/usr/bin/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_spec9_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:13:07,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:13:07,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:13:07,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:13:07,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:13:07,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:13:07,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:13:07,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:13:07,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:13:07,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:13:07,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:13:07,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:13:07,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:13:07,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:13:07,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:13:07,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:13:07,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:13:07,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:13:07,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:13:07,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:13:07,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:13:07,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:13:07,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:13:07,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:13:07,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:13:07,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:13:07,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:13:07,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:13:07,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:13:07,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:13:07,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:13:07,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:13:07,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:13:07,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:13:07,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:13:07,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:13:07,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:13:07,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:13:07,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:13:07,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:13:07,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:13:07,431 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 [2019-11-07 04:13:07,466 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:13:07,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:13:07,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:13:07,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:13:07,471 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:13:07,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:13:07,472 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:13:07,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:13:07,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:13:07,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:13:07,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:13:07,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:13:07,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:13:07,473 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:13:07,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:13:07,476 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:13:07,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:13:07,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:13:07,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:13:07,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:13:07,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:13:07,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:13:07,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:13:07,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:13:07,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:13:07,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:13:07,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:13:07,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:13:07,479 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 [2019-11-07 04:13:07,791 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:13:07,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:13:07,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:13:07,811 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:13:07,811 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:13:07,812 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2019-11-07 04:13:07,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027ddd87f/8db39908ce78406285151dab2f7393bc/FLAGfc28c1596 [2019-11-07 04:13:08,593 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:13:08,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product27.cil.c [2019-11-07 04:13:08,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027ddd87f/8db39908ce78406285151dab2f7393bc/FLAGfc28c1596 [2019-11-07 04:13:08,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/027ddd87f/8db39908ce78406285151dab2f7393bc [2019-11-07 04:13:08,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:13:08,846 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:13:08,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:08,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:13:08,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:13:08,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:08" (1/1) ... [2019-11-07 04:13:08,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce5549b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:08, skipping insertion in model container [2019-11-07 04:13:08,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:13:08" (1/1) ... [2019-11-07 04:13:08,862 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:13:08,946 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:13:09,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:09,775 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:13:09,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:13:10,049 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:13:10,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10 WrapperNode [2019-11-07 04:13:10,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:13:10,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:13:10,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:13:10,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:13:10,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (1/1) ... [2019-11-07 04:13:10,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:13:10,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:13:10,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:13:10,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:13:10,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (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 [2019-11-07 04:13:10,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:13:10,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:13:10,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:10,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:13:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:13:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:13:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:13:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:13:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:13:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:13:10,325 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:13:10,325 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:13:10,325 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:13:10,325 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:13:10,326 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:13:10,326 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:13:10,327 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:13:10,327 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:13:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:13:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:13:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:13:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:13:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:13:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:13:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:13:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:13:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:13:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:13:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:13:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:13:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:13:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:13:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:13:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:13:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:13:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:13:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:13:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:13:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:13:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:13:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:13:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:13:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:13:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:13:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:13:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:13:10,334 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:13:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:13:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:13:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:13:10,335 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:13:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:13:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:13:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:13:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:13:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:13:10,336 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:13:10,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:13:10,338 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:13:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:13:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:13:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:13:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:13:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:13:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:13:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:13:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:13:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:13:10,340 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:13:10,341 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:13:10,342 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:13:10,343 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:13:10,344 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:13:10,345 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:13:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:13:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:13:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:13:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:13:10,346 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:13:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:13:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:13:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:13:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:13:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-11-07 04:13:10,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-11-07 04:13:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:13:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:13:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:13:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:13:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:13:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:13:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:13:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:13:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:13:10,349 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:13:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:13:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:13:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:13:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:13:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:13:10,350 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:13:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:13:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:13:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:13:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:13:10,351 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:13:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:13:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:13:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:13:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:13:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:13:10,352 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:13:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-11-07 04:13:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:13:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:13:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:13:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:13:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:13:10,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:13:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:13:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:13:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:13:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:13:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:13:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-11-07 04:13:10,354 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:13:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:13:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:13:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:13:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:13:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:13:10,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:13:15,227 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:13:15,228 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:13:15,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:15 BoogieIcfgContainer [2019-11-07 04:13:15,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:13:15,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:13:15,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:13:15,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:13:15,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:13:08" (1/3) ... [2019-11-07 04:13:15,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f22683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:15, skipping insertion in model container [2019-11-07 04:13:15,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:13:10" (2/3) ... [2019-11-07 04:13:15,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f22683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:13:15, skipping insertion in model container [2019-11-07 04:13:15,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:13:15" (3/3) ... [2019-11-07 04:13:15,238 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.c [2019-11-07 04:13:15,248 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:13:15,257 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:13:15,269 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:13:15,299 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:13:15,300 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:13:15,300 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:13:15,300 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:13:15,300 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:13:15,300 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:13:15,300 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:13:15,301 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:13:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states. [2019-11-07 04:13:15,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:13:15,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:15,359 INFO L410 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] [2019-11-07 04:13:15,362 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:15,368 INFO L82 PathProgramCache]: Analyzing trace with hash 770298132, now seen corresponding path program 1 times [2019-11-07 04:13:15,377 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:15,378 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344873461] [2019-11-07 04:13:15,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:13:16,035 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344873461] [2019-11-07 04:13:16,037 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:16,037 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:13:16,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615382062] [2019-11-07 04:13:16,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:13:16,046 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:16,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:13:16,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:13:16,063 INFO L87 Difference]: Start difference. First operand 567 states. Second operand 2 states. [2019-11-07 04:13:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:16,135 INFO L93 Difference]: Finished difference Result 470 states and 694 transitions. [2019-11-07 04:13:16,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:13:16,137 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-11-07 04:13:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:16,162 INFO L225 Difference]: With dead ends: 470 [2019-11-07 04:13:16,163 INFO L226 Difference]: Without dead ends: 436 [2019-11-07 04:13:16,167 INFO L630 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 [2019-11-07 04:13:16,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-11-07 04:13:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2019-11-07 04:13:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2019-11-07 04:13:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 643 transitions. [2019-11-07 04:13:16,272 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 643 transitions. Word has length 112 [2019-11-07 04:13:16,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:16,280 INFO L462 AbstractCegarLoop]: Abstraction has 436 states and 643 transitions. [2019-11-07 04:13:16,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:13:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 643 transitions. [2019-11-07 04:13:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:13:16,292 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:16,292 INFO L410 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] [2019-11-07 04:13:16,292 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:16,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:16,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1750858834, now seen corresponding path program 1 times [2019-11-07 04:13:16,293 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:16,293 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54244776] [2019-11-07 04:13:16,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:13:16,648 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54244776] [2019-11-07 04:13:16,648 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:16,648 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:13:16,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572127717] [2019-11-07 04:13:16,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:13:16,652 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:16,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:13:16,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:16,654 INFO L87 Difference]: Start difference. First operand 436 states and 643 transitions. Second operand 7 states. [2019-11-07 04:13:20,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:20,550 INFO L93 Difference]: Finished difference Result 1235 states and 1866 transitions. [2019-11-07 04:13:20,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:13:20,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-11-07 04:13:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:20,561 INFO L225 Difference]: With dead ends: 1235 [2019-11-07 04:13:20,561 INFO L226 Difference]: Without dead ends: 841 [2019-11-07 04:13:20,570 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:13:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2019-11-07 04:13:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 816. [2019-11-07 04:13:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2019-11-07 04:13:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1229 transitions. [2019-11-07 04:13:20,684 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1229 transitions. Word has length 113 [2019-11-07 04:13:20,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:20,685 INFO L462 AbstractCegarLoop]: Abstraction has 816 states and 1229 transitions. [2019-11-07 04:13:20,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:13:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1229 transitions. [2019-11-07 04:13:20,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 04:13:20,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:20,691 INFO L410 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] [2019-11-07 04:13:20,696 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash -748436286, now seen corresponding path program 1 times [2019-11-07 04:13:20,697 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:20,697 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676395930] [2019-11-07 04:13:20,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:13:20,890 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676395930] [2019-11-07 04:13:20,890 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:20,891 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:20,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418478591] [2019-11-07 04:13:20,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:20,892 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:20,893 INFO L87 Difference]: Start difference. First operand 816 states and 1229 transitions. Second operand 3 states. [2019-11-07 04:13:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:21,010 INFO L93 Difference]: Finished difference Result 2322 states and 3567 transitions. [2019-11-07 04:13:21,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:21,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2019-11-07 04:13:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:21,029 INFO L225 Difference]: With dead ends: 2322 [2019-11-07 04:13:21,029 INFO L226 Difference]: Without dead ends: 1548 [2019-11-07 04:13:21,035 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-11-07 04:13:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1516. [2019-11-07 04:13:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2019-11-07 04:13:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2325 transitions. [2019-11-07 04:13:21,141 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2325 transitions. Word has length 117 [2019-11-07 04:13:21,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:21,142 INFO L462 AbstractCegarLoop]: Abstraction has 1516 states and 2325 transitions. [2019-11-07 04:13:21,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2325 transitions. [2019-11-07 04:13:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:13:21,145 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:21,146 INFO L410 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] [2019-11-07 04:13:21,146 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:21,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1727988114, now seen corresponding path program 1 times [2019-11-07 04:13:21,147 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:21,147 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385218882] [2019-11-07 04:13:21,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:13:21,322 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385218882] [2019-11-07 04:13:21,323 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:21,323 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:21,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91295157] [2019-11-07 04:13:21,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:21,324 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:21,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:21,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:21,325 INFO L87 Difference]: Start difference. First operand 1516 states and 2325 transitions. Second operand 3 states. [2019-11-07 04:13:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:21,490 INFO L93 Difference]: Finished difference Result 4423 states and 6892 transitions. [2019-11-07 04:13:21,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:21,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-11-07 04:13:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:21,514 INFO L225 Difference]: With dead ends: 4423 [2019-11-07 04:13:21,515 INFO L226 Difference]: Without dead ends: 2950 [2019-11-07 04:13:21,523 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2019-11-07 04:13:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2917. [2019-11-07 04:13:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2917 states. [2019-11-07 04:13:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4539 transitions. [2019-11-07 04:13:21,774 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4539 transitions. Word has length 118 [2019-11-07 04:13:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:21,775 INFO L462 AbstractCegarLoop]: Abstraction has 2917 states and 4539 transitions. [2019-11-07 04:13:21,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4539 transitions. [2019-11-07 04:13:21,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:13:21,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:21,782 INFO L410 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] [2019-11-07 04:13:21,782 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:21,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:21,783 INFO L82 PathProgramCache]: Analyzing trace with hash -2029319804, now seen corresponding path program 1 times [2019-11-07 04:13:21,783 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:21,784 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165461812] [2019-11-07 04:13:21,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:13:21,961 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165461812] [2019-11-07 04:13:21,961 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:21,961 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:21,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972718485] [2019-11-07 04:13:21,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:21,962 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:21,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:21,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:21,963 INFO L87 Difference]: Start difference. First operand 2917 states and 4539 transitions. Second operand 3 states. [2019-11-07 04:13:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:22,249 INFO L93 Difference]: Finished difference Result 8626 states and 13653 transitions. [2019-11-07 04:13:22,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:22,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-11-07 04:13:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:22,315 INFO L225 Difference]: With dead ends: 8626 [2019-11-07 04:13:22,315 INFO L226 Difference]: Without dead ends: 5754 [2019-11-07 04:13:22,336 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2019-11-07 04:13:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 5720. [2019-11-07 04:13:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5720 states. [2019-11-07 04:13:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 9043 transitions. [2019-11-07 04:13:22,795 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 9043 transitions. Word has length 119 [2019-11-07 04:13:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:22,797 INFO L462 AbstractCegarLoop]: Abstraction has 5720 states and 9043 transitions. [2019-11-07 04:13:22,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 9043 transitions. [2019-11-07 04:13:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:13:22,803 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:22,804 INFO L410 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] [2019-11-07 04:13:22,804 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1514303600, now seen corresponding path program 1 times [2019-11-07 04:13:22,805 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:22,806 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274170145] [2019-11-07 04:13:22,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:13:23,088 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274170145] [2019-11-07 04:13:23,089 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:23,089 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:23,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912092275] [2019-11-07 04:13:23,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:23,090 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:23,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:23,091 INFO L87 Difference]: Start difference. First operand 5720 states and 9043 transitions. Second operand 3 states. [2019-11-07 04:13:23,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:23,610 INFO L93 Difference]: Finished difference Result 17033 states and 27568 transitions. [2019-11-07 04:13:23,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:23,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2019-11-07 04:13:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:23,746 INFO L225 Difference]: With dead ends: 17033 [2019-11-07 04:13:23,746 INFO L226 Difference]: Without dead ends: 11362 [2019-11-07 04:13:23,793 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:23,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11362 states. [2019-11-07 04:13:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11362 to 11327. [2019-11-07 04:13:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11327 states. [2019-11-07 04:13:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11327 states to 11327 states and 18327 transitions. [2019-11-07 04:13:25,309 INFO L78 Accepts]: Start accepts. Automaton has 11327 states and 18327 transitions. Word has length 120 [2019-11-07 04:13:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:25,312 INFO L462 AbstractCegarLoop]: Abstraction has 11327 states and 18327 transitions. [2019-11-07 04:13:25,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 11327 states and 18327 transitions. [2019-11-07 04:13:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:13:25,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:25,316 INFO L410 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] [2019-11-07 04:13:25,316 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:25,316 INFO L82 PathProgramCache]: Analyzing trace with hash -302516666, now seen corresponding path program 1 times [2019-11-07 04:13:25,317 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:25,317 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106173056] [2019-11-07 04:13:25,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:13:25,510 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106173056] [2019-11-07 04:13:25,510 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:25,510 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:13:25,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859650985] [2019-11-07 04:13:25,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:13:25,512 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:25,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:13:25,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:25,513 INFO L87 Difference]: Start difference. First operand 11327 states and 18327 transitions. Second operand 3 states. [2019-11-07 04:13:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:25,979 INFO L93 Difference]: Finished difference Result 12064 states and 19602 transitions. [2019-11-07 04:13:25,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:13:25,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-11-07 04:13:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:26,154 INFO L225 Difference]: With dead ends: 12064 [2019-11-07 04:13:26,154 INFO L226 Difference]: Without dead ends: 12051 [2019-11-07 04:13:26,168 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:13:26,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12051 states. [2019-11-07 04:13:26,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12051 to 12021. [2019-11-07 04:13:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12021 states. [2019-11-07 04:13:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 19540 transitions. [2019-11-07 04:13:26,936 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 19540 transitions. Word has length 121 [2019-11-07 04:13:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:26,936 INFO L462 AbstractCegarLoop]: Abstraction has 12021 states and 19540 transitions. [2019-11-07 04:13:26,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:13:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 19540 transitions. [2019-11-07 04:13:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-07 04:13:26,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:26,944 INFO L410 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] [2019-11-07 04:13:26,945 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:26,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1945526170, now seen corresponding path program 1 times [2019-11-07 04:13:26,945 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:26,946 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422146450] [2019-11-07 04:13:26,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 04:13:27,140 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422146450] [2019-11-07 04:13:27,140 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:13:27,140 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:13:27,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148633619] [2019-11-07 04:13:27,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:13:27,141 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:27,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:13:27,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:13:27,142 INFO L87 Difference]: Start difference. First operand 12021 states and 19540 transitions. Second operand 5 states. [2019-11-07 04:13:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:27,630 INFO L93 Difference]: Finished difference Result 24186 states and 40014 transitions. [2019-11-07 04:13:27,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:13:27,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2019-11-07 04:13:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:27,707 INFO L225 Difference]: With dead ends: 24186 [2019-11-07 04:13:27,707 INFO L226 Difference]: Without dead ends: 12208 [2019-11-07 04:13:27,766 INFO L630 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 [2019-11-07 04:13:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12208 states. [2019-11-07 04:13:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12208 to 12205. [2019-11-07 04:13:28,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12205 states. [2019-11-07 04:13:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12205 states to 12205 states and 19886 transitions. [2019-11-07 04:13:28,697 INFO L78 Accepts]: Start accepts. Automaton has 12205 states and 19886 transitions. Word has length 186 [2019-11-07 04:13:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:28,697 INFO L462 AbstractCegarLoop]: Abstraction has 12205 states and 19886 transitions. [2019-11-07 04:13:28,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:13:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 12205 states and 19886 transitions. [2019-11-07 04:13:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-07 04:13:28,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:28,705 INFO L410 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] [2019-11-07 04:13:28,705 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:28,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:28,706 INFO L82 PathProgramCache]: Analyzing trace with hash -690902680, now seen corresponding path program 1 times [2019-11-07 04:13:28,706 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:28,706 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988642167] [2019-11-07 04:13:28,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 04:13:28,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988642167] [2019-11-07 04:13:28,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704074461] [2019-11-07 04:13:28,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:13:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:29,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 3443 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:13:29,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:13:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-07 04:13:29,761 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:13:30,037 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-11-07 04:13:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 04:13:30,432 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:13:30,432 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-11-07 04:13:30,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783453079] [2019-11-07 04:13:30,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:13:30,433 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:30,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:13:30,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:13:30,434 INFO L87 Difference]: Start difference. First operand 12205 states and 19886 transitions. Second operand 4 states. [2019-11-07 04:13:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:31,388 INFO L93 Difference]: Finished difference Result 25693 states and 43024 transitions. [2019-11-07 04:13:31,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:13:31,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2019-11-07 04:13:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:31,501 INFO L225 Difference]: With dead ends: 25693 [2019-11-07 04:13:31,502 INFO L226 Difference]: Without dead ends: 13531 [2019-11-07 04:13:31,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 381 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:13:31,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13531 states. [2019-11-07 04:13:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13531 to 13531. [2019-11-07 04:13:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13531 states. [2019-11-07 04:13:33,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13531 states to 13531 states and 22368 transitions. [2019-11-07 04:13:33,373 INFO L78 Accepts]: Start accepts. Automaton has 13531 states and 22368 transitions. Word has length 191 [2019-11-07 04:13:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:33,374 INFO L462 AbstractCegarLoop]: Abstraction has 13531 states and 22368 transitions. [2019-11-07 04:13:33,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:13:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 13531 states and 22368 transitions. [2019-11-07 04:13:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 04:13:33,385 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:33,386 INFO L410 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] [2019-11-07 04:13:33,600 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:13:33,600 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:33,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1861989226, now seen corresponding path program 1 times [2019-11-07 04:13:33,601 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:33,602 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255985867] [2019-11-07 04:13:33,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:13:33,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255985867] [2019-11-07 04:13:33,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714233296] [2019-11-07 04:13:33,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:13:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:34,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 3448 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:13:34,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:13:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 04:13:34,675 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:13:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:13:35,151 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:13:35,152 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-11-07 04:13:35,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024688959] [2019-11-07 04:13:35,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:13:35,153 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:13:35,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:13:35,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:13:35,153 INFO L87 Difference]: Start difference. First operand 13531 states and 22368 transitions. Second operand 4 states. [2019-11-07 04:13:35,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:13:35,944 INFO L93 Difference]: Finished difference Result 28345 states and 47954 transitions. [2019-11-07 04:13:35,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:13:35,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2019-11-07 04:13:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:13:36,037 INFO L225 Difference]: With dead ends: 28345 [2019-11-07 04:13:36,037 INFO L226 Difference]: Without dead ends: 14857 [2019-11-07 04:13:36,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:13:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14857 states. [2019-11-07 04:13:36,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 14857. [2019-11-07 04:13:36,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14857 states. [2019-11-07 04:13:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 24850 transitions. [2019-11-07 04:13:36,817 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 24850 transitions. Word has length 196 [2019-11-07 04:13:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:13:36,818 INFO L462 AbstractCegarLoop]: Abstraction has 14857 states and 24850 transitions. [2019-11-07 04:13:36,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:13:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 24850 transitions. [2019-11-07 04:13:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 04:13:36,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:13:36,826 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2019-11-07 04:13:37,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:13:37,043 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:13:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:13:37,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1726833670, now seen corresponding path program 1 times [2019-11-07 04:13:37,044 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:13:37,044 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379291042] [2019-11-07 04:13:37,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:13:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-11-07 04:13:37,251 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379291042] [2019-11-07 04:13:37,251 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538471525] [2019-11-07 04:13:37,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:13:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:13:38,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 3452 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:13:38,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:13:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 04:13:38,217 INFO L321 TraceCheckSpWp]: Computing backward predicates...