/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:09:34,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:09:34,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:09:34,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:09:34,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:09:34,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:09:34,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:09:34,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:09:34,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:09:34,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:09:34,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:09:34,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:09:34,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:09:34,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:09:34,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:09:34,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:09:34,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:09:34,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:09:34,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:09:34,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:09:34,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:09:34,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:09:34,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:09:34,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:09:34,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:09:34,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:09:34,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:09:34,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:09:34,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:09:34,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:09:34,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:09:34,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:09:34,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:09:34,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:09:34,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:09:34,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:09:34,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:09:34,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:09:34,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:09:34,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:09:34,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:09:34,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:09:34,309 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:09:34,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:09:34,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:09:34,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:09:34,310 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:09:34,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:09:34,311 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:09:34,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:09:34,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:09:34,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:09:34,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:09:34,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:09:34,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:09:34,312 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:09:34,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:09:34,312 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:09:34,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:09:34,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:09:34,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:09:34,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:09:34,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:09:34,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:09:34,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:09:34,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:09:34,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:09:34,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:09:34,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:09:34,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:09:34,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:09:34,598 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:09:34,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:09:34,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:09:34,616 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:09:34,616 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:09:34,617 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-11-07 04:09:34,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b392ef6/33ede7ae4b214ec0b4499c465ceca836/FLAG456ffb8af [2019-11-07 04:09:35,378 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:09:35,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product32.cil.c [2019-11-07 04:09:35,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b392ef6/33ede7ae4b214ec0b4499c465ceca836/FLAG456ffb8af [2019-11-07 04:09:35,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b392ef6/33ede7ae4b214ec0b4499c465ceca836 [2019-11-07 04:09:35,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:09:35,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:09:35,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:35,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:09:35,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:09:35,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:35" (1/1) ... [2019-11-07 04:09:35,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497b151a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:35, skipping insertion in model container [2019-11-07 04:09:35,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:35" (1/1) ... [2019-11-07 04:09:35,604 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:09:35,771 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:09:36,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:09:36,576 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:09:36,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:09:36,843 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:09:36,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36 WrapperNode [2019-11-07 04:09:36,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:36,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:09:36,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:09:36,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:09:36,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:36,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:36,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:36,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:36,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:36,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:37,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (1/1) ... [2019-11-07 04:09:37,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:09:37,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:09:37,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:09:37,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:09:37,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:09:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:09:37,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:09:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:09:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:09:37,130 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:09:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:09:37,132 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:09:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:09:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:09:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:09:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:09:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:09:37,135 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:09:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:09:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:09:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:09:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:09:37,139 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:09:37,140 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:09:37,140 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:09:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:09:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:09:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:09:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:09:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:09:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:09:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:09:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:09:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:09:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:09:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:09:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:09:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:09:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:09:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:09:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 04:09:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:09:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 04:09:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:09:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:09:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:09:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:09:37,145 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:09:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:09:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:09:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:09:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:09:37,146 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:09:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:09:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:09:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:09:37,147 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:09:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:09:37,148 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:09:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:09:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:09:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:09:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:09:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:09:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:09:37,151 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:09:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:09:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:09:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:09:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:09:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:09:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:09:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:09:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:09:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:09:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:09:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:09:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:09:37,155 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:09:37,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:09:37,156 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:09:37,157 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:09:37,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:09:37,157 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:09:37,157 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:09:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:09:37,158 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:09:37,159 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:09:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:09:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:09:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:09:37,160 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:09:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:09:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:09:37,161 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:09:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:09:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:09:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:09:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:09:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:09:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:09:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:09:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:09:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:09:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:09:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:09:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:09:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:09:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:09:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:09:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:09:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:09:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:09:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:09:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:09:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:09:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:09:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:09:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:09:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:09:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:09:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:09:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:09:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:09:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:09:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:09:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:09:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:09:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:09:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:09:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:09:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:09:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:09:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:09:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:09:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:09:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 04:09:37,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:09:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 04:09:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:09:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:09:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:09:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:09:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:09:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:09:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:09:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:09:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:09:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:09:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:09:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:09:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:09:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:09:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:09:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:09:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:09:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:09:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:09:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:09:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:09:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:09:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:09:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:09:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:09:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:09:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:09:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:09:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:09:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:09:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:09:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:09:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:09:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:09:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:09:42,156 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:09:42,156 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:09:42,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:42 BoogieIcfgContainer [2019-11-07 04:09:42,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:09:42,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:09:42,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:09:42,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:09:42,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:09:35" (1/3) ... [2019-11-07 04:09:42,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3223fc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:42, skipping insertion in model container [2019-11-07 04:09:42,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:36" (2/3) ... [2019-11-07 04:09:42,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3223fc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:42, skipping insertion in model container [2019-11-07 04:09:42,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:42" (3/3) ... [2019-11-07 04:09:42,167 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2019-11-07 04:09:42,179 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:09:42,191 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:09:42,206 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:09:42,254 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:09:42,254 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:09:42,254 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:09:42,255 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:09:42,255 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:09:42,255 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:09:42,255 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:09:42,255 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:09:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states. [2019-11-07 04:09:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 04:09:42,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:42,324 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:09:42,326 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:42,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:42,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1630587040, now seen corresponding path program 1 times [2019-11-07 04:09:42,342 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:42,343 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298710434] [2019-11-07 04:09:42,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:09:43,066 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298710434] [2019-11-07 04:09:43,067 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:43,067 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:09:43,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138241695] [2019-11-07 04:09:43,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:09:43,073 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:43,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:09:43,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:09:43,090 INFO L87 Difference]: Start difference. First operand 617 states. Second operand 6 states. [2019-11-07 04:09:47,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:47,160 INFO L93 Difference]: Finished difference Result 1481 states and 2263 transitions. [2019-11-07 04:09:47,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:09:47,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-11-07 04:09:47,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:47,192 INFO L225 Difference]: With dead ends: 1481 [2019-11-07 04:09:47,192 INFO L226 Difference]: Without dead ends: 1023 [2019-11-07 04:09:47,203 INFO L630 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 [2019-11-07 04:09:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2019-11-07 04:09:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 932. [2019-11-07 04:09:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2019-11-07 04:09:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1417 transitions. [2019-11-07 04:09:47,391 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1417 transitions. Word has length 97 [2019-11-07 04:09:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:47,392 INFO L462 AbstractCegarLoop]: Abstraction has 932 states and 1417 transitions. [2019-11-07 04:09:47,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:09:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1417 transitions. [2019-11-07 04:09:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 04:09:47,409 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:47,410 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:09:47,410 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:47,412 INFO L82 PathProgramCache]: Analyzing trace with hash 699214467, now seen corresponding path program 1 times [2019-11-07 04:09:47,412 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:47,413 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284167892] [2019-11-07 04:09:47,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:09:47,887 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284167892] [2019-11-07 04:09:47,888 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:47,888 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:09:47,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547513150] [2019-11-07 04:09:47,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:09:47,893 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:47,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:09:47,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:09:47,894 INFO L87 Difference]: Start difference. First operand 932 states and 1417 transitions. Second operand 7 states. [2019-11-07 04:09:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:09:52,087 INFO L93 Difference]: Finished difference Result 2718 states and 4199 transitions. [2019-11-07 04:09:52,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:09:52,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2019-11-07 04:09:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:09:52,113 INFO L225 Difference]: With dead ends: 2718 [2019-11-07 04:09:52,113 INFO L226 Difference]: Without dead ends: 1840 [2019-11-07 04:09:52,121 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:09:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2019-11-07 04:09:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1803. [2019-11-07 04:09:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2019-11-07 04:09:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2777 transitions. [2019-11-07 04:09:52,322 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2777 transitions. Word has length 146 [2019-11-07 04:09:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:09:52,323 INFO L462 AbstractCegarLoop]: Abstraction has 1803 states and 2777 transitions. [2019-11-07 04:09:52,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:09:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2777 transitions. [2019-11-07 04:09:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 04:09:52,344 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:09:52,347 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:09:52,347 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:09:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:09:52,349 INFO L82 PathProgramCache]: Analyzing trace with hash 247221830, now seen corresponding path program 1 times [2019-11-07 04:09:52,350 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:09:52,350 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806929137] [2019-11-07 04:09:52,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:09:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:09:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:09:52,817 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806929137] [2019-11-07 04:09:52,817 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:09:52,818 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 04:09:52,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012722111] [2019-11-07 04:09:52,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 04:09:52,820 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:09:52,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 04:09:52,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:09:52,821 INFO L87 Difference]: Start difference. First operand 1803 states and 2777 transitions. Second operand 12 states. [2019-11-07 04:10:01,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:01,488 INFO L93 Difference]: Finished difference Result 4588 states and 7042 transitions. [2019-11-07 04:10:01,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 04:10:01,489 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2019-11-07 04:10:01,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:01,508 INFO L225 Difference]: With dead ends: 4588 [2019-11-07 04:10:01,509 INFO L226 Difference]: Without dead ends: 2838 [2019-11-07 04:10:01,519 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-11-07 04:10:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2019-11-07 04:10:01,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2789. [2019-11-07 04:10:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2019-11-07 04:10:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4242 transitions. [2019-11-07 04:10:01,669 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4242 transitions. Word has length 149 [2019-11-07 04:10:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:01,670 INFO L462 AbstractCegarLoop]: Abstraction has 2789 states and 4242 transitions. [2019-11-07 04:10:01,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 04:10:01,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4242 transitions. [2019-11-07 04:10:01,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-07 04:10:01,677 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:01,678 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:01,678 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:01,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:01,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2003943514, now seen corresponding path program 1 times [2019-11-07 04:10:01,679 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:01,680 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628795117] [2019-11-07 04:10:01,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:10:01,949 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628795117] [2019-11-07 04:10:01,950 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:01,950 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:10:01,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913280333] [2019-11-07 04:10:01,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:10:01,951 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:01,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:10:01,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:10:01,951 INFO L87 Difference]: Start difference. First operand 2789 states and 4242 transitions. Second operand 6 states. [2019-11-07 04:10:02,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:02,734 INFO L93 Difference]: Finished difference Result 2841 states and 4324 transitions. [2019-11-07 04:10:02,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:02,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2019-11-07 04:10:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:02,753 INFO L225 Difference]: With dead ends: 2841 [2019-11-07 04:10:02,753 INFO L226 Difference]: Without dead ends: 2824 [2019-11-07 04:10:02,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:10:02,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2019-11-07 04:10:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2795. [2019-11-07 04:10:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2019-11-07 04:10:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4248 transitions. [2019-11-07 04:10:02,904 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4248 transitions. Word has length 150 [2019-11-07 04:10:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:02,905 INFO L462 AbstractCegarLoop]: Abstraction has 2795 states and 4248 transitions. [2019-11-07 04:10:02,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:10:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4248 transitions. [2019-11-07 04:10:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 04:10:02,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:02,911 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:02,911 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash -681305135, now seen corresponding path program 1 times [2019-11-07 04:10:02,912 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:02,912 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517628205] [2019-11-07 04:10:02,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:10:03,163 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517628205] [2019-11-07 04:10:03,163 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:03,164 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 04:10:03,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378618524] [2019-11-07 04:10:03,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:10:03,165 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:03,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:10:03,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:10:03,165 INFO L87 Difference]: Start difference. First operand 2795 states and 4248 transitions. Second operand 9 states. [2019-11-07 04:10:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:03,972 INFO L93 Difference]: Finished difference Result 2966 states and 4480 transitions. [2019-11-07 04:10:03,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:10:03,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 155 [2019-11-07 04:10:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:03,989 INFO L225 Difference]: With dead ends: 2966 [2019-11-07 04:10:03,990 INFO L226 Difference]: Without dead ends: 2949 [2019-11-07 04:10:03,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 04:10:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2019-11-07 04:10:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2887. [2019-11-07 04:10:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2887 states. [2019-11-07 04:10:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 4372 transitions. [2019-11-07 04:10:04,146 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 4372 transitions. Word has length 155 [2019-11-07 04:10:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:04,147 INFO L462 AbstractCegarLoop]: Abstraction has 2887 states and 4372 transitions. [2019-11-07 04:10:04,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:10:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 4372 transitions. [2019-11-07 04:10:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-07 04:10:04,152 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:04,153 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:04,153 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:04,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:04,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1690517356, now seen corresponding path program 1 times [2019-11-07 04:10:04,154 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:04,154 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121532268] [2019-11-07 04:10:04,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:10:05,256 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121532268] [2019-11-07 04:10:05,256 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634653371] [2019-11-07 04:10:05,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:10:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:05,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 3559 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-07 04:10:05,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:10:06,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:10:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 04:10:06,237 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:10:06,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:10:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 04:10:07,002 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:10:07,003 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [32] total 37 [2019-11-07 04:10:07,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697506720] [2019-11-07 04:10:07,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:07,004 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:07,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:07,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1229, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 04:10:07,005 INFO L87 Difference]: Start difference. First operand 2887 states and 4372 transitions. Second operand 7 states. [2019-11-07 04:10:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:07,312 INFO L93 Difference]: Finished difference Result 2978 states and 4484 transitions. [2019-11-07 04:10:07,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:10:07,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2019-11-07 04:10:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:07,330 INFO L225 Difference]: With dead ends: 2978 [2019-11-07 04:10:07,330 INFO L226 Difference]: Without dead ends: 2961 [2019-11-07 04:10:07,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 04:10:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2019-11-07 04:10:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2941. [2019-11-07 04:10:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2941 states.