294 transitions. Second operand 5 states. [2019-10-13 23:01:57,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:57,056 INFO L93 Difference]: Finished difference Result 6984 states and 10855 transitions. [2019-10-13 23:01:57,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:01:57,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-10-13 23:01:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:57,088 INFO L225 Difference]: With dead ends: 6984 [2019-10-13 23:01:57,088 INFO L226 Difference]: Without dead ends: 4114 [2019-10-13 23:01:57,107 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:01:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2019-10-13 23:01:57,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 4089. [2019-10-13 23:01:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4089 states. [2019-10-13 23:01:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 6315 transitions. [2019-10-13 23:01:57,301 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 6315 transitions. Word has length 141 [2019-10-13 23:01:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:57,302 INFO L462 AbstractCegarLoop]: Abstraction has 4089 states and 6315 transitions. [2019-10-13 23:01:57,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:01:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 6315 transitions. [2019-10-13 23:01:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 23:01:57,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:57,307 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:57,307 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:57,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:57,308 INFO L82 PathProgramCache]: Analyzing trace with hash -235512630, now seen corresponding path program 1 times [2019-10-13 23:01:57,308 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:57,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838666279] [2019-10-13 23:01:57,309 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:57,309 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:57,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:01:57,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838666279] [2019-10-13 23:01:57,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220816905] [2019-10-13 23:01:57,590 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 23:01:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:58,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 23:01:58,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:01:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:01:58,170 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:01:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:01:58,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:01:58,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-13 23:01:58,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953611514] [2019-10-13 23:01:58,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:01:58,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:01:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:01:58,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:01:58,367 INFO L87 Difference]: Start difference. First operand 4089 states and 6315 transitions. Second operand 4 states. [2019-10-13 23:01:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:01:58,554 INFO L93 Difference]: Finished difference Result 8195 states and 12858 transitions. [2019-10-13 23:01:58,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:01:58,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-13 23:01:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:01:58,585 INFO L225 Difference]: With dead ends: 8195 [2019-10-13 23:01:58,586 INFO L226 Difference]: Without dead ends: 4143 [2019-10-13 23:01:58,614 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:01:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2019-10-13 23:01:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2019-10-13 23:01:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4143 states. [2019-10-13 23:01:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 6369 transitions. [2019-10-13 23:01:58,812 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 6369 transitions. Word has length 145 [2019-10-13 23:01:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:01:58,813 INFO L462 AbstractCegarLoop]: Abstraction has 4143 states and 6369 transitions. [2019-10-13 23:01:58,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:01:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 6369 transitions. [2019-10-13 23:01:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 23:01:58,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:01:58,821 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:01:59,034 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:01:59,034 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:01:59,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:01:59,035 INFO L82 PathProgramCache]: Analyzing trace with hash 679132033, now seen corresponding path program 1 times [2019-10-13 23:01:59,035 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:01:59,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511069232] [2019-10-13 23:01:59,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:59,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:01:59,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:01:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:01:59,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511069232] [2019-10-13 23:01:59,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836256559] [2019-10-13 23:01:59,336 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 23:01:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:01:59,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 23:01:59,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 23:02:00,034 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:02:00,214 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:00,214 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-13 23:02:00,215 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407950622] [2019-10-13 23:02:00,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:00,216 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:00,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:00,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:00,217 INFO L87 Difference]: Start difference. First operand 4143 states and 6369 transitions. Second operand 5 states. [2019-10-13 23:02:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:00,405 INFO L93 Difference]: Finished difference Result 8276 states and 12880 transitions. [2019-10-13 23:02:00,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:00,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-13 23:02:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:00,458 INFO L225 Difference]: With dead ends: 8276 [2019-10-13 23:02:00,459 INFO L226 Difference]: Without dead ends: 4134 [2019-10-13 23:02:00,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2019-10-13 23:02:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4134. [2019-10-13 23:02:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4134 states. [2019-10-13 23:02:00,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 6333 transitions. [2019-10-13 23:02:00,731 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 6333 transitions. Word has length 147 [2019-10-13 23:02:00,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:00,732 INFO L462 AbstractCegarLoop]: Abstraction has 4134 states and 6333 transitions. [2019-10-13 23:02:00,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 6333 transitions. [2019-10-13 23:02:00,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 23:02:00,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:00,737 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:00,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:00,949 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:00,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:00,950 INFO L82 PathProgramCache]: Analyzing trace with hash -361513471, now seen corresponding path program 1 times [2019-10-13 23:02:00,950 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:00,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3572277] [2019-10-13 23:02:00,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:00,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:00,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:02:01,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3572277] [2019-10-13 23:02:01,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586498165] [2019-10-13 23:02:01,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:02,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 23:02:02,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:02:02,317 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:02:02,519 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:02,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-13 23:02:02,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322181103] [2019-10-13 23:02:02,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:02,521 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:02,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:02,522 INFO L87 Difference]: Start difference. First operand 4134 states and 6333 transitions. Second operand 5 states. [2019-10-13 23:02:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:03,705 INFO L93 Difference]: Finished difference Result 10619 states and 16979 transitions. [2019-10-13 23:02:03,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:02:03,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-13 23:02:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:03,749 INFO L225 Difference]: With dead ends: 10619 [2019-10-13 23:02:03,749 INFO L226 Difference]: Without dead ends: 6522 [2019-10-13 23:02:03,768 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 288 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:02:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2019-10-13 23:02:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 6443. [2019-10-13 23:02:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6443 states. [2019-10-13 23:02:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6443 states to 6443 states and 10008 transitions. [2019-10-13 23:02:04,095 INFO L78 Accepts]: Start accepts. Automaton has 6443 states and 10008 transitions. Word has length 148 [2019-10-13 23:02:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:04,096 INFO L462 AbstractCegarLoop]: Abstraction has 6443 states and 10008 transitions. [2019-10-13 23:02:04,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 6443 states and 10008 transitions. [2019-10-13 23:02:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 23:02:04,103 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:04,104 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:04,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:04,305 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1998222068, now seen corresponding path program 1 times [2019-10-13 23:02:04,307 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:04,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282513600] [2019-10-13 23:02:04,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:04,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:04,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:04,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282513600] [2019-10-13 23:02:04,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482991410] [2019-10-13 23:02:04,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:05,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-13 23:02:05,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:02:05,433 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:02:05,811 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:05,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-13 23:02:05,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003624858] [2019-10-13 23:02:05,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:05,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:05,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:05,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:02:05,813 INFO L87 Difference]: Start difference. First operand 6443 states and 10008 transitions. Second operand 7 states. [2019-10-13 23:02:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:07,359 INFO L93 Difference]: Finished difference Result 14122 states and 22435 transitions. [2019-10-13 23:02:07,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:02:07,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2019-10-13 23:02:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:07,399 INFO L225 Difference]: With dead ends: 14122 [2019-10-13 23:02:07,399 INFO L226 Difference]: Without dead ends: 7716 [2019-10-13 23:02:07,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 287 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:02:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7716 states. [2019-10-13 23:02:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7716 to 7692. [2019-10-13 23:02:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7692 states. [2019-10-13 23:02:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 12348 transitions. [2019-10-13 23:02:07,735 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 12348 transitions. Word has length 149 [2019-10-13 23:02:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:07,736 INFO L462 AbstractCegarLoop]: Abstraction has 7692 states and 12348 transitions. [2019-10-13 23:02:07,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 12348 transitions. [2019-10-13 23:02:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 23:02:07,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:07,741 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:07,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:07,952 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:07,953 INFO L82 PathProgramCache]: Analyzing trace with hash 2146798543, now seen corresponding path program 1 times [2019-10-13 23:02:07,953 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:07,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128084650] [2019-10-13 23:02:07,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:07,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:07,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:02:08,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128084650] [2019-10-13 23:02:08,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396007910] [2019-10-13 23:02:08,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:08,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 23:02:08,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:08,921 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:02:09,071 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:02:09,071 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-13 23:02:09,071 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728916473] [2019-10-13 23:02:09,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:09,072 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:09,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:09,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:09,073 INFO L87 Difference]: Start difference. First operand 7692 states and 12348 transitions. Second operand 5 states. [2019-10-13 23:02:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:09,423 INFO L93 Difference]: Finished difference Result 15488 states and 25497 transitions. [2019-10-13 23:02:09,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:09,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-13 23:02:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:09,462 INFO L225 Difference]: With dead ends: 15488 [2019-10-13 23:02:09,462 INFO L226 Difference]: Without dead ends: 7846 [2019-10-13 23:02:09,493 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 291 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7846 states. [2019-10-13 23:02:09,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7846 to 7768. [2019-10-13 23:02:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7768 states. [2019-10-13 23:02:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7768 states to 7768 states and 12426 transitions. [2019-10-13 23:02:09,819 INFO L78 Accepts]: Start accepts. Automaton has 7768 states and 12426 transitions. Word has length 148 [2019-10-13 23:02:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:09,820 INFO L462 AbstractCegarLoop]: Abstraction has 7768 states and 12426 transitions. [2019-10-13 23:02:09,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7768 states and 12426 transitions. [2019-10-13 23:02:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 23:02:09,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:09,824 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:10,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:10,032 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:10,032 INFO L82 PathProgramCache]: Analyzing trace with hash 641038106, now seen corresponding path program 1 times [2019-10-13 23:02:10,033 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:10,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939687913] [2019-10-13 23:02:10,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:10,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:10,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:02:10,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939687913] [2019-10-13 23:02:10,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609718634] [2019-10-13 23:02:10,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:10,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 23:02:10,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:02:10,822 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:02:10,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:10,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-13 23:02:10,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116356891] [2019-10-13 23:02:10,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:10,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:10,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:10,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:10,955 INFO L87 Difference]: Start difference. First operand 7768 states and 12426 transitions. Second operand 4 states. [2019-10-13 23:02:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:11,408 INFO L93 Difference]: Finished difference Result 15831 states and 26154 transitions. [2019-10-13 23:02:11,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:02:11,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2019-10-13 23:02:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:11,456 INFO L225 Difference]: With dead ends: 15831 [2019-10-13 23:02:11,456 INFO L226 Difference]: Without dead ends: 8114 [2019-10-13 23:02:11,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8114 states. [2019-10-13 23:02:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8114 to 8055. [2019-10-13 23:02:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8055 states. [2019-10-13 23:02:11,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 12883 transitions. [2019-10-13 23:02:11,975 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 12883 transitions. Word has length 150 [2019-10-13 23:02:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:11,976 INFO L462 AbstractCegarLoop]: Abstraction has 8055 states and 12883 transitions. [2019-10-13 23:02:11,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 12883 transitions. [2019-10-13 23:02:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-13 23:02:11,981 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:11,981 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:12,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:12,187 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:12,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:12,187 INFO L82 PathProgramCache]: Analyzing trace with hash -781078395, now seen corresponding path program 1 times [2019-10-13 23:02:12,187 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:12,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519355349] [2019-10-13 23:02:12,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:12,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:12,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:02:12,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519355349] [2019-10-13 23:02:12,320 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900799219] [2019-10-13 23:02:12,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true