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/Problem14_label58_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:31:51,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:31:51,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:31:51,858 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:31:51,859 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:31:51,861 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:31:51,864 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:31:51,866 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:31:51,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:31:51,872 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:31:51,873 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:31:51,875 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:31:51,876 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:31:51,878 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:31:51,879 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:31:51,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:31:51,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:31:51,892 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:31:51,895 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:31:51,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:31:51,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:31:51,899 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:31:51,901 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:31:51,901 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:31:51,901 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:31:51,902 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:31:51,903 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:31:51,904 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:31:51,904 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:31:51,905 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:31:51,906 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:31:51,906 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 05:31:51,908 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 05:31:51,931 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:31:51,931 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:31:51,932 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:31:51,932 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:31:51,933 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:31:51,938 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:31:51,938 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:31:51,938 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:31:51,939 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:31:51,939 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:31:51,939 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:31:51,939 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:31:51,939 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:31:51,940 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:31:51,941 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:31:51,941 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:31:51,941 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:31:51,941 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:31:51,942 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:31:51,943 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:31:51,944 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:31:51,944 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:31:51,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:31:51,944 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:31:51,944 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:31:51,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:31:51,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:31:51,945 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:31:51,945 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:31:51,946 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:31:51,946 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:31:51,946 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:31:51,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:31:51,946 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:31:51,947 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:31:51,947 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:31:51,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:31:52,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:31:52,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:31:52,015 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:31:52,016 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:31:52,017 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-10-27 05:31:52,081 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b60679aa/43f8454631354fc3ac264b2ae6555e17/FLAG6676e3241 [2018-10-27 05:31:52,638 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:31:52,639 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-10-27 05:31:52,664 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b60679aa/43f8454631354fc3ac264b2ae6555e17/FLAG6676e3241 [2018-10-27 05:31:52,685 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7b60679aa/43f8454631354fc3ac264b2ae6555e17 [2018-10-27 05:31:52,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:31:52,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:31:52,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:31:52,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:31:52,708 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:31:52,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:31:52" (1/1) ... [2018-10-27 05:31:52,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:52, skipping insertion in model container [2018-10-27 05:31:52,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:31:52" (1/1) ... [2018-10-27 05:31:52,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:31:52,807 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:31:53,420 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:31:53,426 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:31:53,589 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:31:53,608 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:31:53,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53 WrapperNode [2018-10-27 05:31:53,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:31:53,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:31:53,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:31:53,610 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:31:53,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:31:53,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:31:53,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:31:53,847 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:31:53,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (1/1) ... [2018-10-27 05:31:53,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:31:53,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:31:53,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:31:53,975 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:31:53,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (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 05:31:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:31:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:31:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:31:54,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:31:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:31:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:31:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:31:54,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:31:57,389 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:31:57,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:31:57 BoogieIcfgContainer [2018-10-27 05:31:57,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:31:57,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:31:57,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:31:57,395 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:31:57,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:31:52" (1/3) ... [2018-10-27 05:31:57,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:31:57, skipping insertion in model container [2018-10-27 05:31:57,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:31:53" (2/3) ... [2018-10-27 05:31:57,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:31:57, skipping insertion in model container [2018-10-27 05:31:57,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:31:57" (3/3) ... [2018-10-27 05:31:57,400 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label58_false-unreach-call_false-termination.c [2018-10-27 05:31:57,410 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:31:57,422 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:31:57,440 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:31:57,479 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:31:57,479 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:31:57,480 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:31:57,480 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:31:57,480 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:31:57,480 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:31:57,480 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:31:57,481 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:31:57,508 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:31:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 05:31:57,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:31:57,518 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] [2018-10-27 05:31:57,520 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:31:57,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:31:57,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1333191671, now seen corresponding path program 1 times [2018-10-27 05:31:57,529 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:31:57,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:57,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:31:57,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:31:57,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:31:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:31:57,940 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 05:31:57,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:31:57,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:31:57,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:31:57,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:31:57,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:31:57,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:31:57,963 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-27 05:32:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:00,868 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-27 05:32:00,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:32:00,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-27 05:32:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:00,899 INFO L225 Difference]: With dead ends: 894 [2018-10-27 05:32:00,900 INFO L226 Difference]: Without dead ends: 633 [2018-10-27 05:32:00,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:32:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-27 05:32:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-27 05:32:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-27 05:32:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-10-27 05:32:01,023 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 21 [2018-10-27 05:32:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:01,024 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-10-27 05:32:01,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:32:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-10-27 05:32:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-27 05:32:01,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:01,033 INFO L375 BasicCegarLoop]: trace histogram [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 05:32:01,034 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:01,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:01,034 INFO L82 PathProgramCache]: Analyzing trace with hash -128001133, now seen corresponding path program 1 times [2018-10-27 05:32:01,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:01,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:01,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:01,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:01,037 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:32:01,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:32:01,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:32:01,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:32:01,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:32:01,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:32:01,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:32:01,450 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-10-27 05:32:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:04,772 INFO L93 Difference]: Finished difference Result 2358 states and 3922 transitions. [2018-10-27 05:32:04,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:32:04,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-27 05:32:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:04,794 INFO L225 Difference]: With dead ends: 2358 [2018-10-27 05:32:04,794 INFO L226 Difference]: Without dead ends: 1731 [2018-10-27 05:32:04,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:32:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-27 05:32:04,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-27 05:32:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-27 05:32:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-10-27 05:32:04,911 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 134 [2018-10-27 05:32:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:04,912 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-10-27 05:32:04,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:32:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-10-27 05:32:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-27 05:32:04,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:04,928 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:32:04,929 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:04,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1381552484, now seen corresponding path program 1 times [2018-10-27 05:32:04,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:04,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:04,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:04,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:04,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:32:05,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:32:05,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:32:05,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:32:05,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:32:05,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:32:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:32:05,233 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 4 states. [2018-10-27 05:32:08,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:08,202 INFO L93 Difference]: Finished difference Result 6200 states and 9916 transitions. [2018-10-27 05:32:08,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:32:08,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-10-27 05:32:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:08,244 INFO L225 Difference]: With dead ends: 6200 [2018-10-27 05:32:08,244 INFO L226 Difference]: Without dead ends: 4475 [2018-10-27 05:32:08,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:32:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2018-10-27 05:32:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4292. [2018-10-27 05:32:08,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2018-10-27 05:32:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 6361 transitions. [2018-10-27 05:32:08,421 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 6361 transitions. Word has length 155 [2018-10-27 05:32:08,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:08,422 INFO L481 AbstractCegarLoop]: Abstraction has 4292 states and 6361 transitions. [2018-10-27 05:32:08,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:32:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 6361 transitions. [2018-10-27 05:32:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-27 05:32:08,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:08,436 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:08,436 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:08,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:08,437 INFO L82 PathProgramCache]: Analyzing trace with hash 622289172, now seen corresponding path program 1 times [2018-10-27 05:32:08,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:08,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:08,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:08,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:08,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:09,276 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-10-27 05:32:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 119 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 05:32:09,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:09,776 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:09,777 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-10-27 05:32:09,779 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:09,842 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:09,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:10,839 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:32:10,842 INFO L272 AbstractInterpreter]: Visited 137 different actions 137 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:32:10,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:10,884 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:32:11,816 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 77.38% of their original sizes. [2018-10-27 05:32:11,816 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:32:12,086 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-10-27 05:32:12,087 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:32:12,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:32:12,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2018-10-27 05:32:12,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:32:12,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:32:12,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:32:12,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:32:12,090 INFO L87 Difference]: Start difference. First operand 4292 states and 6361 transitions. Second operand 6 states. [2018-10-27 05:32:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:32:24,380 INFO L93 Difference]: Finished difference Result 8763 states and 12926 transitions. [2018-10-27 05:32:24,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:32:24,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 313 [2018-10-27 05:32:24,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:32:24,411 INFO L225 Difference]: With dead ends: 8763 [2018-10-27 05:32:24,411 INFO L226 Difference]: Without dead ends: 4477 [2018-10-27 05:32:24,435 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:32:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2018-10-27 05:32:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4475. [2018-10-27 05:32:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2018-10-27 05:32:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6552 transitions. [2018-10-27 05:32:24,564 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6552 transitions. Word has length 313 [2018-10-27 05:32:24,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:32:24,565 INFO L481 AbstractCegarLoop]: Abstraction has 4475 states and 6552 transitions. [2018-10-27 05:32:24,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:32:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6552 transitions. [2018-10-27 05:32:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-10-27 05:32:24,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:32:24,581 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:32:24,581 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:32:24,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:24,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1980550211, now seen corresponding path program 1 times [2018-10-27 05:32:24,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:32:24,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:24,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:32:24,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:32:24,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:32:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:32:25,161 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:32:25,365 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:32:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 130 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:32:25,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:32:25,990 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:32:25,990 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-10-27 05:32:25,991 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:32:25,997 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:32:25,997 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:32:26,310 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:32:26,311 INFO L272 AbstractInterpreter]: Visited 140 different actions 273 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:32:26,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:32:26,332 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:32:26,785 INFO L227 lantSequenceWeakener]: Weakened 321 states. On average, predicates are now at 77.42% of their original sizes. [2018-10-27 05:32:26,785 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:32:27,084 INFO L415 sIntCurrentIteration]: We unified 323 AI predicates to 323 [2018-10-27 05:32:27,084 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:32:27,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:32:27,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-10-27 05:32:27,087 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:32:27,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:32:27,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:32:27,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:32:27,088 INFO L87 Difference]: Start difference. First operand 4475 states and 6552 transitions. Second operand 10 states. [2018-10-27 05:33:08,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:33:08,255 INFO L93 Difference]: Finished difference Result 9317 states and 13602 transitions. [2018-10-27 05:33:08,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 05:33:08,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 324 [2018-10-27 05:33:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:33:08,284 INFO L225 Difference]: With dead ends: 9317 [2018-10-27 05:33:08,285 INFO L226 Difference]: Without dead ends: 5031 [2018-10-27 05:33:08,311 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 332 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:33:08,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2018-10-27 05:33:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 5028. [2018-10-27 05:33:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5028 states. [2018-10-27 05:33:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 7145 transitions. [2018-10-27 05:33:08,446 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 7145 transitions. Word has length 324 [2018-10-27 05:33:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:33:08,448 INFO L481 AbstractCegarLoop]: Abstraction has 5028 states and 7145 transitions. [2018-10-27 05:33:08,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:33:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 7145 transitions. [2018-10-27 05:33:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-27 05:33:08,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:33:08,472 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2018-10-27 05:33:08,473 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:33:08,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:08,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1429919366, now seen corresponding path program 1 times [2018-10-27 05:33:08,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:33:08,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:08,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:08,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:08,475 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:33:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 254 proven. 224 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 05:33:09,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:09,929 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:33:09,929 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-10-27 05:33:09,930 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:33:09,934 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:33:09,935 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:33:10,208 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:33:10,209 INFO L272 AbstractInterpreter]: Visited 141 different actions 276 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:33:10,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:10,246 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:33:10,672 INFO L227 lantSequenceWeakener]: Weakened 421 states. On average, predicates are now at 77.42% of their original sizes. [2018-10-27 05:33:10,673 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:33:10,785 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-10-27 05:33:10,786 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:33:10,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:33:10,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-10-27 05:33:10,786 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:33:10,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:33:10,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:33:10,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:33:10,787 INFO L87 Difference]: Start difference. First operand 5028 states and 7145 transitions. Second operand 10 states. [2018-10-27 05:33:34,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:33:34,475 INFO L93 Difference]: Finished difference Result 10055 states and 14307 transitions. [2018-10-27 05:33:34,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:33:34,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 424 [2018-10-27 05:33:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:33:34,501 INFO L225 Difference]: With dead ends: 10055 [2018-10-27 05:33:34,501 INFO L226 Difference]: Without dead ends: 5216 [2018-10-27 05:33:34,522 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 431 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:33:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2018-10-27 05:33:34,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 5213. [2018-10-27 05:33:34,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5213 states. [2018-10-27 05:33:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7344 transitions. [2018-10-27 05:33:34,637 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7344 transitions. Word has length 424 [2018-10-27 05:33:34,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:33:34,638 INFO L481 AbstractCegarLoop]: Abstraction has 5213 states and 7344 transitions. [2018-10-27 05:33:34,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:33:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7344 transitions. [2018-10-27 05:33:34,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-10-27 05:33:34,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:33:34,661 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:33:34,661 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:33:34,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:34,661 INFO L82 PathProgramCache]: Analyzing trace with hash -676378677, now seen corresponding path program 1 times [2018-10-27 05:33:34,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:33:34,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:34,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:34,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:34,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:33:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 245 proven. 147 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-10-27 05:33:35,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:35,542 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:33:35,543 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 481 with the following transitions: [2018-10-27 05:33:35,543 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:33:35,547 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:33:35,548 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:33:41,522 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:33:41,523 INFO L272 AbstractInterpreter]: Visited 123 different actions 491 times. Merged at 10 different actions 35 times. Never widened. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:33:41,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:41,530 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:33:41,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:41,530 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 05:33:41,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:41,540 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:33:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:41,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:33:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 668 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-10-27 05:33:42,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:33:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 245 proven. 147 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-10-27 05:33:42,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:33:42,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-10-27 05:33:42,802 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:33:42,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:33:42,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:33:42,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-10-27 05:33:42,805 INFO L87 Difference]: Start difference. First operand 5213 states and 7344 transitions. Second operand 10 states. [2018-10-27 05:33:48,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:33:48,607 INFO L93 Difference]: Finished difference Result 14401 states and 21622 transitions. [2018-10-27 05:33:48,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 05:33:48,607 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 480 [2018-10-27 05:33:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:33:48,662 INFO L225 Difference]: With dead ends: 14401 [2018-10-27 05:33:48,662 INFO L226 Difference]: Without dead ends: 9562 [2018-10-27 05:33:48,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 972 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-10-27 05:33:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9562 states. [2018-10-27 05:33:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9562 to 9147. [2018-10-27 05:33:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9147 states. [2018-10-27 05:33:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 12495 transitions. [2018-10-27 05:33:48,971 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 12495 transitions. Word has length 480 [2018-10-27 05:33:48,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:33:48,972 INFO L481 AbstractCegarLoop]: Abstraction has 9147 states and 12495 transitions. [2018-10-27 05:33:48,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:33:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 12495 transitions. [2018-10-27 05:33:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-10-27 05:33:48,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:33:49,000 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:33:49,000 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:33:49,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:49,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1350361432, now seen corresponding path program 1 times [2018-10-27 05:33:49,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:33:49,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:49,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:49,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:49,002 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:33:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:49,823 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 168 proven. 265 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-10-27 05:33:49,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:49,823 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:33:49,823 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 510 with the following transitions: [2018-10-27 05:33:49,824 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:33:49,833 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:33:49,833 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:33:50,987 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:33:50,987 INFO L272 AbstractInterpreter]: Visited 143 different actions 577 times. Merged at 10 different actions 41 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 05:33:51,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:51,018 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:33:51,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:33:51,018 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 05:33:51,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:51,029 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:33:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:33:51,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:33:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 624 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-27 05:33:51,754 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:33:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 168 proven. 265 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-10-27 05:33:52,947 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:33:52,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 05:33:52,948 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:33:52,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:33:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:33:52,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:33:52,951 INFO L87 Difference]: Start difference. First operand 9147 states and 12495 transitions. Second operand 9 states. [2018-10-27 05:33:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:33:59,137 INFO L93 Difference]: Finished difference Result 19784 states and 28013 transitions. [2018-10-27 05:33:59,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-27 05:33:59,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 509 [2018-10-27 05:33:59,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:33:59,185 INFO L225 Difference]: With dead ends: 19784 [2018-10-27 05:33:59,185 INFO L226 Difference]: Without dead ends: 10642 [2018-10-27 05:33:59,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1035 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-10-27 05:33:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10642 states. [2018-10-27 05:33:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10642 to 10494. [2018-10-27 05:33:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10494 states. [2018-10-27 05:33:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10494 states to 10494 states and 13512 transitions. [2018-10-27 05:33:59,448 INFO L78 Accepts]: Start accepts. Automaton has 10494 states and 13512 transitions. Word has length 509 [2018-10-27 05:33:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:33:59,448 INFO L481 AbstractCegarLoop]: Abstraction has 10494 states and 13512 transitions. [2018-10-27 05:33:59,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:33:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 10494 states and 13512 transitions. [2018-10-27 05:33:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-10-27 05:33:59,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:33:59,477 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 05:33:59,477 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:33:59,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:33:59,478 INFO L82 PathProgramCache]: Analyzing trace with hash -613228998, now seen corresponding path program 1 times [2018-10-27 05:33:59,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:33:59,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:59,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:33:59,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:33:59,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:33:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:00,108 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 05:34:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 389 proven. 409 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-10-27 05:34:01,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:01,012 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:34:01,012 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 534 with the following transitions: [2018-10-27 05:34:01,012 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:34:01,016 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:34:01,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:34:06,835 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:34:06,835 INFO L272 AbstractInterpreter]: Visited 143 different actions 568 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:34:06,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:06,841 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:34:06,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:06,841 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 05:34:06,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:06,851 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:34:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:06,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:34:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 687 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-10-27 05:34:07,668 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:34:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 383 proven. 86 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-10-27 05:34:08,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:34:08,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-10-27 05:34:08,311 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:34:08,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:34:08,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:34:08,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:34:08,312 INFO L87 Difference]: Start difference. First operand 10494 states and 13512 transitions. Second operand 17 states. [2018-10-27 05:34:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:34:16,244 INFO L93 Difference]: Finished difference Result 22633 states and 31444 transitions. [2018-10-27 05:34:16,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-27 05:34:16,245 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 533 [2018-10-27 05:34:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:34:16,294 INFO L225 Difference]: With dead ends: 22633 [2018-10-27 05:34:16,294 INFO L226 Difference]: Without dead ends: 11082 [2018-10-27 05:34:16,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1077 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 05:34:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2018-10-27 05:34:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 10657. [2018-10-27 05:34:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10657 states. [2018-10-27 05:34:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10657 states to 10657 states and 12773 transitions. [2018-10-27 05:34:16,574 INFO L78 Accepts]: Start accepts. Automaton has 10657 states and 12773 transitions. Word has length 533 [2018-10-27 05:34:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:34:16,575 INFO L481 AbstractCegarLoop]: Abstraction has 10657 states and 12773 transitions. [2018-10-27 05:34:16,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:34:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 10657 states and 12773 transitions. [2018-10-27 05:34:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-10-27 05:34:16,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:34:16,585 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 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 05:34:16,585 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:34:16,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:16,586 INFO L82 PathProgramCache]: Analyzing trace with hash -201219189, now seen corresponding path program 1 times [2018-10-27 05:34:16,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:34:16,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:16,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:16,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:16,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:34:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 427 proven. 513 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-10-27 05:34:18,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:18,298 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:34:18,298 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 673 with the following transitions: [2018-10-27 05:34:18,298 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:34:18,302 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:34:18,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:34:24,186 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:34:24,186 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:34:24,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:24,192 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:34:24,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:24,192 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 05:34:24,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:24,202 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:34:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:24,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:34:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 791 proven. 2 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-10-27 05:34:25,204 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:34:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 473 proven. 86 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-10-27 05:34:25,846 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:34:25,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-10-27 05:34:25,846 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:34:25,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:34:25,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:34:25,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:34:25,848 INFO L87 Difference]: Start difference. First operand 10657 states and 12773 transitions. Second operand 17 states. [2018-10-27 05:34:29,364 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-27 05:34:29,558 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-27 05:34:29,935 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-10-27 05:34:30,916 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-10-27 05:34:31,118 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-10-27 05:34:31,597 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 13 [2018-10-27 05:34:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:34:33,634 INFO L93 Difference]: Finished difference Result 22362 states and 26997 transitions. [2018-10-27 05:34:33,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-27 05:34:33,634 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 672 [2018-10-27 05:34:33,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:34:33,671 INFO L225 Difference]: With dead ends: 22362 [2018-10-27 05:34:33,672 INFO L226 Difference]: Without dead ends: 11894 [2018-10-27 05:34:33,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1416 GetRequests, 1366 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2018-10-27 05:34:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2018-10-27 05:34:33,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 11320. [2018-10-27 05:34:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11320 states. [2018-10-27 05:34:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11320 states to 11320 states and 13263 transitions. [2018-10-27 05:34:33,921 INFO L78 Accepts]: Start accepts. Automaton has 11320 states and 13263 transitions. Word has length 672 [2018-10-27 05:34:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:34:33,922 INFO L481 AbstractCegarLoop]: Abstraction has 11320 states and 13263 transitions. [2018-10-27 05:34:33,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:34:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 11320 states and 13263 transitions. [2018-10-27 05:34:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-10-27 05:34:33,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:34:33,935 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2018-10-27 05:34:33,935 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:34:33,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:33,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1619755602, now seen corresponding path program 1 times [2018-10-27 05:34:33,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:34:33,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:33,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:33,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:33,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:34:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 349 proven. 150 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2018-10-27 05:34:34,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:34,659 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:34:34,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 705 with the following transitions: [2018-10-27 05:34:34,659 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:34:34,662 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:34:34,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:34:40,313 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:34:40,314 INFO L272 AbstractInterpreter]: Visited 193 different actions 775 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 05:34:40,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:40,321 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:34:40,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:40,321 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 05:34:40,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:40,329 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:34:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:40,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:34:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 1043 proven. 2 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-10-27 05:34:40,824 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:34:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 349 proven. 150 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2018-10-27 05:34:41,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:34:41,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-27 05:34:41,453 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:34:41,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:34:41,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:34:41,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:34:41,454 INFO L87 Difference]: Start difference. First operand 11320 states and 13263 transitions. Second operand 7 states. [2018-10-27 05:34:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:34:43,734 INFO L93 Difference]: Finished difference Result 26429 states and 31822 transitions. [2018-10-27 05:34:43,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 05:34:43,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 704 [2018-10-27 05:34:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:34:43,774 INFO L225 Difference]: With dead ends: 26429 [2018-10-27 05:34:43,775 INFO L226 Difference]: Without dead ends: 15483 [2018-10-27 05:34:43,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1409 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-10-27 05:34:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15483 states. [2018-10-27 05:34:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15483 to 15282. [2018-10-27 05:34:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15282 states. [2018-10-27 05:34:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15282 states to 15282 states and 17609 transitions. [2018-10-27 05:34:44,065 INFO L78 Accepts]: Start accepts. Automaton has 15282 states and 17609 transitions. Word has length 704 [2018-10-27 05:34:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:34:44,066 INFO L481 AbstractCegarLoop]: Abstraction has 15282 states and 17609 transitions. [2018-10-27 05:34:44,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:34:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 15282 states and 17609 transitions. [2018-10-27 05:34:44,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2018-10-27 05:34:44,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:34:44,083 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 05:34:44,083 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:34:44,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:44,084 INFO L82 PathProgramCache]: Analyzing trace with hash -316914258, now seen corresponding path program 1 times [2018-10-27 05:34:44,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:34:44,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:44,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:44,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:34:44,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:34:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:45,025 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-27 05:34:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 485 proven. 1065 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2018-10-27 05:34:47,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:47,175 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:34:47,176 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 876 with the following transitions: [2018-10-27 05:34:47,176 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:34:47,181 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:34:47,182 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:34:52,826 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:34:52,826 INFO L272 AbstractInterpreter]: Visited 193 different actions 775 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 05:34:52,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:34:52,836 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:34:52,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:34:52,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 05:34:52,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:34:52,845 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:34:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:34:53,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:34:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 1555 proven. 2 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2018-10-27 05:34:54,339 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:34:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 479 proven. 335 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2018-10-27 05:34:56,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:34:56,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-10-27 05:34:56,032 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:34:56,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:34:56,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:34:56,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:34:56,034 INFO L87 Difference]: Start difference. First operand 15282 states and 17609 transitions. Second operand 18 states. [2018-10-27 05:34:58,067 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-27 05:34:59,237 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-27 05:34:59,721 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-27 05:34:59,874 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-27 05:35:00,160 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-27 05:35:04,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:35:04,178 INFO L93 Difference]: Finished difference Result 31808 states and 36911 transitions. [2018-10-27 05:35:04,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-27 05:35:04,179 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 875 [2018-10-27 05:35:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:35:04,232 INFO L225 Difference]: With dead ends: 31808 [2018-10-27 05:35:04,232 INFO L226 Difference]: Without dead ends: 16900 [2018-10-27 05:35:04,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1808 GetRequests, 1764 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=439, Invalid=1541, Unknown=0, NotChecked=0, Total=1980 [2018-10-27 05:35:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16900 states. [2018-10-27 05:35:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16900 to 16090. [2018-10-27 05:35:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16090 states. [2018-10-27 05:35:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16090 states to 16090 states and 18455 transitions. [2018-10-27 05:35:04,578 INFO L78 Accepts]: Start accepts. Automaton has 16090 states and 18455 transitions. Word has length 875 [2018-10-27 05:35:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:35:04,579 INFO L481 AbstractCegarLoop]: Abstraction has 16090 states and 18455 transitions. [2018-10-27 05:35:04,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 05:35:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 16090 states and 18455 transitions. [2018-10-27 05:35:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-10-27 05:35:04,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:35:04,601 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:35:04,602 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:35:04,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:35:04,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1486821560, now seen corresponding path program 1 times [2018-10-27 05:35:04,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:35:04,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:35:04,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:35:04,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:35:04,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:35:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:35:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1311 proven. 6 refuted. 0 times theorem prover too weak. 1448 trivial. 0 not checked. [2018-10-27 05:35:05,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:35:05,593 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:35:05,593 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 965 with the following transitions: [2018-10-27 05:35:05,594 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:35:05,597 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:35:05,597 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:35:11,297 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:35:11,297 INFO L272 AbstractInterpreter]: Visited 195 different actions 785 times. Merged at 12 different actions 41 times. Widened at 1 different actions 1 times. Found 15 fixpoints after 6 different actions. Largest state had 24 variables. [2018-10-27 05:35:11,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:35:11,304 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:35:11,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:35:11,304 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:35:11,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:35:11,318 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:35:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:35:11,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:35:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1311 proven. 6 refuted. 0 times theorem prover too weak. 1448 trivial. 0 not checked. [2018-10-27 05:35:12,567 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:35:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1311 proven. 86 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-10-27 05:35:13,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:35:13,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 13 [2018-10-27 05:35:13,940 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:35:13,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 05:35:13,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 05:35:13,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-27 05:35:13,943 INFO L87 Difference]: Start difference. First operand 16090 states and 18455 transitions. Second operand 8 states. [2018-10-27 05:35:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:35:17,830 INFO L93 Difference]: Finished difference Result 36734 states and 43058 transitions. [2018-10-27 05:35:17,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 05:35:17,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 964 [2018-10-27 05:35:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:35:17,890 INFO L225 Difference]: With dead ends: 36734 [2018-10-27 05:35:17,891 INFO L226 Difference]: Without dead ends: 20835 [2018-10-27 05:35:17,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1953 GetRequests, 1931 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2018-10-27 05:35:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20835 states. [2018-10-27 05:35:18,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20835 to 20270. [2018-10-27 05:35:18,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20270 states. [2018-10-27 05:35:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20270 states to 20270 states and 23643 transitions. [2018-10-27 05:35:18,297 INFO L78 Accepts]: Start accepts. Automaton has 20270 states and 23643 transitions. Word has length 964 [2018-10-27 05:35:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:35:18,298 INFO L481 AbstractCegarLoop]: Abstraction has 20270 states and 23643 transitions. [2018-10-27 05:35:18,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 05:35:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 20270 states and 23643 transitions. [2018-10-27 05:35:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2018-10-27 05:35:18,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:35:18,323 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:35:18,323 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:35:18,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:35:18,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1520633752, now seen corresponding path program 1 times [2018-10-27 05:35:18,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:35:18,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:35:18,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:35:18,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:35:18,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:35:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:35:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 903 proven. 1754 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2018-10-27 05:35:22,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:35:22,112 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:35:22,112 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1096 with the following transitions: [2018-10-27 05:35:22,112 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:35:22,116 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:35:22,116 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:35:27,740 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:35:27,741 INFO L272 AbstractInterpreter]: Visited 196 different actions 789 times. Merged at 12 different actions 41 times. Widened at 1 different actions 1 times. Found 16 fixpoints after 7 different actions. Largest state had 24 variables. [2018-10-27 05:35:27,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:35:27,747 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:35:27,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:35:27,747 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:35:27,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:35:27,755 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:35:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:35:28,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:35:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 1568 proven. 2 refuted. 0 times theorem prover too weak. 2056 trivial. 0 not checked. [2018-10-27 05:35:28,657 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:35:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3626 backedges. 937 proven. 86 refuted. 0 times theorem prover too weak. 2603 trivial. 0 not checked. [2018-10-27 05:35:29,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:35:29,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 19 [2018-10-27 05:35:29,862 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:35:29,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:35:29,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:35:29,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:35:29,865 INFO L87 Difference]: Start difference. First operand 20270 states and 23643 transitions. Second operand 18 states. [2018-10-27 05:35:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:35:36,459 INFO L93 Difference]: Finished difference Result 38982 states and 45915 transitions. [2018-10-27 05:35:36,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-27 05:35:36,460 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1095 [2018-10-27 05:35:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:35:36,515 INFO L225 Difference]: With dead ends: 38982 [2018-10-27 05:35:36,515 INFO L226 Difference]: Without dead ends: 18903 [2018-10-27 05:35:36,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2284 GetRequests, 2224 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=622, Invalid=2684, Unknown=0, NotChecked=0, Total=3306 [2018-10-27 05:35:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2018-10-27 05:35:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18492. [2018-10-27 05:35:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18492 states. [2018-10-27 05:35:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18492 states to 18492 states and 20684 transitions. [2018-10-27 05:35:36,897 INFO L78 Accepts]: Start accepts. Automaton has 18492 states and 20684 transitions. Word has length 1095 [2018-10-27 05:35:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:35:36,899 INFO L481 AbstractCegarLoop]: Abstraction has 18492 states and 20684 transitions. [2018-10-27 05:35:36,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 05:35:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 18492 states and 20684 transitions. [2018-10-27 05:35:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1539 [2018-10-27 05:35:36,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:35:36,939 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:35:36,939 INFO L424 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:35:36,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:35:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash 154010516, now seen corresponding path program 1 times [2018-10-27 05:35:36,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:35:36,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:35:36,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:35:36,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:35:36,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:35:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:35:38,719 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 4 Received shutdown request... [2018-10-27 05:35:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7061 backedges. 1312 proven. 4208 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2018-10-27 05:35:41,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:35:41,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:35:41,693 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1539 with the following transitions: [2018-10-27 05:35:41,693 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:35:41,696 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:35:41,696 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:35:41,697 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 05:35:41,698 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 05:35:41,698 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 05:35:41,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:35:41,698 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:35:41,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:35:41,710 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:35:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:35:42,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:35:42,127 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 05:35:42,329 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:35:42,329 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:35:42,333 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:35:42,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:35:42 BoogieIcfgContainer [2018-10-27 05:35:42,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:35:42,335 INFO L168 Benchmark]: Toolchain (without parser) took 229636.75 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.3 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-27 05:35:42,336 INFO L168 Benchmark]: CDTParser took 0.22 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 05:35:42,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 908.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 05:35:42,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 236.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:35:42,340 INFO L168 Benchmark]: Boogie Preprocessor took 127.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-27 05:35:42,341 INFO L168 Benchmark]: RCFGBuilder took 3414.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:35:42,342 INFO L168 Benchmark]: TraceAbstraction took 224943.01 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 792.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-27 05:35:42,352 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 908.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 236.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3414.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224943.01 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 792.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was analyzing trace of length 1539 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 21 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 224.8s OverallTime, 15 OverallIterations, 13 TraceHistogramMax, 135.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1893 SDtfs, 31795 SDslu, 3286 SDs, 0 SdLazy, 36863 SolverSat, 6495 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 13166 GetRequests, 12826 SyntacticMatches, 15 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3117 ImplicationChecksByTransitivity, 16.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20270occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 43.3s AbstIntTime, 12 AbstIntIterations, 3 AbstIntStrong, 0.9971429443135702 AbsIntWeakeningRatio, 0.09640831758034027 AbsIntAvgWeakeningVarsNumRemoved, 16.261814744801512 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 3740 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 23.0s InterpolantComputationTime, 13035 NumberOfCodeBlocks, 13035 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 18837 ConstructedInterpolants, 0 QuantifiedInterpolants, 67636010 SizeOfPredicates, 26 NumberOfNonLiveVariables, 8591 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 36883/42927 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown