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_spec2_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:17:20,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:17:20,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:17:20,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:17:20,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:17:20,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:17:20,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:17:20,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:17:20,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:17:20,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:17:20,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:17:20,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:17:20,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:17:20,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:17:20,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:17:20,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:17:20,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:17:20,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:17:20,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:17:20,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:17:20,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:17:20,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:17:20,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:17:20,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:17:20,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:17:20,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:17:20,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:17:20,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:17:20,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:17:20,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:17:20,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:17:20,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:17:20,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:17:20,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:17:20,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:17:20,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:17:20,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:17:20,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:17:20,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:17:20,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:17:20,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:17:20,308 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 [2019-10-07 14:17:20,340 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:17:20,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:17:20,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:17:20,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:17:20,343 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:17:20,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:17:20,343 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:17:20,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:17:20,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:17:20,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:17:20,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:17:20,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:17:20,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:17:20,344 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:17:20,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:17:20,345 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:17:20,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:17:20,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:17:20,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:17:20,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:17:20,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:17:20,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:17:20,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:17:20,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:17:20,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:17:20,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:17:20,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:17:20,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:17:20,348 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 [2019-10-07 14:17:20,624 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:17:20,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:17:20,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:17:20,645 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:17:20,646 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:17:20,647 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product20.cil.c [2019-10-07 14:17:20,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af597425/dddcb50b822a490ab140356487969cb8/FLAG20300a58a [2019-10-07 14:17:21,383 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:17:21,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product20.cil.c [2019-10-07 14:17:21,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af597425/dddcb50b822a490ab140356487969cb8/FLAG20300a58a [2019-10-07 14:17:21,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af597425/dddcb50b822a490ab140356487969cb8 [2019-10-07 14:17:21,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:17:21,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:17:21,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:17:21,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:17:21,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:17:21,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:17:21" (1/1) ... [2019-10-07 14:17:21,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54803c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:21, skipping insertion in model container [2019-10-07 14:17:21,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:17:21" (1/1) ... [2019-10-07 14:17:21,600 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:17:21,687 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:17:22,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:17:22,522 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:17:22,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:17:22,739 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:17:22,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22 WrapperNode [2019-10-07 14:17:22,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:17:22,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:17:22,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:17:22,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:17:22,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (1/1) ... [2019-10-07 14:17:22,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (1/1) ... [2019-10-07 14:17:22,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (1/1) ... [2019-10-07 14:17:22,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (1/1) ... [2019-10-07 14:17:22,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (1/1) ... [2019-10-07 14:17:22,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (1/1) ... [2019-10-07 14:17:22,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (1/1) ... [2019-10-07 14:17:22,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:17:22,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:17:22,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:17:22,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:17:22,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (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 [2019-10-07 14:17:23,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:17:23,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:17:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:17:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:17:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:17:23,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:17:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:17:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:17:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:17:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:17:23,038 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:17:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:17:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:17:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:17:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:17:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:17:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:17:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:17:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:17:23,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:17:23,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:17:23,045 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:17:23,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:17:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 14:17:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:17:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:17:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:17:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 14:17:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:17:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:17:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:17:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-07 14:17:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:17:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-07 14:17:23,047 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:17:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:17:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:17:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:17:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:17:23,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:17:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:17:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:17:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:17:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:17:23,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:17:23,050 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:17:23,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:17:23,050 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:17:23,050 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:17:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:17:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:17:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:17:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:17:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:17:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:17:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:17:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:17:23,053 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:17:23,053 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:17:23,054 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:17:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:17:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:17:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:17:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:17:23,056 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:17:23,056 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:17:23,056 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:17:23,056 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:17:23,057 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:17:23,057 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:17:23,057 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:17:23,057 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:17:23,058 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:17:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:17:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:17:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:17:23,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:17:23,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:17:23,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:17:23,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:17:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:17:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:17:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:17:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:17:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:17:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:17:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:17:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:17:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:17:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:17:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:17:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:17:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:17:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:17:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:17:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:17:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:17:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:17:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:17:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:17:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:17:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:17:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:17:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:17:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:17:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:17:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:17:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:17:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:17:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:17:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:17:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:17:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:17:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:17:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:17:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:17:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:17:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 14:17:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:17:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:17:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 14:17:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:17:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:17:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:17:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-07 14:17:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-07 14:17:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:17:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:17:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:17:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:17:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:17:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:17:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:17:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:17:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:17:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:17:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:17:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:17:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:17:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:17:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:17:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:17:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:17:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:17:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:17:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:17:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:17:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:17:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:17:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:17:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:17:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:17:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:17:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:17:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:17:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:17:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:17:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:17:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:17:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:17:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:17:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:17:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:17:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:17:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:17:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:17:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:17:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:17:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:17:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:17:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:17:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:17:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:17:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:17:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:17:28,244 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:17:28,244 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:17:28,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:17:28 BoogieIcfgContainer [2019-10-07 14:17:28,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:17:28,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:17:28,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:17:28,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:17:28,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:17:21" (1/3) ... [2019-10-07 14:17:28,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305268ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:17:28, skipping insertion in model container [2019-10-07 14:17:28,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:17:22" (2/3) ... [2019-10-07 14:17:28,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305268ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:17:28, skipping insertion in model container [2019-10-07 14:17:28,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:17:28" (3/3) ... [2019-10-07 14:17:28,254 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2019-10-07 14:17:28,264 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:17:28,274 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:17:28,285 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:17:28,317 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:17:28,318 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:17:28,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:17:28,318 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:17:28,318 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:17:28,318 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:17:28,318 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:17:28,319 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:17:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states. [2019-10-07 14:17:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-07 14:17:28,365 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:28,366 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:28,368 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:28,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1883644735, now seen corresponding path program 1 times [2019-10-07 14:17:28,383 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:28,383 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:28,384 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:28,384 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:17:28,960 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:28,960 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:28,960 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 14:17:28,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 14:17:28,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 14:17:28,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:17:28,982 INFO L87 Difference]: Start difference. First operand 584 states. Second operand 2 states. [2019-10-07 14:17:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:29,052 INFO L93 Difference]: Finished difference Result 481 states and 716 transitions. [2019-10-07 14:17:29,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 14:17:29,054 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-07 14:17:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:29,081 INFO L225 Difference]: With dead ends: 481 [2019-10-07 14:17:29,082 INFO L226 Difference]: Without dead ends: 447 [2019-10-07 14:17:29,086 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:17:29,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-10-07 14:17:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2019-10-07 14:17:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2019-10-07 14:17:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 665 transitions. [2019-10-07 14:17:29,183 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 665 transitions. Word has length 74 [2019-10-07 14:17:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:29,185 INFO L462 AbstractCegarLoop]: Abstraction has 447 states and 665 transitions. [2019-10-07 14:17:29,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 14:17:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 665 transitions. [2019-10-07 14:17:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-07 14:17:29,191 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:29,191 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:29,191 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1118354277, now seen corresponding path program 1 times [2019-10-07 14:17:29,192 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:29,192 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:29,192 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:29,193 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:17:29,528 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:29,529 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:29,529 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 14:17:29,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:17:29,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:17:29,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:17:29,538 INFO L87 Difference]: Start difference. First operand 447 states and 665 transitions. Second operand 6 states. [2019-10-07 14:17:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:32,992 INFO L93 Difference]: Finished difference Result 1366 states and 2101 transitions. [2019-10-07 14:17:32,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:17:32,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-07 14:17:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:33,005 INFO L225 Difference]: With dead ends: 1366 [2019-10-07 14:17:33,005 INFO L226 Difference]: Without dead ends: 961 [2019-10-07 14:17:33,012 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:17:33,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-07 14:17:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 868. [2019-10-07 14:17:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-10-07 14:17:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1337 transitions. [2019-10-07 14:17:33,114 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1337 transitions. Word has length 75 [2019-10-07 14:17:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:33,115 INFO L462 AbstractCegarLoop]: Abstraction has 868 states and 1337 transitions. [2019-10-07 14:17:33,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:17:33,115 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1337 transitions. [2019-10-07 14:17:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-07 14:17:33,126 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:33,127 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:33,127 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:33,128 INFO L82 PathProgramCache]: Analyzing trace with hash -221211321, now seen corresponding path program 1 times [2019-10-07 14:17:33,128 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:33,128 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:33,128 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:33,129 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:17:33,488 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:33,489 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:33,489 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:17:33,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:17:33,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:17:33,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:17:33,490 INFO L87 Difference]: Start difference. First operand 868 states and 1337 transitions. Second operand 4 states. [2019-10-07 14:17:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:35,231 INFO L93 Difference]: Finished difference Result 2172 states and 3408 transitions. [2019-10-07 14:17:35,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:17:35,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-07 14:17:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:35,250 INFO L225 Difference]: With dead ends: 2172 [2019-10-07 14:17:35,250 INFO L226 Difference]: Without dead ends: 1346 [2019-10-07 14:17:35,256 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:17:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2019-10-07 14:17:35,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1293. [2019-10-07 14:17:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1293 states. [2019-10-07 14:17:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2013 transitions. [2019-10-07 14:17:35,412 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2013 transitions. Word has length 123 [2019-10-07 14:17:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:35,414 INFO L462 AbstractCegarLoop]: Abstraction has 1293 states and 2013 transitions. [2019-10-07 14:17:35,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:17:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2013 transitions. [2019-10-07 14:17:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-07 14:17:35,427 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:35,428 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:35,428 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:35,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:35,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1730704982, now seen corresponding path program 1 times [2019-10-07 14:17:35,429 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:35,429 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:35,429 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:35,429 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:17:35,666 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:35,666 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:35,666 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:17:35,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:17:35,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:17:35,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:17:35,668 INFO L87 Difference]: Start difference. First operand 1293 states and 2013 transitions. Second operand 4 states. [2019-10-07 14:17:37,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:37,581 INFO L93 Difference]: Finished difference Result 3455 states and 5482 transitions. [2019-10-07 14:17:37,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:17:37,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-07 14:17:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:37,605 INFO L225 Difference]: With dead ends: 3455 [2019-10-07 14:17:37,605 INFO L226 Difference]: Without dead ends: 2205 [2019-10-07 14:17:37,615 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:17:37,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2019-10-07 14:17:37,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2139. [2019-10-07 14:17:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2019-10-07 14:17:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3368 transitions. [2019-10-07 14:17:37,795 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3368 transitions. Word has length 124 [2019-10-07 14:17:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:37,797 INFO L462 AbstractCegarLoop]: Abstraction has 2139 states and 3368 transitions. [2019-10-07 14:17:37,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:17:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3368 transitions. [2019-10-07 14:17:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-07 14:17:37,802 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:37,802 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:37,803 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:37,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1279656169, now seen corresponding path program 1 times [2019-10-07 14:17:37,804 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:37,804 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:37,804 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:37,804 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:17:38,059 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:38,059 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:38,059 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-07 14:17:38,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 14:17:38,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 14:17:38,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:17:38,061 INFO L87 Difference]: Start difference. First operand 2139 states and 3368 transitions. Second operand 12 states. [2019-10-07 14:17:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:46,175 INFO L93 Difference]: Finished difference Result 6831 states and 10918 transitions. [2019-10-07 14:17:46,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-07 14:17:46,176 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 124 [2019-10-07 14:17:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:46,210 INFO L225 Difference]: With dead ends: 6831 [2019-10-07 14:17:46,211 INFO L226 Difference]: Without dead ends: 4734 [2019-10-07 14:17:46,224 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-07 14:17:46,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2019-10-07 14:17:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 4601. [2019-10-07 14:17:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2019-10-07 14:17:46,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 7266 transitions. [2019-10-07 14:17:46,580 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 7266 transitions. Word has length 124 [2019-10-07 14:17:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:46,581 INFO L462 AbstractCegarLoop]: Abstraction has 4601 states and 7266 transitions. [2019-10-07 14:17:46,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 14:17:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 7266 transitions. [2019-10-07 14:17:46,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:17:46,589 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:46,589 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:17:46,590 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:46,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2110572137, now seen corresponding path program 1 times [2019-10-07 14:17:46,592 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:46,592 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:46,592 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:46,593 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:17:46,876 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:46,877 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:46,889 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:17:46,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:17:46,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:17:46,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:17:46,891 INFO L87 Difference]: Start difference. First operand 4601 states and 7266 transitions. Second operand 4 states. [2019-10-07 14:17:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:48,860 INFO L93 Difference]: Finished difference Result 13150 states and 21872 transitions. [2019-10-07 14:17:48,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:17:48,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-07 14:17:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:48,934 INFO L225 Difference]: With dead ends: 13150 [2019-10-07 14:17:48,934 INFO L226 Difference]: Without dead ends: 8594 [2019-10-07 14:17:48,965 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:17:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2019-10-07 14:17:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8415. [2019-10-07 14:17:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8415 states. [2019-10-07 14:17:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8415 states to 8415 states and 13726 transitions. [2019-10-07 14:17:49,672 INFO L78 Accepts]: Start accepts. Automaton has 8415 states and 13726 transitions. Word has length 125 [2019-10-07 14:17:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:49,677 INFO L462 AbstractCegarLoop]: Abstraction has 8415 states and 13726 transitions. [2019-10-07 14:17:49,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:17:49,678 INFO L276 IsEmpty]: Start isEmpty. Operand 8415 states and 13726 transitions. [2019-10-07 14:17:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-07 14:17:49,684 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:49,685 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:17:49,685 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:49,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:49,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1001555960, now seen corresponding path program 1 times [2019-10-07 14:17:49,686 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:49,687 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:49,687 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:49,687 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:17:49,922 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:49,922 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:49,923 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:17:49,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:17:49,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:17:49,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:17:49,925 INFO L87 Difference]: Start difference. First operand 8415 states and 13726 transitions. Second operand 4 states. [2019-10-07 14:17:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:52,133 INFO L93 Difference]: Finished difference Result 24755 states and 43841 transitions. [2019-10-07 14:17:52,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:17:52,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2019-10-07 14:17:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:52,277 INFO L225 Difference]: With dead ends: 24755 [2019-10-07 14:17:52,277 INFO L226 Difference]: Without dead ends: 16389 [2019-10-07 14:17:52,340 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:17:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16389 states. [2019-10-07 14:17:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16389 to 16081. [2019-10-07 14:17:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16081 states. [2019-10-07 14:17:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16081 states to 16081 states and 27694 transitions. [2019-10-07 14:17:53,661 INFO L78 Accepts]: Start accepts. Automaton has 16081 states and 27694 transitions. Word has length 126 [2019-10-07 14:17:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:17:53,662 INFO L462 AbstractCegarLoop]: Abstraction has 16081 states and 27694 transitions. [2019-10-07 14:17:53,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:17:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 16081 states and 27694 transitions. [2019-10-07 14:17:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 14:17:53,666 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:17:53,666 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:17:53,666 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:17:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:17:53,667 INFO L82 PathProgramCache]: Analyzing trace with hash 981796747, now seen corresponding path program 1 times [2019-10-07 14:17:53,667 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:17:53,667 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:53,668 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:53,668 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:17:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:17:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:17:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:17:53,843 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:17:53,843 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:17:53,843 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:17:53,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:17:53,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:17:53,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:17:53,845 INFO L87 Difference]: Start difference. First operand 16081 states and 27694 transitions. Second operand 4 states. [2019-10-07 14:17:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:17:57,214 INFO L93 Difference]: Finished difference Result 48143 states and 94219 transitions. [2019-10-07 14:17:57,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:17:57,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-07 14:17:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:17:57,538 INFO L225 Difference]: With dead ends: 48143 [2019-10-07 14:17:57,539 INFO L226 Difference]: Without dead ends: 32107 [2019-10-07 14:17:57,633 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:17:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32107 states. [2019-10-07 14:18:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32107 to 31194. [2019-10-07 14:18:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31194 states. [2019-10-07 14:18:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31194 states to 31194 states and 57583 transitions. [2019-10-07 14:18:01,626 INFO L78 Accepts]: Start accepts. Automaton has 31194 states and 57583 transitions. Word has length 127 [2019-10-07 14:18:01,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:01,627 INFO L462 AbstractCegarLoop]: Abstraction has 31194 states and 57583 transitions. [2019-10-07 14:18:01,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:18:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 31194 states and 57583 transitions. [2019-10-07 14:18:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-07 14:18:01,639 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:01,639 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:18:01,640 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:01,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:01,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1711135464, now seen corresponding path program 1 times [2019-10-07 14:18:01,640 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:01,641 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:01,641 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:01,641 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:18:01,855 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:01,855 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:01,856 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:18:01,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:18:01,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:18:01,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:01,857 INFO L87 Difference]: Start difference. First operand 31194 states and 57583 transitions. Second operand 5 states. [2019-10-07 14:18:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:03,975 INFO L93 Difference]: Finished difference Result 62741 states and 121600 transitions. [2019-10-07 14:18:03,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:18:03,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2019-10-07 14:18:03,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:04,209 INFO L225 Difference]: With dead ends: 62741 [2019-10-07 14:18:04,209 INFO L226 Difference]: Without dead ends: 31590 [2019-10-07 14:18:04,342 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31590 states. [2019-10-07 14:18:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31590 to 31524. [2019-10-07 14:18:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31524 states. [2019-10-07 14:18:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31524 states to 31524 states and 57913 transitions. [2019-10-07 14:18:06,681 INFO L78 Accepts]: Start accepts. Automaton has 31524 states and 57913 transitions. Word has length 191 [2019-10-07 14:18:06,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:06,682 INFO L462 AbstractCegarLoop]: Abstraction has 31524 states and 57913 transitions. [2019-10-07 14:18:06,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:18:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 31524 states and 57913 transitions. [2019-10-07 14:18:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-07 14:18:06,694 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:06,694 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:18:06,694 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:06,695 INFO L82 PathProgramCache]: Analyzing trace with hash 415552486, now seen corresponding path program 1 times [2019-10-07 14:18:06,695 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:06,695 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:06,696 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:06,696 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:18:06,935 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:06,935 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:18:06,936 INFO L95 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 [2019-10-07 14:18:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:07,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 3702 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:18:07,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:18:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-07 14:18:08,122 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:18:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:18:08,760 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:18:08,760 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:18:08,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:18:08,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:18:08,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:18:08,762 INFO L87 Difference]: Start difference. First operand 31524 states and 57913 transitions. Second operand 4 states. [2019-10-07 14:18:10,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:10,787 INFO L93 Difference]: Finished difference Result 64292 states and 124734 transitions. [2019-10-07 14:18:10,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:18:10,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2019-10-07 14:18:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:12,801 INFO L225 Difference]: With dead ends: 64292 [2019-10-07 14:18:12,802 INFO L226 Difference]: Without dead ends: 32811 [2019-10-07 14:18:13,017 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 391 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:18:13,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32811 states. [2019-10-07 14:18:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32811 to 32811. [2019-10-07 14:18:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32811 states. [2019-10-07 14:18:15,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32811 states to 32811 states and 60322 transitions. [2019-10-07 14:18:15,657 INFO L78 Accepts]: Start accepts. Automaton has 32811 states and 60322 transitions. Word has length 196 [2019-10-07 14:18:15,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:15,658 INFO L462 AbstractCegarLoop]: Abstraction has 32811 states and 60322 transitions. [2019-10-07 14:18:15,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:18:15,659 INFO L276 IsEmpty]: Start isEmpty. Operand 32811 states and 60322 transitions. [2019-10-07 14:18:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-07 14:18:15,673 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:15,673 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:18:16,127 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:18:16,128 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:16,128 INFO L82 PathProgramCache]: Analyzing trace with hash 294548371, now seen corresponding path program 1 times [2019-10-07 14:18:16,129 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:16,129 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:16,129 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:16,129 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:16,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-07 14:18:16,371 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:16,371 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:16,371 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:18:16,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:18:16,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:18:16,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:16,374 INFO L87 Difference]: Start difference. First operand 32811 states and 60322 transitions. Second operand 5 states. [2019-10-07 14:18:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:21,900 INFO L93 Difference]: Finished difference Result 106860 states and 212203 transitions. [2019-10-07 14:18:21,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:18:21,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2019-10-07 14:18:21,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:22,457 INFO L225 Difference]: With dead ends: 106860 [2019-10-07 14:18:22,457 INFO L226 Difference]: Without dead ends: 74092 [2019-10-07 14:18:22,596 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:18:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74092 states. [2019-10-07 14:18:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74092 to 72623. [2019-10-07 14:18:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72623 states. [2019-10-07 14:18:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72623 states to 72623 states and 141150 transitions. [2019-10-07 14:18:28,869 INFO L78 Accepts]: Start accepts. Automaton has 72623 states and 141150 transitions. Word has length 216 [2019-10-07 14:18:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:28,870 INFO L462 AbstractCegarLoop]: Abstraction has 72623 states and 141150 transitions. [2019-10-07 14:18:28,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:18:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 72623 states and 141150 transitions. [2019-10-07 14:18:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-07 14:18:28,880 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:28,881 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:18:28,881 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:28,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:28,881 INFO L82 PathProgramCache]: Analyzing trace with hash -118942539, now seen corresponding path program 1 times [2019-10-07 14:18:28,882 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:28,882 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:28,882 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:28,882 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-07 14:18:29,104 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:29,104 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:29,105 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:18:29,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:18:29,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:18:29,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:29,107 INFO L87 Difference]: Start difference. First operand 72623 states and 141150 transitions. Second operand 5 states. [2019-10-07 14:18:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:18:39,829 INFO L93 Difference]: Finished difference Result 229829 states and 494682 transitions. [2019-10-07 14:18:39,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:18:39,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2019-10-07 14:18:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:18:40,681 INFO L225 Difference]: With dead ends: 229829 [2019-10-07 14:18:40,682 INFO L226 Difference]: Without dead ends: 157249 [2019-10-07 14:18:40,896 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:18:41,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157249 states. [2019-10-07 14:18:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157249 to 154632. [2019-10-07 14:18:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154632 states. [2019-10-07 14:18:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154632 states to 154632 states and 323976 transitions. [2019-10-07 14:18:55,236 INFO L78 Accepts]: Start accepts. Automaton has 154632 states and 323976 transitions. Word has length 216 [2019-10-07 14:18:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:18:55,237 INFO L462 AbstractCegarLoop]: Abstraction has 154632 states and 323976 transitions. [2019-10-07 14:18:55,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:18:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 154632 states and 323976 transitions. [2019-10-07 14:18:55,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-07 14:18:55,247 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:18:55,250 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:18:55,250 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:18:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:18:55,250 INFO L82 PathProgramCache]: Analyzing trace with hash 757300545, now seen corresponding path program 1 times [2019-10-07 14:18:55,251 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:18:55,251 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:55,251 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:55,251 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:18:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:18:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:18:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-07 14:18:55,459 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:18:55,459 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:18:55,459 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:18:55,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:18:55,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:18:55,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:18:55,461 INFO L87 Difference]: Start difference. First operand 154632 states and 323976 transitions. Second operand 5 states. [2019-10-07 14:19:14,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:19:14,500 INFO L93 Difference]: Finished difference Result 479333 states and 1152727 transitions. [2019-10-07 14:19:14,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:19:14,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2019-10-07 14:19:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:19:24,485 INFO L225 Difference]: With dead ends: 479333 [2019-10-07 14:19:24,485 INFO L226 Difference]: Without dead ends: 324744 [2019-10-07 14:19:24,942 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:19:25,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324744 states. [2019-10-07 14:19:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324744 to 318321. [2019-10-07 14:19:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318321 states. [2019-10-07 14:19:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318321 states to 318321 states and 734331 transitions. [2019-10-07 14:19:58,170 INFO L78 Accepts]: Start accepts. Automaton has 318321 states and 734331 transitions. Word has length 216 [2019-10-07 14:19:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:19:58,171 INFO L462 AbstractCegarLoop]: Abstraction has 318321 states and 734331 transitions. [2019-10-07 14:19:58,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:19:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 318321 states and 734331 transitions. [2019-10-07 14:19:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-07 14:19:58,180 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:19:58,180 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:19:58,180 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:19:58,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:19:58,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1502188655, now seen corresponding path program 1 times [2019-10-07 14:19:58,181 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:19:58,181 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:58,181 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:58,182 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:19:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:19:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:19:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:19:58,397 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:19:58,397 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:19:58,397 INFO L95 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 [2019-10-07 14:20:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:08,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 3707 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:20:08,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:20:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:20:08,592 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:20:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:20:09,063 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:20:09,064 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:20:09,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:20:09,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:20:09,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:09,065 INFO L87 Difference]: Start difference. First operand 318321 states and 734331 transitions. Second operand 4 states. [2019-10-07 14:20:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:38,604 INFO L93 Difference]: Finished difference Result 655358 states and 1707739 transitions. [2019-10-07 14:20:38,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:20:38,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2019-10-07 14:20:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:41,678 INFO L225 Difference]: With dead ends: 655358 [2019-10-07 14:20:41,678 INFO L226 Difference]: Without dead ends: 337080 [2019-10-07 14:20:43,713 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 399 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:20:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337080 states. [2019-10-07 14:21:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337080 to 337080. [2019-10-07 14:21:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337080 states. [2019-10-07 14:21:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337080 states to 337080 states and 769444 transitions. [2019-10-07 14:21:29,214 INFO L78 Accepts]: Start accepts. Automaton has 337080 states and 769444 transitions. Word has length 201 [2019-10-07 14:21:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:29,214 INFO L462 AbstractCegarLoop]: Abstraction has 337080 states and 769444 transitions. [2019-10-07 14:21:29,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:29,214 INFO L276 IsEmpty]: Start isEmpty. Operand 337080 states and 769444 transitions. [2019-10-07 14:21:29,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-07 14:21:29,224 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:29,224 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:21:29,436 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:21:29,436 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1740099341, now seen corresponding path program 1 times [2019-10-07 14:21:29,437 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:29,437 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:29,437 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:29,437 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:21:29,674 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:29,674 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:29,674 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:21:29,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:21:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:21:29,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:29,676 INFO L87 Difference]: Start difference. First operand 337080 states and 769444 transitions. Second operand 5 states. [2019-10-07 14:22:36,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:36,508 INFO L93 Difference]: Finished difference Result 1088723 states and 2913753 transitions. [2019-10-07 14:22:36,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:22:36,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2019-10-07 14:22:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:59,417 INFO L225 Difference]: With dead ends: 1088723 [2019-10-07 14:22:59,417 INFO L226 Difference]: Without dead ends: 751686 [2019-10-07 14:23:02,462 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:23:03,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751686 states.