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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:19:29,463 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:19:29,466 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:19:29,480 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:19:29,480 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:19:29,481 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:19:29,483 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:19:29,484 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:19:29,486 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:19:29,487 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:19:29,488 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:19:29,488 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:19:29,489 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:19:29,490 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:19:29,491 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:19:29,492 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:19:29,493 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:19:29,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:19:29,497 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:19:29,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:19:29,500 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:19:29,501 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:19:29,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:19:29,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:19:29,508 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:19:29,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:19:29,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:19:29,511 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:19:29,514 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:19:29,516 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:19:29,516 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:19:29,516 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:19:29,521 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:19:29,540 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:19:29,540 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:19:29,541 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:19:29,541 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:19:29,542 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:19:29,542 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:19:29,542 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:19:29,543 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:19:29,543 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:19:29,543 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:19:29,543 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:19:29,543 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:19:29,544 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:19:29,544 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:19:29,544 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:19:29,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:19:29,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:19:29,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:19:29,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:19:29,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:19:29,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:19:29,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:19:29,546 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:19:29,546 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:19:29,546 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:19:29,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:19:29,547 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:19:29,547 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:19:29,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:19:29,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:19:29,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:19:29,624 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:19:29,625 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:19:29,626 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-10-23 20:19:29,695 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/410a722f7/b5c345f9949f4f59967421f888da96f8/FLAG12e42ca1d [2018-10-23 20:19:30,507 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:19:30,508 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-10-23 20:19:30,541 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/410a722f7/b5c345f9949f4f59967421f888da96f8/FLAG12e42ca1d [2018-10-23 20:19:30,563 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/410a722f7/b5c345f9949f4f59967421f888da96f8 [2018-10-23 20:19:30,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:19:30,580 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:19:30,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:19:30,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:19:30,586 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:19:30,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:30" (1/1) ... [2018-10-23 20:19:30,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1a2d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:30, skipping insertion in model container [2018-10-23 20:19:30,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:30" (1/1) ... [2018-10-23 20:19:30,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:19:30,798 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:19:32,212 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:19:32,223 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:19:32,962 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:19:33,003 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:19:33,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33 WrapperNode [2018-10-23 20:19:33,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:19:33,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:19:33,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:19:33,005 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:19:33,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:33,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:33,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:19:33,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:19:33,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:19:33,869 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:19:33,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:33,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:33,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:33,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:34,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:34,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:34,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (1/1) ... [2018-10-23 20:19:34,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:19:34,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:19:34,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:19:34,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:19:34,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (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 [2018-10-23 20:19:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:19:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:19:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:19:50,702 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:19:50,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:50 BoogieIcfgContainer [2018-10-23 20:19:50,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:19:50,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:19:50,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:19:50,709 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:19:50,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:19:30" (1/3) ... [2018-10-23 20:19:50,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edbb8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:50, skipping insertion in model container [2018-10-23 20:19:50,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:33" (2/3) ... [2018-10-23 20:19:50,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edbb8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:50, skipping insertion in model container [2018-10-23 20:19:50,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:50" (3/3) ... [2018-10-23 20:19:50,714 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label33_true-unreach-call.c [2018-10-23 20:19:50,724 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:19:50,735 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:19:50,753 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:19:50,802 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:19:50,803 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:19:50,803 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:19:50,804 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:19:50,804 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:19:50,804 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:19:50,804 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:19:50,804 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:19:50,804 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:19:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:19:50,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-23 20:19:50,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:50,866 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:19:50,871 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:50,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1502078046, now seen corresponding path program 1 times [2018-10-23 20:19:50,880 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:50,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:50,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:50,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:50,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:19:51,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:51,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:19:51,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:51,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:51,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:51,468 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:20:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:05,977 INFO L93 Difference]: Finished difference Result 3870 states and 7276 transitions. [2018-10-23 20:20:05,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:20:05,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-23 20:20:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:06,026 INFO L225 Difference]: With dead ends: 3870 [2018-10-23 20:20:06,026 INFO L226 Difference]: Without dead ends: 2764 [2018-10-23 20:20:06,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2018-10-23 20:20:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2736. [2018-10-23 20:20:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-23 20:20:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4487 transitions. [2018-10-23 20:20:06,217 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4487 transitions. Word has length 36 [2018-10-23 20:20:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:06,217 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4487 transitions. [2018-10-23 20:20:06,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:20:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4487 transitions. [2018-10-23 20:20:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-23 20:20:06,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:06,229 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:20:06,229 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:06,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1804251206, now seen corresponding path program 1 times [2018-10-23 20:20:06,230 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:06,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:06,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:06,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:06,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:06,734 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:20:07,682 WARN L179 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:20:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:20:07,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:07,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:07,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:07,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:07,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:07,798 INFO L87 Difference]: Start difference. First operand 2736 states and 4487 transitions. Second operand 5 states. [2018-10-23 20:20:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:25,765 INFO L93 Difference]: Finished difference Result 9428 states and 14930 transitions. [2018-10-23 20:20:25,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:20:25,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2018-10-23 20:20:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:25,800 INFO L225 Difference]: With dead ends: 9428 [2018-10-23 20:20:25,800 INFO L226 Difference]: Without dead ends: 6694 [2018-10-23 20:20:25,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:20:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2018-10-23 20:20:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 6693. [2018-10-23 20:20:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6693 states. [2018-10-23 20:20:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6693 states to 6693 states and 9417 transitions. [2018-10-23 20:20:25,929 INFO L78 Accepts]: Start accepts. Automaton has 6693 states and 9417 transitions. Word has length 142 [2018-10-23 20:20:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:25,929 INFO L481 AbstractCegarLoop]: Abstraction has 6693 states and 9417 transitions. [2018-10-23 20:20:25,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:20:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6693 states and 9417 transitions. [2018-10-23 20:20:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-23 20:20:25,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:25,935 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:20:25,935 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:25,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:25,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1951560992, now seen corresponding path program 1 times [2018-10-23 20:20:25,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:25,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:25,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:25,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:25,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:20:26,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:26,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:26,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:20:26,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:20:26,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:26,199 INFO L87 Difference]: Start difference. First operand 6693 states and 9417 transitions. Second operand 4 states. [2018-10-23 20:20:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:37,513 INFO L93 Difference]: Finished difference Result 15792 states and 23310 transitions. [2018-10-23 20:20:37,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:20:37,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2018-10-23 20:20:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:37,563 INFO L225 Difference]: With dead ends: 15792 [2018-10-23 20:20:37,563 INFO L226 Difference]: Without dead ends: 9889 [2018-10-23 20:20:37,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9889 states. [2018-10-23 20:20:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9889 to 9863. [2018-10-23 20:20:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9863 states. [2018-10-23 20:20:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9863 states to 9863 states and 13541 transitions. [2018-10-23 20:20:37,761 INFO L78 Accepts]: Start accepts. Automaton has 9863 states and 13541 transitions. Word has length 212 [2018-10-23 20:20:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:37,762 INFO L481 AbstractCegarLoop]: Abstraction has 9863 states and 13541 transitions. [2018-10-23 20:20:37,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:20:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 9863 states and 13541 transitions. [2018-10-23 20:20:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-23 20:20:37,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:37,765 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:20:37,766 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:37,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:37,766 INFO L82 PathProgramCache]: Analyzing trace with hash -818940230, now seen corresponding path program 1 times [2018-10-23 20:20:37,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:37,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:37,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:37,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:37,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:20:38,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:38,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:38,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:38,206 INFO L87 Difference]: Start difference. First operand 9863 states and 13541 transitions. Second operand 5 states. [2018-10-23 20:21:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:00,974 INFO L93 Difference]: Finished difference Result 43673 states and 61710 transitions. [2018-10-23 20:21:00,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:21:00,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2018-10-23 20:21:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:01,071 INFO L225 Difference]: With dead ends: 43673 [2018-10-23 20:21:01,071 INFO L226 Difference]: Without dead ends: 34600 [2018-10-23 20:21:01,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:21:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34600 states. [2018-10-23 20:21:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34600 to 34418. [2018-10-23 20:21:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34418 states. [2018-10-23 20:21:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34418 states to 34418 states and 45210 transitions. [2018-10-23 20:21:01,632 INFO L78 Accepts]: Start accepts. Automaton has 34418 states and 45210 transitions. Word has length 219 [2018-10-23 20:21:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:01,633 INFO L481 AbstractCegarLoop]: Abstraction has 34418 states and 45210 transitions. [2018-10-23 20:21:01,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:21:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 34418 states and 45210 transitions. [2018-10-23 20:21:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-23 20:21:01,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:01,641 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:21:01,641 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:01,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:01,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1029542179, now seen corresponding path program 1 times [2018-10-23 20:21:01,642 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:01,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:01,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:01,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:01,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-23 20:21:02,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:21:02,081 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-10-23 20:21:02,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:02,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:21:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:02,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:21:02,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:21:02,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:02,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:02,383 INFO L87 Difference]: Start difference. First operand 34418 states and 45210 transitions. Second operand 4 states. [2018-10-23 20:21:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:18,087 INFO L93 Difference]: Finished difference Result 129564 states and 171627 transitions. [2018-10-23 20:21:18,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:18,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2018-10-23 20:21:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:18,285 INFO L225 Difference]: With dead ends: 129564 [2018-10-23 20:21:18,286 INFO L226 Difference]: Without dead ends: 95936 [2018-10-23 20:21:18,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95936 states. [2018-10-23 20:21:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95936 to 65145. [2018-10-23 20:21:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65145 states. [2018-10-23 20:21:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65145 states to 65145 states and 80870 transitions. [2018-10-23 20:21:19,410 INFO L78 Accepts]: Start accepts. Automaton has 65145 states and 80870 transitions. Word has length 242 [2018-10-23 20:21:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:19,411 INFO L481 AbstractCegarLoop]: Abstraction has 65145 states and 80870 transitions. [2018-10-23 20:21:19,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 65145 states and 80870 transitions. [2018-10-23 20:21:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-23 20:21:19,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:19,420 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:21:19,420 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:19,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:19,421 INFO L82 PathProgramCache]: Analyzing trace with hash -245088399, now seen corresponding path program 1 times [2018-10-23 20:21:19,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:19,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:19,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:19,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:19,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-23 20:21:20,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:21:20,183 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-10-23 20:21:20,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:20,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:21:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:20,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:21:20,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:21:20,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:20,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:20,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:20,366 INFO L87 Difference]: Start difference. First operand 65145 states and 80870 transitions. Second operand 4 states. [2018-10-23 20:21:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:31,188 INFO L93 Difference]: Finished difference Result 217813 states and 269872 transitions. [2018-10-23 20:21:31,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:31,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2018-10-23 20:21:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:31,388 INFO L225 Difference]: With dead ends: 217813 [2018-10-23 20:21:31,388 INFO L226 Difference]: Without dead ends: 153458 [2018-10-23 20:21:31,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:31,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153458 states. [2018-10-23 20:21:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153458 to 116363. [2018-10-23 20:21:33,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116363 states. [2018-10-23 20:21:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116363 states to 116363 states and 139926 transitions. [2018-10-23 20:21:33,341 INFO L78 Accepts]: Start accepts. Automaton has 116363 states and 139926 transitions. Word has length 248 [2018-10-23 20:21:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:33,342 INFO L481 AbstractCegarLoop]: Abstraction has 116363 states and 139926 transitions. [2018-10-23 20:21:33,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:33,342 INFO L276 IsEmpty]: Start isEmpty. Operand 116363 states and 139926 transitions. [2018-10-23 20:21:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-23 20:21:33,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:33,354 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:21:33,354 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:33,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:33,355 INFO L82 PathProgramCache]: Analyzing trace with hash 48914312, now seen corresponding path program 1 times [2018-10-23 20:21:33,355 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:33,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:33,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:33,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:33,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:33,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:33,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:21:33,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:21:33,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:21:33,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:21:33,590 INFO L87 Difference]: Start difference. First operand 116363 states and 139926 transitions. Second operand 3 states. [2018-10-23 20:21:39,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:39,867 INFO L93 Difference]: Finished difference Result 232705 states and 279679 transitions. [2018-10-23 20:21:39,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:21:39,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 277 [2018-10-23 20:21:39,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:40,021 INFO L225 Difference]: With dead ends: 232705 [2018-10-23 20:21:40,021 INFO L226 Difference]: Without dead ends: 117132 [2018-10-23 20:21:41,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:21:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117132 states. [2018-10-23 20:21:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117132 to 114762. [2018-10-23 20:21:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114762 states. [2018-10-23 20:21:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114762 states to 114762 states and 130187 transitions. [2018-10-23 20:21:42,054 INFO L78 Accepts]: Start accepts. Automaton has 114762 states and 130187 transitions. Word has length 277 [2018-10-23 20:21:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:42,055 INFO L481 AbstractCegarLoop]: Abstraction has 114762 states and 130187 transitions. [2018-10-23 20:21:42,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:21:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 114762 states and 130187 transitions. [2018-10-23 20:21:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-23 20:21:42,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:42,083 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:21:42,083 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:42,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:42,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2081388679, now seen corresponding path program 1 times [2018-10-23 20:21:42,084 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:42,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:42,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:42,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:42,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-23 20:21:42,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:42,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:21:42,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:21:42,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:21:42,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:21:42,532 INFO L87 Difference]: Start difference. First operand 114762 states and 130187 transitions. Second operand 3 states. [2018-10-23 20:21:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:51,386 INFO L93 Difference]: Finished difference Result 305954 states and 347425 transitions. [2018-10-23 20:21:51,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:21:51,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 392 [2018-10-23 20:21:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:51,660 INFO L225 Difference]: With dead ends: 305954 [2018-10-23 20:21:51,660 INFO L226 Difference]: Without dead ends: 191982 [2018-10-23 20:21:51,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:21:51,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191982 states. [2018-10-23 20:21:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191982 to 191981. [2018-10-23 20:21:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191981 states. [2018-10-23 20:21:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191981 states to 191981 states and 213227 transitions. [2018-10-23 20:21:53,651 INFO L78 Accepts]: Start accepts. Automaton has 191981 states and 213227 transitions. Word has length 392 [2018-10-23 20:21:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:53,652 INFO L481 AbstractCegarLoop]: Abstraction has 191981 states and 213227 transitions. [2018-10-23 20:21:53,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:21:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 191981 states and 213227 transitions. [2018-10-23 20:21:53,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-10-23 20:21:53,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:53,681 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:21:53,681 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:53,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:53,682 INFO L82 PathProgramCache]: Analyzing trace with hash -259977617, now seen corresponding path program 1 times [2018-10-23 20:21:53,682 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:53,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:53,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:53,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:53,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-23 20:21:54,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:54,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:21:54,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:54,087 INFO L87 Difference]: Start difference. First operand 191981 states and 213227 transitions. Second operand 4 states. [2018-10-23 20:22:04,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:04,071 INFO L93 Difference]: Finished difference Result 393407 states and 436904 transitions. [2018-10-23 20:22:04,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:04,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 462 [2018-10-23 20:22:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:04,366 INFO L225 Difference]: With dead ends: 393407 [2018-10-23 20:22:04,367 INFO L226 Difference]: Without dead ends: 195890 [2018-10-23 20:22:04,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195890 states. [2018-10-23 20:22:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195890 to 180120. [2018-10-23 20:22:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180120 states. [2018-10-23 20:22:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180120 states to 180120 states and 193018 transitions. [2018-10-23 20:22:07,455 INFO L78 Accepts]: Start accepts. Automaton has 180120 states and 193018 transitions. Word has length 462 [2018-10-23 20:22:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:07,456 INFO L481 AbstractCegarLoop]: Abstraction has 180120 states and 193018 transitions. [2018-10-23 20:22:07,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 180120 states and 193018 transitions. [2018-10-23 20:22:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-10-23 20:22:07,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:07,474 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:22:07,474 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:07,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2050105747, now seen corresponding path program 1 times [2018-10-23 20:22:07,474 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:07,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:07,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:07,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:07,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:22:08,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:08,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:22:08,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:08,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:08,187 INFO L87 Difference]: Start difference. First operand 180120 states and 193018 transitions. Second operand 4 states. [2018-10-23 20:22:25,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:25,700 INFO L93 Difference]: Finished difference Result 360256 states and 386062 transitions. [2018-10-23 20:22:25,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:25,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 520 [2018-10-23 20:22:25,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:25,883 INFO L225 Difference]: With dead ends: 360256 [2018-10-23 20:22:25,883 INFO L226 Difference]: Without dead ends: 175395 [2018-10-23 20:22:25,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175395 states. [2018-10-23 20:22:27,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175395 to 166700. [2018-10-23 20:22:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166700 states. [2018-10-23 20:22:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166700 states to 166700 states and 175484 transitions. [2018-10-23 20:22:27,506 INFO L78 Accepts]: Start accepts. Automaton has 166700 states and 175484 transitions. Word has length 520 [2018-10-23 20:22:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:27,507 INFO L481 AbstractCegarLoop]: Abstraction has 166700 states and 175484 transitions. [2018-10-23 20:22:27,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 166700 states and 175484 transitions. [2018-10-23 20:22:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-10-23 20:22:27,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:27,525 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2018-10-23 20:22:27,527 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:27,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:27,527 INFO L82 PathProgramCache]: Analyzing trace with hash -768125364, now seen corresponding path program 1 times [2018-10-23 20:22:27,527 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:27,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:27,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:27,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:27,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-10-23 20:22:28,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:28,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:22:28,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:28,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:28,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:28,015 INFO L87 Difference]: Start difference. First operand 166700 states and 175484 transitions. Second operand 4 states. [2018-10-23 20:22:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:38,001 INFO L93 Difference]: Finished difference Result 331857 states and 349401 transitions. [2018-10-23 20:22:38,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:38,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 530 [2018-10-23 20:22:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:38,199 INFO L225 Difference]: With dead ends: 331857 [2018-10-23 20:22:38,200 INFO L226 Difference]: Without dead ends: 161198 [2018-10-23 20:22:38,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161198 states. [2018-10-23 20:22:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161198 to 159581. [2018-10-23 20:22:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159581 states. [2018-10-23 20:22:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159581 states to 159581 states and 165831 transitions. [2018-10-23 20:22:40,079 INFO L78 Accepts]: Start accepts. Automaton has 159581 states and 165831 transitions. Word has length 530 [2018-10-23 20:22:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:40,079 INFO L481 AbstractCegarLoop]: Abstraction has 159581 states and 165831 transitions. [2018-10-23 20:22:40,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 159581 states and 165831 transitions. [2018-10-23 20:22:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2018-10-23 20:22:40,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:40,162 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:22:40,162 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:40,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:40,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1621587229, now seen corresponding path program 1 times [2018-10-23 20:22:40,163 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:40,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:40,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:40,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:40,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:40,619 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 20:22:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-23 20:22:41,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:41,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:22:41,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:41,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:41,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:41,615 INFO L87 Difference]: Start difference. First operand 159581 states and 165831 transitions. Second operand 4 states. [2018-10-23 20:22:53,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:53,169 INFO L93 Difference]: Finished difference Result 327041 states and 339758 transitions. [2018-10-23 20:22:53,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:53,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1012 [2018-10-23 20:22:53,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:53,336 INFO L225 Difference]: With dead ends: 327041 [2018-10-23 20:22:53,336 INFO L226 Difference]: Without dead ends: 155609 [2018-10-23 20:22:53,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:53,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155609 states. [2018-10-23 20:22:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155609 to 147728. [2018-10-23 20:22:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147728 states. [2018-10-23 20:22:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147728 states to 147728 states and 153100 transitions. [2018-10-23 20:22:55,047 INFO L78 Accepts]: Start accepts. Automaton has 147728 states and 153100 transitions. Word has length 1012 [2018-10-23 20:22:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:55,048 INFO L481 AbstractCegarLoop]: Abstraction has 147728 states and 153100 transitions. [2018-10-23 20:22:55,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 147728 states and 153100 transitions. [2018-10-23 20:22:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2018-10-23 20:22:55,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:55,112 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:22:55,112 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:55,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:55,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1108830039, now seen corresponding path program 1 times [2018-10-23 20:22:55,113 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:55,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:55,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:55,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:55,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 335 proven. 291 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-23 20:23:00,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:23:00,325 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-10-23 20:23:00,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:00,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:23:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:23:02,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:23:02,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-10-23 20:23:02,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:23:02,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:23:02,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:23:02,302 INFO L87 Difference]: Start difference. First operand 147728 states and 153100 transitions. Second operand 11 states. Received shutdown request... [2018-10-23 20:23:19,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 20:23:19,040 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:23:19,045 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:23:19,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:23:19 BoogieIcfgContainer [2018-10-23 20:23:19,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:23:19,046 INFO L168 Benchmark]: Toolchain (without parser) took 228467.08 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -464.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 20:23:19,047 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-10-23 20:23:19,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2423.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:23:19,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 863.76 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 826.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:23:19,049 INFO L168 Benchmark]: Boogie Preprocessor took 513.83 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.5 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:23:19,050 INFO L168 Benchmark]: RCFGBuilder took 16320.37 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 237.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.4 MB). Peak memory consumption was 589.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:23:19,051 INFO L168 Benchmark]: TraceAbstraction took 208340.07 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 186.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 20:23:19,056 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2423.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 863.76 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 826.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 513.83 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 81.5 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16320.37 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 237.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.4 MB). Peak memory consumption was 589.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208340.07 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 186.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (147728states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (149935 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.2s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 177.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11542 SDtfs, 33736 SDslu, 3682 SDs, 0 SdLazy, 65319 SolverSat, 15196 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 143.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1595 GetRequests, 1544 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191981occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 104457 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 6852 NumberOfCodeBlocks, 6852 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6836 ConstructedInterpolants, 0 QuantifiedInterpolants, 28170180 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1881 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 5689/5988 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown