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_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:23:16,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:23:16,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:23:16,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:23:16,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:23:16,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:23:16,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:23:16,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:23:16,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:23:16,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:23:16,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:23:16,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:23:16,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:23:16,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:23:16,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:23:16,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:23:16,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:23:16,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:23:16,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:23:16,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:23:16,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:23:16,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:23:16,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:23:16,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:23:16,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:23:16,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:23:16,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:23:16,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:23:16,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:23:16,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:23:16,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:23:16,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:23:16,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:23:16,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:23:16,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:23:16,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:23:16,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:23:16,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:23:16,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:23:16,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:23:16,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:23:16,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 14:23:16,361 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:23:16,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:23:16,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:23:16,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:23:16,364 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:23:16,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:23:16,364 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:23:16,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:23:16,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:23:16,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:23:16,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:23:16,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:23:16,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:23:16,366 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:23:16,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:23:16,366 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:23:16,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:23:16,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:23:16,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:23:16,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:23:16,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:23:16,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:23:16,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:23:16,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:23:16,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:23:16,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:23:16,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:23:16,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:23:16,369 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 [2019-10-07 14:23:16,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:23:16,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:23:16,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:23:16,737 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:23:16,737 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:23:16,738 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product01.cil.c [2019-10-07 14:23:16,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe3bb3b0/6e7682023447468db5687b213a72e7a2/FLAG8ad171c0a [2019-10-07 14:23:17,580 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:23:17,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product01.cil.c [2019-10-07 14:23:17,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe3bb3b0/6e7682023447468db5687b213a72e7a2/FLAG8ad171c0a [2019-10-07 14:23:17,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe3bb3b0/6e7682023447468db5687b213a72e7a2 [2019-10-07 14:23:17,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:23:17,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:23:17,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:23:17,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:23:17,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:23:17,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:23:17" (1/1) ... [2019-10-07 14:23:17,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b1071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:17, skipping insertion in model container [2019-10-07 14:23:17,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:23:17" (1/1) ... [2019-10-07 14:23:17,797 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:23:17,886 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:23:18,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:23:18,649 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:23:18,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:23:18,867 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:23:18,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18 WrapperNode [2019-10-07 14:23:18,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:23:18,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:23:18,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:23:18,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:23:18,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (1/1) ... [2019-10-07 14:23:18,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (1/1) ... [2019-10-07 14:23:18,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (1/1) ... [2019-10-07 14:23:18,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (1/1) ... [2019-10-07 14:23:18,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (1/1) ... [2019-10-07 14:23:19,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (1/1) ... [2019-10-07 14:23:19,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (1/1) ... [2019-10-07 14:23:19,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:23:19,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:23:19,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:23:19,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:23:19,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:23:19,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:23:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:23:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:23:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:23:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:23:19,159 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:23:19,159 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:23:19,160 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:23:19,160 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:23:19,160 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:23:19,160 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:23:19,161 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:23:19,162 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:23:19,162 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:23:19,162 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:23:19,162 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:23:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:23:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:23:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:23:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:23:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:23:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:23:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:23:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:23:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:23:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:23:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:23:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:23:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:23:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:23:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:23:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:23:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:23:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:23:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:23:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:23:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:23:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:23:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:23:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:23:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:23:19,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:23:19,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:23:19,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:23:19,172 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:23:19,172 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:23:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:23:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:23:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:23:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:23:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:23:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:23:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:23:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:23:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:23:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:23:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:23:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:23:19,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:23:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:23:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:23:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:23:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:23:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:23:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:23:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:23:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:23:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:23:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:23:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:23:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:23:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:23:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:23:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:23:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:23:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:23:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:23:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:23:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:23:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:23:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:23:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:23:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:23:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:23:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:23:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:23:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:23:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:23:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:23:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:23:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:23:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:23:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:23:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:23:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:23:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:23:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:23:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:23:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:23:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:23:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:23:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:23:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:23:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:23:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:23:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:23:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:23:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:23:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:23:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:23:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:23:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:23:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:23:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:23:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:23:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:23:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:23:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:23:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:23:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:23:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:23:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:23:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:23:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:23:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:23:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:23:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:23:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:23:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:23:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:23:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:23:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:23:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:23:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:23:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:23:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:23:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:23:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:23:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:23:19,205 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:23:19,205 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:23:19,205 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:23:19,205 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:23:19,206 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:23:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:23:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:23:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:23:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:23:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:23:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:23:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:23:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:23:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:23:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:23:19,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:23:24,572 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:23:24,572 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:23:24,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:23:24 BoogieIcfgContainer [2019-10-07 14:23:24,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:23:24,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:23:24,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:23:24,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:23:24,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:23:17" (1/3) ... [2019-10-07 14:23:24,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1d142b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:23:24, skipping insertion in model container [2019-10-07 14:23:24,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:23:18" (2/3) ... [2019-10-07 14:23:24,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1d142b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:23:24, skipping insertion in model container [2019-10-07 14:23:24,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:23:24" (3/3) ... [2019-10-07 14:23:24,584 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product01.cil.c [2019-10-07 14:23:24,596 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:23:24,607 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:23:24,620 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:23:24,655 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:23:24,655 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:23:24,656 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:23:24,656 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:23:24,656 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:23:24,656 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:23:24,656 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:23:24,656 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:23:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states. [2019-10-07 14:23:24,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-07 14:23:24,709 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:24,710 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:24,712 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:24,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2102671491, now seen corresponding path program 1 times [2019-10-07 14:23:24,729 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:24,730 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:24,730 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:24,730 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:23:25,463 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:25,463 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:25,464 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:23:25,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:23:25,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:23:25,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:23:25,491 INFO L87 Difference]: Start difference. First operand 554 states. Second operand 8 states. [2019-10-07 14:23:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:25,752 INFO L93 Difference]: Finished difference Result 841 states and 1303 transitions. [2019-10-07 14:23:25,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:23:25,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2019-10-07 14:23:25,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:25,786 INFO L225 Difference]: With dead ends: 841 [2019-10-07 14:23:25,786 INFO L226 Difference]: Without dead ends: 429 [2019-10-07 14:23:25,797 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:23:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-10-07 14:23:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 426. [2019-10-07 14:23:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-07 14:23:25,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 645 transitions. [2019-10-07 14:23:25,905 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 645 transitions. Word has length 99 [2019-10-07 14:23:25,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:25,906 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 645 transitions. [2019-10-07 14:23:25,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:23:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 645 transitions. [2019-10-07 14:23:25,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-07 14:23:25,915 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:25,915 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:25,915 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:25,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:25,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1636883222, now seen corresponding path program 1 times [2019-10-07 14:23:25,916 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:25,916 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:25,917 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:25,917 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:23:26,281 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:26,281 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:26,281 INFO L95 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 [2019-10-07 14:23:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:26,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 14:23:26,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:23:27,038 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:23:27,206 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:23:27,207 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-07 14:23:27,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:23:27,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:23:27,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:23:27,210 INFO L87 Difference]: Start difference. First operand 426 states and 645 transitions. Second operand 5 states. [2019-10-07 14:23:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:28,831 INFO L93 Difference]: Finished difference Result 1566 states and 2425 transitions. [2019-10-07 14:23:28,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:28,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2019-10-07 14:23:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:28,844 INFO L225 Difference]: With dead ends: 1566 [2019-10-07 14:23:28,844 INFO L226 Difference]: Without dead ends: 1171 [2019-10-07 14:23:28,849 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:23:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2019-10-07 14:23:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1159. [2019-10-07 14:23:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2019-10-07 14:23:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1743 transitions. [2019-10-07 14:23:28,961 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1743 transitions. Word has length 103 [2019-10-07 14:23:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:28,965 INFO L462 AbstractCegarLoop]: Abstraction has 1159 states and 1743 transitions. [2019-10-07 14:23:28,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:23:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1743 transitions. [2019-10-07 14:23:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-07 14:23:28,970 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:28,970 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:23:29,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:29,183 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:29,184 INFO L82 PathProgramCache]: Analyzing trace with hash 27946490, now seen corresponding path program 1 times [2019-10-07 14:23:29,184 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:29,185 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:29,185 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:29,187 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:23:29,541 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:29,541 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:29,542 INFO L95 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 [2019-10-07 14:23:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:30,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 14:23:30,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:23:30,376 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:30,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:23:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:23:30,794 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:23:30,794 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2019-10-07 14:23:30,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:23:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:23:30,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:23:30,796 INFO L87 Difference]: Start difference. First operand 1159 states and 1743 transitions. Second operand 7 states. [2019-10-07 14:23:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:31,730 INFO L93 Difference]: Finished difference Result 2127 states and 3217 transitions. [2019-10-07 14:23:31,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:23:31,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-07 14:23:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:31,745 INFO L225 Difference]: With dead ends: 2127 [2019-10-07 14:23:31,746 INFO L226 Difference]: Without dead ends: 1282 [2019-10-07 14:23:31,754 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:23:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-10-07 14:23:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1231. [2019-10-07 14:23:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2019-10-07 14:23:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1843 transitions. [2019-10-07 14:23:31,862 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1843 transitions. Word has length 107 [2019-10-07 14:23:31,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:31,863 INFO L462 AbstractCegarLoop]: Abstraction has 1231 states and 1843 transitions. [2019-10-07 14:23:31,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:23:31,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1843 transitions. [2019-10-07 14:23:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 14:23:31,866 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:31,866 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:32,077 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:32,078 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:32,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1106744652, now seen corresponding path program 1 times [2019-10-07 14:23:32,079 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:32,079 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:32,079 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:32,079 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:23:32,313 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:32,313 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:32,313 INFO L95 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 [2019-10-07 14:23:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:32,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:23:32,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:23:32,932 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:23:33,079 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:23:33,079 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 10 [2019-10-07 14:23:33,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:23:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:23:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:23:33,081 INFO L87 Difference]: Start difference. First operand 1231 states and 1843 transitions. Second operand 5 states. [2019-10-07 14:23:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:33,291 INFO L93 Difference]: Finished difference Result 2296 states and 3493 transitions. [2019-10-07 14:23:33,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:23:33,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2019-10-07 14:23:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:33,302 INFO L225 Difference]: With dead ends: 2296 [2019-10-07 14:23:33,303 INFO L226 Difference]: Without dead ends: 1231 [2019-10-07 14:23:33,310 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:23:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2019-10-07 14:23:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2019-10-07 14:23:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2019-10-07 14:23:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1822 transitions. [2019-10-07 14:23:33,396 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1822 transitions. Word has length 108 [2019-10-07 14:23:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:33,397 INFO L462 AbstractCegarLoop]: Abstraction has 1231 states and 1822 transitions. [2019-10-07 14:23:33,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:23:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1822 transitions. [2019-10-07 14:23:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:23:33,400 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:33,400 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:33,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:33,611 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:33,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2082142587, now seen corresponding path program 1 times [2019-10-07 14:23:33,612 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:33,612 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:33,612 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:33,612 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:23:33,804 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:33,804 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:33,804 INFO L95 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 [2019-10-07 14:23:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:34,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-07 14:23:34,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:34,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:23:34,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:23:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:23:34,576 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:34,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:23:35,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:23:35,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:23:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:23:35,078 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:23:35,078 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 10] total 23 [2019-10-07 14:23:35,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:23:35,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:23:35,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:23:35,079 INFO L87 Difference]: Start difference. First operand 1231 states and 1822 transitions. Second operand 10 states. [2019-10-07 14:23:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:40,127 INFO L93 Difference]: Finished difference Result 2151 states and 3213 transitions. [2019-10-07 14:23:40,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-07 14:23:40,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2019-10-07 14:23:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:40,148 INFO L225 Difference]: With dead ends: 2151 [2019-10-07 14:23:40,148 INFO L226 Difference]: Without dead ends: 2148 [2019-10-07 14:23:40,151 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2019-10-07 14:23:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2019-10-07 14:23:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2077. [2019-10-07 14:23:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2019-10-07 14:23:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3108 transitions. [2019-10-07 14:23:40,341 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3108 transitions. Word has length 110 [2019-10-07 14:23:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:40,343 INFO L462 AbstractCegarLoop]: Abstraction has 2077 states and 3108 transitions. [2019-10-07 14:23:40,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:23:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3108 transitions. [2019-10-07 14:23:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 14:23:40,347 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:40,347 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:40,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:40,556 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:40,557 INFO L82 PathProgramCache]: Analyzing trace with hash -662345039, now seen corresponding path program 1 times [2019-10-07 14:23:40,557 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:40,558 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:40,558 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:40,558 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:23:40,809 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:40,809 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:40,809 INFO L95 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 [2019-10-07 14:23:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:41,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:23:41,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:23:41,473 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:23:41,567 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:23:41,567 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-07 14:23:41,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:23:41,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:23:41,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:23:41,569 INFO L87 Difference]: Start difference. First operand 2077 states and 3108 transitions. Second operand 3 states. [2019-10-07 14:23:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:41,828 INFO L93 Difference]: Finished difference Result 5912 states and 9145 transitions. [2019-10-07 14:23:41,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:23:41,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-07 14:23:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:41,864 INFO L225 Difference]: With dead ends: 5912 [2019-10-07 14:23:41,864 INFO L226 Difference]: Without dead ends: 3866 [2019-10-07 14:23:41,886 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:23:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2019-10-07 14:23:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3743. [2019-10-07 14:23:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3743 states. [2019-10-07 14:23:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5637 transitions. [2019-10-07 14:23:42,170 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5637 transitions. Word has length 111 [2019-10-07 14:23:42,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:42,171 INFO L462 AbstractCegarLoop]: Abstraction has 3743 states and 5637 transitions. [2019-10-07 14:23:42,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:23:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5637 transitions. [2019-10-07 14:23:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:23:42,177 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:42,177 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:23:42,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:42,385 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:42,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1717081084, now seen corresponding path program 1 times [2019-10-07 14:23:42,386 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:42,387 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:42,387 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:42,387 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:23:42,590 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:42,591 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:42,591 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:23:42,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:23:42,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:23:42,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:23:42,592 INFO L87 Difference]: Start difference. First operand 3743 states and 5637 transitions. Second operand 8 states. [2019-10-07 14:23:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:45,381 INFO L93 Difference]: Finished difference Result 10044 states and 15259 transitions. [2019-10-07 14:23:45,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:23:45,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2019-10-07 14:23:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:45,450 INFO L225 Difference]: With dead ends: 10044 [2019-10-07 14:23:45,451 INFO L226 Difference]: Without dead ends: 6332 [2019-10-07 14:23:45,481 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:23:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2019-10-07 14:23:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 6317. [2019-10-07 14:23:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6317 states. [2019-10-07 14:23:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 9599 transitions. [2019-10-07 14:23:45,903 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 9599 transitions. Word has length 110 [2019-10-07 14:23:45,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:45,905 INFO L462 AbstractCegarLoop]: Abstraction has 6317 states and 9599 transitions. [2019-10-07 14:23:45,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:23:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 9599 transitions. [2019-10-07 14:23:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:23:45,911 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:45,915 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:23:45,915 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:45,916 INFO L82 PathProgramCache]: Analyzing trace with hash -822865660, now seen corresponding path program 1 times [2019-10-07 14:23:45,916 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:45,916 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:45,916 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:45,917 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:23:46,298 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:46,298 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:46,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:23:46,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:23:46,885 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:23:46,986 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:23:46,986 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:23:46,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:23:46,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:23:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:23:46,987 INFO L87 Difference]: Start difference. First operand 6317 states and 9599 transitions. Second operand 3 states. [2019-10-07 14:23:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:47,429 INFO L93 Difference]: Finished difference Result 14365 states and 22296 transitions. [2019-10-07 14:23:47,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:23:47,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-07 14:23:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:47,511 INFO L225 Difference]: With dead ends: 14365 [2019-10-07 14:23:47,512 INFO L226 Difference]: Without dead ends: 8079 [2019-10-07 14:23:47,558 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:23:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8079 states. [2019-10-07 14:23:47,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8079 to 7863. [2019-10-07 14:23:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7863 states. [2019-10-07 14:23:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7863 states to 7863 states and 11953 transitions. [2019-10-07 14:23:48,851 INFO L78 Accepts]: Start accepts. Automaton has 7863 states and 11953 transitions. Word has length 110 [2019-10-07 14:23:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:48,852 INFO L462 AbstractCegarLoop]: Abstraction has 7863 states and 11953 transitions. [2019-10-07 14:23:48,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:23:48,852 INFO L276 IsEmpty]: Start isEmpty. Operand 7863 states and 11953 transitions. [2019-10-07 14:23:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-07 14:23:48,856 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:48,856 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:23:49,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:49,066 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:49,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash -943739269, now seen corresponding path program 1 times [2019-10-07 14:23:49,066 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:49,067 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:49,067 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:49,068 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-07 14:23:49,252 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:49,252 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:49,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:23:49,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:23:49,912 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-07 14:23:50,046 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:23:50,046 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 10 [2019-10-07 14:23:50,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:23:50,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:23:50,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:23:50,051 INFO L87 Difference]: Start difference. First operand 7863 states and 11953 transitions. Second operand 5 states. [2019-10-07 14:23:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:50,392 INFO L93 Difference]: Finished difference Result 15353 states and 23848 transitions. [2019-10-07 14:23:50,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:50,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2019-10-07 14:23:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:50,449 INFO L225 Difference]: With dead ends: 15353 [2019-10-07 14:23:50,450 INFO L226 Difference]: Without dead ends: 8012 [2019-10-07 14:23:50,487 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 257 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:23:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2019-10-07 14:23:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 7972. [2019-10-07 14:23:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7972 states. [2019-10-07 14:23:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7972 states to 7972 states and 12274 transitions. [2019-10-07 14:23:51,129 INFO L78 Accepts]: Start accepts. Automaton has 7972 states and 12274 transitions. Word has length 130 [2019-10-07 14:23:51,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:51,130 INFO L462 AbstractCegarLoop]: Abstraction has 7972 states and 12274 transitions. [2019-10-07 14:23:51,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:23:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7972 states and 12274 transitions. [2019-10-07 14:23:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-07 14:23:51,137 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:51,138 INFO L385 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:51,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:51,349 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:51,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:51,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1520733588, now seen corresponding path program 1 times [2019-10-07 14:23:51,350 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:51,350 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:51,350 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:51,351 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:23:51,537 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:51,538 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:52,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 3082 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:23:52,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 14:23:52,188 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 14:23:52,342 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:23:52,342 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:23:52,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:52,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:52,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:23:52,343 INFO L87 Difference]: Start difference. First operand 7972 states and 12274 transitions. Second operand 4 states. [2019-10-07 14:23:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:52,734 INFO L93 Difference]: Finished difference Result 16326 states and 25699 transitions. [2019-10-07 14:23:52,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:23:52,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-07 14:23:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:52,784 INFO L225 Difference]: With dead ends: 16326 [2019-10-07 14:23:52,784 INFO L226 Difference]: Without dead ends: 7972 [2019-10-07 14:23:52,818 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 320 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:23:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7972 states. [2019-10-07 14:23:53,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7972 to 7972. [2019-10-07 14:23:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7972 states. [2019-10-07 14:23:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7972 states to 7972 states and 12160 transitions. [2019-10-07 14:23:53,360 INFO L78 Accepts]: Start accepts. Automaton has 7972 states and 12160 transitions. Word has length 161 [2019-10-07 14:23:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:53,361 INFO L462 AbstractCegarLoop]: Abstraction has 7972 states and 12160 transitions. [2019-10-07 14:23:53,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:53,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7972 states and 12160 transitions. [2019-10-07 14:23:53,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-07 14:23:53,368 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:53,369 INFO L385 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:53,577 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:53,578 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:53,578 INFO L82 PathProgramCache]: Analyzing trace with hash -889513540, now seen corresponding path program 1 times [2019-10-07 14:23:53,578 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:53,578 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:53,579 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:53,579 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:23:53,747 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:53,747 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:54,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 14:23:54,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 14:23:54,467 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 14:23:54,587 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:23:54,588 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 10 [2019-10-07 14:23:54,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:23:54,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:23:54,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:23:54,589 INFO L87 Difference]: Start difference. First operand 7972 states and 12160 transitions. Second operand 5 states. [2019-10-07 14:23:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:54,820 INFO L93 Difference]: Finished difference Result 11869 states and 18409 transitions. [2019-10-07 14:23:54,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:54,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2019-10-07 14:23:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:54,869 INFO L225 Difference]: With dead ends: 11869 [2019-10-07 14:23:54,870 INFO L226 Difference]: Without dead ends: 8089 [2019-10-07 14:23:54,890 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:23:54,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8089 states. [2019-10-07 14:23:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8089 to 8021. [2019-10-07 14:23:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8021 states. [2019-10-07 14:23:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8021 states to 8021 states and 12197 transitions. [2019-10-07 14:23:55,311 INFO L78 Accepts]: Start accepts. Automaton has 8021 states and 12197 transitions. Word has length 165 [2019-10-07 14:23:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:55,312 INFO L462 AbstractCegarLoop]: Abstraction has 8021 states and 12197 transitions. [2019-10-07 14:23:55,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:23:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8021 states and 12197 transitions. [2019-10-07 14:23:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-07 14:23:55,320 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:55,321 INFO L385 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, 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] [2019-10-07 14:23:55,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:55,537 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:55,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1609878017, now seen corresponding path program 1 times [2019-10-07 14:23:55,538 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:55,538 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:55,538 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:55,538 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:23:55,923 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:55,923 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:56,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 3310 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:23:56,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:23:56,690 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:56,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:23:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:23:57,138 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:23:57,138 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:23:57,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:23:57,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:23:57,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:23:57,140 INFO L87 Difference]: Start difference. First operand 8021 states and 12197 transitions. Second operand 9 states. [2019-10-07 14:24:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:05,103 INFO L93 Difference]: Finished difference Result 22494 states and 36398 transitions. [2019-10-07 14:24:05,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:24:05,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2019-10-07 14:24:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:05,222 INFO L225 Difference]: With dead ends: 22494 [2019-10-07 14:24:05,223 INFO L226 Difference]: Without dead ends: 14504 [2019-10-07 14:24:05,264 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 330 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:24:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14504 states. [2019-10-07 14:24:06,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14504 to 13610. [2019-10-07 14:24:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13610 states. [2019-10-07 14:24:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13610 states to 13610 states and 21047 transitions. [2019-10-07 14:24:06,318 INFO L78 Accepts]: Start accepts. Automaton has 13610 states and 21047 transitions. Word has length 170 [2019-10-07 14:24:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:06,319 INFO L462 AbstractCegarLoop]: Abstraction has 13610 states and 21047 transitions. [2019-10-07 14:24:06,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:24:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13610 states and 21047 transitions. [2019-10-07 14:24:06,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-07 14:24:06,325 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:06,326 INFO L385 BasicCegarLoop]: trace histogram [6, 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, 1, 1] [2019-10-07 14:24:06,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:06,535 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:06,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:06,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1522543045, now seen corresponding path program 1 times [2019-10-07 14:24:06,536 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:06,536 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:06,536 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:06,537 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-07 14:24:06,696 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:06,696 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:07,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 14:24:07,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:07,628 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-10-07 14:24:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:24:07,682 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:08,051 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:24:08,487 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:24:08,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:08,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:08,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:08,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:08,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:08,877 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:24:09,333 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:24:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:24:09,462 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:24:10,256 INFO L162 IcfgInterpreter]: Started Sifa with 143 locations of interest [2019-10-07 14:24:10,257 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:24:10,264 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:24:10,272 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:24:10,272 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:24:58,360 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 750 [2019-10-07 14:25:03,207 WARN L191 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:25:03,615 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 836 [2019-10-07 14:25:04,065 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 836 [2019-10-07 14:25:04,349 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 836 [2019-10-07 14:25:04,839 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:05,281 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:05,724 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:06,209 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:07,318 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 1014 DAG size of output: 1012 [2019-10-07 14:25:07,798 WARN L191 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:08,281 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:08,710 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:09,133 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:09,619 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:25:09,635 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 370 for LOIs [2019-10-07 14:25:09,818 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 719 [2019-10-07 14:25:10,249 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 895 [2019-10-07 14:25:10,251 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1060 for LOIs [2019-10-07 14:25:10,667 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:11,095 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:11,202 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:11,917 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:12,350 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:12,771 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:12,886 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:13,587 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:14,048 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:14,479 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:14,690 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:15,793 WARN L191 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:16,571 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 1214 DAG size of output: 1060 [2019-10-07 14:25:16,999 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:17,184 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:17,880 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:18,329 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:18,750 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:18,853 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:19,562 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:19,983 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:20,422 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:20,526 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:21,224 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:21,644 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:22,063 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:22,845 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:23,263 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:23,680 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:24,458 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:24,890 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:25,304 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:25,408 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:26,091 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:26,506 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:26,926 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:27,036 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:27,714 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:28,129 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:28,552 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:28,654 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:29,364 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:29,783 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:30,209 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:30,313 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:31,002 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:31,423 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:31,851 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:25:32,634 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:34,355 WARN L191 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:35,139 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:35,250 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:35,955 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:37,884 WARN L191 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:25:38,573 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:38,685 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:39,388 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:40,084 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:40,769 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:40,872 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:25:41,555 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:25:42,283 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:42,968 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:43,077 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:25:43,784 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:45,448 WARN L191 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:46,393 WARN L191 SmtUtils]: Spent 940.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:46,503 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:25:47,207 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:47,913 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:48,613 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:48,726 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:25:49,443 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:50,140 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:25:50,851 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:25:50,962 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:25:51,652 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:52,361 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:53,077 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:53,195 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:25:53,899 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:25:54,629 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:55,339 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:55,448 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:25:56,162 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:25:57,437 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:25:58,150 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:25:58,285 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:25:59,021 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:25:59,730 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:00,431 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:00,539 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:26:01,237 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:26:02,520 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:03,215 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:03,329 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:04,023 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:05,278 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:05,972 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:06,087 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:06,780 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:07,483 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:08,185 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:08,289 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:08,987 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:10,292 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:26:11,026 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:11,137 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:26:11,838 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:13,083 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:26:13,765 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:13,875 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:26:14,568 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:15,835 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:26:16,522 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:16,626 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:26:17,311 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:18,490 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:26:19,178 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:26:19,352 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:26:20,045 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:21,309 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:26:22,008 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:22,118 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:26:22,826 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:26:24,098 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:24,785 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:25,589 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:26,884 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:27,584 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:28,386 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:29,087 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:29,824 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:29,927 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:30,644 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:31,919 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:32,623 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:32,732 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:33,429 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:34,678 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:35,394 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:36,210 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:36,894 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:37,581 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:37,687 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:38,372 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:39,582 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:26:40,632 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:26:40,741 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:26:41,454 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:42,715 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:26:43,416 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:43,525 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:26:44,228 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:45,549 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:46,240 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:46,350 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:47,057 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:48,315 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:49,033 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:49,153 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:49,865 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:51,133 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:51,821 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:51,929 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:52,620 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:53,902 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:26:54,602 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:55,386 WARN L191 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:56,062 WARN L191 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:56,756 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:56,861 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:57,555 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:58,841 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:26:59,539 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:26:59,649 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:00,360 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:01,639 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:27:02,359 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:02,501 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:03,215 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:03,906 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:04,612 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:04,716 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:05,404 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:06,572 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:27:07,460 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:07,576 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:08,265 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:09,508 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:27:10,202 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:10,318 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:11,034 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:12,293 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:12,973 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:13,085 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:13,781 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:15,047 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:15,740 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:15,862 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:16,544 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:17,249 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:17,953 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:18,058 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:18,735 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:19,443 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:20,135 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:20,250 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:20,937 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:21,635 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:22,326 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:22,434 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:23,118 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:23,811 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:24,488 WARN L191 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:24,591 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:25,278 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:26,460 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1223 DAG size of output: 1216 [2019-10-07 14:27:27,148 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:27,944 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:29,102 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1225 DAG size of output: 1218 [2019-10-07 14:27:29,778 WARN L191 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:29,887 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:30,577 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:31,774 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1225 DAG size of output: 1218 [2019-10-07 14:27:32,457 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:33,258 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:34,449 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1225 DAG size of output: 1218 [2019-10-07 14:27:35,136 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:35,250 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:35,934 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:37,187 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:37,876 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:38,048 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:38,755 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:40,006 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:40,698 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:40,807 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:41,504 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:42,194 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:42,869 WARN L191 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:42,974 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:43,669 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:44,846 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:27:45,535 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:45,646 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:46,347 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:47,572 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:27:48,267 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:48,378 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:49,072 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:49,757 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:50,461 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:50,564 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:51,285 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:52,516 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1223 DAG size of output: 1216 [2019-10-07 14:27:53,209 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:53,321 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:54,036 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:54,044 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1078 for LOIs [2019-10-07 14:27:54,507 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 1078 [2019-10-07 14:27:54,954 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1078 [2019-10-07 14:27:55,757 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:55,770 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1028 for LOIs [2019-10-07 14:27:56,140 WARN L191 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:27:56,520 WARN L191 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:27:56,626 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:57,331 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:57,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:57,628 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:27:57,634 INFO L168 Benchmark]: Toolchain (without parser) took 279854.75 ms. Allocated memory was 138.4 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 100.1 MB in the beginning and 1.0 GB in the end (delta: -902.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2019-10-07 14:27:57,635 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 14:27:57,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1087.46 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 143.4 MB in the end (delta: -43.5 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:27:57,636 INFO L168 Benchmark]: Boogie Preprocessor took 194.54 ms. Allocated memory is still 202.4 MB. Free memory was 143.4 MB in the beginning and 134.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:27:57,636 INFO L168 Benchmark]: RCFGBuilder took 5510.97 ms. Allocated memory was 202.4 MB in the beginning and 299.9 MB in the end (delta: 97.5 MB). Free memory was 133.6 MB in the beginning and 237.7 MB in the end (delta: -104.2 MB). Peak memory consumption was 155.7 MB. Max. memory is 7.1 GB. [2019-10-07 14:27:57,636 INFO L168 Benchmark]: TraceAbstraction took 273056.69 ms. Allocated memory was 299.9 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 237.7 MB in the beginning and 1.0 GB in the end (delta: -764.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2019-10-07 14:27:57,638 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1087.46 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 143.4 MB in the end (delta: -43.5 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.54 ms. Allocated memory is still 202.4 MB. Free memory was 143.4 MB in the beginning and 134.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5510.97 ms. Allocated memory was 202.4 MB in the beginning and 299.9 MB in the end (delta: 97.5 MB). Free memory was 133.6 MB in the beginning and 237.7 MB in the end (delta: -104.2 MB). Peak memory consumption was 155.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 273056.69 ms. Allocated memory was 299.9 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 237.7 MB in the beginning and 1.0 GB in the end (delta: -764.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...