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_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:18:52,705 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:18:52,707 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:18:52,722 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:18:52,723 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:18:52,724 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:18:52,725 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:18:52,726 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:18:52,728 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:18:52,729 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:18:52,730 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:18:52,730 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:18:52,731 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:18:52,732 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:18:52,733 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:18:52,734 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:18:52,735 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:18:52,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:18:52,742 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:18:52,743 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:18:52,746 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:18:52,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:18:52,754 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:18:52,755 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:18:52,755 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:18:52,758 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:18:52,759 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:18:52,760 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:18:52,760 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:18:52,761 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:18:52,762 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:18:52,762 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 06:18:52,768 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 06:18:52,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:18:52,798 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:18:52,799 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 06:18:52,799 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 06:18:52,799 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 06:18:52,799 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 06:18:52,800 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 06:18:52,800 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 06:18:52,800 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 06:18:52,800 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 06:18:52,800 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 06:18:52,801 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 06:18:52,801 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 06:18:52,801 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 06:18:52,802 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:18:52,803 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:18:52,803 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:18:52,803 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 06:18:52,803 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 06:18:52,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 06:18:52,804 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:18:52,804 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 06:18:52,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:18:52,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:18:52,805 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 06:18:52,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 06:18:52,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:18:52,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:18:52,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 06:18:52,806 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 06:18:52,808 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 06:18:52,808 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 06:18:52,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 06:18:52,808 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 06:18:52,809 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 06:18:52,809 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 06:18:52,866 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:18:52,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:18:52,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:18:52,886 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:18:52,886 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:18:52,887 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22_true-unreach-call.c [2018-10-27 06:18:52,955 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9a415491/c73ce379ee0c4fefbca4f72071cb701a/FLAG7fdf4e98a [2018-10-27 06:18:53,654 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:18:53,655 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label22_true-unreach-call.c [2018-10-27 06:18:53,677 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9a415491/c73ce379ee0c4fefbca4f72071cb701a/FLAG7fdf4e98a [2018-10-27 06:18:53,697 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d9a415491/c73ce379ee0c4fefbca4f72071cb701a [2018-10-27 06:18:53,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:18:53,711 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 06:18:53,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:18:53,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:18:53,718 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:18:53,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:18:53" (1/1) ... [2018-10-27 06:18:53,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed858fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:53, skipping insertion in model container [2018-10-27 06:18:53,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:18:53" (1/1) ... [2018-10-27 06:18:53,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:18:53,838 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:18:54,626 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:18:54,634 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:18:54,897 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:18:54,920 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:18:54,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54 WrapperNode [2018-10-27 06:18:54,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:18:54,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:18:54,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:18:54,922 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:18:54,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:54,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:55,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:18:55,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:18:55,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:18:55,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:18:55,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:55,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:55,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:55,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:55,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:55,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:55,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (1/1) ... [2018-10-27 06:18:55,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:18:55,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:18:55,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:18:55,424 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:18:55,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (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 06:18:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 06:18:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 06:18:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 06:18:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 06:18:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:18:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:18:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 06:18:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 06:19:00,393 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:19:00,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:19:00 BoogieIcfgContainer [2018-10-27 06:19:00,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:19:00,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 06:19:00,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 06:19:00,399 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 06:19:00,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:18:53" (1/3) ... [2018-10-27 06:19:00,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4fbea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:19:00, skipping insertion in model container [2018-10-27 06:19:00,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:18:54" (2/3) ... [2018-10-27 06:19:00,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4fbea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:19:00, skipping insertion in model container [2018-10-27 06:19:00,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:19:00" (3/3) ... [2018-10-27 06:19:00,403 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label22_true-unreach-call.c [2018-10-27 06:19:00,413 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 06:19:00,423 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 06:19:00,441 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 06:19:00,488 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 06:19:00,488 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 06:19:00,489 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 06:19:00,489 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:19:00,489 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:19:00,489 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 06:19:00,489 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:19:00,489 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 06:19:00,519 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 06:19:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 06:19:00,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:00,545 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] [2018-10-27 06:19:00,548 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:00,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1705983263, now seen corresponding path program 1 times [2018-10-27 06:19:00,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:00,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:00,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:00,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:00,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:01,476 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:19:01,602 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 06:19:01,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:19:01,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:19:01,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:01,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:19:01,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:19:01,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:19:01,630 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-27 06:19:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:03,880 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-27 06:19:03,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:19:03,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2018-10-27 06:19:03,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:03,909 INFO L225 Difference]: With dead ends: 838 [2018-10-27 06:19:03,910 INFO L226 Difference]: Without dead ends: 524 [2018-10-27 06:19:03,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:19:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-27 06:19:04,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-27 06:19:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-27 06:19:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-27 06:19:04,010 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 174 [2018-10-27 06:19:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:04,011 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-27 06:19:04,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:19:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-27 06:19:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-27 06:19:04,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:04,020 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:04,021 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:04,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash 458519048, now seen corresponding path program 1 times [2018-10-27 06:19:04,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:04,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:04,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:04,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:04,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:04,406 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 06:19:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:19:04,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:19:04,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 06:19:04,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:04,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:19:04,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:19:04,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:19:04,487 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-27 06:19:08,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:08,852 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-27 06:19:08,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 06:19:08,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2018-10-27 06:19:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:08,866 INFO L225 Difference]: With dead ends: 1581 [2018-10-27 06:19:08,866 INFO L226 Difference]: Without dead ends: 1065 [2018-10-27 06:19:08,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:19:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-27 06:19:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-27 06:19:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-27 06:19:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-27 06:19:08,954 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 184 [2018-10-27 06:19:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:08,954 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-27 06:19:08,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:19:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-27 06:19:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-27 06:19:08,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:08,965 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] [2018-10-27 06:19:08,965 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:08,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:08,965 INFO L82 PathProgramCache]: Analyzing trace with hash 12780901, now seen corresponding path program 1 times [2018-10-27 06:19:08,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:08,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:08,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:08,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:08,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:09,298 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 06:19:09,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:19:09,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:19:09,299 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:09,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:19:09,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:19:09,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:19:09,301 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-27 06:19:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:12,279 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-10-27 06:19:12,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:19:12,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2018-10-27 06:19:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:12,298 INFO L225 Difference]: With dead ends: 2887 [2018-10-27 06:19:12,299 INFO L226 Difference]: Without dead ends: 1870 [2018-10-27 06:19:12,304 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 06:19:12,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-10-27 06:19:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-10-27 06:19:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-10-27 06:19:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-10-27 06:19:12,369 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 187 [2018-10-27 06:19:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:12,370 INFO L481 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-10-27 06:19:12,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:19:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-10-27 06:19:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-27 06:19:12,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:12,379 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 06:19:12,379 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:12,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:12,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1985831946, now seen corresponding path program 1 times [2018-10-27 06:19:12,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:12,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:12,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:12,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:12,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:19:12,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:19:12,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:19:12,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:12,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:19:12,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:19:12,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:19:12,721 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-10-27 06:19:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:14,349 INFO L93 Difference]: Finished difference Result 5422 states and 9195 transitions. [2018-10-27 06:19:14,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:19:14,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-10-27 06:19:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:14,383 INFO L225 Difference]: With dead ends: 5422 [2018-10-27 06:19:14,383 INFO L226 Difference]: Without dead ends: 3563 [2018-10-27 06:19:14,394 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 06:19:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2018-10-27 06:19:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3541. [2018-10-27 06:19:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3541 states. [2018-10-27 06:19:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 5808 transitions. [2018-10-27 06:19:14,587 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 5808 transitions. Word has length 207 [2018-10-27 06:19:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:14,588 INFO L481 AbstractCegarLoop]: Abstraction has 3541 states and 5808 transitions. [2018-10-27 06:19:14,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:19:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 5808 transitions. [2018-10-27 06:19:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-27 06:19:14,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:14,604 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:19:14,604 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:14,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:14,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1023448885, now seen corresponding path program 1 times [2018-10-27 06:19:14,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:14,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:14,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:14,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:14,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:14,908 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 06:19:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:19:15,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:19:15,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 06:19:15,343 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:15,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 06:19:15,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 06:19:15,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:19:15,344 INFO L87 Difference]: Start difference. First operand 3541 states and 5808 transitions. Second operand 7 states. [2018-10-27 06:19:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:19,499 INFO L93 Difference]: Finished difference Result 15784 states and 30060 transitions. [2018-10-27 06:19:19,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 06:19:19,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2018-10-27 06:19:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:19,611 INFO L225 Difference]: With dead ends: 15784 [2018-10-27 06:19:19,611 INFO L226 Difference]: Without dead ends: 12249 [2018-10-27 06:19:19,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-10-27 06:19:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12249 states. [2018-10-27 06:19:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12249 to 11635. [2018-10-27 06:19:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11635 states. [2018-10-27 06:19:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11635 states to 11635 states and 19720 transitions. [2018-10-27 06:19:20,130 INFO L78 Accepts]: Start accepts. Automaton has 11635 states and 19720 transitions. Word has length 252 [2018-10-27 06:19:20,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:20,131 INFO L481 AbstractCegarLoop]: Abstraction has 11635 states and 19720 transitions. [2018-10-27 06:19:20,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 06:19:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 11635 states and 19720 transitions. [2018-10-27 06:19:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-27 06:19:20,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:20,201 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:20,201 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:20,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:20,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1457202219, now seen corresponding path program 1 times [2018-10-27 06:19:20,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:20,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:20,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:20,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:20,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:20,596 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 06:19:20,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:19:20,597 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:19:20,598 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-10-27 06:19:20,600 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [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], [315], [318], [322], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:19:20,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:19:20,681 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:19:21,816 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:19:21,818 INFO L272 AbstractInterpreter]: Visited 175 different actions 175 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 06:19:21,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:21,853 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:19:23,070 INFO L227 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 71.54% of their original sizes. [2018-10-27 06:19:23,070 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:19:23,689 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-10-27 06:19:23,690 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:19:23,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:19:23,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-27 06:19:23,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:23,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 06:19:23,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 06:19:23,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:19:23,692 INFO L87 Difference]: Start difference. First operand 11635 states and 19720 transitions. Second operand 11 states. [2018-10-27 06:19:47,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:19:47,283 INFO L93 Difference]: Finished difference Result 23409 states and 39157 transitions. [2018-10-27 06:19:47,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:19:47,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 267 [2018-10-27 06:19:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:19:47,334 INFO L225 Difference]: With dead ends: 23409 [2018-10-27 06:19:47,334 INFO L226 Difference]: Without dead ends: 11780 [2018-10-27 06:19:47,377 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 267 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-10-27 06:19:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11780 states. [2018-10-27 06:19:47,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11780 to 11778. [2018-10-27 06:19:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11778 states. [2018-10-27 06:19:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 19305 transitions. [2018-10-27 06:19:47,686 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 19305 transitions. Word has length 267 [2018-10-27 06:19:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:19:47,686 INFO L481 AbstractCegarLoop]: Abstraction has 11778 states and 19305 transitions. [2018-10-27 06:19:47,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-27 06:19:47,687 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 19305 transitions. [2018-10-27 06:19:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-27 06:19:47,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:19:47,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:47,728 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:19:47,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:47,729 INFO L82 PathProgramCache]: Analyzing trace with hash 86729562, now seen corresponding path program 1 times [2018-10-27 06:19:47,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:19:47,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:47,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:19:47,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:19:47,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:19:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:19:48,321 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:19:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:19:48,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:19:48,421 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:19:48,421 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-10-27 06:19:48,422 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], [315], [318], [322], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:19:48,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:19:48,433 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:19:49,130 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:19:49,130 INFO L272 AbstractInterpreter]: Visited 178 different actions 349 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 06:19:49,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:19:49,141 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:19:50,093 INFO L227 lantSequenceWeakener]: Weakened 269 states. On average, predicates are now at 74.13% of their original sizes. [2018-10-27 06:19:50,094 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:19:50,566 INFO L415 sIntCurrentIteration]: We unified 273 AI predicates to 273 [2018-10-27 06:19:50,567 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:19:50,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:19:50,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-27 06:19:50,568 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:19:50,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 06:19:50,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 06:19:50,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-27 06:19:50,570 INFO L87 Difference]: Start difference. First operand 11778 states and 19305 transitions. Second operand 15 states. [2018-10-27 06:20:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:20:29,131 INFO L93 Difference]: Finished difference Result 28880 states and 47990 transitions. [2018-10-27 06:20:29,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 06:20:29,132 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 274 [2018-10-27 06:20:29,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:20:29,220 INFO L225 Difference]: With dead ends: 28880 [2018-10-27 06:20:29,220 INFO L226 Difference]: Without dead ends: 17316 [2018-10-27 06:20:29,248 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 282 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2018-10-27 06:20:29,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17316 states. [2018-10-27 06:20:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17316 to 17306. [2018-10-27 06:20:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17306 states. [2018-10-27 06:20:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17306 states to 17306 states and 28041 transitions. [2018-10-27 06:20:29,636 INFO L78 Accepts]: Start accepts. Automaton has 17306 states and 28041 transitions. Word has length 274 [2018-10-27 06:20:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:20:29,637 INFO L481 AbstractCegarLoop]: Abstraction has 17306 states and 28041 transitions. [2018-10-27 06:20:29,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 06:20:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 17306 states and 28041 transitions. [2018-10-27 06:20:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-27 06:20:29,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:20:29,690 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:29,690 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:20:29,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:20:29,690 INFO L82 PathProgramCache]: Analyzing trace with hash -974249088, now seen corresponding path program 1 times [2018-10-27 06:20:29,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:20:29,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:20:29,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:20:29,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:20:29,693 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:20:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:20:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 104 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 06:20:30,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:20:30,441 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:20:30,441 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-10-27 06:20:30,442 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [52], [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], [315], [318], [322], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:20:30,449 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:20:30,449 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:20:31,282 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:20:31,282 INFO L272 AbstractInterpreter]: Visited 179 different actions 352 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 06:20:31,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:20:31,292 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:20:31,949 INFO L227 lantSequenceWeakener]: Weakened 278 states. On average, predicates are now at 71.98% of their original sizes. [2018-10-27 06:20:31,949 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:20:32,209 INFO L415 sIntCurrentIteration]: We unified 282 AI predicates to 282 [2018-10-27 06:20:32,209 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:20:32,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:20:32,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [9] total 27 [2018-10-27 06:20:32,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:20:32,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 06:20:32,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 06:20:32,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-27 06:20:32,211 INFO L87 Difference]: Start difference. First operand 17306 states and 28041 transitions. Second operand 20 states. [2018-10-27 06:20:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:20:54,949 INFO L93 Difference]: Finished difference Result 29951 states and 48944 transitions. [2018-10-27 06:20:54,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 06:20:54,949 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 283 [2018-10-27 06:20:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:20:54,991 INFO L225 Difference]: With dead ends: 29951 [2018-10-27 06:20:54,991 INFO L226 Difference]: Without dead ends: 13280 [2018-10-27 06:20:55,020 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 291 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-10-27 06:20:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13280 states. [2018-10-27 06:20:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13280 to 13209. [2018-10-27 06:20:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13209 states. [2018-10-27 06:20:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13209 states to 13209 states and 21288 transitions. [2018-10-27 06:20:55,304 INFO L78 Accepts]: Start accepts. Automaton has 13209 states and 21288 transitions. Word has length 283 [2018-10-27 06:20:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:20:55,305 INFO L481 AbstractCegarLoop]: Abstraction has 13209 states and 21288 transitions. [2018-10-27 06:20:55,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 06:20:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 13209 states and 21288 transitions. [2018-10-27 06:20:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-27 06:20:55,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:20:55,335 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:55,335 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:20:55,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:20:55,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1814996819, now seen corresponding path program 1 times [2018-10-27 06:20:55,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:20:55,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:20:55,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:20:55,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:20:55,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:20:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:20:55,627 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:20:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 130 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-27 06:20:55,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:20:55,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:20:55,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 288 with the following transitions: [2018-10-27 06:20:55,945 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [28], [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], [315], [318], [322], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:20:55,954 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:20:55,954 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:20:57,572 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:20:57,573 INFO L272 AbstractInterpreter]: Visited 183 different actions 726 times. Merged at 8 different actions 33 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:20:57,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:20:57,583 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:20:57,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:20:57,583 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 06:20:57,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:20:57,593 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:20:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:20:57,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:20:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-27 06:20:58,347 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:20:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-27 06:20:59,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:20:59,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 06:20:59,384 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:20:59,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:20:59,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:20:59,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:20:59,385 INFO L87 Difference]: Start difference. First operand 13209 states and 21288 transitions. Second operand 9 states. [2018-10-27 06:20:59,773 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:21:04,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:21:04,821 INFO L93 Difference]: Finished difference Result 47673 states and 91901 transitions. [2018-10-27 06:21:04,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-27 06:21:04,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2018-10-27 06:21:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:21:05,023 INFO L225 Difference]: With dead ends: 47673 [2018-10-27 06:21:05,023 INFO L226 Difference]: Without dead ends: 35310 [2018-10-27 06:21:05,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 583 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2018-10-27 06:21:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35310 states. [2018-10-27 06:21:06,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35310 to 33245. [2018-10-27 06:21:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33245 states. [2018-10-27 06:21:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33245 states to 33245 states and 48383 transitions. [2018-10-27 06:21:06,344 INFO L78 Accepts]: Start accepts. Automaton has 33245 states and 48383 transitions. Word has length 287 [2018-10-27 06:21:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:21:06,344 INFO L481 AbstractCegarLoop]: Abstraction has 33245 states and 48383 transitions. [2018-10-27 06:21:06,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:21:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33245 states and 48383 transitions. [2018-10-27 06:21:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-27 06:21:06,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:21:06,459 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:06,459 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:21:06,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1331347363, now seen corresponding path program 1 times [2018-10-27 06:21:06,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:21:06,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:06,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:21:06,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:06,461 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:21:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:21:06,798 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:21:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 06:21:07,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:21:07,548 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:21:07,548 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-10-27 06:21:07,548 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [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], [315], [318], [322], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:21:07,553 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:21:07,553 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:21:09,797 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:21:09,797 INFO L272 AbstractInterpreter]: Visited 182 different actions 724 times. Merged at 8 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 06:21:09,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:09,803 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:21:09,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:21:09,803 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 06:21:09,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:21:09,812 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:21:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:21:10,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:21:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 06:21:10,324 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:21:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 116 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:21:10,476 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:21:10,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 06:21:10,476 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:21:10,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 06:21:10,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 06:21:10,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-27 06:21:10,478 INFO L87 Difference]: Start difference. First operand 33245 states and 48383 transitions. Second operand 12 states. [2018-10-27 06:21:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:21:16,358 INFO L93 Difference]: Finished difference Result 80642 states and 120348 transitions. [2018-10-27 06:21:16,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-27 06:21:16,359 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2018-10-27 06:21:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:21:16,529 INFO L225 Difference]: With dead ends: 80642 [2018-10-27 06:21:16,529 INFO L226 Difference]: Without dead ends: 47824 [2018-10-27 06:21:16,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 594 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-10-27 06:21:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47824 states. [2018-10-27 06:21:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47824 to 47280. [2018-10-27 06:21:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47280 states. [2018-10-27 06:21:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47280 states to 47280 states and 66324 transitions. [2018-10-27 06:21:17,939 INFO L78 Accepts]: Start accepts. Automaton has 47280 states and 66324 transitions. Word has length 286 [2018-10-27 06:21:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:21:17,939 INFO L481 AbstractCegarLoop]: Abstraction has 47280 states and 66324 transitions. [2018-10-27 06:21:17,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 06:21:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 47280 states and 66324 transitions. [2018-10-27 06:21:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-27 06:21:18,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:21:18,012 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-27 06:21:18,012 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:21:18,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash -910179014, now seen corresponding path program 1 times [2018-10-27 06:21:18,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:21:18,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:18,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:21:18,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:18,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:21:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:21:18,634 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:21:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 187 proven. 58 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-27 06:21:18,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:21:18,725 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:21:18,725 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-27 06:21:18,726 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [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], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:21:18,730 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:21:18,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:21:20,120 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:21:20,120 INFO L272 AbstractInterpreter]: Visited 181 different actions 724 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 06:21:20,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:20,128 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:21:20,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:21:20,128 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 06:21:20,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:21:20,137 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:21:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:21:20,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:21:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 202 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-27 06:21:20,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:21:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 202 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-27 06:21:21,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:21:21,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 06:21:21,336 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:21:21,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:21:21,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:21:21,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:21:21,337 INFO L87 Difference]: Start difference. First operand 47280 states and 66324 transitions. Second operand 9 states. [2018-10-27 06:21:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:21:31,611 INFO L93 Difference]: Finished difference Result 200865 states and 287401 transitions. [2018-10-27 06:21:31,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-27 06:21:31,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2018-10-27 06:21:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:21:32,177 INFO L225 Difference]: With dead ends: 200865 [2018-10-27 06:21:32,177 INFO L226 Difference]: Without dead ends: 154010 [2018-10-27 06:21:32,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=368, Invalid=1524, Unknown=0, NotChecked=0, Total=1892 [2018-10-27 06:21:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154010 states. [2018-10-27 06:21:36,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154010 to 153650. [2018-10-27 06:21:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153650 states. [2018-10-27 06:21:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153650 states to 153650 states and 199097 transitions. [2018-10-27 06:21:36,493 INFO L78 Accepts]: Start accepts. Automaton has 153650 states and 199097 transitions. Word has length 337 [2018-10-27 06:21:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:21:36,493 INFO L481 AbstractCegarLoop]: Abstraction has 153650 states and 199097 transitions. [2018-10-27 06:21:36,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:21:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand 153650 states and 199097 transitions. [2018-10-27 06:21:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-27 06:21:36,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:21:36,654 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:36,654 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:21:36,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1524636684, now seen corresponding path program 1 times [2018-10-27 06:21:36,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:21:36,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:36,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:21:36,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:21:36,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:21:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:21:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 274 proven. 66 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-10-27 06:21:37,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:21:37,109 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:21:37,109 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-10-27 06:21:37,109 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [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], [123], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:21:37,113 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:21:37,113 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:21:38,766 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:21:38,766 INFO L272 AbstractInterpreter]: Visited 182 different actions 735 times. Merged at 10 different actions 42 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 06:21:38,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:21:38,773 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:21:38,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:21:38,773 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 06:21:38,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:21:38,782 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:21:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:21:39,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:21:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-10-27 06:21:39,272 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:21:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 274 proven. 66 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-10-27 06:21:40,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:21:40,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-27 06:21:40,762 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:21:40,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 06:21:40,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:21:40,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:21:40,763 INFO L87 Difference]: Start difference. First operand 153650 states and 199097 transitions. Second operand 6 states. [2018-10-27 06:21:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:21:53,585 INFO L93 Difference]: Finished difference Result 408163 states and 566329 transitions. [2018-10-27 06:21:53,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 06:21:53,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 395 [2018-10-27 06:21:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:21:54,608 INFO L225 Difference]: With dead ends: 408163 [2018-10-27 06:21:54,608 INFO L226 Difference]: Without dead ends: 255152 [2018-10-27 06:21:54,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 791 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:21:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255152 states. [2018-10-27 06:21:59,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255152 to 248596. [2018-10-27 06:21:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248596 states. [2018-10-27 06:22:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248596 states to 248596 states and 307518 transitions. [2018-10-27 06:22:00,435 INFO L78 Accepts]: Start accepts. Automaton has 248596 states and 307518 transitions. Word has length 395 [2018-10-27 06:22:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:22:00,435 INFO L481 AbstractCegarLoop]: Abstraction has 248596 states and 307518 transitions. [2018-10-27 06:22:00,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:22:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 248596 states and 307518 transitions. [2018-10-27 06:22:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-10-27 06:22:00,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:00,651 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-27 06:22:00,651 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:00,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:00,652 INFO L82 PathProgramCache]: Analyzing trace with hash -865693438, now seen corresponding path program 1 times [2018-10-27 06:22:00,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:00,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:00,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:00,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:00,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 277 proven. 134 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-27 06:22:01,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:22:01,999 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:22:01,999 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 421 with the following transitions: [2018-10-27 06:22:01,999 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [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], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [335], [339], [343], [347], [350], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:22:02,004 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:22:02,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:22:03,364 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:22:03,364 INFO L272 AbstractInterpreter]: Visited 182 different actions 728 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 5 different actions. Largest state had 88 variables. [2018-10-27 06:22:03,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:03,371 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:22:03,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:22:03,371 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 06:22:03,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:03,380 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:22:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:03,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:22:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-27 06:22:03,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:22:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 334 proven. 58 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-27 06:22:03,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:22:03,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 06:22:03,977 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:22:03,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:22:03,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:22:03,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:22:03,978 INFO L87 Difference]: Start difference. First operand 248596 states and 307518 transitions. Second operand 9 states. [2018-10-27 06:22:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:22:15,549 INFO L93 Difference]: Finished difference Result 517363 states and 677428 transitions. [2018-10-27 06:22:15,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-27 06:22:15,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 420 [2018-10-27 06:22:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:22:16,480 INFO L225 Difference]: With dead ends: 517363 [2018-10-27 06:22:16,480 INFO L226 Difference]: Without dead ends: 243460 [2018-10-27 06:22:17,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 872 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2018-10-27 06:22:17,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243460 states. [2018-10-27 06:22:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243460 to 226092. [2018-10-27 06:22:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226092 states. [2018-10-27 06:22:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226092 states to 226092 states and 257794 transitions. [2018-10-27 06:22:22,727 INFO L78 Accepts]: Start accepts. Automaton has 226092 states and 257794 transitions. Word has length 420 [2018-10-27 06:22:22,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:22:22,727 INFO L481 AbstractCegarLoop]: Abstraction has 226092 states and 257794 transitions. [2018-10-27 06:22:22,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:22:22,727 INFO L276 IsEmpty]: Start isEmpty. Operand 226092 states and 257794 transitions. [2018-10-27 06:22:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-27 06:22:22,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:22,871 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:22,872 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:22,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:22,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1038675657, now seen corresponding path program 1 times [2018-10-27 06:22:22,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:22,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:22,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:22,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:22,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 321 proven. 126 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-27 06:22:23,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:22:23,320 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:22:23,321 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-10-27 06:22:23,321 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [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], [123], [124], [127], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [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], [853], [855], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:22:23,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:22:23,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:22:25,439 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:22:25,439 INFO L272 AbstractInterpreter]: Visited 183 different actions 739 times. Merged at 10 different actions 42 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 5 different actions. Largest state had 88 variables. [2018-10-27 06:22:25,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:25,446 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:22:25,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:22:25,446 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 06:22:25,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:25,454 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:22:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:25,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:22:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-10-27 06:22:25,895 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:22:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-10-27 06:22:26,049 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:22:26,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-27 06:22:26,050 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:26,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:22:26,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:22:26,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:22:26,053 INFO L87 Difference]: Start difference. First operand 226092 states and 257794 transitions. Second operand 3 states. Received shutdown request... [2018-10-27 06:22:29,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:22:29,520 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 06:22:29,526 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 06:22:29,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:22:29 BoogieIcfgContainer [2018-10-27 06:22:29,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 06:22:29,528 INFO L168 Benchmark]: Toolchain (without parser) took 215818.19 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 4.0 GB. Max. memory is 7.1 GB. [2018-10-27 06:22:29,533 INFO L168 Benchmark]: CDTParser took 0.18 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 06:22:29,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1208.75 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 06:22:29,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 338.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 06:22:29,535 INFO L168 Benchmark]: Boogie Preprocessor took 162.42 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 06:22:29,536 INFO L168 Benchmark]: RCFGBuilder took 4971.12 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: 264.2 MB). Peak memory consumption was 264.2 MB. Max. memory is 7.1 GB. [2018-10-27 06:22:29,537 INFO L168 Benchmark]: TraceAbstraction took 209131.48 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -541.2 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-10-27 06:22:29,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1208.75 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 338.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.42 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4971.12 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: 264.2 MB). Peak memory consumption was 264.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209131.48 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -541.2 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1536]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1536). Cancelled while BasicCegarLoop was constructing difference of abstraction (226092states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (297211 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 209.0s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 154.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3540 SDtfs, 24028 SDslu, 5365 SDs, 0 SdLazy, 32306 SolverSat, 6856 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.5s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 5474 GetRequests, 5204 SyntacticMatches, 19 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2234 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248596occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.2s AbstIntTime, 9 AbstIntIterations, 3 AbstIntStrong, 0.9992011310104307 AbsIntWeakeningRatio, 0.2582216808769793 AbsIntAvgWeakeningVarsNumRemoved, 56.53593179049939 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 27661 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 6146 NumberOfCodeBlocks, 6146 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8279 ConstructedInterpolants, 0 QuantifiedInterpolants, 6057071 SizeOfPredicates, 3 NumberOfNonLiveVariables, 9363 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 26 InterpolantComputations, 7 PerfectInterpolantSequences, 6669/7306 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown