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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:02,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:02,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:02,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:02,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:02,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:02,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:02,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:02,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:02,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:02,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:02,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:02,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:02,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:02,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:02,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:02,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:02,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:02,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:02,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:02,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:02,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:02,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:02,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:02,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:02,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:02,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:02,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:02,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:02,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:02,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:02,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:02,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:02,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:02,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:02,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:02,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:02,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:02,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:02,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:02,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:02,266 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 23:04:02,286 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:02,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:02,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:02,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:02,289 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:02,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:02,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:02,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:02,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:02,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:02,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:02,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:02,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:02,292 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:02,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:02,292 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:02,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:02,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:02,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:02,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:02,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:02,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:02,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:02,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:02,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:02,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:02,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:02,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:02,294 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 23:04:02,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:02,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:02,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:02,654 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:02,655 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:02,655 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2019-10-13 23:04:02,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae4baf8cb/cab8653916d447669547d1d017afea88/FLAGfb86ff044 [2019-10-13 23:04:03,268 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:03,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2019-10-13 23:04:03,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae4baf8cb/cab8653916d447669547d1d017afea88/FLAGfb86ff044 [2019-10-13 23:04:03,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae4baf8cb/cab8653916d447669547d1d017afea88 [2019-10-13 23:04:03,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:03,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:03,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:03,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:03,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:03,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:03" (1/1) ... [2019-10-13 23:04:03,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31959f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:03, skipping insertion in model container [2019-10-13 23:04:03,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:03" (1/1) ... [2019-10-13 23:04:03,552 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:03,623 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:04,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:04,314 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:04,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:04,501 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:04,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04 WrapperNode [2019-10-13 23:04:04,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:04,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:04,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:04,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:04,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (1/1) ... [2019-10-13 23:04:04,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (1/1) ... [2019-10-13 23:04:04,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (1/1) ... [2019-10-13 23:04:04,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (1/1) ... [2019-10-13 23:04:04,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (1/1) ... [2019-10-13 23:04:04,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (1/1) ... [2019-10-13 23:04:04,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (1/1) ... [2019-10-13 23:04:04,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:04,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:04,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:04,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:04,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (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 23:04:04,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:04,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:04,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:04,785 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:04,786 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:04,788 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:04,788 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:04,792 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:04,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:04,794 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:04,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:04,794 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:04,795 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:04,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:04,795 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:04,796 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:04,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:04,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:04,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:04,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:04,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:04,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:04,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:04,798 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:04,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:04,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:04,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:04,798 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:04,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:04,799 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:04,799 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:04,799 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:04,799 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:04,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:04,800 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:04,800 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:04,800 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:04,800 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:04,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:04,801 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:04,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:04,801 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:04,801 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:04,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:04,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:04,802 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:04,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:04,802 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:04,803 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:04,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:04,803 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:04,803 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:04,804 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:04,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:04,804 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:04,804 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:04:04,804 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:04,804 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 23:04:04,805 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:04,805 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:04,805 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:04,806 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:04,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:04,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:04,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:04,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:04,812 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:04,813 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:04,814 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:04,815 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:04,816 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:04,817 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:04,818 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:04,819 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:04,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:04,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:04,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:04,837 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:04,838 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 23:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:04,839 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:04,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:09,659 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:09,659 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:09,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:09 BoogieIcfgContainer [2019-10-13 23:04:09,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:09,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:09,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:09,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:09,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:03" (1/3) ... [2019-10-13 23:04:09,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bda9e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:09, skipping insertion in model container [2019-10-13 23:04:09,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:04" (2/3) ... [2019-10-13 23:04:09,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bda9e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:09, skipping insertion in model container [2019-10-13 23:04:09,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:09" (3/3) ... [2019-10-13 23:04:09,669 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2019-10-13 23:04:09,678 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:09,687 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:09,698 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:09,728 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:09,728 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:09,728 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:09,728 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:09,728 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:09,728 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:09,729 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:09,729 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states. [2019-10-13 23:04:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:04:09,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:09,775 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 23:04:09,777 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:09,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:09,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1540837119, now seen corresponding path program 1 times [2019-10-13 23:04:09,792 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:09,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705611434] [2019-10-13 23:04:09,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:09,793 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:09,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:10,357 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 23:04:10,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705611434] [2019-10-13 23:04:10,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:10,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:04:10,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107615637] [2019-10-13 23:04:10,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:04:10,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:10,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:04:10,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:04:10,381 INFO L87 Difference]: Start difference. First operand 582 states. Second operand 2 states. [2019-10-13 23:04:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:10,448 INFO L93 Difference]: Finished difference Result 479 states and 713 transitions. [2019-10-13 23:04:10,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:04:10,450 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 74 [2019-10-13 23:04:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:10,478 INFO L225 Difference]: With dead ends: 479 [2019-10-13 23:04:10,479 INFO L226 Difference]: Without dead ends: 445 [2019-10-13 23:04:10,488 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 23:04:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-13 23:04:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2019-10-13 23:04:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-13 23:04:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 662 transitions. [2019-10-13 23:04:10,631 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 662 transitions. Word has length 74 [2019-10-13 23:04:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:10,633 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 662 transitions. [2019-10-13 23:04:10,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:04:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 662 transitions. [2019-10-13 23:04:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 23:04:10,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:10,647 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 23:04:10,648 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1841613749, now seen corresponding path program 1 times [2019-10-13 23:04:10,649 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:10,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274824237] [2019-10-13 23:04:10,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:10,650 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:10,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:11,001 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 23:04:11,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274824237] [2019-10-13 23:04:11,002 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:11,002 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:04:11,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309844072] [2019-10-13 23:04:11,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:04:11,005 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:11,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:04:11,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:11,006 INFO L87 Difference]: Start difference. First operand 445 states and 662 transitions. Second operand 9 states. [2019-10-13 23:04:16,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:16,724 INFO L93 Difference]: Finished difference Result 1218 states and 1852 transitions. [2019-10-13 23:04:16,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 23:04:16,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2019-10-13 23:04:16,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:16,752 INFO L225 Difference]: With dead ends: 1218 [2019-10-13 23:04:16,754 INFO L226 Difference]: Without dead ends: 815 [2019-10-13 23:04:16,768 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:04:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2019-10-13 23:04:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 784. [2019-10-13 23:04:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2019-10-13 23:04:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1153 transitions. [2019-10-13 23:04:16,899 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1153 transitions. Word has length 75 [2019-10-13 23:04:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:16,901 INFO L462 AbstractCegarLoop]: Abstraction has 784 states and 1153 transitions. [2019-10-13 23:04:16,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:04:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1153 transitions. [2019-10-13 23:04:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 23:04:16,914 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:16,915 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] [2019-10-13 23:04:16,915 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:16,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1947632873, now seen corresponding path program 1 times [2019-10-13 23:04:16,917 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:16,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280014744] [2019-10-13 23:04:16,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:16,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:16,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:17,381 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 23:04:17,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280014744] [2019-10-13 23:04:17,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:17,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:17,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850338841] [2019-10-13 23:04:17,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:17,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:17,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:17,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:17,385 INFO L87 Difference]: Start difference. First operand 784 states and 1153 transitions. Second operand 5 states. [2019-10-13 23:04:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:19,948 INFO L93 Difference]: Finished difference Result 2342 states and 3531 transitions. [2019-10-13 23:04:19,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:19,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2019-10-13 23:04:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:19,963 INFO L225 Difference]: With dead ends: 2342 [2019-10-13 23:04:19,963 INFO L226 Difference]: Without dead ends: 1601 [2019-10-13 23:04:19,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2019-10-13 23:04:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1505. [2019-10-13 23:04:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2019-10-13 23:04:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2256 transitions. [2019-10-13 23:04:20,078 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2256 transitions. Word has length 77 [2019-10-13 23:04:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:20,079 INFO L462 AbstractCegarLoop]: Abstraction has 1505 states and 2256 transitions. [2019-10-13 23:04:20,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:04:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2256 transitions. [2019-10-13 23:04:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 23:04:20,082 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:20,082 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] [2019-10-13 23:04:20,083 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:20,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1397767893, now seen corresponding path program 1 times [2019-10-13 23:04:20,083 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:20,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481367286] [2019-10-13 23:04:20,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:20,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:20,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:20,223 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 23:04:20,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481367286] [2019-10-13 23:04:20,224 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:20,224 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:20,224 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912158077] [2019-10-13 23:04:20,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:20,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:20,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:20,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:20,227 INFO L87 Difference]: Start difference. First operand 1505 states and 2256 transitions. Second operand 4 states. [2019-10-13 23:04:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:22,087 INFO L93 Difference]: Finished difference Result 4434 states and 6753 transitions. [2019-10-13 23:04:22,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:22,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2019-10-13 23:04:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:22,116 INFO L225 Difference]: With dead ends: 4434 [2019-10-13 23:04:22,116 INFO L226 Difference]: Without dead ends: 2973 [2019-10-13 23:04:22,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:22,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2019-10-13 23:04:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2856. [2019-10-13 23:04:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2019-10-13 23:04:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4326 transitions. [2019-10-13 23:04:22,301 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4326 transitions. Word has length 77 [2019-10-13 23:04:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:22,303 INFO L462 AbstractCegarLoop]: Abstraction has 2856 states and 4326 transitions. [2019-10-13 23:04:22,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4326 transitions. [2019-10-13 23:04:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 23:04:22,306 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:22,306 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] [2019-10-13 23:04:22,307 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:22,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:22,307 INFO L82 PathProgramCache]: Analyzing trace with hash 379461772, now seen corresponding path program 1 times [2019-10-13 23:04:22,307 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:22,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247351289] [2019-10-13 23:04:22,308 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:22,308 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:22,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:22,462 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 23:04:22,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247351289] [2019-10-13 23:04:22,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:22,463 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:22,463 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786965059] [2019-10-13 23:04:22,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:22,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:22,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:22,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:22,465 INFO L87 Difference]: Start difference. First operand 2856 states and 4326 transitions. Second operand 4 states. [2019-10-13 23:04:24,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:24,491 INFO L93 Difference]: Finished difference Result 8532 states and 13130 transitions. [2019-10-13 23:04:24,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:24,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-10-13 23:04:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:24,535 INFO L225 Difference]: With dead ends: 8532 [2019-10-13 23:04:24,535 INFO L226 Difference]: Without dead ends: 5721 [2019-10-13 23:04:24,557 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2019-10-13 23:04:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5559. [2019-10-13 23:04:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5559 states. [2019-10-13 23:04:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 8504 transitions. [2019-10-13 23:04:24,909 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 8504 transitions. Word has length 78 [2019-10-13 23:04:24,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:24,909 INFO L462 AbstractCegarLoop]: Abstraction has 5559 states and 8504 transitions. [2019-10-13 23:04:24,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 8504 transitions. [2019-10-13 23:04:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-13 23:04:24,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:24,913 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] [2019-10-13 23:04:24,913 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:24,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1123253001, now seen corresponding path program 1 times [2019-10-13 23:04:24,914 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:24,914 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632972756] [2019-10-13 23:04:24,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:24,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:24,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:25,123 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 23:04:25,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632972756] [2019-10-13 23:04:25,125 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:25,125 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:25,125 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605083767] [2019-10-13 23:04:25,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:25,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:25,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:25,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:25,127 INFO L87 Difference]: Start difference. First operand 5559 states and 8504 transitions. Second operand 4 states. [2019-10-13 23:04:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:27,008 INFO L93 Difference]: Finished difference Result 16743 states and 26151 transitions. [2019-10-13 23:04:27,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:27,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2019-10-13 23:04:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:27,075 INFO L225 Difference]: With dead ends: 16743 [2019-10-13 23:04:27,075 INFO L226 Difference]: Without dead ends: 11229 [2019-10-13 23:04:27,106 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:27,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11229 states. [2019-10-13 23:04:27,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11229 to 10978. [2019-10-13 23:04:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10978 states. [2019-10-13 23:04:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 17018 transitions. [2019-10-13 23:04:27,704 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 17018 transitions. Word has length 79 [2019-10-13 23:04:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:27,705 INFO L462 AbstractCegarLoop]: Abstraction has 10978 states and 17018 transitions. [2019-10-13 23:04:27,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 17018 transitions. [2019-10-13 23:04:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 23:04:27,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:27,710 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] [2019-10-13 23:04:27,710 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:27,711 INFO L82 PathProgramCache]: Analyzing trace with hash -462766802, now seen corresponding path program 1 times [2019-10-13 23:04:27,711 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:27,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658853170] [2019-10-13 23:04:27,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:27,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:27,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:27,882 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 23:04:27,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658853170] [2019-10-13 23:04:27,882 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:27,883 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:27,883 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183095555] [2019-10-13 23:04:27,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:27,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:27,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:27,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:27,885 INFO L87 Difference]: Start difference. First operand 10978 states and 17018 transitions. Second operand 4 states. [2019-10-13 23:04:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:30,562 INFO L93 Difference]: Finished difference Result 33218 states and 53139 transitions. [2019-10-13 23:04:30,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:30,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-10-13 23:04:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:30,740 INFO L225 Difference]: With dead ends: 33218 [2019-10-13 23:04:30,741 INFO L226 Difference]: Without dead ends: 22273 [2019-10-13 23:04:30,813 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22273 states. [2019-10-13 23:04:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22273 to 21751. [2019-10-13 23:04:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21751 states.