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_spec13_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:58:38,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:58:38,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:58:38,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:58:38,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:58:38,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:58:38,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:58:38,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:58:38,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:58:38,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:58:38,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:58:38,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:58:38,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:58:38,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:58:38,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:58:38,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:58:38,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:58:38,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:58:38,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:58:38,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:58:38,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:58:38,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:58:38,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:58:38,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:58:38,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:58:38,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:58:38,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:58:38,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:58:38,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:58:38,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:58:38,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:58:38,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:58:38,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:58:38,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:58:38,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:58:38,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:58:38,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:58:38,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:58:38,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:58:38,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:58:38,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:58:38,862 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 13:58:38,887 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:58:38,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:58:38,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:58:38,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:58:38,891 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:58:38,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:58:38,892 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:58:38,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:58:38,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:58:38,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:58:38,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:58:38,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:58:38,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:58:38,893 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:58:38,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:58:38,894 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:58:38,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:58:38,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:58:38,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:58:38,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:58:38,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:58:38,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:58:38,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:58:38,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:58:38,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:58:38,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:58:38,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:58:38,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:58:38,896 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 13:58:39,170 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:58:39,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:58:39,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:58:39,189 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:58:39,189 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:58:39,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2019-10-07 13:58:39,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda84bb80/bcd0ee436904463d8b9f9484b36648a9/FLAGfd1a56eae [2019-10-07 13:58:39,900 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:58:39,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product31.cil.c [2019-10-07 13:58:39,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda84bb80/bcd0ee436904463d8b9f9484b36648a9/FLAGfd1a56eae [2019-10-07 13:58:40,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda84bb80/bcd0ee436904463d8b9f9484b36648a9 [2019-10-07 13:58:40,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:58:40,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:58:40,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:58:40,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:58:40,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:58:40,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:58:40" (1/1) ... [2019-10-07 13:58:40,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d79651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:40, skipping insertion in model container [2019-10-07 13:58:40,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:58:40" (1/1) ... [2019-10-07 13:58:40,127 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:58:40,212 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:58:40,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:58:40,958 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:58:41,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:58:41,183 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:58:41,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41 WrapperNode [2019-10-07 13:58:41,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:58:41,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:58:41,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:58:41,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:58:41,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (1/1) ... [2019-10-07 13:58:41,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (1/1) ... [2019-10-07 13:58:41,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (1/1) ... [2019-10-07 13:58:41,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (1/1) ... [2019-10-07 13:58:41,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (1/1) ... [2019-10-07 13:58:41,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (1/1) ... [2019-10-07 13:58:41,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (1/1) ... [2019-10-07 13:58:41,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:58:41,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:58:41,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:58:41,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:58:41,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (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 13:58:41,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:58:41,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:58:41,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 13:58:41,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 13:58:41,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 13:58:41,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 13:58:41,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 13:58:41,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 13:58:41,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 13:58:41,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 13:58:41,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:58:41,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:58:41,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 13:58:41,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 13:58:41,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 13:58:41,479 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 13:58:41,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 13:58:41,481 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 13:58:41,481 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 13:58:41,481 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 13:58:41,482 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 13:58:41,482 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 13:58:41,482 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 13:58:41,482 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 13:58:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 13:58:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 13:58:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 13:58:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 13:58:41,483 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 13:58:41,484 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 13:58:41,484 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 13:58:41,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 13:58:41,485 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 13:58:41,485 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 13:58:41,485 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 13:58:41,485 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 13:58:41,486 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 13:58:41,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 13:58:41,486 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 13:58:41,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:58:41,486 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 13:58:41,486 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 13:58:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 13:58:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 13:58:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 13:58:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 13:58:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 13:58:41,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 13:58:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 13:58:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 13:58:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 13:58:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 13:58:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 13:58:41,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 13:58:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 13:58:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 13:58:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 13:58:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 13:58:41,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 13:58:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 13:58:41,490 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 13:58:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 13:58:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 13:58:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 13:58:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 13:58:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 13:58:41,491 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 13:58:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 13:58:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 13:58:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 13:58:41,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 13:58:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 13:58:41,493 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 13:58:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 13:58:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 13:58:41,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 13:58:41,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 13:58:41,495 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 13:58:41,495 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 13:58:41,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:58:41,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:58:41,496 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 13:58:41,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 13:58:41,497 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:58:41,497 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:58:41,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 13:58:41,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:58:41,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:58:41,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:58:41,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:58:41,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 13:58:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:58:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 13:58:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 13:58:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:58:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 13:58:41,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 13:58:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:58:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 13:58:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 13:58:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-07 13:58:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 13:58:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-07 13:58:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 13:58:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 13:58:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 13:58:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 13:58:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 13:58:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 13:58:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 13:58:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 13:58:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 13:58:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 13:58:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 13:58:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:58:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 13:58:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 13:58:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 13:58:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 13:58:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 13:58:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 13:58:41,504 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 13:58:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 13:58:41,505 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 13:58:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 13:58:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 13:58:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 13:58:41,506 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 13:58:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 13:58:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 13:58:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 13:58:41,507 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 13:58:41,508 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 13:58:41,509 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 13:58:41,512 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 13:58:41,512 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 13:58:41,512 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 13:58:41,513 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 13:58:41,513 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 13:58:41,513 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 13:58:41,513 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:58:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 13:58:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 13:58:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 13:58:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 13:58:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 13:58:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 13:58:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 13:58:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 13:58:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 13:58:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 13:58:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 13:58:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 13:58:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 13:58:41,522 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 13:58:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 13:58:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 13:58:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 13:58:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 13:58:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 13:58:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 13:58:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 13:58:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:58:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 13:58:41,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:58:46,820 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:58:46,820 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 13:58:46,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:58:46 BoogieIcfgContainer [2019-10-07 13:58:46,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:58:46,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:58:46,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:58:46,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:58:46,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:58:40" (1/3) ... [2019-10-07 13:58:46,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44681c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:58:46, skipping insertion in model container [2019-10-07 13:58:46,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:58:41" (2/3) ... [2019-10-07 13:58:46,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44681c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:58:46, skipping insertion in model container [2019-10-07 13:58:46,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:58:46" (3/3) ... [2019-10-07 13:58:46,831 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2019-10-07 13:58:46,840 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:58:46,850 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:58:46,862 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:58:46,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:58:46,894 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:58:46,895 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:58:46,895 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:58:46,895 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:58:46,895 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:58:46,895 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:58:46,895 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:58:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states. [2019-10-07 13:58:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-07 13:58:47,035 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:47,037 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:47,039 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:47,045 INFO L82 PathProgramCache]: Analyzing trace with hash -118967536, now seen corresponding path program 1 times [2019-10-07 13:58:47,052 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:47,053 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:47,053 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:47,053 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 13:58:47,733 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:47,734 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:47,734 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 13:58:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:48,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-07 13:58:48,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:58:48,525 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 13:58:48,711 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:58:48,711 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-07 13:58:48,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:58:48,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:58:48,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:58:48,738 INFO L87 Difference]: Start difference. First operand 621 states. Second operand 2 states. [2019-10-07 13:58:48,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:48,876 INFO L93 Difference]: Finished difference Result 992 states and 1498 transitions. [2019-10-07 13:58:48,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:58:48,878 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 133 [2019-10-07 13:58:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:48,928 INFO L225 Difference]: With dead ends: 992 [2019-10-07 13:58:48,929 INFO L226 Difference]: Without dead ends: 504 [2019-10-07 13:58:48,945 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 267 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 13:58:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2019-10-07 13:58:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2019-10-07 13:58:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2019-10-07 13:58:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 745 transitions. [2019-10-07 13:58:49,125 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 745 transitions. Word has length 133 [2019-10-07 13:58:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:49,131 INFO L462 AbstractCegarLoop]: Abstraction has 504 states and 745 transitions. [2019-10-07 13:58:49,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:58:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 745 transitions. [2019-10-07 13:58:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-07 13:58:49,153 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:49,154 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:58:49,366 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:49,366 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:49,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1296682160, now seen corresponding path program 1 times [2019-10-07 13:58:49,367 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:49,368 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:49,369 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:49,369 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 13:58:49,776 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:49,780 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:58:49,780 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:58:49,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:58:49,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:58:49,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:58:49,783 INFO L87 Difference]: Start difference. First operand 504 states and 745 transitions. Second operand 5 states. [2019-10-07 13:58:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:50,773 INFO L93 Difference]: Finished difference Result 1438 states and 2166 transitions. [2019-10-07 13:58:50,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:58:50,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2019-10-07 13:58:50,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:50,788 INFO L225 Difference]: With dead ends: 1438 [2019-10-07 13:58:50,789 INFO L226 Difference]: Without dead ends: 971 [2019-10-07 13:58:50,795 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:58:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2019-10-07 13:58:50,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 963. [2019-10-07 13:58:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2019-10-07 13:58:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1446 transitions. [2019-10-07 13:58:50,886 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1446 transitions. Word has length 133 [2019-10-07 13:58:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:50,889 INFO L462 AbstractCegarLoop]: Abstraction has 963 states and 1446 transitions. [2019-10-07 13:58:50,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:58:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1446 transitions. [2019-10-07 13:58:50,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-07 13:58:50,897 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:50,897 INFO L385 BasicCegarLoop]: trace histogram [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 13:58:50,898 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:50,898 INFO L82 PathProgramCache]: Analyzing trace with hash 237582798, now seen corresponding path program 1 times [2019-10-07 13:58:50,898 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:50,898 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:50,899 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:50,899 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:58:51,120 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:51,120 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:51,120 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 13:58:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:52,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:58:52,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:52,195 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:58:52,377 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:58:52,377 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-07 13:58:52,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:58:52,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:58:52,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:58:52,379 INFO L87 Difference]: Start difference. First operand 963 states and 1446 transitions. Second operand 4 states. [2019-10-07 13:58:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:52,479 INFO L93 Difference]: Finished difference Result 1901 states and 2887 transitions. [2019-10-07 13:58:52,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:58:52,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-07 13:58:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:52,488 INFO L225 Difference]: With dead ends: 1901 [2019-10-07 13:58:52,488 INFO L226 Difference]: Without dead ends: 975 [2019-10-07 13:58:52,496 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:58:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-10-07 13:58:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2019-10-07 13:58:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2019-10-07 13:58:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1458 transitions. [2019-10-07 13:58:52,576 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1458 transitions. Word has length 137 [2019-10-07 13:58:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:52,579 INFO L462 AbstractCegarLoop]: Abstraction has 975 states and 1458 transitions. [2019-10-07 13:58:52,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:58:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1458 transitions. [2019-10-07 13:58:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-07 13:58:52,583 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:52,584 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:58:52,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:52,792 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:52,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1649777829, now seen corresponding path program 1 times [2019-10-07 13:58:52,793 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:52,793 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:52,793 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:52,794 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:58:53,000 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:53,000 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:53,000 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 13:58:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:54,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:58:54,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-07 13:58:54,122 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:58:54,281 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:58:54,282 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-07 13:58:54,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:58:54,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:58:54,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:58:54,284 INFO L87 Difference]: Start difference. First operand 975 states and 1458 transitions. Second operand 5 states. [2019-10-07 13:58:54,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:54,371 INFO L93 Difference]: Finished difference Result 1919 states and 2897 transitions. [2019-10-07 13:58:54,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:58:54,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-10-07 13:58:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:54,382 INFO L225 Difference]: With dead ends: 1919 [2019-10-07 13:58:54,382 INFO L226 Difference]: Without dead ends: 973 [2019-10-07 13:58:54,387 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-07 13:58:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-07 13:58:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 973. [2019-10-07 13:58:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2019-10-07 13:58:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1450 transitions. [2019-10-07 13:58:54,440 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1450 transitions. Word has length 139 [2019-10-07 13:58:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:54,443 INFO L462 AbstractCegarLoop]: Abstraction has 973 states and 1450 transitions. [2019-10-07 13:58:54,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:58:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1450 transitions. [2019-10-07 13:58:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-07 13:58:54,448 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:54,449 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:58:54,657 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:54,657 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:54,658 INFO L82 PathProgramCache]: Analyzing trace with hash -787169402, now seen corresponding path program 1 times [2019-10-07 13:58:54,658 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:54,658 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:54,658 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:54,658 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 13:58:54,826 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:54,826 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:54,827 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 13:58:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:55,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:58:55,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:58:55,620 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:58:55,862 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:58:55,862 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-07 13:58:55,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:58:55,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:58:55,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:58:55,863 INFO L87 Difference]: Start difference. First operand 973 states and 1450 transitions. Second operand 5 states. [2019-10-07 13:58:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:58:57,345 INFO L93 Difference]: Finished difference Result 2353 states and 3570 transitions. [2019-10-07 13:58:57,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:58:57,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2019-10-07 13:58:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:58:57,358 INFO L225 Difference]: With dead ends: 2353 [2019-10-07 13:58:57,359 INFO L226 Difference]: Without dead ends: 1417 [2019-10-07 13:58:57,366 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 272 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-07 13:58:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2019-10-07 13:58:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1397. [2019-10-07 13:58:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2019-10-07 13:58:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2056 transitions. [2019-10-07 13:58:57,439 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2056 transitions. Word has length 140 [2019-10-07 13:58:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:58:57,441 INFO L462 AbstractCegarLoop]: Abstraction has 1397 states and 2056 transitions. [2019-10-07 13:58:57,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:58:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2056 transitions. [2019-10-07 13:58:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 13:58:57,445 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:58:57,445 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:58:57,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:58:57,661 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:58:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:58:57,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1947274654, now seen corresponding path program 1 times [2019-10-07 13:58:57,662 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:58:57,662 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:57,663 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:57,663 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:58:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:58:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:58:57,948 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:58:57,948 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:58:57,948 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 13:58:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:58:58,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 13:58:58,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:58:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-07 13:58:58,795 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:58:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:58:59,272 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:58:59,272 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-07 13:58:59,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:58:59,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:58:59,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-07 13:58:59,274 INFO L87 Difference]: Start difference. First operand 1397 states and 2056 transitions. Second operand 7 states. [2019-10-07 13:59:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:01,018 INFO L93 Difference]: Finished difference Result 3022 states and 4460 transitions. [2019-10-07 13:59:01,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 13:59:01,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-10-07 13:59:01,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:01,033 INFO L225 Difference]: With dead ends: 3022 [2019-10-07 13:59:01,033 INFO L226 Difference]: Without dead ends: 1662 [2019-10-07 13:59:01,041 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 271 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:59:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2019-10-07 13:59:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1643. [2019-10-07 13:59:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2019-10-07 13:59:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2402 transitions. [2019-10-07 13:59:01,128 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2402 transitions. Word has length 141 [2019-10-07 13:59:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:01,128 INFO L462 AbstractCegarLoop]: Abstraction has 1643 states and 2402 transitions. [2019-10-07 13:59:01,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:59:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2402 transitions. [2019-10-07 13:59:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 13:59:01,132 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:01,132 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:01,340 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:01,341 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:01,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:01,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1280114856, now seen corresponding path program 1 times [2019-10-07 13:59:01,342 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:01,342 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:01,342 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:01,343 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:01,518 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:01,519 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:01,519 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 13:59:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:02,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:59:02,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:59:02,293 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:02,471 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:59:02,471 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 8 [2019-10-07 13:59:02,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:02,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:02,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:59:02,473 INFO L87 Difference]: Start difference. First operand 1643 states and 2402 transitions. Second operand 5 states. [2019-10-07 13:59:02,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:02,556 INFO L93 Difference]: Finished difference Result 3268 states and 4835 transitions. [2019-10-07 13:59:02,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:59:02,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-10-07 13:59:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:02,571 INFO L225 Difference]: With dead ends: 3268 [2019-10-07 13:59:02,571 INFO L226 Difference]: Without dead ends: 1675 [2019-10-07 13:59:02,580 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 3 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 13:59:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2019-10-07 13:59:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1655. [2019-10-07 13:59:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2019-10-07 13:59:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2414 transitions. [2019-10-07 13:59:02,647 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2414 transitions. Word has length 141 [2019-10-07 13:59:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:02,647 INFO L462 AbstractCegarLoop]: Abstraction has 1655 states and 2414 transitions. [2019-10-07 13:59:02,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2414 transitions. [2019-10-07 13:59:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-07 13:59:02,652 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:02,652 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:02,860 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:02,864 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash 293521892, now seen corresponding path program 1 times [2019-10-07 13:59:02,865 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:02,865 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:02,865 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:02,866 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:03,106 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:03,106 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:03,106 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 13:59:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:03,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:03,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:59:03,913 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:04,096 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:04,096 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-07 13:59:04,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:59:04,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:59:04,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:59:04,099 INFO L87 Difference]: Start difference. First operand 1655 states and 2414 transitions. Second operand 4 states. [2019-10-07 13:59:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:04,613 INFO L93 Difference]: Finished difference Result 3334 states and 4951 transitions. [2019-10-07 13:59:04,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:59:04,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2019-10-07 13:59:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:04,626 INFO L225 Difference]: With dead ends: 3334 [2019-10-07 13:59:04,626 INFO L226 Difference]: Without dead ends: 1730 [2019-10-07 13:59:04,635 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-07 13:59:04,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2019-10-07 13:59:04,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1712. [2019-10-07 13:59:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1712 states. [2019-10-07 13:59:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2507 transitions. [2019-10-07 13:59:04,704 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2507 transitions. Word has length 143 [2019-10-07 13:59:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:04,705 INFO L462 AbstractCegarLoop]: Abstraction has 1712 states and 2507 transitions. [2019-10-07 13:59:04,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:59:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2507 transitions. [2019-10-07 13:59:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-07 13:59:04,709 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:04,709 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:04,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:04,927 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash -2100094758, now seen corresponding path program 1 times [2019-10-07 13:59:04,927 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:04,927 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:04,928 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:04,928 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:05,104 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:05,104 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:05,104 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 13:59:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:05,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:05,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:59:05,984 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:06,202 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:06,202 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 10 [2019-10-07 13:59:06,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:06,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:06,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:59:06,203 INFO L87 Difference]: Start difference. First operand 1712 states and 2507 transitions. Second operand 5 states. [2019-10-07 13:59:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:07,612 INFO L93 Difference]: Finished difference Result 4000 states and 6073 transitions. [2019-10-07 13:59:07,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:59:07,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-10-07 13:59:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:07,632 INFO L225 Difference]: With dead ends: 4000 [2019-10-07 13:59:07,633 INFO L226 Difference]: Without dead ends: 2805 [2019-10-07 13:59:07,640 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:59:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2019-10-07 13:59:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2740. [2019-10-07 13:59:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2740 states. [2019-10-07 13:59:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 4111 transitions. [2019-10-07 13:59:07,762 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 4111 transitions. Word has length 145 [2019-10-07 13:59:07,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:07,762 INFO L462 AbstractCegarLoop]: Abstraction has 2740 states and 4111 transitions. [2019-10-07 13:59:07,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 4111 transitions. [2019-10-07 13:59:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-07 13:59:07,767 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:07,767 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:07,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:07,984 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:07,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:07,985 INFO L82 PathProgramCache]: Analyzing trace with hash -70432572, now seen corresponding path program 1 times [2019-10-07 13:59:07,985 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:07,985 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:07,985 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:07,985 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:08,137 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:08,138 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:08,138 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 13:59:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:08,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:59:08,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 13:59:08,982 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:09,130 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:09,130 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2019-10-07 13:59:09,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:59:09,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:59:09,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:59:09,132 INFO L87 Difference]: Start difference. First operand 2740 states and 4111 transitions. Second operand 4 states. [2019-10-07 13:59:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:09,249 INFO L93 Difference]: Finished difference Result 5418 states and 8304 transitions. [2019-10-07 13:59:09,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:59:09,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-07 13:59:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:09,269 INFO L225 Difference]: With dead ends: 5418 [2019-10-07 13:59:09,269 INFO L226 Difference]: Without dead ends: 2729 [2019-10-07 13:59:09,283 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:59:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2019-10-07 13:59:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2642. [2019-10-07 13:59:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2642 states. [2019-10-07 13:59:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3929 transitions. [2019-10-07 13:59:09,400 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3929 transitions. Word has length 145 [2019-10-07 13:59:09,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:09,401 INFO L462 AbstractCegarLoop]: Abstraction has 2642 states and 3929 transitions. [2019-10-07 13:59:09,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:59:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3929 transitions. [2019-10-07 13:59:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-07 13:59:09,405 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:09,406 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:09,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:09,616 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:09,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:09,617 INFO L82 PathProgramCache]: Analyzing trace with hash -389456864, now seen corresponding path program 1 times [2019-10-07 13:59:09,617 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:09,617 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:09,617 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:09,617 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-07 13:59:09,802 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:09,803 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:09,803 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 13:59:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:10,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:10,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:59:10,590 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:10,741 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:59:10,742 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 7 [2019-10-07 13:59:10,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:59:10,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:59:10,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:59:10,743 INFO L87 Difference]: Start difference. First operand 2642 states and 3929 transitions. Second operand 4 states. [2019-10-07 13:59:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:10,856 INFO L93 Difference]: Finished difference Result 5333 states and 8145 transitions. [2019-10-07 13:59:10,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:59:10,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-07 13:59:10,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:10,874 INFO L225 Difference]: With dead ends: 5333 [2019-10-07 13:59:10,874 INFO L226 Difference]: Without dead ends: 2742 [2019-10-07 13:59:10,888 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 292 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:59:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2019-10-07 13:59:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2689. [2019-10-07 13:59:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2689 states. [2019-10-07 13:59:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4000 transitions. [2019-10-07 13:59:11,070 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 4000 transitions. Word has length 148 [2019-10-07 13:59:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:11,070 INFO L462 AbstractCegarLoop]: Abstraction has 2689 states and 4000 transitions. [2019-10-07 13:59:11,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:59:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 4000 transitions. [2019-10-07 13:59:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-07 13:59:11,076 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:11,076 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:11,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:11,284 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:11,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1648270878, now seen corresponding path program 1 times [2019-10-07 13:59:11,285 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:11,285 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:11,285 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:11,286 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:59:11,455 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:11,455 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:11,455 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 13:59:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:12,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:12,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:59:12,279 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:12,505 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:12,506 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 11 [2019-10-07 13:59:12,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:12,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:12,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:59:12,507 INFO L87 Difference]: Start difference. First operand 2689 states and 4000 transitions. Second operand 5 states. [2019-10-07 13:59:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:13,882 INFO L93 Difference]: Finished difference Result 5995 states and 9231 transitions. [2019-10-07 13:59:13,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:59:13,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2019-10-07 13:59:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:13,908 INFO L225 Difference]: With dead ends: 5995 [2019-10-07 13:59:13,908 INFO L226 Difference]: Without dead ends: 3873 [2019-10-07 13:59:13,922 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 305 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:59:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2019-10-07 13:59:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3823. [2019-10-07 13:59:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3823 states. [2019-10-07 13:59:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 5823 transitions. [2019-10-07 13:59:14,094 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 5823 transitions. Word has length 154 [2019-10-07 13:59:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:14,095 INFO L462 AbstractCegarLoop]: Abstraction has 3823 states and 5823 transitions. [2019-10-07 13:59:14,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 5823 transitions. [2019-10-07 13:59:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-07 13:59:14,101 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:14,102 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:14,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:14,313 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:14,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:14,314 INFO L82 PathProgramCache]: Analyzing trace with hash 597664632, now seen corresponding path program 1 times [2019-10-07 13:59:14,314 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:14,314 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:14,315 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:14,315 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:59:14,589 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:14,589 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:15,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:59:15,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:59:15,400 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:15,632 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:15,632 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 10 [2019-10-07 13:59:15,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:59:15,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:59:15,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 13:59:15,633 INFO L87 Difference]: Start difference. First operand 3823 states and 5823 transitions. Second operand 5 states. [2019-10-07 13:59:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:17,064 INFO L93 Difference]: Finished difference Result 8270 states and 12967 transitions. [2019-10-07 13:59:17,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:59:17,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2019-10-07 13:59:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:17,097 INFO L225 Difference]: With dead ends: 8270 [2019-10-07 13:59:17,097 INFO L226 Difference]: Without dead ends: 5017 [2019-10-07 13:59:17,113 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 307 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:59:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5017 states. [2019-10-07 13:59:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5017 to 4937. [2019-10-07 13:59:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4937 states. [2019-10-07 13:59:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 7690 transitions. [2019-10-07 13:59:17,325 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 7690 transitions. Word has length 155 [2019-10-07 13:59:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:17,326 INFO L462 AbstractCegarLoop]: Abstraction has 4937 states and 7690 transitions. [2019-10-07 13:59:17,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:59:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 7690 transitions. [2019-10-07 13:59:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-07 13:59:17,332 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:17,332 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:17,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:17,541 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1601641448, now seen corresponding path program 1 times [2019-10-07 13:59:17,542 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:17,542 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:17,542 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:17,542 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 13:59:17,802 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:17,803 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:18,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 13:59:18,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 13:59:18,643 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:18,785 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:59:18,785 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 13:59:18,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 13:59:18,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 13:59:18,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:59:18,786 INFO L87 Difference]: Start difference. First operand 4937 states and 7690 transitions. Second operand 3 states. [2019-10-07 13:59:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:59:19,036 INFO L93 Difference]: Finished difference Result 14036 states and 23785 transitions. [2019-10-07 13:59:19,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 13:59:19,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-10-07 13:59:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:59:19,091 INFO L225 Difference]: With dead ends: 14036 [2019-10-07 13:59:19,091 INFO L226 Difference]: Without dead ends: 9151 [2019-10-07 13:59:19,117 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:59:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9151 states. [2019-10-07 13:59:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9151 to 7744. [2019-10-07 13:59:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7744 states. [2019-10-07 13:59:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 12843 transitions. [2019-10-07 13:59:19,562 INFO L78 Accepts]: Start accepts. Automaton has 7744 states and 12843 transitions. Word has length 156 [2019-10-07 13:59:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:59:19,563 INFO L462 AbstractCegarLoop]: Abstraction has 7744 states and 12843 transitions. [2019-10-07 13:59:19,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 13:59:19,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7744 states and 12843 transitions. [2019-10-07 13:59:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-07 13:59:19,570 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:59:19,571 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:59:19,778 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:19,779 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:59:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:59:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1438165400, now seen corresponding path program 1 times [2019-10-07 13:59:19,779 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:59:19,779 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:19,780 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:19,780 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:59:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:59:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 13:59:19,928 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:59:19,928 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:59:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:59:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:59:21,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:59:21,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:59:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 13:59:21,603 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:59:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 13:59:21,775 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:59:21,810 INFO L162 IcfgInterpreter]: Started Sifa with 125 locations of interest [2019-10-07 13:59:21,810 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:59:21,816 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:59:21,824 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:59:21,825 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:00:06,535 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 756 [2019-10-07 14:00:11,744 WARN L191 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:00:12,112 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:00:12,347 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:00:12,567 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:00:13,141 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:13,712 WARN L191 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:14,187 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:14,689 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:15,707 WARN L191 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 1026 DAG size of output: 1024 [2019-10-07 14:00:16,147 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:16,647 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:17,109 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:17,550 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:18,040 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:00:18,055 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 379 for LOIs [2019-10-07 14:00:18,327 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:00:18,442 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:00:19,000 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 907 [2019-10-07 14:00:19,001 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1068 for LOIs [2019-10-07 14:00:19,420 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:19,861 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:19,973 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:20,709 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:21,159 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:21,585 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:21,768 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:22,524 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:22,991 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:23,416 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:23,546 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:24,285 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:25,097 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 1230 DAG size of output: 1068 [2019-10-07 14:00:25,526 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:25,648 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:26,412 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:26,850 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:27,276 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:27,384 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:28,126 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:28,552 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:28,977 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:29,088 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:29,809 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:30,275 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:30,700 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:30,808 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:31,511 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:31,936 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:32,381 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:32,490 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:33,211 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:33,636 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:34,072 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:34,226 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:34,941 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:35,360 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:35,784 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:35,892 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:36,613 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:37,041 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:37,468 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:37,576 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:38,303 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:38,766 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:39,191 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:39,298 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:40,004 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:40,428 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:40,852 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1068 [2019-10-07 14:00:40,960 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:41,668 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:42,423 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:43,138 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:43,257 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:43,990 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:45,273 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:00:46,009 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:46,127 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:46,838 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:47,551 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:48,254 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:48,363 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:00:49,087 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:00:50,591 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:00:51,307 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:00:51,419 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:00:52,135 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:00:53,715 WARN L191 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:00:54,565 WARN L191 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:00:54,683 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:00:55,417 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:00:56,693 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:00:57,386 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:00:57,495 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:00:58,201 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:00:58,923 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:00:59,630 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:00:59,743 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:00,465 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:01,166 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:01,874 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:01,990 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:02,703 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:01:03,443 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:04,170 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:04,289 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:05,006 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:01:06,266 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:01:06,975 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:07,093 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:07,805 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:01:08,517 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:09,244 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:09,353 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:10,060 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:01:11,465 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:01:12,174 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:12,356 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:13,061 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:14,350 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:01:15,047 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:15,160 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:15,859 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:16,574 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:17,278 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:17,386 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:18,096 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:18,838 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:19,544 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:19,662 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:20,369 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:21,087 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:21,799 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:21,930 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:22,642 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:23,364 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:24,072 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:24,181 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:24,897 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:26,158 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:01:26,865 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:01:26,981 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:27,700 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:28,951 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:01:29,659 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:29,775 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:30,487 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:01:31,781 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:01:32,488 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:32,603 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:33,304 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:34,557 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:01:35,262 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:35,375 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:36,073 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:36,774 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:37,470 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:37,576 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:38,279 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:39,545 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:01:40,263 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:40,377 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:41,086 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:42,349 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:01:43,048 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:43,163 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:43,874 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:45,155 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:01:45,864 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:45,977 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:46,681 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:47,996 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:01:48,695 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:48,809 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:49,520 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:50,230 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:50,935 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:51,042 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:01:51,745 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:01:53,025 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:01:53,729 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:01:53,845 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:54,552 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:55,293 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:56,004 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:56,120 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:56,828 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:01:58,081 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:01:58,783 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:01:58,892 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:01:59,603 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:01,035 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:02:01,738 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:02:01,852 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:02,562 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:03,809 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:02:04,508 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:04,622 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:05,348 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:02:06,619 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:02:07,338 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:07,467 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:08,168 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:09,582 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:02:10,289 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:10,423 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:11,132 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:11,835 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:12,539 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:12,647 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:13,360 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:14,097 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:14,797 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:14,914 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:15,631 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:16,351 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:17,056 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:17,170 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:17,873 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:19,158 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:02:19,862 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:19,974 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:20,685 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:21,946 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:02:22,645 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:22,757 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:23,460 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:24,167 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:24,872 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:24,980 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:25,680 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:26,996 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:02:27,700 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:02:27,812 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:28,523 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:29,244 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:29,969 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:30,083 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:30,798 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:32,079 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:02:32,783 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:02:32,891 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:33,598 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:34,868 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1232 [2019-10-07 14:02:35,577 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:35,691 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:36,407 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:37,694 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:02:38,390 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:38,501 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:39,200 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:40,461 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:02:41,172 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:41,285 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:41,990 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:42,690 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:43,393 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:43,500 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:02:44,204 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:02:44,941 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:45,652 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:45,770 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:46,488 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:47,211 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:47,921 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:48,037 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:48,748 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:49,454 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:50,174 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:50,283 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:50,992 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:52,272 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1232 [2019-10-07 14:02:52,996 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:53,119 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:53,828 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:02:55,044 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1234 [2019-10-07 14:02:55,764 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:02:55,886 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:56,614 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:02:57,850 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1234 [2019-10-07 14:02:58,558 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:02:58,796 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:02:59,573 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:03:00,782 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1234 [2019-10-07 14:03:01,490 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:03:01,619 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:03:02,327 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:03:02,333 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1094 for LOIs [2019-10-07 14:03:02,792 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:03:03,271 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:03:03,390 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:03:04,092 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:03:04,104 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1048 for LOIs [2019-10-07 14:03:04,496 WARN L191 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:03:04,886 WARN L191 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:03:04,995 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:03:05,698 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:03:05,947 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:03:05,948 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.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 14:03:05,954 INFO L168 Benchmark]: Toolchain (without parser) took 265840.85 ms. Allocated memory was 136.3 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 98.4 MB in the beginning and 657.7 MB in the end (delta: -559.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2019-10-07 14:03:05,954 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 14:03:05,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1069.71 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 98.4 MB in the beginning and 139.1 MB in the end (delta: -40.7 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:03:05,955 INFO L168 Benchmark]: Boogie Preprocessor took 204.51 ms. Allocated memory is still 201.3 MB. Free memory was 139.1 MB in the beginning and 129.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-07 14:03:05,956 INFO L168 Benchmark]: RCFGBuilder took 5432.75 ms. Allocated memory was 201.3 MB in the beginning and 309.3 MB in the end (delta: 108.0 MB). Free memory was 129.4 MB in the beginning and 80.1 MB in the end (delta: 49.3 MB). Peak memory consumption was 157.3 MB. Max. memory is 7.1 GB. [2019-10-07 14:03:05,956 INFO L168 Benchmark]: TraceAbstraction took 259128.96 ms. Allocated memory was 309.3 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 80.1 MB in the beginning and 657.7 MB in the end (delta: -577.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2019-10-07 14:03:05,958 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1069.71 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 98.4 MB in the beginning and 139.1 MB in the end (delta: -40.7 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.51 ms. Allocated memory is still 201.3 MB. Free memory was 139.1 MB in the beginning and 129.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5432.75 ms. Allocated memory was 201.3 MB in the beginning and 309.3 MB in the end (delta: 108.0 MB). Free memory was 129.4 MB in the beginning and 80.1 MB in the end (delta: 49.3 MB). Peak memory consumption was 157.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259128.96 ms. Allocated memory was 309.3 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 80.1 MB in the beginning and 657.7 MB in the end (delta: -577.6 MB). Peak memory consumption was 1.9 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...