java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:14:57,792 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:14:57,794 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:14:57,806 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:14:57,806 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:14:57,807 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:14:57,809 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:14:57,812 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:14:57,815 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:14:57,816 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:14:57,822 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:14:57,823 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:14:57,824 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:14:57,825 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:14:57,826 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:14:57,827 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:14:57,828 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:14:57,830 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:14:57,836 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:14:57,838 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:14:57,841 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:14:57,842 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:14:57,844 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:14:57,845 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:14:57,845 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:14:57,846 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:14:57,846 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:14:57,847 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:14:57,848 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:14:57,849 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:14:57,849 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:14:57,850 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 06:14:57,852 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 06:14:57,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:14:57,867 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:14:57,868 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 06:14:57,868 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 06:14:57,868 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 06:14:57,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 06:14:57,869 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 06:14:57,869 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 06:14:57,869 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 06:14:57,869 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 06:14:57,870 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 06:14:57,870 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 06:14:57,870 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 06:14:57,870 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 06:14:57,871 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:14:57,871 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:14:57,871 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:14:57,871 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 06:14:57,872 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 06:14:57,872 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 06:14:57,872 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:14:57,872 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 06:14:57,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:14:57,873 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:14:57,873 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 06:14:57,873 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 06:14:57,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:14:57,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:14:57,874 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 06:14:57,874 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 06:14:57,874 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 06:14:57,874 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 06:14:57,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 06:14:57,874 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 06:14:57,875 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 06:14:57,875 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 06:14:57,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:14:57,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:14:57,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:14:57,953 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:14:57,954 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:14:57,955 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label00_true-unreach-call.c [2018-10-27 06:14:58,012 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2559ee5d3/59c6100dc0fa4aa9961f5f4c937c3709/FLAG743a753a7 [2018-10-27 06:14:58,710 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:14:58,711 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label00_true-unreach-call.c [2018-10-27 06:14:58,731 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2559ee5d3/59c6100dc0fa4aa9961f5f4c937c3709/FLAG743a753a7 [2018-10-27 06:14:58,750 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2559ee5d3/59c6100dc0fa4aa9961f5f4c937c3709 [2018-10-27 06:14:58,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:14:58,764 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 06:14:58,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:14:58,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:14:58,770 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:14:58,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:14:58" (1/1) ... [2018-10-27 06:14:58,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:58, skipping insertion in model container [2018-10-27 06:14:58,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:14:58" (1/1) ... [2018-10-27 06:14:58,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:14:58,883 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:14:59,621 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:14:59,628 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:14:59,840 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:14:59,864 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:14:59,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59 WrapperNode [2018-10-27 06:14:59,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:14:59,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:14:59,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:14:59,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:14:59,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:14:59,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:15:00,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:15:00,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:15:00,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:15:00,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:15:00,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:15:00,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:15:00,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:15:00,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:15:00,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:15:00,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:15:00,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... [2018-10-27 06:15:00,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:15:00,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:15:00,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:15:00,315 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:15:00,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 06:15:00,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 06:15:00,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 06:15:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 06:15:00,385 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 06:15:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:15:00,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:15:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 06:15:00,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 06:15:05,016 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:15:05,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:15:05 BoogieIcfgContainer [2018-10-27 06:15:05,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:15:05,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 06:15:05,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 06:15:05,022 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 06:15:05,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:14:58" (1/3) ... [2018-10-27 06:15:05,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437b3318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:15:05, skipping insertion in model container [2018-10-27 06:15:05,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:14:59" (2/3) ... [2018-10-27 06:15:05,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437b3318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:15:05, skipping insertion in model container [2018-10-27 06:15:05,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:15:05" (3/3) ... [2018-10-27 06:15:05,026 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label00_true-unreach-call.c [2018-10-27 06:15:05,035 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 06:15:05,044 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 06:15:05,062 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 06:15:05,102 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 06:15:05,103 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 06:15:05,103 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 06:15:05,103 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:15:05,103 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:15:05,103 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 06:15:05,104 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:15:05,104 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 06:15:05,134 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 06:15:05,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-27 06:15:05,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:05,157 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:15:05,160 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:05,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:05,167 INFO L82 PathProgramCache]: Analyzing trace with hash 612696124, now seen corresponding path program 1 times [2018-10-27 06:15:05,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:05,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:05,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:05,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:05,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:06,051 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-10-27 06:15:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:15:06,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:15:06,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 06:15:06,395 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:06,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 06:15:06,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:15:06,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:15:06,425 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 06:15:10,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:15:10,138 INFO L93 Difference]: Finished difference Result 1085 states and 1949 transitions. [2018-10-27 06:15:10,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 06:15:10,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2018-10-27 06:15:10,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:15:10,169 INFO L225 Difference]: With dead ends: 1085 [2018-10-27 06:15:10,169 INFO L226 Difference]: Without dead ends: 767 [2018-10-27 06:15:10,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:15:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-10-27 06:15:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 523. [2018-10-27 06:15:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2018-10-27 06:15:10,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 922 transitions. [2018-10-27 06:15:10,268 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 922 transitions. Word has length 199 [2018-10-27 06:15:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:15:10,269 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 922 transitions. [2018-10-27 06:15:10,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 06:15:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 922 transitions. [2018-10-27 06:15:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-27 06:15:10,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:10,279 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:15:10,279 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:10,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1141200915, now seen corresponding path program 1 times [2018-10-27 06:15:10,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:10,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:10,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:10,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:10,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:10,579 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:15:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:15:10,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:15:10,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 06:15:10,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:10,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 06:15:10,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:15:10,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 06:15:10,799 INFO L87 Difference]: Start difference. First operand 523 states and 922 transitions. Second operand 5 states. [2018-10-27 06:15:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:15:14,613 INFO L93 Difference]: Finished difference Result 1613 states and 2944 transitions. [2018-10-27 06:15:14,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 06:15:14,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-10-27 06:15:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:15:14,636 INFO L225 Difference]: With dead ends: 1613 [2018-10-27 06:15:14,636 INFO L226 Difference]: Without dead ends: 1096 [2018-10-27 06:15:14,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 06:15:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-10-27 06:15:14,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-10-27 06:15:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-10-27 06:15:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1774 transitions. [2018-10-27 06:15:14,743 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1774 transitions. Word has length 210 [2018-10-27 06:15:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:15:14,744 INFO L481 AbstractCegarLoop]: Abstraction has 1073 states and 1774 transitions. [2018-10-27 06:15:14,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 06:15:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1774 transitions. [2018-10-27 06:15:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-27 06:15:14,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:14,751 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:15:14,751 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:14,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2110773816, now seen corresponding path program 1 times [2018-10-27 06:15:14,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:14,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:14,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:14,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:14,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:15:15,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:15:15,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:15:15,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:15,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:15:15,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:15:15,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:15:15,087 INFO L87 Difference]: Start difference. First operand 1073 states and 1774 transitions. Second operand 3 states. [2018-10-27 06:15:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:15:16,670 INFO L93 Difference]: Finished difference Result 3069 states and 5224 transitions. [2018-10-27 06:15:16,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:15:16,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2018-10-27 06:15:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:15:16,698 INFO L225 Difference]: With dead ends: 3069 [2018-10-27 06:15:16,698 INFO L226 Difference]: Without dead ends: 2002 [2018-10-27 06:15:16,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:15:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2018-10-27 06:15:16,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1984. [2018-10-27 06:15:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1984 states. [2018-10-27 06:15:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 3215 transitions. [2018-10-27 06:15:16,797 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 3215 transitions. Word has length 212 [2018-10-27 06:15:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:15:16,798 INFO L481 AbstractCegarLoop]: Abstraction has 1984 states and 3215 transitions. [2018-10-27 06:15:16,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:15:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 3215 transitions. [2018-10-27 06:15:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-27 06:15:16,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:16,811 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:15:16,811 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:16,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:16,812 INFO L82 PathProgramCache]: Analyzing trace with hash -639515856, now seen corresponding path program 1 times [2018-10-27 06:15:16,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:16,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:16,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:16,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:16,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:17,118 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 06:15:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 06:15:17,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:15:17,222 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:15:17,223 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-27 06:15:17,226 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [151], [156], [158], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:15:17,297 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:15:17,298 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:15:18,472 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:15:18,474 INFO L272 AbstractInterpreter]: Visited 200 different actions 200 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 06:15:18,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:18,521 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:15:19,719 INFO L227 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 73.88% of their original sizes. [2018-10-27 06:15:19,719 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:15:20,312 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-10-27 06:15:20,313 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:15:20,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:15:20,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-27 06:15:20,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:20,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 06:15:20,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 06:15:20,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2018-10-27 06:15:20,316 INFO L87 Difference]: Start difference. First operand 1984 states and 3215 transitions. Second operand 17 states. [2018-10-27 06:15:40,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:15:41,000 INFO L93 Difference]: Finished difference Result 4172 states and 6760 transitions. [2018-10-27 06:15:41,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:15:41,000 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 253 [2018-10-27 06:15:41,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:15:41,013 INFO L225 Difference]: With dead ends: 4172 [2018-10-27 06:15:41,013 INFO L226 Difference]: Without dead ends: 2194 [2018-10-27 06:15:41,020 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 253 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-10-27 06:15:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2018-10-27 06:15:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2192. [2018-10-27 06:15:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2192 states. [2018-10-27 06:15:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 3433 transitions. [2018-10-27 06:15:41,082 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 3433 transitions. Word has length 253 [2018-10-27 06:15:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:15:41,083 INFO L481 AbstractCegarLoop]: Abstraction has 2192 states and 3433 transitions. [2018-10-27 06:15:41,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 06:15:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 3433 transitions. [2018-10-27 06:15:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-27 06:15:41,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:15:41,094 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:15:41,095 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:15:41,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:41,095 INFO L82 PathProgramCache]: Analyzing trace with hash 58259469, now seen corresponding path program 1 times [2018-10-27 06:15:41,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:15:41,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:41,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:15:41,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:15:41,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:15:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:15:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 06:15:41,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:15:41,416 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:15:41,416 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-10-27 06:15:41,417 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [151], [156], [158], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:15:41,430 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:15:41,431 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:15:42,314 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:15:42,314 INFO L272 AbstractInterpreter]: Visited 204 different actions 402 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:15:42,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:15:42,321 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:15:43,373 INFO L227 lantSequenceWeakener]: Weakened 260 states. On average, predicates are now at 74.2% of their original sizes. [2018-10-27 06:15:43,373 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:15:43,970 INFO L415 sIntCurrentIteration]: We unified 264 AI predicates to 264 [2018-10-27 06:15:43,970 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:15:43,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:15:43,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [9] total 29 [2018-10-27 06:15:43,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:15:43,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 06:15:43,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 06:15:43,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2018-10-27 06:15:43,972 INFO L87 Difference]: Start difference. First operand 2192 states and 3433 transitions. Second operand 22 states. [2018-10-27 06:16:18,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:18,171 INFO L93 Difference]: Finished difference Result 4384 states and 6983 transitions. [2018-10-27 06:16:18,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 06:16:18,171 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 265 [2018-10-27 06:16:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:18,184 INFO L225 Difference]: With dead ends: 4384 [2018-10-27 06:16:18,185 INFO L226 Difference]: Without dead ends: 2406 [2018-10-27 06:16:18,191 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 273 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2018-10-27 06:16:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2018-10-27 06:16:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2403. [2018-10-27 06:16:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2403 states. [2018-10-27 06:16:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3660 transitions. [2018-10-27 06:16:18,253 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3660 transitions. Word has length 265 [2018-10-27 06:16:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:18,254 INFO L481 AbstractCegarLoop]: Abstraction has 2403 states and 3660 transitions. [2018-10-27 06:16:18,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-27 06:16:18,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3660 transitions. [2018-10-27 06:16:18,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-27 06:16:18,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:18,265 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:16:18,265 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:18,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash -204377464, now seen corresponding path program 1 times [2018-10-27 06:16:18,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:18,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:18,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:18,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:18,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:16:18,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:18,842 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:18,842 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-10-27 06:16:18,849 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [151], [156], [158], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:18,858 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:18,858 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:16:19,727 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:16:19,728 INFO L272 AbstractInterpreter]: Visited 204 different actions 400 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:16:19,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:19,734 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:16:19,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:19,734 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:16:19,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:19,745 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:16:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:19,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:16:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:16:20,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:16:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:16:20,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:16:20,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-27 06:16:20,513 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:16:20,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:16:20,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:16:20,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:16:20,515 INFO L87 Difference]: Start difference. First operand 2403 states and 3660 transitions. Second operand 6 states. [2018-10-27 06:16:24,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:24,515 INFO L93 Difference]: Finished difference Result 7898 states and 13728 transitions. [2018-10-27 06:16:24,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 06:16:24,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 265 [2018-10-27 06:16:24,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:24,552 INFO L225 Difference]: With dead ends: 7898 [2018-10-27 06:16:24,553 INFO L226 Difference]: Without dead ends: 5920 [2018-10-27 06:16:24,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 531 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:16:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5920 states. [2018-10-27 06:16:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5920 to 5828. [2018-10-27 06:16:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5828 states. [2018-10-27 06:16:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8932 transitions. [2018-10-27 06:16:24,765 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8932 transitions. Word has length 265 [2018-10-27 06:16:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:24,765 INFO L481 AbstractCegarLoop]: Abstraction has 5828 states and 8932 transitions. [2018-10-27 06:16:24,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:16:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8932 transitions. [2018-10-27 06:16:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-27 06:16:24,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:24,793 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:16:24,794 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:24,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:24,794 INFO L82 PathProgramCache]: Analyzing trace with hash -709948619, now seen corresponding path program 1 times [2018-10-27 06:16:24,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:24,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:24,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:24,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:24,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 76 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:16:25,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:25,150 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:25,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-10-27 06:16:25,151 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [151], [156], [158], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:25,161 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:25,161 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:16:26,491 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:16:26,492 INFO L272 AbstractInterpreter]: Visited 206 different actions 403 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:16:26,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:26,527 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:16:26,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:26,527 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:16:26,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:26,544 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:16:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:26,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:16:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-27 06:16:26,941 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:16:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-27 06:16:27,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:16:27,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 7 [2018-10-27 06:16:27,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:16:27,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:16:27,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:16:27,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:16:27,443 INFO L87 Difference]: Start difference. First operand 5828 states and 8932 transitions. Second operand 3 states. [2018-10-27 06:16:28,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:28,303 INFO L93 Difference]: Finished difference Result 9919 states and 15409 transitions. [2018-10-27 06:16:28,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:16:28,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 276 [2018-10-27 06:16:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:28,335 INFO L225 Difference]: With dead ends: 9919 [2018-10-27 06:16:28,335 INFO L226 Difference]: Without dead ends: 5826 [2018-10-27 06:16:28,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:16:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2018-10-27 06:16:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 5826. [2018-10-27 06:16:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5826 states. [2018-10-27 06:16:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 8928 transitions. [2018-10-27 06:16:28,506 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 8928 transitions. Word has length 276 [2018-10-27 06:16:28,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:28,507 INFO L481 AbstractCegarLoop]: Abstraction has 5826 states and 8928 transitions. [2018-10-27 06:16:28,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:16:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 8928 transitions. [2018-10-27 06:16:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-27 06:16:28,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:28,533 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:16:28,533 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:28,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:28,534 INFO L82 PathProgramCache]: Analyzing trace with hash 474330620, now seen corresponding path program 1 times [2018-10-27 06:16:28,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:28,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:28,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:28,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:28,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:16:29,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:29,083 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:29,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-10-27 06:16:29,084 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [252], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:29,090 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:29,090 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:16:30,227 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:16:30,227 INFO L272 AbstractInterpreter]: Visited 204 different actions 400 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:16:30,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:30,251 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:16:30,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:30,251 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:16:30,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:30,260 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:16:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:30,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:16:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:16:30,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:16:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:16:31,749 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:16:31,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-10-27 06:16:31,750 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:16:31,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 06:16:31,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:16:31,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:16:31,751 INFO L87 Difference]: Start difference. First operand 5826 states and 8928 transitions. Second operand 5 states. [2018-10-27 06:16:32,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:32,763 INFO L93 Difference]: Finished difference Result 14165 states and 23371 transitions. [2018-10-27 06:16:32,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:16:32,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2018-10-27 06:16:32,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:32,957 INFO L225 Difference]: With dead ends: 14165 [2018-10-27 06:16:32,958 INFO L226 Difference]: Without dead ends: 10076 [2018-10-27 06:16:32,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 558 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-27 06:16:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10076 states. [2018-10-27 06:16:33,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10076 to 9932. [2018-10-27 06:16:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9932 states. [2018-10-27 06:16:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 15641 transitions. [2018-10-27 06:16:33,295 INFO L78 Accepts]: Start accepts. Automaton has 9932 states and 15641 transitions. Word has length 283 [2018-10-27 06:16:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:33,295 INFO L481 AbstractCegarLoop]: Abstraction has 9932 states and 15641 transitions. [2018-10-27 06:16:33,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 06:16:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9932 states and 15641 transitions. [2018-10-27 06:16:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-27 06:16:33,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:33,346 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:16:33,346 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:33,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:33,347 INFO L82 PathProgramCache]: Analyzing trace with hash -953111912, now seen corresponding path program 1 times [2018-10-27 06:16:33,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:33,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:33,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:33,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:33,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 103 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:16:33,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:33,918 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:33,918 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-10-27 06:16:33,918 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [151], [156], [158], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:33,923 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:33,924 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:16:34,831 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:16:34,832 INFO L272 AbstractInterpreter]: Visited 205 different actions 402 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:16:34,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:34,836 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:16:34,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:34,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:16:34,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:34,846 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:16:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:35,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:16:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:16:35,302 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:16:35,459 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 06:16:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:16:35,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:16:35,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-10-27 06:16:35,766 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:16:35,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:16:35,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:16:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-27 06:16:35,767 INFO L87 Difference]: Start difference. First operand 9932 states and 15641 transitions. Second operand 9 states. [2018-10-27 06:16:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:40,855 INFO L93 Difference]: Finished difference Result 32102 states and 55361 transitions. [2018-10-27 06:16:40,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 06:16:40,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 290 [2018-10-27 06:16:40,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:40,961 INFO L225 Difference]: With dead ends: 32102 [2018-10-27 06:16:40,961 INFO L226 Difference]: Without dead ends: 22595 [2018-10-27 06:16:41,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-10-27 06:16:41,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22595 states. [2018-10-27 06:16:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22595 to 20888. [2018-10-27 06:16:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20888 states. [2018-10-27 06:16:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20888 states to 20888 states and 30859 transitions. [2018-10-27 06:16:41,659 INFO L78 Accepts]: Start accepts. Automaton has 20888 states and 30859 transitions. Word has length 290 [2018-10-27 06:16:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:41,659 INFO L481 AbstractCegarLoop]: Abstraction has 20888 states and 30859 transitions. [2018-10-27 06:16:41,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:16:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 20888 states and 30859 transitions. [2018-10-27 06:16:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-27 06:16:41,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:41,712 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:16:41,712 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:41,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:41,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1920320105, now seen corresponding path program 1 times [2018-10-27 06:16:41,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:41,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:41,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:41,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:41,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:16:42,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:42,307 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:42,308 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 309 with the following transitions: [2018-10-27 06:16:42,308 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [366], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:42,313 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:42,314 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:16:43,748 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:16:43,749 INFO L272 AbstractInterpreter]: Visited 204 different actions 606 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 06:16:43,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:43,787 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:16:43,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:43,787 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:16:43,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:43,797 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:16:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:43,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:16:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:16:44,159 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:16:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:16:44,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:16:44,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 06:16:44,306 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:16:44,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:16:44,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:16:44,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:16:44,307 INFO L87 Difference]: Start difference. First operand 20888 states and 30859 transitions. Second operand 9 states. [2018-10-27 06:16:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:16:52,248 INFO L93 Difference]: Finished difference Result 59273 states and 102453 transitions. [2018-10-27 06:16:52,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-27 06:16:52,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 308 [2018-10-27 06:16:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:16:52,479 INFO L225 Difference]: With dead ends: 59273 [2018-10-27 06:16:52,479 INFO L226 Difference]: Without dead ends: 38817 [2018-10-27 06:16:52,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 635 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=453, Invalid=1803, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 06:16:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38817 states. [2018-10-27 06:16:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38817 to 34710. [2018-10-27 06:16:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34710 states. [2018-10-27 06:16:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34710 states to 34710 states and 46565 transitions. [2018-10-27 06:16:54,051 INFO L78 Accepts]: Start accepts. Automaton has 34710 states and 46565 transitions. Word has length 308 [2018-10-27 06:16:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:16:54,051 INFO L481 AbstractCegarLoop]: Abstraction has 34710 states and 46565 transitions. [2018-10-27 06:16:54,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:16:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 34710 states and 46565 transitions. [2018-10-27 06:16:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-27 06:16:54,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:16:54,112 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:16:54,112 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:16:54,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:54,113 INFO L82 PathProgramCache]: Analyzing trace with hash 586426594, now seen corresponding path program 1 times [2018-10-27 06:16:54,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:16:54,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:54,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:54,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:16:54,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:16:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 181 proven. 8 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-27 06:16:54,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:54,584 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:16:54,584 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 366 with the following transitions: [2018-10-27 06:16:54,585 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [366], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:16:54,591 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:16:54,592 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:16:56,437 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:16:56,438 INFO L272 AbstractInterpreter]: Visited 208 different actions 829 times. Merged at 8 different actions 33 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:16:56,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:16:56,445 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:16:56,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:16:56,445 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:16:56,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:16:56,454 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:16:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:16:56,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:16:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-27 06:16:56,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:16:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 181 proven. 8 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-27 06:16:57,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:16:57,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-27 06:16:57,158 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:16:57,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 06:16:57,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 06:16:57,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:16:57,160 INFO L87 Difference]: Start difference. First operand 34710 states and 46565 transitions. Second operand 8 states. [2018-10-27 06:17:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:17:04,246 INFO L93 Difference]: Finished difference Result 118292 states and 180857 transitions. [2018-10-27 06:17:04,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-27 06:17:04,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 365 [2018-10-27 06:17:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:17:04,759 INFO L225 Difference]: With dead ends: 118292 [2018-10-27 06:17:04,759 INFO L226 Difference]: Without dead ends: 89967 [2018-10-27 06:17:04,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 750 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2018-10-27 06:17:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89967 states. [2018-10-27 06:17:07,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89967 to 87633. [2018-10-27 06:17:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87633 states. [2018-10-27 06:17:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87633 states to 87633 states and 113552 transitions. [2018-10-27 06:17:07,538 INFO L78 Accepts]: Start accepts. Automaton has 87633 states and 113552 transitions. Word has length 365 [2018-10-27 06:17:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:17:07,538 INFO L481 AbstractCegarLoop]: Abstraction has 87633 states and 113552 transitions. [2018-10-27 06:17:07,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 06:17:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 87633 states and 113552 transitions. [2018-10-27 06:17:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-27 06:17:07,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:17:07,705 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:17:07,706 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:17:07,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:17:07,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1361900701, now seen corresponding path program 1 times [2018-10-27 06:17:07,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:17:07,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:17:07,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:17:07,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:17:07,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:17:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:17:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 06:17:08,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:17:08,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:17:08,359 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-10-27 06:17:08,359 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [366], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:17:08,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:17:08,365 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:17:09,693 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:17:09,694 INFO L272 AbstractInterpreter]: Visited 204 different actions 402 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:17:09,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:17:09,703 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:17:10,737 INFO L227 lantSequenceWeakener]: Weakened 393 states. On average, predicates are now at 73.89% of their original sizes. [2018-10-27 06:17:10,737 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:17:11,110 INFO L415 sIntCurrentIteration]: We unified 397 AI predicates to 397 [2018-10-27 06:17:11,110 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:17:11,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:17:11,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [5] total 25 [2018-10-27 06:17:11,111 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:17:11,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 06:17:11,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 06:17:11,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-10-27 06:17:11,112 INFO L87 Difference]: Start difference. First operand 87633 states and 113552 transitions. Second operand 22 states. [2018-10-27 06:17:38,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:17:38,877 INFO L93 Difference]: Finished difference Result 177737 states and 232188 transitions. [2018-10-27 06:17:38,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 06:17:38,877 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 398 [2018-10-27 06:17:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:17:39,254 INFO L225 Difference]: With dead ends: 177737 [2018-10-27 06:17:39,254 INFO L226 Difference]: Without dead ends: 101314 [2018-10-27 06:17:39,423 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 405 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2018-10-27 06:17:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101314 states. [2018-10-27 06:17:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101314 to 101217. [2018-10-27 06:17:41,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101217 states. [2018-10-27 06:17:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101217 states to 101217 states and 129081 transitions. [2018-10-27 06:17:41,631 INFO L78 Accepts]: Start accepts. Automaton has 101217 states and 129081 transitions. Word has length 398 [2018-10-27 06:17:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:17:41,632 INFO L481 AbstractCegarLoop]: Abstraction has 101217 states and 129081 transitions. [2018-10-27 06:17:41,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-27 06:17:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 101217 states and 129081 transitions. [2018-10-27 06:17:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-27 06:17:42,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:17:42,592 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:17:42,592 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:17:42,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:17:42,593 INFO L82 PathProgramCache]: Analyzing trace with hash -596943834, now seen corresponding path program 1 times [2018-10-27 06:17:42,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:17:42,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:17:42,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:17:42,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:17:42,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:17:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:17:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 208 proven. 108 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:17:43,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:17:43,544 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:17:43,544 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 411 with the following transitions: [2018-10-27 06:17:43,545 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [366], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:17:43,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:17:43,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:17:45,694 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:17:45,695 INFO L272 AbstractInterpreter]: Visited 208 different actions 1035 times. Merged at 9 different actions 47 times. Widened at 1 different actions 1 times. Found 12 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:17:45,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:17:45,702 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:17:45,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:17:45,702 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:17:45,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:17:45,710 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:17:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:17:45,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:17:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-27 06:17:46,127 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:17:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 217 proven. 92 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-27 06:17:46,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:17:46,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 06:17:46,389 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:17:46,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 06:17:46,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 06:17:46,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-10-27 06:17:46,391 INFO L87 Difference]: Start difference. First operand 101217 states and 129081 transitions. Second operand 12 states. [2018-10-27 06:18:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:01,475 INFO L93 Difference]: Finished difference Result 355394 states and 496426 transitions. [2018-10-27 06:18:01,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-27 06:18:01,475 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 410 [2018-10-27 06:18:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:02,801 INFO L225 Difference]: With dead ends: 355394 [2018-10-27 06:18:02,801 INFO L226 Difference]: Without dead ends: 254601 [2018-10-27 06:18:03,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 851 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=497, Invalid=1855, Unknown=0, NotChecked=0, Total=2352 [2018-10-27 06:18:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254601 states. [2018-10-27 06:18:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254601 to 239327. [2018-10-27 06:18:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239327 states. [2018-10-27 06:18:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239327 states to 239327 states and 318362 transitions. [2018-10-27 06:18:15,271 INFO L78 Accepts]: Start accepts. Automaton has 239327 states and 318362 transitions. Word has length 410 [2018-10-27 06:18:15,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:18:15,271 INFO L481 AbstractCegarLoop]: Abstraction has 239327 states and 318362 transitions. [2018-10-27 06:18:15,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 06:18:15,271 INFO L276 IsEmpty]: Start isEmpty. Operand 239327 states and 318362 transitions. [2018-10-27 06:18:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-10-27 06:18:15,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:18:15,865 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:18:15,865 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:18:15,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:15,865 INFO L82 PathProgramCache]: Analyzing trace with hash -203262470, now seen corresponding path program 1 times [2018-10-27 06:18:15,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:18:15,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:15,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:15,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:18:15,867 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:18:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 249 proven. 94 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-27 06:18:16,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:18:16,466 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:18:16,467 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 438 with the following transitions: [2018-10-27 06:18:16,467 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [366], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [543], [548], [550], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1053], [1055], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:18:16,472 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:18:16,473 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:18:17,915 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:18:17,915 INFO L272 AbstractInterpreter]: Visited 210 different actions 831 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:18:17,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:18:17,924 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:18:17,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:18:17,924 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:18:17,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:18:17,933 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:18:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:18:18,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:18:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 06:18:18,828 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:18:19,035 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 06:18:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 238 proven. 93 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-27 06:18:20,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:18:20,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-10-27 06:18:20,076 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:18:20,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 06:18:20,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:18:20,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:18:20,078 INFO L87 Difference]: Start difference. First operand 239327 states and 318362 transitions. Second operand 5 states. [2018-10-27 06:18:29,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:18:29,454 INFO L93 Difference]: Finished difference Result 608633 states and 809145 transitions. [2018-10-27 06:18:29,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:18:29,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 437 [2018-10-27 06:18:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:18:30,980 INFO L225 Difference]: With dead ends: 608633 [2018-10-27 06:18:30,980 INFO L226 Difference]: Without dead ends: 369951 Received shutdown request... [2018-10-27 06:18:31,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 866 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:18:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369951 states. [2018-10-27 06:18:31,758 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 06:18:31,762 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 06:18:31,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:18:31 BoogieIcfgContainer [2018-10-27 06:18:31,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 06:18:31,763 INFO L168 Benchmark]: Toolchain (without parser) took 212999.89 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -318.2 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-10-27 06:18:31,764 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 06:18:31,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1099.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:18:31,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 291.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -867.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 06:18:31,766 INFO L168 Benchmark]: Boogie Preprocessor took 156.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-27 06:18:31,767 INFO L168 Benchmark]: RCFGBuilder took 4702.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.3 MB). Peak memory consumption was 262.3 MB. Max. memory is 7.1 GB. [2018-10-27 06:18:31,768 INFO L168 Benchmark]: TraceAbstraction took 206743.93 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 188.9 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-27 06:18:31,782 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1099.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 291.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -867.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4702.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.3 MB). Peak memory consumption was 262.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206743.93 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 188.9 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1611]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1611). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 206.6s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 148.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3386 SDtfs, 23071 SDslu, 5977 SDs, 0 SdLazy, 34981 SolverSat, 5834 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 6461 GetRequests, 6189 SyntacticMatches, 16 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1997 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239327occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.8s AbstIntTime, 11 AbstIntIterations, 3 AbstIntStrong, 0.9991924886865464 AbsIntWeakeningRatio, 0.2343921139101862 AbsIntAvgWeakeningVarsNumRemoved, 58.37677984665937 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 20.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 24045 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 6805 NumberOfCodeBlocks, 6805 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 9409 ConstructedInterpolants, 0 QuantifiedInterpolants, 5820209 SizeOfPredicates, 8 NumberOfNonLiveVariables, 10453 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 30 InterpolantComputations, 7 PerfectInterpolantSequences, 4515/5006 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown