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_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:10,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:10,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:10,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:10,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:10,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:10,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:10,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:10,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:10,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:10,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:10,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:10,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:10,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:10,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:10,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:10,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:10,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:10,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:10,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:10,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:10,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:10,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:10,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:10,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:10,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:10,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:10,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:10,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:10,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:10,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:10,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:10,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:10,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:10,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:10,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:10,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:10,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:10,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:10,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:10,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:10,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:10,376 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:10,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:10,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:10,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:10,378 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:10,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:10,379 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:10,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:10,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:10,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:10,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:10,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:10,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:10,380 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:10,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:10,381 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:10,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:10,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:10,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:10,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:10,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:10,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:10,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:10,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:10,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:10,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:10,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:10,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:10,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:10,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:10,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:10,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:10,697 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:10,698 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:10,698 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product26.cil.c [2019-10-13 23:04:10,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee146e253/74736058479449fcbf8155ce3fec7497/FLAG676d01a8a [2019-10-13 23:04:11,469 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:11,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product26.cil.c [2019-10-13 23:04:11,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee146e253/74736058479449fcbf8155ce3fec7497/FLAG676d01a8a [2019-10-13 23:04:11,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee146e253/74736058479449fcbf8155ce3fec7497 [2019-10-13 23:04:11,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:11,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:11,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:11,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:11,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:11,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:11" (1/1) ... [2019-10-13 23:04:11,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4771d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11, skipping insertion in model container [2019-10-13 23:04:11,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:11" (1/1) ... [2019-10-13 23:04:11,667 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:11,761 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:12,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:12,507 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:12,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:12,671 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:12,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12 WrapperNode [2019-10-13 23:04:12,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:12,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:12,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:12,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:12,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... [2019-10-13 23:04:12,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:12,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:12,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:12,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:12,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:12,943 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:12,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:12,945 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:12,946 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:12,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:12,946 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:12,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:12,946 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:12,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-10-13 23:04:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-10-13 23:04:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:12,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:12,950 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:12,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:12,952 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:12,967 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-10-13 23:04:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-10-13 23:04:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:12,968 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:18,373 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:18,374 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:18,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:18 BoogieIcfgContainer [2019-10-13 23:04:18,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:18,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:18,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:18,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:18,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:11" (1/3) ... [2019-10-13 23:04:18,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298d914c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:18, skipping insertion in model container [2019-10-13 23:04:18,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:12" (2/3) ... [2019-10-13 23:04:18,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298d914c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:18, skipping insertion in model container [2019-10-13 23:04:18,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:18" (3/3) ... [2019-10-13 23:04:18,385 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product26.cil.c [2019-10-13 23:04:18,396 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:18,407 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:18,419 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:18,453 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:18,453 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:18,453 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:18,454 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:18,454 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:18,454 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:18,454 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:18,454 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states. [2019-10-13 23:04:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:04:18,506 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:18,507 INFO L380 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] [2019-10-13 23:04:18,510 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:18,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1452112933, now seen corresponding path program 1 times [2019-10-13 23:04:18,524 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:18,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280881474] [2019-10-13 23:04:18,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:18,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:18,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:19,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280881474] [2019-10-13 23:04:19,227 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:19,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:04:19,228 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173285056] [2019-10-13 23:04:19,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:04:19,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:19,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:04:19,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:19,252 INFO L87 Difference]: Start difference. First operand 564 states. Second operand 2 states. [2019-10-13 23:04:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:19,330 INFO L93 Difference]: Finished difference Result 461 states and 688 transitions. [2019-10-13 23:04:19,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:04:19,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 23:04:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:19,357 INFO L225 Difference]: With dead ends: 461 [2019-10-13 23:04:19,357 INFO L226 Difference]: Without dead ends: 427 [2019-10-13 23:04:19,362 INFO L600 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 [2019-10-13 23:04:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-13 23:04:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2019-10-13 23:04:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-13 23:04:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 637 transitions. [2019-10-13 23:04:19,470 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 637 transitions. Word has length 74 [2019-10-13 23:04:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:19,473 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 637 transitions. [2019-10-13 23:04:19,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:04:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 637 transitions. [2019-10-13 23:04:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 23:04:19,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:19,480 INFO L380 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] [2019-10-13 23:04:19,480 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:19,481 INFO L82 PathProgramCache]: Analyzing trace with hash -176499596, now seen corresponding path program 1 times [2019-10-13 23:04:19,481 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:19,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712504640] [2019-10-13 23:04:19,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:19,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:19,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:19,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712504640] [2019-10-13 23:04:19,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:19,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:04:19,823 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553315575] [2019-10-13 23:04:19,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:04:19,826 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:04:19,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:04:19,827 INFO L87 Difference]: Start difference. First operand 427 states and 637 transitions. Second operand 6 states. [2019-10-13 23:04:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:22,941 INFO L93 Difference]: Finished difference Result 1301 states and 2013 transitions. [2019-10-13 23:04:22,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:04:22,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2019-10-13 23:04:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:22,954 INFO L225 Difference]: With dead ends: 1301 [2019-10-13 23:04:22,954 INFO L226 Difference]: Without dead ends: 916 [2019-10-13 23:04:22,961 INFO L600 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 [2019-10-13 23:04:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2019-10-13 23:04:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 821. [2019-10-13 23:04:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-10-13 23:04:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1274 transitions. [2019-10-13 23:04:23,058 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1274 transitions. Word has length 75 [2019-10-13 23:04:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:23,060 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 1274 transitions. [2019-10-13 23:04:23,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:04:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1274 transitions. [2019-10-13 23:04:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 23:04:23,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:23,084 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:23,084 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1050688871, now seen corresponding path program 1 times [2019-10-13 23:04:23,085 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:23,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901117339] [2019-10-13 23:04:23,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:23,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:23,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901117339] [2019-10-13 23:04:23,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:23,399 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:04:23,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567563398] [2019-10-13 23:04:23,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:04:23,400 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:23,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:04:23,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:04:23,401 INFO L87 Difference]: Start difference. First operand 821 states and 1274 transitions. Second operand 12 states. [2019-10-13 23:04:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:30,778 INFO L93 Difference]: Finished difference Result 2446 states and 3831 transitions. [2019-10-13 23:04:30,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 23:04:30,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2019-10-13 23:04:30,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:30,807 INFO L225 Difference]: With dead ends: 2446 [2019-10-13 23:04:30,808 INFO L226 Difference]: Without dead ends: 1667 [2019-10-13 23:04:30,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 23:04:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2019-10-13 23:04:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1608. [2019-10-13 23:04:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2019-10-13 23:04:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2504 transitions. [2019-10-13 23:04:30,974 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2504 transitions. Word has length 102 [2019-10-13 23:04:30,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:30,974 INFO L462 AbstractCegarLoop]: Abstraction has 1608 states and 2504 transitions. [2019-10-13 23:04:30,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:04:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2504 transitions. [2019-10-13 23:04:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 23:04:30,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:30,979 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:30,980 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:30,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:30,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1040642516, now seen corresponding path program 1 times [2019-10-13 23:04:30,980 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:30,981 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044580204] [2019-10-13 23:04:30,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:30,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:30,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:31,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044580204] [2019-10-13 23:04:31,188 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:31,188 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:04:31,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856237723] [2019-10-13 23:04:31,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:04:31,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:31,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:04:31,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:31,192 INFO L87 Difference]: Start difference. First operand 1608 states and 2504 transitions. Second operand 8 states. [2019-10-13 23:04:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:31,355 INFO L93 Difference]: Finished difference Result 3454 states and 5464 transitions. [2019-10-13 23:04:31,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:04:31,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-13 23:04:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:31,374 INFO L225 Difference]: With dead ends: 3454 [2019-10-13 23:04:31,375 INFO L226 Difference]: Without dead ends: 1890 [2019-10-13 23:04:31,386 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:31,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2019-10-13 23:04:31,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1632. [2019-10-13 23:04:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2019-10-13 23:04:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2528 transitions. [2019-10-13 23:04:31,506 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2528 transitions. Word has length 103 [2019-10-13 23:04:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:31,507 INFO L462 AbstractCegarLoop]: Abstraction has 1632 states and 2528 transitions. [2019-10-13 23:04:31,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:04:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2528 transitions. [2019-10-13 23:04:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 23:04:31,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:31,512 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:31,512 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:31,513 INFO L82 PathProgramCache]: Analyzing trace with hash -443802238, now seen corresponding path program 1 times [2019-10-13 23:04:31,513 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:31,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835860564] [2019-10-13 23:04:31,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:31,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:31,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:31,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835860564] [2019-10-13 23:04:31,815 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:31,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:31,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345655806] [2019-10-13 23:04:31,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:31,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:31,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:31,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:31,817 INFO L87 Difference]: Start difference. First operand 1632 states and 2528 transitions. Second operand 7 states. [2019-10-13 23:04:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:35,406 INFO L93 Difference]: Finished difference Result 4473 states and 7017 transitions. [2019-10-13 23:04:35,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:04:35,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-13 23:04:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:35,432 INFO L225 Difference]: With dead ends: 4473 [2019-10-13 23:04:35,432 INFO L226 Difference]: Without dead ends: 2885 [2019-10-13 23:04:35,443 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:04:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2019-10-13 23:04:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2820. [2019-10-13 23:04:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2820 states. [2019-10-13 23:04:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 4445 transitions. [2019-10-13 23:04:35,615 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 4445 transitions. Word has length 107 [2019-10-13 23:04:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:35,616 INFO L462 AbstractCegarLoop]: Abstraction has 2820 states and 4445 transitions. [2019-10-13 23:04:35,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 4445 transitions. [2019-10-13 23:04:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-13 23:04:35,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:35,623 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:35,624 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:35,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1169992528, now seen corresponding path program 1 times [2019-10-13 23:04:35,625 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:35,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476915719] [2019-10-13 23:04:35,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:35,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:35,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:35,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476915719] [2019-10-13 23:04:35,790 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:35,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:35,791 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950250677] [2019-10-13 23:04:35,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:35,792 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:35,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:35,793 INFO L87 Difference]: Start difference. First operand 2820 states and 4445 transitions. Second operand 5 states. [2019-10-13 23:04:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:35,920 INFO L93 Difference]: Finished difference Result 4910 states and 7772 transitions. [2019-10-13 23:04:35,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:35,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2019-10-13 23:04:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:35,942 INFO L225 Difference]: With dead ends: 4910 [2019-10-13 23:04:35,942 INFO L226 Difference]: Without dead ends: 2884 [2019-10-13 23:04:35,954 INFO L600 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 [2019-10-13 23:04:35,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2019-10-13 23:04:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2860. [2019-10-13 23:04:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2860 states. [2019-10-13 23:04:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4495 transitions. [2019-10-13 23:04:36,129 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4495 transitions. Word has length 111 [2019-10-13 23:04:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:36,129 INFO L462 AbstractCegarLoop]: Abstraction has 2860 states and 4495 transitions. [2019-10-13 23:04:36,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:04:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4495 transitions. [2019-10-13 23:04:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-13 23:04:36,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:36,133 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:36,134 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:36,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:36,134 INFO L82 PathProgramCache]: Analyzing trace with hash 996206408, now seen corresponding path program 1 times [2019-10-13 23:04:36,134 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:36,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114086194] [2019-10-13 23:04:36,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:36,135 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:36,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:36,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114086194] [2019-10-13 23:04:36,367 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:36,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:36,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337994386] [2019-10-13 23:04:36,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:36,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:36,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:36,370 INFO L87 Difference]: Start difference. First operand 2860 states and 4495 transitions. Second operand 7 states. [2019-10-13 23:04:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:40,029 INFO L93 Difference]: Finished difference Result 6804 states and 10714 transitions. [2019-10-13 23:04:40,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:04:40,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-13 23:04:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:40,057 INFO L225 Difference]: With dead ends: 6804 [2019-10-13 23:04:40,057 INFO L226 Difference]: Without dead ends: 4546 [2019-10-13 23:04:40,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2019-10-13 23:04:40,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4482. [2019-10-13 23:04:40,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4482 states. [2019-10-13 23:04:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6891 transitions. [2019-10-13 23:04:40,319 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6891 transitions. Word has length 115 [2019-10-13 23:04:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:40,320 INFO L462 AbstractCegarLoop]: Abstraction has 4482 states and 6891 transitions. [2019-10-13 23:04:40,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6891 transitions. [2019-10-13 23:04:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:04:40,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:40,325 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:40,325 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:40,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:40,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1825621464, now seen corresponding path program 1 times [2019-10-13 23:04:40,326 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:40,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015994310] [2019-10-13 23:04:40,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:40,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:40,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:40,488 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015994310] [2019-10-13 23:04:40,489 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:40,489 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:40,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939415614] [2019-10-13 23:04:40,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:40,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:40,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:40,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:40,491 INFO L87 Difference]: Start difference. First operand 4482 states and 6891 transitions. Second operand 7 states. [2019-10-13 23:04:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:40,805 INFO L93 Difference]: Finished difference Result 8902 states and 13999 transitions. [2019-10-13 23:04:40,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:40,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-10-13 23:04:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:40,835 INFO L225 Difference]: With dead ends: 8902 [2019-10-13 23:04:40,836 INFO L226 Difference]: Without dead ends: 4482 [2019-10-13 23:04:40,861 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4482 states. [2019-10-13 23:04:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4482 to 4482. [2019-10-13 23:04:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4482 states. [2019-10-13 23:04:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6771 transitions. [2019-10-13 23:04:41,106 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6771 transitions. Word has length 118 [2019-10-13 23:04:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:41,108 INFO L462 AbstractCegarLoop]: Abstraction has 4482 states and 6771 transitions. [2019-10-13 23:04:41,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6771 transitions. [2019-10-13 23:04:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:04:41,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:41,112 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:04:41,116 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:41,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:41,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1374084091, now seen corresponding path program 1 times [2019-10-13 23:04:41,117 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:41,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050238020] [2019-10-13 23:04:41,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:41,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:41,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:41,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050238020] [2019-10-13 23:04:41,308 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:41,308 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:41,308 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114576901] [2019-10-13 23:04:41,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:41,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:41,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:41,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:41,310 INFO L87 Difference]: Start difference. First operand 4482 states and 6771 transitions. Second operand 7 states.