java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:12:42,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:12:42,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:12:42,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:12:42,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:12:42,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:12:42,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:12:42,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:12:42,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:12:42,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:12:42,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:12:42,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:12:42,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:12:42,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:12:42,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:12:42,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:12:42,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:12:42,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:12:42,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:12:42,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:12:42,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:12:42,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:12:42,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:12:42,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:12:42,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:12:42,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:12:42,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:12:42,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:12:42,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:12:42,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:12:42,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:12:42,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:12:42,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:12:42,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:12:42,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:12:42,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:12:42,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:12:42,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:12:42,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:12:42,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:12:42,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:12:42,584 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 14:12:42,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:12:42,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:12:42,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:12:42,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:12:42,622 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:12:42,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:12:42,622 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:12:42,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:12:42,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:12:42,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:12:42,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:12:42,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:12:42,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:12:42,624 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:12:42,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:12:42,624 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:12:42,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:12:42,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:12:42,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:12:42,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:12:42,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:12:42,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:12:42,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:12:42,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:12:42,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:12:42,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:12:42,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:12:42,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:12:42,629 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 14:12:42,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:12:42,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:12:42,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:12:42,949 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:12:42,949 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:12:42,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c [2019-10-07 14:12:43,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a9943c8/499e6c672f7c41f48acad45f26f500f8/FLAG719d5204e [2019-10-07 14:12:43,594 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:12:43,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product09.cil.c [2019-10-07 14:12:43,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a9943c8/499e6c672f7c41f48acad45f26f500f8/FLAG719d5204e [2019-10-07 14:12:43,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a9943c8/499e6c672f7c41f48acad45f26f500f8 [2019-10-07 14:12:43,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:12:43,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:12:43,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:12:43,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:12:43,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:12:43,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:12:43" (1/1) ... [2019-10-07 14:12:43,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:43, skipping insertion in model container [2019-10-07 14:12:43,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:12:43" (1/1) ... [2019-10-07 14:12:43,885 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:12:43,977 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:12:44,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:12:44,676 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:12:44,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:12:44,907 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:12:44,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44 WrapperNode [2019-10-07 14:12:44,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:12:44,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:12:44,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:12:44,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:12:44,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (1/1) ... [2019-10-07 14:12:44,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (1/1) ... [2019-10-07 14:12:44,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (1/1) ... [2019-10-07 14:12:44,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (1/1) ... [2019-10-07 14:12:45,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (1/1) ... [2019-10-07 14:12:45,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (1/1) ... [2019-10-07 14:12:45,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (1/1) ... [2019-10-07 14:12:45,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:12:45,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:12:45,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:12:45,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:12:45,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (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 14:12:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:12:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:12:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:12:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:12:45,142 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:12:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:12:45,144 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:12:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:12:45,145 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:12:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:12:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:12:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:12:45,147 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:12:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:12:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:12:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:12:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:12:45,150 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:12:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:12:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:12:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:12:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:12:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:12:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:12:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:12:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:12:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:12:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:12:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:12:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:12:45,153 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:12:45,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:12:45,154 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:12:45,154 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:12:45,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:12:45,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:12:45,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:12:45,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:12:45,156 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:12:45,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:12:45,156 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:12:45,156 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:12:45,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:12:45,157 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:12:45,157 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:12:45,157 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:12:45,157 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:12:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:12:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:12:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:12:45,158 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:12:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:12:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:12:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:12:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:12:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:12:45,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:12:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:12:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:12:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:12:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:12:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:12:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:12:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:12:45,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:12:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:12:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:12:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:12:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:12:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:12:45,162 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:12:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:12:45,163 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:12:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:12:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:12:45,164 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:12:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:12:45,165 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:12:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:12:45,166 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:12:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:12:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:12:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:12:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:12:45,167 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:12:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:12:45,168 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:12:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:12:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:12:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:12:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:12:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:12:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:12:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:12:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:12:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:12:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:12:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:12:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:12:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:12:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:12:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:12:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:12:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:12:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:12:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:12:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:12:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:12:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:12:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:12:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:12:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:12:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:12:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:12:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:12:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:12:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:12:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:12:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:12:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:12:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:12:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:12:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:12:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:12:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:12:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:12:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:12:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:12:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:12:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:12:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:12:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:12:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:12:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:12:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:12:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:12:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:12:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:12:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:12:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:12:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:12:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:12:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:12:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:12:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:12:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:12:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:12:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:12:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:12:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:12:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:12:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:12:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:12:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:12:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:12:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:12:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:12:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:12:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:12:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:12:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:12:49,742 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:12:49,743 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:12:49,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:12:49 BoogieIcfgContainer [2019-10-07 14:12:49,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:12:49,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:12:49,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:12:49,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:12:49,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:12:43" (1/3) ... [2019-10-07 14:12:49,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4c7c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:12:49, skipping insertion in model container [2019-10-07 14:12:49,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:12:44" (2/3) ... [2019-10-07 14:12:49,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4c7c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:12:49, skipping insertion in model container [2019-10-07 14:12:49,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:12:49" (3/3) ... [2019-10-07 14:12:49,751 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2019-10-07 14:12:49,760 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:12:49,769 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:12:49,778 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:12:49,806 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:12:49,807 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:12:49,807 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:12:49,807 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:12:49,807 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:12:49,807 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:12:49,807 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:12:49,807 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:12:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2019-10-07 14:12:49,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-07 14:12:49,857 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:12:49,858 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:12:49,860 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:12:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:12:49,866 INFO L82 PathProgramCache]: Analyzing trace with hash -197342042, now seen corresponding path program 1 times [2019-10-07 14:12:49,875 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:12:49,875 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:49,875 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:49,875 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:12:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:12:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:12:50,444 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:50,445 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:12:50,445 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 14:12:50,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 14:12:50,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 14:12:50,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:12:50,465 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 2 states. [2019-10-07 14:12:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:12:50,528 INFO L93 Difference]: Finished difference Result 440 states and 662 transitions. [2019-10-07 14:12:50,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 14:12:50,530 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 92 [2019-10-07 14:12:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:12:50,557 INFO L225 Difference]: With dead ends: 440 [2019-10-07 14:12:50,557 INFO L226 Difference]: Without dead ends: 406 [2019-10-07 14:12:50,566 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:12:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2019-10-07 14:12:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2019-10-07 14:12:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2019-10-07 14:12:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 611 transitions. [2019-10-07 14:12:50,684 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 611 transitions. Word has length 92 [2019-10-07 14:12:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:12:50,687 INFO L462 AbstractCegarLoop]: Abstraction has 406 states and 611 transitions. [2019-10-07 14:12:50,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 14:12:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 611 transitions. [2019-10-07 14:12:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-07 14:12:50,695 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:12:50,696 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:12:50,696 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:12:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:12:50,696 INFO L82 PathProgramCache]: Analyzing trace with hash 194023073, now seen corresponding path program 1 times [2019-10-07 14:12:50,697 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:12:50,697 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:50,697 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:50,697 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:12:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:12:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:12:50,955 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:50,955 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:12:50,956 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:12:50,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:12:50,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:12:50,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:12:50,961 INFO L87 Difference]: Start difference. First operand 406 states and 611 transitions. Second operand 8 states. [2019-10-07 14:12:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:12:51,084 INFO L93 Difference]: Finished difference Result 809 states and 1249 transitions. [2019-10-07 14:12:51,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:12:51,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-07 14:12:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:12:51,093 INFO L225 Difference]: With dead ends: 809 [2019-10-07 14:12:51,093 INFO L226 Difference]: Without dead ends: 445 [2019-10-07 14:12:51,103 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:12:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-07 14:12:51,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 410. [2019-10-07 14:12:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2019-10-07 14:12:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 615 transitions. [2019-10-07 14:12:51,166 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 615 transitions. Word has length 93 [2019-10-07 14:12:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:12:51,167 INFO L462 AbstractCegarLoop]: Abstraction has 410 states and 615 transitions. [2019-10-07 14:12:51,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:12:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 615 transitions. [2019-10-07 14:12:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-07 14:12:51,172 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:12:51,172 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:12:51,172 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:12:51,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:12:51,173 INFO L82 PathProgramCache]: Analyzing trace with hash -131924270, now seen corresponding path program 1 times [2019-10-07 14:12:51,173 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:12:51,173 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:51,173 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:51,173 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:12:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:12:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:12:51,440 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:51,440 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:12:51,440 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:12:51,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:12:51,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:12:51,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:12:51,443 INFO L87 Difference]: Start difference. First operand 410 states and 615 transitions. Second operand 7 states. [2019-10-07 14:12:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:12:54,808 INFO L93 Difference]: Finished difference Result 1261 states and 1954 transitions. [2019-10-07 14:12:54,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 14:12:54,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-07 14:12:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:12:54,816 INFO L225 Difference]: With dead ends: 1261 [2019-10-07 14:12:54,816 INFO L226 Difference]: Without dead ends: 893 [2019-10-07 14:12:54,818 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:12:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2019-10-07 14:12:54,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 866. [2019-10-07 14:12:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2019-10-07 14:12:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1345 transitions. [2019-10-07 14:12:54,879 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1345 transitions. Word has length 97 [2019-10-07 14:12:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:12:54,879 INFO L462 AbstractCegarLoop]: Abstraction has 866 states and 1345 transitions. [2019-10-07 14:12:54,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:12:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1345 transitions. [2019-10-07 14:12:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-07 14:12:54,882 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:12:54,883 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:12:54,883 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:12:54,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:12:54,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1573335478, now seen corresponding path program 1 times [2019-10-07 14:12:54,884 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:12:54,884 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:54,884 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:54,884 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:12:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:12:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:12:55,052 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:55,053 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:12:55,053 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:12:55,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:12:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:12:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:12:55,054 INFO L87 Difference]: Start difference. First operand 866 states and 1345 transitions. Second operand 5 states. [2019-10-07 14:12:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:12:55,126 INFO L93 Difference]: Finished difference Result 1371 states and 2142 transitions. [2019-10-07 14:12:55,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:12:55,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-07 14:12:55,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:12:55,133 INFO L225 Difference]: With dead ends: 1371 [2019-10-07 14:12:55,133 INFO L226 Difference]: Without dead ends: 888 [2019-10-07 14:12:55,136 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:12:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2019-10-07 14:12:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 878. [2019-10-07 14:12:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2019-10-07 14:12:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1360 transitions. [2019-10-07 14:12:55,191 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1360 transitions. Word has length 101 [2019-10-07 14:12:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:12:55,192 INFO L462 AbstractCegarLoop]: Abstraction has 878 states and 1360 transitions. [2019-10-07 14:12:55,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:12:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1360 transitions. [2019-10-07 14:12:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-07 14:12:55,195 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:12:55,195 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:12:55,196 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:12:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:12:55,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1632653326, now seen corresponding path program 1 times [2019-10-07 14:12:55,196 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:12:55,196 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:55,196 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:55,197 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:12:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:12:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:12:55,417 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:55,417 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:12:55,417 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:12:55,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:12:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:12:55,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:12:55,418 INFO L87 Difference]: Start difference. First operand 878 states and 1360 transitions. Second operand 8 states. [2019-10-07 14:12:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:12:58,793 INFO L93 Difference]: Finished difference Result 1861 states and 2887 transitions. [2019-10-07 14:12:58,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:12:58,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-07 14:12:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:12:58,807 INFO L225 Difference]: With dead ends: 1861 [2019-10-07 14:12:58,807 INFO L226 Difference]: Without dead ends: 1270 [2019-10-07 14:12:58,813 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:12:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2019-10-07 14:12:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1220. [2019-10-07 14:12:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-10-07 14:12:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1848 transitions. [2019-10-07 14:12:58,890 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1848 transitions. Word has length 105 [2019-10-07 14:12:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:12:58,890 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1848 transitions. [2019-10-07 14:12:58,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:12:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1848 transitions. [2019-10-07 14:12:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 14:12:58,894 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:12:58,894 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:12:58,894 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:12:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:12:58,894 INFO L82 PathProgramCache]: Analyzing trace with hash -421968763, now seen corresponding path program 1 times [2019-10-07 14:12:58,895 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:12:58,895 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:58,895 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:58,895 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:12:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:12:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:12:59,066 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:59,067 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:12:59,067 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:12:59,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:12:59,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:12:59,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:12:59,071 INFO L87 Difference]: Start difference. First operand 1220 states and 1848 transitions. Second operand 7 states. [2019-10-07 14:12:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:12:59,273 INFO L93 Difference]: Finished difference Result 2297 states and 3563 transitions. [2019-10-07 14:12:59,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:12:59,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2019-10-07 14:12:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:12:59,288 INFO L225 Difference]: With dead ends: 2297 [2019-10-07 14:12:59,288 INFO L226 Difference]: Without dead ends: 1220 [2019-10-07 14:12:59,293 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:12:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2019-10-07 14:12:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2019-10-07 14:12:59,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2019-10-07 14:12:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1816 transitions. [2019-10-07 14:12:59,367 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1816 transitions. Word has length 108 [2019-10-07 14:12:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:12:59,369 INFO L462 AbstractCegarLoop]: Abstraction has 1220 states and 1816 transitions. [2019-10-07 14:12:59,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:12:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1816 transitions. [2019-10-07 14:12:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:12:59,373 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:12:59,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:12:59,374 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:12:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:12:59,374 INFO L82 PathProgramCache]: Analyzing trace with hash 194645655, now seen corresponding path program 1 times [2019-10-07 14:12:59,374 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:12:59,375 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:59,375 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:59,375 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:12:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:12:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:12:59,626 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 14:12:59,627 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:12:59,627 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:12:59,627 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:12:59,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:12:59,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:12:59,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:12:59,628 INFO L87 Difference]: Start difference. First operand 1220 states and 1816 transitions. Second operand 7 states. [2019-10-07 14:13:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:02,435 INFO L93 Difference]: Finished difference Result 2166 states and 3233 transitions. [2019-10-07 14:13:02,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:13:02,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2019-10-07 14:13:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:02,445 INFO L225 Difference]: With dead ends: 2166 [2019-10-07 14:13:02,446 INFO L226 Difference]: Without dead ends: 1290 [2019-10-07 14:13:02,451 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:13:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2019-10-07 14:13:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1247. [2019-10-07 14:13:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2019-10-07 14:13:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1850 transitions. [2019-10-07 14:13:02,514 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1850 transitions. Word has length 110 [2019-10-07 14:13:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:02,514 INFO L462 AbstractCegarLoop]: Abstraction has 1247 states and 1850 transitions. [2019-10-07 14:13:02,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:13:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1850 transitions. [2019-10-07 14:13:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 14:13:02,519 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:02,519 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, 1, 1, 1, 1, 1, 1] [2019-10-07 14:13:02,520 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:02,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash -784905419, now seen corresponding path program 1 times [2019-10-07 14:13:02,520 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:02,520 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:02,521 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:02,521 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:02,680 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 14:13:02,680 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:02,680 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:13:02,680 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:13:02,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:02,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:02,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:13:02,682 INFO L87 Difference]: Start difference. First operand 1247 states and 1850 transitions. Second operand 4 states. [2019-10-07 14:13:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:04,139 INFO L93 Difference]: Finished difference Result 3781 states and 5741 transitions. [2019-10-07 14:13:04,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:04,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-07 14:13:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:04,162 INFO L225 Difference]: With dead ends: 3781 [2019-10-07 14:13:04,162 INFO L226 Difference]: Without dead ends: 2576 [2019-10-07 14:13:04,170 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:13:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2019-10-07 14:13:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2431. [2019-10-07 14:13:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-10-07 14:13:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3664 transitions. [2019-10-07 14:13:04,356 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3664 transitions. Word has length 117 [2019-10-07 14:13:04,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:04,358 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 3664 transitions. [2019-10-07 14:13:04,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:04,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3664 transitions. [2019-10-07 14:13:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-07 14:13:04,361 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:04,361 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, 1, 1, 1, 1, 1] [2019-10-07 14:13:04,362 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:04,362 INFO L82 PathProgramCache]: Analyzing trace with hash -470585906, now seen corresponding path program 1 times [2019-10-07 14:13:04,362 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:04,362 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:04,363 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:04,363 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:04,531 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 14:13:04,531 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:04,531 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:13:04,532 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:13:04,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:04,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:04,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:13:04,533 INFO L87 Difference]: Start difference. First operand 2431 states and 3664 transitions. Second operand 4 states. [2019-10-07 14:13:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:05,973 INFO L93 Difference]: Finished difference Result 7255 states and 11187 transitions. [2019-10-07 14:13:05,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:05,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-10-07 14:13:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:06,011 INFO L225 Difference]: With dead ends: 7255 [2019-10-07 14:13:06,012 INFO L226 Difference]: Without dead ends: 4867 [2019-10-07 14:13:06,025 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:13:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2019-10-07 14:13:06,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4689. [2019-10-07 14:13:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4689 states. [2019-10-07 14:13:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 7158 transitions. [2019-10-07 14:13:06,356 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 7158 transitions. Word has length 115 [2019-10-07 14:13:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:06,356 INFO L462 AbstractCegarLoop]: Abstraction has 4689 states and 7158 transitions. [2019-10-07 14:13:06,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 7158 transitions. [2019-10-07 14:13:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-07 14:13:06,360 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:06,360 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, 1, 1, 1, 1, 1, 1] [2019-10-07 14:13:06,360 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:06,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1704539365, now seen corresponding path program 1 times [2019-10-07 14:13:06,361 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:06,361 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:06,362 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:06,362 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:06,513 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 14:13:06,513 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:06,514 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:13:06,514 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:13:06,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:06,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:06,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:13:06,515 INFO L87 Difference]: Start difference. First operand 4689 states and 7158 transitions. Second operand 4 states. [2019-10-07 14:13:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:08,352 INFO L93 Difference]: Finished difference Result 14111 states and 22271 transitions. [2019-10-07 14:13:08,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:08,352 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-07 14:13:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:08,434 INFO L225 Difference]: With dead ends: 14111 [2019-10-07 14:13:08,435 INFO L226 Difference]: Without dead ends: 9467 [2019-10-07 14:13:08,470 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:13:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2019-10-07 14:13:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 9224. [2019-10-07 14:13:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9224 states. [2019-10-07 14:13:09,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 14364 transitions. [2019-10-07 14:13:09,449 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 14364 transitions. Word has length 116 [2019-10-07 14:13:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:09,452 INFO L462 AbstractCegarLoop]: Abstraction has 9224 states and 14364 transitions. [2019-10-07 14:13:09,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 14364 transitions. [2019-10-07 14:13:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:13:09,457 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:09,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:13:09,458 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1706619700, now seen corresponding path program 1 times [2019-10-07 14:13:09,459 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:09,459 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:09,460 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:09,460 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:09,683 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 14:13:09,683 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:09,684 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:13:09,684 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:13:09,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:09,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:09,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:13:09,685 INFO L87 Difference]: Start difference. First operand 9224 states and 14364 transitions. Second operand 4 states. [2019-10-07 14:13:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:12,316 INFO L93 Difference]: Finished difference Result 27878 states and 45768 transitions. [2019-10-07 14:13:12,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:12,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-07 14:13:12,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:12,459 INFO L225 Difference]: With dead ends: 27878 [2019-10-07 14:13:12,460 INFO L226 Difference]: Without dead ends: 18703 [2019-10-07 14:13:12,520 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:13:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18703 states. [2019-10-07 14:13:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18703 to 18331. [2019-10-07 14:13:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18331 states. [2019-10-07 14:13:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 29522 transitions. [2019-10-07 14:13:14,405 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 29522 transitions. Word has length 120 [2019-10-07 14:13:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:14,405 INFO L462 AbstractCegarLoop]: Abstraction has 18331 states and 29522 transitions. [2019-10-07 14:13:14,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 29522 transitions. [2019-10-07 14:13:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 14:13:14,409 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:14,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:13:14,410 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:14,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1364332793, now seen corresponding path program 1 times [2019-10-07 14:13:14,410 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:14,411 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:14,411 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:14,411 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:14,553 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 14:13:14,554 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:14,554 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:13:14,555 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:13:14,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:14,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:14,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:13:14,559 INFO L87 Difference]: Start difference. First operand 18331 states and 29522 transitions. Second operand 4 states. [2019-10-07 14:13:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:16,984 INFO L93 Difference]: Finished difference Result 55563 states and 97417 transitions. [2019-10-07 14:13:16,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:16,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-07 14:13:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:17,224 INFO L225 Difference]: With dead ends: 55563 [2019-10-07 14:13:17,224 INFO L226 Difference]: Without dead ends: 37277 [2019-10-07 14:13:17,299 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:13:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37277 states. [2019-10-07 14:13:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37277 to 36374. [2019-10-07 14:13:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36374 states. [2019-10-07 14:13:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36374 states to 36374 states and 61305 transitions. [2019-10-07 14:13:20,515 INFO L78 Accepts]: Start accepts. Automaton has 36374 states and 61305 transitions. Word has length 121 [2019-10-07 14:13:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:20,516 INFO L462 AbstractCegarLoop]: Abstraction has 36374 states and 61305 transitions. [2019-10-07 14:13:20,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:20,516 INFO L276 IsEmpty]: Start isEmpty. Operand 36374 states and 61305 transitions. [2019-10-07 14:13:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-07 14:13:20,524 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:20,524 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-07 14:13:20,524 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:20,524 INFO L82 PathProgramCache]: Analyzing trace with hash -664013699, now seen corresponding path program 1 times [2019-10-07 14:13:20,525 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:20,525 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:20,525 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:20,525 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 14:13:20,676 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:20,676 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:13:20,676 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 14:13:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:21,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:13:21,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:13:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:13:21,306 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:13:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 14:13:21,720 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:13:21,721 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:13:21,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:21,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:21,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:13:21,723 INFO L87 Difference]: Start difference. First operand 36374 states and 61305 transitions. Second operand 4 states. [2019-10-07 14:13:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:24,081 INFO L93 Difference]: Finished difference Result 76449 states and 134164 transitions. [2019-10-07 14:13:24,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:24,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2019-10-07 14:13:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:24,337 INFO L225 Difference]: With dead ends: 76449 [2019-10-07 14:13:24,337 INFO L226 Difference]: Without dead ends: 40118 [2019-10-07 14:13:24,448 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:13:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40118 states. [2019-10-07 14:13:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40118 to 40118. [2019-10-07 14:13:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40118 states. [2019-10-07 14:13:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40118 states to 40118 states and 68313 transitions. [2019-10-07 14:13:27,687 INFO L78 Accepts]: Start accepts. Automaton has 40118 states and 68313 transitions. Word has length 165 [2019-10-07 14:13:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:27,688 INFO L462 AbstractCegarLoop]: Abstraction has 40118 states and 68313 transitions. [2019-10-07 14:13:27,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 40118 states and 68313 transitions. [2019-10-07 14:13:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-07 14:13:27,696 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:27,697 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2019-10-07 14:13:27,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:13:27,909 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:27,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:27,909 INFO L82 PathProgramCache]: Analyzing trace with hash -69019552, now seen corresponding path program 1 times [2019-10-07 14:13:27,911 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:27,912 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:27,912 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:27,912 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:13:28,400 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:28,401 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:13:28,401 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 14:13:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:30,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:13:30,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:13:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 14:13:30,561 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:13:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-07 14:13:30,894 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:13:30,894 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:13:30,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:30,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:30,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:13:30,895 INFO L87 Difference]: Start difference. First operand 40118 states and 68313 transitions. Second operand 4 states. [2019-10-07 14:13:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:32,277 INFO L93 Difference]: Finished difference Result 83937 states and 148081 transitions. [2019-10-07 14:13:32,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:32,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-07 14:13:32,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:32,451 INFO L225 Difference]: With dead ends: 83937 [2019-10-07 14:13:32,451 INFO L226 Difference]: Without dead ends: 43862 [2019-10-07 14:13:32,549 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:13:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43862 states. [2019-10-07 14:13:33,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43862 to 43862. [2019-10-07 14:13:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43862 states. [2019-10-07 14:13:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43862 states to 43862 states and 75321 transitions. [2019-10-07 14:13:34,422 INFO L78 Accepts]: Start accepts. Automaton has 43862 states and 75321 transitions. Word has length 170 [2019-10-07 14:13:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:34,423 INFO L462 AbstractCegarLoop]: Abstraction has 43862 states and 75321 transitions. [2019-10-07 14:13:34,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 43862 states and 75321 transitions. [2019-10-07 14:13:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-07 14:13:34,430 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:34,430 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2019-10-07 14:13:34,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:13:34,638 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:34,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1229530640, now seen corresponding path program 1 times [2019-10-07 14:13:34,638 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:34,638 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:34,639 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:34,639 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-07 14:13:34,963 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:34,963 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:13:34,963 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 14:13:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:35,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:13:35,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:13:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:13:35,612 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:13:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-07 14:13:35,964 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:13:35,964 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:13:35,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:35,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:35,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:13:35,966 INFO L87 Difference]: Start difference. First operand 43862 states and 75321 transitions. Second operand 4 states. [2019-10-07 14:13:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:38,749 INFO L93 Difference]: Finished difference Result 91425 states and 161998 transitions. [2019-10-07 14:13:38,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:38,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2019-10-07 14:13:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:38,930 INFO L225 Difference]: With dead ends: 91425 [2019-10-07 14:13:38,930 INFO L226 Difference]: Without dead ends: 47606 [2019-10-07 14:13:39,042 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 355 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:13:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47606 states. [2019-10-07 14:13:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47606 to 47606. [2019-10-07 14:13:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47606 states. [2019-10-07 14:13:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47606 states to 47606 states and 82329 transitions. [2019-10-07 14:13:40,417 INFO L78 Accepts]: Start accepts. Automaton has 47606 states and 82329 transitions. Word has length 174 [2019-10-07 14:13:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:40,418 INFO L462 AbstractCegarLoop]: Abstraction has 47606 states and 82329 transitions. [2019-10-07 14:13:40,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 47606 states and 82329 transitions. [2019-10-07 14:13:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-07 14:13:40,426 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:40,426 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2019-10-07 14:13:40,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:13:40,633 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:40,634 INFO L82 PathProgramCache]: Analyzing trace with hash -862720809, now seen corresponding path program 1 times [2019-10-07 14:13:40,634 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:40,634 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:40,634 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:40,634 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:41,108 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2019-10-07 14:13:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-10-07 14:13:41,371 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:41,372 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:13:41,372 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 14:13:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:42,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 3303 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:13:42,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:13:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:13:42,123 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:13:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-07 14:13:42,483 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:13:42,483 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19, 4] total 22 [2019-10-07 14:13:42,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:13:42,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:13:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:13:42,484 INFO L87 Difference]: Start difference. First operand 47606 states and 82329 transitions. Second operand 4 states. [2019-10-07 14:13:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:43,575 INFO L93 Difference]: Finished difference Result 98913 states and 175915 transitions. [2019-10-07 14:13:43,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:43,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-07 14:13:43,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:43,725 INFO L225 Difference]: With dead ends: 98913 [2019-10-07 14:13:43,726 INFO L226 Difference]: Without dead ends: 51350 [2019-10-07 14:13:43,806 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 361 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:13:43,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51350 states. [2019-10-07 14:13:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51350 to 51350. [2019-10-07 14:13:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51350 states. [2019-10-07 14:13:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51350 states to 51350 states and 89337 transitions. [2019-10-07 14:13:47,059 INFO L78 Accepts]: Start accepts. Automaton has 51350 states and 89337 transitions. Word has length 177 [2019-10-07 14:13:47,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:47,060 INFO L462 AbstractCegarLoop]: Abstraction has 51350 states and 89337 transitions. [2019-10-07 14:13:47,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:13:47,060 INFO L276 IsEmpty]: Start isEmpty. Operand 51350 states and 89337 transitions. [2019-10-07 14:13:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-07 14:13:47,069 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:47,069 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2019-10-07 14:13:47,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:13:47,276 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:47,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:47,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1950872793, now seen corresponding path program 1 times [2019-10-07 14:13:47,277 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:47,277 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:47,277 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:47,278 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:13:47,583 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:47,583 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:13:47,583 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 14:13:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:48,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 3305 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:13:48,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:13:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:13:48,294 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:13:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-07 14:13:48,711 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:13:48,711 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [19] total 22 [2019-10-07 14:13:48,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:13:48,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:13:48,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:13:48,713 INFO L87 Difference]: Start difference. First operand 51350 states and 89337 transitions. Second operand 5 states. [2019-10-07 14:13:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:50,259 INFO L93 Difference]: Finished difference Result 106401 states and 189832 transitions. [2019-10-07 14:13:50,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:13:50,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2019-10-07 14:13:50,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:50,414 INFO L225 Difference]: With dead ends: 106401 [2019-10-07 14:13:50,414 INFO L226 Difference]: Without dead ends: 55094 [2019-10-07 14:13:50,491 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:13:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55094 states. [2019-10-07 14:13:52,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55094 to 55094. [2019-10-07 14:13:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55094 states. [2019-10-07 14:13:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55094 states to 55094 states and 96345 transitions. [2019-10-07 14:13:52,337 INFO L78 Accepts]: Start accepts. Automaton has 55094 states and 96345 transitions. Word has length 179 [2019-10-07 14:13:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:13:52,338 INFO L462 AbstractCegarLoop]: Abstraction has 55094 states and 96345 transitions. [2019-10-07 14:13:52,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:13:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 55094 states and 96345 transitions. [2019-10-07 14:13:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-07 14:13:52,342 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:13:52,342 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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, 1] [2019-10-07 14:13:52,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:13:52,544 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:13:52,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:13:52,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1221209000, now seen corresponding path program 1 times [2019-10-07 14:13:52,545 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:13:52,545 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:52,545 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:52,546 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:13:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:13:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:52,932 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-07 14:13:52,932 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:13:52,932 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:13:52,933 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 14:13:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:13:53,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 3302 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:13:53,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:13:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 14:13:53,884 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:13:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 14:13:54,467 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:13:54,468 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [19] total 26 [2019-10-07 14:13:54,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:13:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:13:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2019-10-07 14:13:54,473 INFO L87 Difference]: Start difference. First operand 55094 states and 96345 transitions. Second operand 9 states. [2019-10-07 14:13:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:13:58,567 INFO L93 Difference]: Finished difference Result 56542 states and 103383 transitions. [2019-10-07 14:13:58,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:13:58,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2019-10-07 14:13:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:13:58,748 INFO L225 Difference]: With dead ends: 56542 [2019-10-07 14:13:58,748 INFO L226 Difference]: Without dead ends: 56323 [2019-10-07 14:13:58,764 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 359 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2019-10-07 14:13:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56323 states. [2019-10-07 14:14:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56323 to 55577. [2019-10-07 14:14:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55577 states. [2019-10-07 14:14:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55577 states to 55577 states and 98663 transitions. [2019-10-07 14:14:00,175 INFO L78 Accepts]: Start accepts. Automaton has 55577 states and 98663 transitions. Word has length 179 [2019-10-07 14:14:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:14:00,175 INFO L462 AbstractCegarLoop]: Abstraction has 55577 states and 98663 transitions. [2019-10-07 14:14:00,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:14:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 55577 states and 98663 transitions. [2019-10-07 14:14:00,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-07 14:14:00,180 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:14:00,180 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1] [2019-10-07 14:14:00,381 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:14:00,382 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:14:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:14:00,383 INFO L82 PathProgramCache]: Analyzing trace with hash 533859876, now seen corresponding path program 1 times [2019-10-07 14:14:00,383 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:14:00,384 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:00,384 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:00,384 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:00,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:14:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-07 14:14:00,777 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:00,777 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:14:00,777 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 14:14:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:01,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 3317 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:14:01,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:14:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 14:14:01,518 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:14:02,014 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-07 14:14:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-10-07 14:14:02,207 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:14:02,207 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [19] total 22 [2019-10-07 14:14:02,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:14:02,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:14:02,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:14:02,210 INFO L87 Difference]: Start difference. First operand 55577 states and 98663 transitions. Second operand 5 states. [2019-10-07 14:14:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:14:03,293 INFO L93 Difference]: Finished difference Result 55796 states and 98907 transitions. [2019-10-07 14:14:03,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:14:03,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2019-10-07 14:14:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:14:03,450 INFO L225 Difference]: With dead ends: 55796 [2019-10-07 14:14:03,451 INFO L226 Difference]: Without dead ends: 55577 [2019-10-07 14:14:03,477 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:14:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55577 states. [2019-10-07 14:14:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55577 to 55577. [2019-10-07 14:14:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55577 states. [2019-10-07 14:14:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55577 states to 55577 states and 98539 transitions. [2019-10-07 14:14:05,327 INFO L78 Accepts]: Start accepts. Automaton has 55577 states and 98539 transitions. Word has length 184 [2019-10-07 14:14:05,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:14:05,328 INFO L462 AbstractCegarLoop]: Abstraction has 55577 states and 98539 transitions. [2019-10-07 14:14:05,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:14:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand 55577 states and 98539 transitions. [2019-10-07 14:14:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-07 14:14:05,334 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:14:05,334 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:14:05,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:14:05,536 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:14:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:14:05,536 INFO L82 PathProgramCache]: Analyzing trace with hash 2089434069, now seen corresponding path program 1 times [2019-10-07 14:14:05,537 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:14:05,537 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:05,537 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:05,538 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:14:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-07 14:14:05,889 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:05,889 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:14:05,889 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 14:14:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:06,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-07 14:14:06,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:14:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-07 14:14:06,756 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:14:07,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:14:07,487 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:14:07,487 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [19] total 33 [2019-10-07 14:14:07,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-07 14:14:07,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-07 14:14:07,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2019-10-07 14:14:07,491 INFO L87 Difference]: Start difference. First operand 55577 states and 98539 transitions. Second operand 16 states. [2019-10-07 14:14:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:14:15,431 INFO L93 Difference]: Finished difference Result 129144 states and 237819 transitions. [2019-10-07 14:14:15,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-07 14:14:15,431 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 199 [2019-10-07 14:14:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:14:15,646 INFO L225 Difference]: With dead ends: 129144 [2019-10-07 14:14:15,646 INFO L226 Difference]: Without dead ends: 66287 [2019-10-07 14:14:15,743 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 400 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=261, Invalid=1995, Unknown=0, NotChecked=0, Total=2256 [2019-10-07 14:14:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66287 states. [2019-10-07 14:14:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66287 to 65665. [2019-10-07 14:14:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65665 states. [2019-10-07 14:14:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65665 states to 65665 states and 115487 transitions. [2019-10-07 14:14:17,965 INFO L78 Accepts]: Start accepts. Automaton has 65665 states and 115487 transitions. Word has length 199 [2019-10-07 14:14:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:14:17,965 INFO L462 AbstractCegarLoop]: Abstraction has 65665 states and 115487 transitions. [2019-10-07 14:14:17,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-07 14:14:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 65665 states and 115487 transitions. [2019-10-07 14:14:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-07 14:14:17,971 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:14:17,972 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:14:18,179 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:14:18,180 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:14:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:14:18,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1319810435, now seen corresponding path program 1 times [2019-10-07 14:14:18,181 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:14:18,182 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:18,182 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:18,182 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:14:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-07 14:14:18,533 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:18,533 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:14:18,533 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 14:14:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:19,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-07 14:14:19,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:14:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-07 14:14:19,400 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:14:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:14:20,055 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:14:20,055 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 31 [2019-10-07 14:14:20,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:14:20,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:14:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2019-10-07 14:14:20,056 INFO L87 Difference]: Start difference. First operand 65665 states and 115487 transitions. Second operand 14 states. [2019-10-07 14:14:27,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:14:27,050 INFO L93 Difference]: Finished difference Result 153592 states and 281540 transitions. [2019-10-07 14:14:27,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:14:27,050 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 200 [2019-10-07 14:14:27,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:14:27,355 INFO L225 Difference]: With dead ends: 153592 [2019-10-07 14:14:27,355 INFO L226 Difference]: Without dead ends: 87937 [2019-10-07 14:14:27,490 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=1610, Unknown=0, NotChecked=0, Total=1806 [2019-10-07 14:14:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87937 states. [2019-10-07 14:14:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87937 to 87470. [2019-10-07 14:14:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87470 states. [2019-10-07 14:14:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87470 states to 87470 states and 145410 transitions. [2019-10-07 14:14:30,291 INFO L78 Accepts]: Start accepts. Automaton has 87470 states and 145410 transitions. Word has length 200 [2019-10-07 14:14:30,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:14:30,292 INFO L462 AbstractCegarLoop]: Abstraction has 87470 states and 145410 transitions. [2019-10-07 14:14:30,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:14:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 87470 states and 145410 transitions. [2019-10-07 14:14:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-07 14:14:30,297 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:14:30,297 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:14:30,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:14:30,506 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:14:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:14:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash -755494696, now seen corresponding path program 1 times [2019-10-07 14:14:30,507 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:14:30,507 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:30,507 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:30,507 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:14:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-07 14:14:33,689 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:33,689 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:14:33,689 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 14:14:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:34,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 3369 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-07 14:14:34,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:14:34,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:14:34,592 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:14:34,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:14:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:14:35,198 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:14:35,198 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [19] total 24 [2019-10-07 14:14:35,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:14:35,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:14:35,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:14:35,200 INFO L87 Difference]: Start difference. First operand 87470 states and 145410 transitions. Second operand 7 states. [2019-10-07 14:14:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:14:36,636 INFO L93 Difference]: Finished difference Result 88737 states and 146865 transitions. [2019-10-07 14:14:36,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:14:36,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2019-10-07 14:14:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:14:37,048 INFO L225 Difference]: With dead ends: 88737 [2019-10-07 14:14:37,049 INFO L226 Difference]: Without dead ends: 88518 [2019-10-07 14:14:37,088 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2019-10-07 14:14:37,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88518 states. [2019-10-07 14:14:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88518 to 88416. [2019-10-07 14:14:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88416 states. [2019-10-07 14:14:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88416 states to 88416 states and 146358 transitions. [2019-10-07 14:14:39,842 INFO L78 Accepts]: Start accepts. Automaton has 88416 states and 146358 transitions. Word has length 202 [2019-10-07 14:14:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:14:39,843 INFO L462 AbstractCegarLoop]: Abstraction has 88416 states and 146358 transitions. [2019-10-07 14:14:39,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:14:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 88416 states and 146358 transitions. [2019-10-07 14:14:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2019-10-07 14:14:39,850 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:14:39,851 INFO L385 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 8, 8, 6, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:14:40,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:14:40,059 INFO L410 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:14:40,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:14:40,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1741146856, now seen corresponding path program 1 times [2019-10-07 14:14:40,060 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:14:40,060 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:40,060 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:40,060 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:14:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:14:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2019-10-07 14:14:41,719 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:14:41,719 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:14:41,719 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 14:14:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:14:42,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 4247 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-07 14:14:42,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:14:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 110 proven. 238 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2019-10-07 14:14:42,979 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:14:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2019-10-07 14:14:44,230 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:14:44,259 INFO L162 IcfgInterpreter]: Started Sifa with 181 locations of interest [2019-10-07 14:14:44,259 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:14:44,266 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:14:44,273 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:14:44,273 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:15:18,336 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 758 [2019-10-07 14:15:25,472 WARN L191 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:15:25,834 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 844 [2019-10-07 14:15:26,072 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 844 [2019-10-07 14:15:26,300 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 844 [2019-10-07 14:15:26,820 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:27,308 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:27,766 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:28,296 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:29,236 WARN L191 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 1030 DAG size of output: 1028 [2019-10-07 14:15:29,686 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:30,212 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:30,662 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:31,119 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:31,643 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 1028 [2019-10-07 14:15:31,660 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 382 for LOIs [2019-10-07 14:15:31,899 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-10-07 14:15:32,007 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-10-07 14:15:32,354 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 911 [2019-10-07 14:15:32,355 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1076 for LOIs [2019-10-07 14:15:32,797 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:33,239 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:33,363 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:34,107 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:34,574 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:35,012 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:35,217 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:35,978 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:36,467 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:36,905 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:37,035 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:37,782 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:38,628 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 1246 DAG size of output: 1076 [2019-10-07 14:15:39,067 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:39,321 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:40,164 WARN L191 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:40,627 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:41,065 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:41,188 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:41,926 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:42,362 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:42,802 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:42,920 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:43,661 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:44,099 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:44,538 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:44,656 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:45,400 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:45,847 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:46,287 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:46,406 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:47,146 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:47,584 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:48,021 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:48,142 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:48,892 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:49,330 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:49,780 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:49,899 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:50,639 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:51,081 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:51,523 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:51,642 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:52,386 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:52,822 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:53,260 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:53,379 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:54,115 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:54,555 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:54,996 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1076 [2019-10-07 14:15:55,114 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:55,856 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:56,896 WARN L191 SmtUtils]: Spent 994.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:57,640 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:57,770 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:15:58,511 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:15:59,988 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:16:00,730 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:00,857 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:01,609 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:02,353 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:03,096 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:03,214 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:03,960 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:04,842 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:05,594 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:05,725 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:06,480 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:07,924 WARN L191 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:08,681 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:08,810 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:09,555 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:10,305 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:11,055 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:11,177 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:11,922 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:12,677 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:16:13,434 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:16:13,565 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:14,315 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:15,061 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:15,813 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:15,943 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:16,694 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:16:17,482 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:18,235 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:18,366 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:19,124 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:16:20,537 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1252 DAG size of output: 1248 [2019-10-07 14:16:21,306 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:21,438 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:22,198 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:16:22,951 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:23,704 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:23,827 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:24,585 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:16:25,994 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:16:26,756 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:26,931 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:27,679 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:29,060 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:16:29,819 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:29,948 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:30,708 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:31,456 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:32,215 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:32,335 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:33,086 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:33,868 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:34,626 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:34,754 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:35,513 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:36,284 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:37,038 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:37,165 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:37,928 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:38,686 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:39,443 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:39,564 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:40,325 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:41,649 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1250 DAG size of output: 1246 [2019-10-07 14:16:42,404 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:16:42,532 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:43,290 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:44,675 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1252 DAG size of output: 1248 [2019-10-07 14:16:45,435 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:16:45,563 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:16:46,468 WARN L191 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:16:47,856 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:16:48,608 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:48,734 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:49,485 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:50,859 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:16:51,624 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:51,751 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:52,507 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:53,262 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:54,014 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:54,133 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:54,890 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:56,293 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:16:57,045 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:57,176 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:16:57,927 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:16:59,300 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:17:00,050 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:00,181 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:00,933 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:01,688 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:02,447 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:02,567 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:03,321 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:04,106 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:04,867 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:04,994 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:05,755 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:06,527 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:07,288 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:07,415 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:08,179 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:08,943 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:09,702 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:09,822 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:10,582 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:11,902 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1255 DAG size of output: 1248 [2019-10-07 14:17:12,660 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:12,789 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:13,549 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:14,946 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:17:15,697 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:15,824 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:16,574 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:17,988 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:17:18,745 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:18,872 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:19,622 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:20,377 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:21,130 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:21,258 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:22,017 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:22,807 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:23,572 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:23,697 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:24,456 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:25,247 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:26,011 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:26,154 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:27,055 WARN L191 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:28,456 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:17:29,216 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:29,354 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:30,107 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:31,523 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:17:32,282 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:32,407 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:33,163 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:34,602 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:17:35,352 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:35,476 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:36,229 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:37,609 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:17:38,362 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:38,489 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:39,241 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:40,001 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:40,758 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:40,878 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:41,634 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:42,428 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:43,198 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:43,355 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:44,115 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:45,493 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1250 DAG size of output: 1246 [2019-10-07 14:17:46,253 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:17:46,380 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:47,141 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:48,609 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 1250 DAG size of output: 1246 [2019-10-07 14:17:49,361 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:17:49,483 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:50,242 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:51,560 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1255 DAG size of output: 1248 [2019-10-07 14:17:52,325 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:52,451 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:53,210 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:17:54,601 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1257 DAG size of output: 1250 [2019-10-07 14:17:55,367 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:17:55,493 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:17:56,256 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:17:57,660 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:17:58,415 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:17:58,539 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:17:59,290 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:00,670 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1246 DAG size of output: 1244 [2019-10-07 14:18:01,425 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:01,553 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:18:02,308 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:03,066 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:03,812 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:03,931 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:18:04,686 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:06,158 WARN L191 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 1250 DAG size of output: 1246 [2019-10-07 14:18:06,916 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:18:07,042 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:18:07,795 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:18:09,186 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1250 DAG size of output: 1246 [2019-10-07 14:18:09,946 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:18:10,071 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:18:10,828 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:18:11,587 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:18:12,347 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1246 [2019-10-07 14:18:12,469 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:18:13,230 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:18:14,543 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1255 DAG size of output: 1248 [2019-10-07 14:18:15,308 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:18:15,529 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:18:16,402 WARN L191 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 1248 [2019-10-07 14:18:17,757 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1257 DAG size of output: 1250 [2019-10-07 14:18:18,526 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:18:18,653 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:18:19,417 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:18:20,754 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1257 DAG size of output: 1250 [2019-10-07 14:18:21,519 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:18:21,652 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:18:22,411 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:18:23,734 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1257 DAG size of output: 1250 [2019-10-07 14:18:24,505 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:18:24,636 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 445 [2019-10-07 14:18:25,401 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1250 [2019-10-07 14:18:25,408 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1100 for LOIs [2019-10-07 14:18:25,889 WARN L191 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 14:18:26,373 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 1100 [2019-10-07 14:18:26,495 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:18:27,256 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:27,806 WARN L191 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:28,329 WARN L191 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:28,450 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:18:29,202 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:30,106 WARN L191 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 1246 DAG size of output: 1110 [2019-10-07 14:18:30,608 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:30,732 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:18:31,482 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:32,001 WARN L191 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:32,501 WARN L191 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:32,620 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:18:33,378 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:33,882 WARN L191 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:34,384 WARN L191 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:34,504 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:18:35,253 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:35,754 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:36,267 WARN L191 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:18:36,386 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 442 [2019-10-07 14:18:37,143 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1244 [2019-10-07 14:18:37,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:18:37,416 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: CallReturnSummary for callee initPersonOnFloor 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: CallReturnSummary for callee initPersonOnFloor 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.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 14:18:37,421 INFO L168 Benchmark]: Toolchain (without parser) took 353552.71 ms. Allocated memory was 144.7 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 98.2 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2019-10-07 14:18:37,422 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:18:37,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1038.03 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 98.0 MB in the beginning and 142.4 MB in the end (delta: -44.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:18:37,422 INFO L168 Benchmark]: Boogie Preprocessor took 162.27 ms. Allocated memory is still 200.8 MB. Free memory was 142.4 MB in the beginning and 132.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:18:37,423 INFO L168 Benchmark]: RCFGBuilder took 4673.56 ms. Allocated memory was 200.8 MB in the beginning and 303.0 MB in the end (delta: 102.2 MB). Free memory was 132.6 MB in the beginning and 246.7 MB in the end (delta: -114.1 MB). Peak memory consumption was 161.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:18:37,423 INFO L168 Benchmark]: TraceAbstraction took 347674.42 ms. Allocated memory was 303.0 MB in the beginning and 3.5 GB in the end (delta: 3.2 GB). Free memory was 246.7 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2019-10-07 14:18:37,424 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1038.03 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 98.0 MB in the beginning and 142.4 MB in the end (delta: -44.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.27 ms. Allocated memory is still 200.8 MB. Free memory was 142.4 MB in the beginning and 132.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4673.56 ms. Allocated memory was 200.8 MB in the beginning and 303.0 MB in the end (delta: 102.2 MB). Free memory was 132.6 MB in the beginning and 246.7 MB in the end (delta: -114.1 MB). Peak memory consumption was 161.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 347674.42 ms. Allocated memory was 303.0 MB in the beginning and 3.5 GB in the end (delta: 3.2 GB). Free memory was 246.7 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.3 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: CallReturnSummary for callee initPersonOnFloor de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor: 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...