/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_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:11:55,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:11:55,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:11:55,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:11:55,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:11:55,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:11:55,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:11:55,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:11:55,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:11:55,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:11:55,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:11:55,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:11:55,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:11:55,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:11:55,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:11:55,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:11:55,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:11:55,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:11:55,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:11:55,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:11:55,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:11:55,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:11:55,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:11:55,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:11:55,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:11:55,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:11:55,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:11:55,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:11:55,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:11:55,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:11:55,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:11:55,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:11:55,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:11:55,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:11:55,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:11:55,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:11:55,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:11:55,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:11:55,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:11:55,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:11:55,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:11:55,343 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 04:11:55,359 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:11:55,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:11:55,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:11:55,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:11:55,362 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:11:55,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:11:55,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:11:55,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:11:55,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:11:55,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:11:55,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:11:55,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:11:55,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:11:55,366 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:11:55,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:11:55,366 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:11:55,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:11:55,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:11:55,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:11:55,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:11:55,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:11:55,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:55,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:11:55,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:11:55,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:11:55,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:11:55,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:11:55,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:11:55,369 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 04:11:55,662 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:11:55,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:11:55,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:11:55,681 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:11:55,681 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:11:55,682 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2019-11-07 04:11:55,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e9c9d3fc/4995379357664d418c6b1d1b2324790a/FLAGe324bb1da [2019-11-07 04:11:56,346 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:11:56,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2019-11-07 04:11:56,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e9c9d3fc/4995379357664d418c6b1d1b2324790a/FLAGe324bb1da [2019-11-07 04:11:56,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e9c9d3fc/4995379357664d418c6b1d1b2324790a [2019-11-07 04:11:56,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:11:56,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:11:56,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:56,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:11:56,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:11:56,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:56" (1/1) ... [2019-11-07 04:11:56,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db90fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:56, skipping insertion in model container [2019-11-07 04:11:56,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:56" (1/1) ... [2019-11-07 04:11:56,629 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:11:56,724 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:11:57,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:57,498 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:11:57,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:57,782 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:11:57,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57 WrapperNode [2019-11-07 04:11:57,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:57,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:11:57,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:11:57,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:11:57,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (1/1) ... [2019-11-07 04:11:57,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (1/1) ... [2019-11-07 04:11:57,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (1/1) ... [2019-11-07 04:11:57,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (1/1) ... [2019-11-07 04:11:57,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (1/1) ... [2019-11-07 04:11:58,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (1/1) ... [2019-11-07 04:11:58,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (1/1) ... [2019-11-07 04:11:58,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:11:58,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:11:58,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:11:58,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:11:58,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (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 04:11:58,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:11:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:11:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:11:58,126 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:11:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:11:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:11:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:11:58,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:11:58,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:11:58,130 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:11:58,130 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:11:58,130 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:11:58,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:11:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:11:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:11:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:11:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:11:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:11:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:11:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:11:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:11:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:11:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:11:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:11:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:11:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:11:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:11:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:11:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:11:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:11:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:11:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:11:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:11:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:11:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:11:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:11:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:11:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:11:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:11:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:11:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:11:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:11:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:11:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:11:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:11:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:11:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:11:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:11:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:11:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:11:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:11:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:11:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:11:58,142 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:11:58,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:11:58,142 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:11:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:11:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:11:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:11:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:11:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:11:58,143 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:11:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:11:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:11:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-07 04:11:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:11:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-07 04:11:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:11:58,146 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:11:58,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:11:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:11:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:11:58,147 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:11:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:11:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:11:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:11:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:11:58,148 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:11:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:11:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:11:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:11:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:11:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:11:58,150 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:11:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:11:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:11:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:11:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:11:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:11:58,151 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:11:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:11:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:11:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:11:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:11:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:11:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:11:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:11:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:11:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:11:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:11:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:11:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:11:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:11:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:11:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:11:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:11:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:11:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:11:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:11:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:11:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:11:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:11:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:11:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:11:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:11:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:11:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:11:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:11:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:11:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:11:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:11:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:11:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:11:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:11:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:11:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:11:58,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:11:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:11:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:11:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:11:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:11:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:11:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:11:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:11:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:11:58,168 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:11:58,169 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:11:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:11:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:11:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:11:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:11:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:11:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:11:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:11:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:11:58,177 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:11:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:11:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:11:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:11:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:11:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:11:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:11:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:11:58,178 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:11:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-07 04:11:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-07 04:11:58,179 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:11:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:11:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:11:58,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:12:03,104 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:12:03,104 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:12:03,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:03 BoogieIcfgContainer [2019-11-07 04:12:03,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:12:03,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:12:03,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:12:03,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:12:03,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:56" (1/3) ... [2019-11-07 04:12:03,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4b02a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:03, skipping insertion in model container [2019-11-07 04:12:03,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:57" (2/3) ... [2019-11-07 04:12:03,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4b02a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:03, skipping insertion in model container [2019-11-07 04:12:03,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:03" (3/3) ... [2019-11-07 04:12:03,113 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2019-11-07 04:12:03,123 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:12:03,133 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:12:03,145 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:12:03,178 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:12:03,178 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:12:03,178 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:12:03,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:12:03,178 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:12:03,178 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:12:03,179 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:12:03,179 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:12:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states. [2019-11-07 04:12:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-07 04:12:03,225 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:03,227 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:03,229 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:03,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:03,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1873355243, now seen corresponding path program 1 times [2019-11-07 04:12:03,243 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:03,243 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189965569] [2019-11-07 04:12:03,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:04,086 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189965569] [2019-11-07 04:12:04,087 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381906325] [2019-11-07 04:12:04,087 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 04:12:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:04,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:04,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:04,834 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:04,975 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:04,975 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2019-11-07 04:12:04,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791340956] [2019-11-07 04:12:04,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:12:04,986 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:05,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:12:05,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:05,005 INFO L87 Difference]: Start difference. First operand 608 states. Second operand 4 states. [2019-11-07 04:12:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:06,438 INFO L93 Difference]: Finished difference Result 1724 states and 2647 transitions. [2019-11-07 04:12:06,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:12:06,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2019-11-07 04:12:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:06,477 INFO L225 Difference]: With dead ends: 1724 [2019-11-07 04:12:06,478 INFO L226 Difference]: Without dead ends: 1244 [2019-11-07 04:12:06,493 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2019-11-07 04:12:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1203. [2019-11-07 04:12:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2019-11-07 04:12:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1823 transitions. [2019-11-07 04:12:06,713 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1823 transitions. Word has length 81 [2019-11-07 04:12:06,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:06,714 INFO L462 AbstractCegarLoop]: Abstraction has 1203 states and 1823 transitions. [2019-11-07 04:12:06,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:12:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1823 transitions. [2019-11-07 04:12:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-07 04:12:06,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:06,720 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:06,928 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:06,928 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash -553101953, now seen corresponding path program 1 times [2019-11-07 04:12:06,929 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:06,930 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723889378] [2019-11-07 04:12:06,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:07,230 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723889378] [2019-11-07 04:12:07,230 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:07,230 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:12:07,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120484230] [2019-11-07 04:12:07,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:12:07,232 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:07,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:12:07,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:07,233 INFO L87 Difference]: Start difference. First operand 1203 states and 1823 transitions. Second operand 10 states. [2019-11-07 04:12:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:08,285 INFO L93 Difference]: Finished difference Result 2380 states and 3639 transitions. [2019-11-07 04:12:08,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 04:12:08,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2019-11-07 04:12:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:08,316 INFO L225 Difference]: With dead ends: 2380 [2019-11-07 04:12:08,316 INFO L226 Difference]: Without dead ends: 2377 [2019-11-07 04:12:08,320 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:08,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2019-11-07 04:12:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2336. [2019-11-07 04:12:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2019-11-07 04:12:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3587 transitions. [2019-11-07 04:12:08,574 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3587 transitions. Word has length 81 [2019-11-07 04:12:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:08,574 INFO L462 AbstractCegarLoop]: Abstraction has 2336 states and 3587 transitions. [2019-11-07 04:12:08,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:12:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3587 transitions. [2019-11-07 04:12:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-07 04:12:08,578 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:08,579 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:08,579 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:08,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1504598561, now seen corresponding path program 1 times [2019-11-07 04:12:08,579 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:08,580 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653534105] [2019-11-07 04:12:08,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:08,809 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653534105] [2019-11-07 04:12:08,809 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733490086] [2019-11-07 04:12:08,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:09,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:09,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:09,445 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:09,534 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:09,534 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 04:12:09,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638001818] [2019-11-07 04:12:09,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:09,537 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:09,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:09,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:09,537 INFO L87 Difference]: Start difference. First operand 2336 states and 3587 transitions. Second operand 3 states. [2019-11-07 04:12:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:09,802 INFO L93 Difference]: Finished difference Result 5408 states and 8376 transitions. [2019-11-07 04:12:09,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:09,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-11-07 04:12:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:09,825 INFO L225 Difference]: With dead ends: 5408 [2019-11-07 04:12:09,826 INFO L226 Difference]: Without dead ends: 3103 [2019-11-07 04:12:09,838 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2019-11-07 04:12:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 2324. [2019-11-07 04:12:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2324 states. [2019-11-07 04:12:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3561 transitions. [2019-11-07 04:12:10,005 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3561 transitions. Word has length 81 [2019-11-07 04:12:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:10,006 INFO L462 AbstractCegarLoop]: Abstraction has 2324 states and 3561 transitions. [2019-11-07 04:12:10,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:10,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3561 transitions. [2019-11-07 04:12:10,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-07 04:12:10,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:10,009 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:10,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:10,220 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash -623494353, now seen corresponding path program 1 times [2019-11-07 04:12:10,221 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:10,222 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671324720] [2019-11-07 04:12:10,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:10,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671324720] [2019-11-07 04:12:10,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762128830] [2019-11-07 04:12:10,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:10,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:12:11,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:11,113 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:11,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:11,461 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:11,461 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-11-07 04:12:11,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157785466] [2019-11-07 04:12:11,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 04:12:11,463 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:11,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 04:12:11,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:12:11,463 INFO L87 Difference]: Start difference. First operand 2324 states and 3561 transitions. Second operand 11 states. [2019-11-07 04:12:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:15,177 INFO L93 Difference]: Finished difference Result 6449 states and 10035 transitions. [2019-11-07 04:12:15,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 04:12:15,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2019-11-07 04:12:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:15,211 INFO L225 Difference]: With dead ends: 6449 [2019-11-07 04:12:15,212 INFO L226 Difference]: Without dead ends: 4156 [2019-11-07 04:12:15,228 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-11-07 04:12:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2019-11-07 04:12:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 4136. [2019-11-07 04:12:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4136 states. [2019-11-07 04:12:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 6180 transitions. [2019-11-07 04:12:15,420 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 6180 transitions. Word has length 82 [2019-11-07 04:12:15,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:15,420 INFO L462 AbstractCegarLoop]: Abstraction has 4136 states and 6180 transitions. [2019-11-07 04:12:15,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 04:12:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 6180 transitions. [2019-11-07 04:12:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-07 04:12:15,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:15,427 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-07 04:12:15,642 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:15,643 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:15,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1647271114, now seen corresponding path program 1 times [2019-11-07 04:12:15,644 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:15,645 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277606438] [2019-11-07 04:12:15,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:12:15,911 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277606438] [2019-11-07 04:12:15,911 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431183149] [2019-11-07 04:12:15,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:16,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 3852 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 04:12:16,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 04:12:16,848 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:17,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:12:17,389 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:12:17,389 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2019-11-07 04:12:17,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594830640] [2019-11-07 04:12:17,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 04:12:17,391 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:17,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 04:12:17,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2019-11-07 04:12:17,392 INFO L87 Difference]: Start difference. First operand 4136 states and 6180 transitions. Second operand 9 states. [2019-11-07 04:12:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:25,371 INFO L93 Difference]: Finished difference Result 10201 states and 15333 transitions. [2019-11-07 04:12:25,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:12:25,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2019-11-07 04:12:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:25,417 INFO L225 Difference]: With dead ends: 10201 [2019-11-07 04:12:25,417 INFO L226 Difference]: Without dead ends: 6096 [2019-11-07 04:12:25,441 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 376 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 04:12:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2019-11-07 04:12:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 5932. [2019-11-07 04:12:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5932 states. [2019-11-07 04:12:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 8910 transitions. [2019-11-07 04:12:25,757 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 8910 transitions. Word has length 194 [2019-11-07 04:12:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:25,758 INFO L462 AbstractCegarLoop]: Abstraction has 5932 states and 8910 transitions. [2019-11-07 04:12:25,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 04:12:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 8910 transitions. [2019-11-07 04:12:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-07 04:12:25,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:25,768 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 04:12:25,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:25,976 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:25,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2136114581, now seen corresponding path program 1 times [2019-11-07 04:12:25,977 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:25,977 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785280580] [2019-11-07 04:12:25,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 04:12:26,381 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785280580] [2019-11-07 04:12:26,381 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970012789] [2019-11-07 04:12:26,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:27,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 3582 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:12:27,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:12:27,038 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 04:12:27,202 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:12:27,203 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-11-07 04:12:27,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624176163] [2019-11-07 04:12:27,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:27,203 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:12:27,204 INFO L87 Difference]: Start difference. First operand 5932 states and 8910 transitions. Second operand 3 states. [2019-11-07 04:12:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:27,460 INFO L93 Difference]: Finished difference Result 14113 states and 21481 transitions. [2019-11-07 04:12:27,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:27,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2019-11-07 04:12:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:27,521 INFO L225 Difference]: With dead ends: 14113 [2019-11-07 04:12:27,521 INFO L226 Difference]: Without dead ends: 8212 [2019-11-07 04:12:27,553 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:12:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8212 states.