java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:15:11,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:15:11,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:15:11,373 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:15:11,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:15:11,374 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:15:11,375 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:15:11,378 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:15:11,380 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:15:11,383 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:15:11,385 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:15:11,386 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:15:11,387 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:15:11,388 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:15:11,389 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:15:11,398 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:15:11,399 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:15:11,403 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:15:11,405 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:15:11,407 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:15:11,408 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:15:11,412 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:15:11,415 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:15:11,415 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:15:11,416 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:15:11,416 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:15:11,418 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:15:11,419 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:15:11,419 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:15:11,423 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:15:11,423 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:15:11,424 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:15:11,428 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:15:11,459 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:15:11,459 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:15:11,460 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:15:11,461 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:15:11,461 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:15:11,461 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:15:11,465 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:15:11,465 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:15:11,465 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:15:11,465 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:15:11,466 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:15:11,466 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:15:11,466 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:15:11,466 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:15:11,466 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:15:11,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:15:11,468 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:15:11,468 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:15:11,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:15:11,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:15:11,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:15:11,469 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:15:11,469 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:15:11,470 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:15:11,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:15:11,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:15:11,470 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:15:11,470 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:15:11,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:15:11,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:15:11,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:15:11,534 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:15:11,534 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:15:11,535 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02_true-unreach-call.c [2018-11-06 21:15:11,592 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466d0f785/b1eaea603ab5421fa044bcba3d0787d7/FLAG061517e23 [2018-11-06 21:15:12,386 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:15:12,387 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label02_true-unreach-call.c [2018-11-06 21:15:12,436 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466d0f785/b1eaea603ab5421fa044bcba3d0787d7/FLAG061517e23 [2018-11-06 21:15:12,458 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466d0f785/b1eaea603ab5421fa044bcba3d0787d7 [2018-11-06 21:15:12,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:15:12,473 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:15:12,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:15:12,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:15:12,478 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:15:12,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:12" (1/1) ... [2018-11-06 21:15:12,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:12, skipping insertion in model container [2018-11-06 21:15:12,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:12" (1/1) ... [2018-11-06 21:15:12,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:15:12,683 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:15:14,096 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:15:14,105 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:15:14,936 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:15:14,975 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:15:14,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14 WrapperNode [2018-11-06 21:15:14,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:15:14,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:15:14,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:15:14,978 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:15:14,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:15,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:15,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:15:15,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:15:15,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:15:15,780 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:15:15,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:15,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:15,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:15,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:16,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:16,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:16,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... [2018-11-06 21:15:16,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:15:16,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:15:16,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:15:16,373 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:15:16,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:15:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:15:16,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:15:16,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:15:29,177 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:15:29,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:29 BoogieIcfgContainer [2018-11-06 21:15:29,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:15:29,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:15:29,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:15:29,182 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:15:29,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:15:12" (1/3) ... [2018-11-06 21:15:29,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebcb4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:15:29, skipping insertion in model container [2018-11-06 21:15:29,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:14" (2/3) ... [2018-11-06 21:15:29,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebcb4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:15:29, skipping insertion in model container [2018-11-06 21:15:29,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:29" (3/3) ... [2018-11-06 21:15:29,186 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label02_true-unreach-call.c [2018-11-06 21:15:29,196 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:15:29,208 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:15:29,225 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:15:29,269 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:15:29,270 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:15:29,270 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:15:29,270 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:15:29,270 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:15:29,270 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:15:29,270 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:15:29,271 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:15:29,271 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:15:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-11-06 21:15:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-06 21:15:29,333 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:15:29,334 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:15:29,340 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:15:29,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:15:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash 935177138, now seen corresponding path program 1 times [2018-11-06 21:15:29,348 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:15:29,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:15:29,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:29,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:29,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:15:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:15:29,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:15:29,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:15:29,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:15:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:15:29,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:15:29,830 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-11-06 21:15:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:15:42,919 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-11-06 21:15:42,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:15:42,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-11-06 21:15:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:15:42,966 INFO L225 Difference]: With dead ends: 3896 [2018-11-06 21:15:42,966 INFO L226 Difference]: Without dead ends: 2790 [2018-11-06 21:15:42,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:15:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-11-06 21:15:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-11-06 21:15:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-11-06 21:15:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-11-06 21:15:43,123 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 40 [2018-11-06 21:15:43,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:15:43,124 INFO L480 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-11-06 21:15:43,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:15:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-11-06 21:15:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-06 21:15:43,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:15:43,129 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:15:43,130 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:15:43,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:15:43,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1567592794, now seen corresponding path program 1 times [2018-11-06 21:15:43,130 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:15:43,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:15:43,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:43,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:43,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:15:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:15:43,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:15:43,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:15:43,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:15:43,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:15:43,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:15:43,918 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-11-06 21:15:44,177 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-06 21:15:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:15:59,544 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-11-06 21:15:59,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:15:59,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-11-06 21:15:59,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:15:59,571 INFO L225 Difference]: With dead ends: 7061 [2018-11-06 21:15:59,571 INFO L226 Difference]: Without dead ends: 5118 [2018-11-06 21:15:59,575 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:15:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-11-06 21:15:59,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-11-06 21:15:59,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-11-06 21:15:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-11-06 21:15:59,677 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 106 [2018-11-06 21:15:59,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:15:59,677 INFO L480 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-11-06 21:15:59,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:15:59,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-11-06 21:15:59,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-06 21:15:59,681 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:15:59,682 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:15:59,682 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:15:59,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:15:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash 208041757, now seen corresponding path program 1 times [2018-11-06 21:15:59,683 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:15:59,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:15:59,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:59,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:59,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:16:00,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:16:00,042 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:16:00,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:00,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:16:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:16:00,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:16:00,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-11-06 21:16:00,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:16:00,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:16:00,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:00,242 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-11-06 21:16:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:16:15,212 INFO L93 Difference]: Finished difference Result 19968 states and 31665 transitions. [2018-11-06 21:16:15,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:16:15,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2018-11-06 21:16:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:16:15,288 INFO L225 Difference]: With dead ends: 19968 [2018-11-06 21:16:15,288 INFO L226 Difference]: Without dead ends: 15641 [2018-11-06 21:16:15,298 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15641 states. [2018-11-06 21:16:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15641 to 15451. [2018-11-06 21:16:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15451 states. [2018-11-06 21:16:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15451 states to 15451 states and 22599 transitions. [2018-11-06 21:16:15,583 INFO L78 Accepts]: Start accepts. Automaton has 15451 states and 22599 transitions. Word has length 166 [2018-11-06 21:16:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:16:15,584 INFO L480 AbstractCegarLoop]: Abstraction has 15451 states and 22599 transitions. [2018-11-06 21:16:15,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:16:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 15451 states and 22599 transitions. [2018-11-06 21:16:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-06 21:16:15,591 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:15,592 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, 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:16:15,592 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:15,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:15,592 INFO L82 PathProgramCache]: Analyzing trace with hash 869677336, now seen corresponding path program 1 times [2018-11-06 21:16:15,593 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:15,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:15,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:15,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:15,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-06 21:16:16,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:16:16,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:16:16,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:16:16,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:16:16,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:16,018 INFO L87 Difference]: Start difference. First operand 15451 states and 22599 transitions. Second operand 4 states. [2018-11-06 21:16:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:16:24,696 INFO L93 Difference]: Finished difference Result 50596 states and 75924 transitions. [2018-11-06 21:16:24,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:16:24,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2018-11-06 21:16:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:16:24,774 INFO L225 Difference]: With dead ends: 50596 [2018-11-06 21:16:24,775 INFO L226 Difference]: Without dead ends: 35935 [2018-11-06 21:16:24,797 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35935 states. [2018-11-06 21:16:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35935 to 33568. [2018-11-06 21:16:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33568 states. [2018-11-06 21:16:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33568 states to 33568 states and 45046 transitions. [2018-11-06 21:16:25,276 INFO L78 Accepts]: Start accepts. Automaton has 33568 states and 45046 transitions. Word has length 253 [2018-11-06 21:16:25,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:16:25,277 INFO L480 AbstractCegarLoop]: Abstraction has 33568 states and 45046 transitions. [2018-11-06 21:16:25,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:16:25,277 INFO L276 IsEmpty]: Start isEmpty. Operand 33568 states and 45046 transitions. [2018-11-06 21:16:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-06 21:16:25,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:25,292 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, 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, 2, 2, 2, 2, 2, 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] [2018-11-06 21:16:25,293 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:25,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:25,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1790236453, now seen corresponding path program 1 times [2018-11-06 21:16:25,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:25,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:25,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:25,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:25,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 239 proven. 66 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-06 21:16:25,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:16:25,743 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:16:25,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:25,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:16:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-06 21:16:26,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:16:26,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 21:16:26,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:16:26,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:16:26,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:26,113 INFO L87 Difference]: Start difference. First operand 33568 states and 45046 transitions. Second operand 5 states. [2018-11-06 21:16:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:16:40,649 INFO L93 Difference]: Finished difference Result 119196 states and 160807 transitions. [2018-11-06 21:16:40,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:16:40,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2018-11-06 21:16:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:16:40,791 INFO L225 Difference]: With dead ends: 119196 [2018-11-06 21:16:40,791 INFO L226 Difference]: Without dead ends: 86418 [2018-11-06 21:16:40,844 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:16:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86418 states. [2018-11-06 21:16:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86418 to 70600. [2018-11-06 21:16:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70600 states. [2018-11-06 21:16:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70600 states to 70600 states and 87935 transitions. [2018-11-06 21:16:42,054 INFO L78 Accepts]: Start accepts. Automaton has 70600 states and 87935 transitions. Word has length 335 [2018-11-06 21:16:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:16:42,055 INFO L480 AbstractCegarLoop]: Abstraction has 70600 states and 87935 transitions. [2018-11-06 21:16:42,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:16:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 70600 states and 87935 transitions. [2018-11-06 21:16:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-06 21:16:42,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:42,071 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:16:42,071 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:42,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:42,071 INFO L82 PathProgramCache]: Analyzing trace with hash 612778115, now seen corresponding path program 1 times [2018-11-06 21:16:42,072 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:42,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:42,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:42,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:42,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:16:42,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:16:42,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:16:42,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:16:42,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:16:42,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:42,663 INFO L87 Difference]: Start difference. First operand 70600 states and 87935 transitions. Second operand 4 states. [2018-11-06 21:16:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:16:53,272 INFO L93 Difference]: Finished difference Result 227125 states and 282916 transitions. [2018-11-06 21:16:53,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:16:53,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 347 [2018-11-06 21:16:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:16:53,457 INFO L225 Difference]: With dead ends: 227125 [2018-11-06 21:16:53,457 INFO L226 Difference]: Without dead ends: 157315 [2018-11-06 21:16:53,513 INFO L604 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 [2018-11-06 21:16:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157315 states. [2018-11-06 21:16:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157315 to 156494. [2018-11-06 21:16:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156494 states. [2018-11-06 21:16:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156494 states to 156494 states and 184899 transitions. [2018-11-06 21:16:54,972 INFO L78 Accepts]: Start accepts. Automaton has 156494 states and 184899 transitions. Word has length 347 [2018-11-06 21:16:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:16:54,972 INFO L480 AbstractCegarLoop]: Abstraction has 156494 states and 184899 transitions. [2018-11-06 21:16:54,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:16:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 156494 states and 184899 transitions. [2018-11-06 21:16:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-11-06 21:16:54,996 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:16:54,996 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, 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, 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] [2018-11-06 21:16:54,996 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:16:54,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:16:54,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1478697781, now seen corresponding path program 1 times [2018-11-06 21:16:54,997 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:16:54,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:16:54,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:54,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:16:54,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:16:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:16:55,430 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 21:16:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-06 21:16:55,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:16:55,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:16:55,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:16:55,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:16:55,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:16:55,597 INFO L87 Difference]: Start difference. First operand 156494 states and 184899 transitions. Second operand 4 states. [2018-11-06 21:17:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:04,000 INFO L93 Difference]: Finished difference Result 330321 states and 389388 transitions. [2018-11-06 21:17:04,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:17:04,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 421 [2018-11-06 21:17:04,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:04,181 INFO L225 Difference]: With dead ends: 330321 [2018-11-06 21:17:04,181 INFO L226 Difference]: Without dead ends: 154051 [2018-11-06 21:17:04,270 INFO L604 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 [2018-11-06 21:17:04,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154051 states. [2018-11-06 21:17:05,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154051 to 138287. [2018-11-06 21:17:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138287 states. [2018-11-06 21:17:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138287 states to 138287 states and 160194 transitions. [2018-11-06 21:17:05,606 INFO L78 Accepts]: Start accepts. Automaton has 138287 states and 160194 transitions. Word has length 421 [2018-11-06 21:17:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:05,606 INFO L480 AbstractCegarLoop]: Abstraction has 138287 states and 160194 transitions. [2018-11-06 21:17:05,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:17:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 138287 states and 160194 transitions. [2018-11-06 21:17:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-11-06 21:17:05,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:05,620 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, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:17:05,621 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:05,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:05,621 INFO L82 PathProgramCache]: Analyzing trace with hash -831904595, now seen corresponding path program 1 times [2018-11-06 21:17:05,621 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:05,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:05,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:05,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:05,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-11-06 21:17:07,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:07,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:17:07,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:17:07,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:17:07,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:07,370 INFO L87 Difference]: Start difference. First operand 138287 states and 160194 transitions. Second operand 5 states. [2018-11-06 21:17:21,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:21,767 INFO L93 Difference]: Finished difference Result 352484 states and 408534 transitions. [2018-11-06 21:17:21,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:17:21,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 437 [2018-11-06 21:17:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:22,002 INFO L225 Difference]: With dead ends: 352484 [2018-11-06 21:17:22,002 INFO L226 Difference]: Without dead ends: 214984 [2018-11-06 21:17:22,054 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:17:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214984 states. [2018-11-06 21:17:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214984 to 205356. [2018-11-06 21:17:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205356 states. [2018-11-06 21:17:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205356 states to 205356 states and 234362 transitions. [2018-11-06 21:17:23,829 INFO L78 Accepts]: Start accepts. Automaton has 205356 states and 234362 transitions. Word has length 437 [2018-11-06 21:17:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:23,829 INFO L480 AbstractCegarLoop]: Abstraction has 205356 states and 234362 transitions. [2018-11-06 21:17:23,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:17:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 205356 states and 234362 transitions. [2018-11-06 21:17:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-11-06 21:17:23,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:23,837 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, 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, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:17:23,838 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:23,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:23,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1379231300, now seen corresponding path program 1 times [2018-11-06 21:17:23,838 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:23,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:23,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:23,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:23,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2018-11-06 21:17:25,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:25,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:17:25,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:17:25,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:17:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:25,560 INFO L87 Difference]: Start difference. First operand 205356 states and 234362 transitions. Second operand 4 states. [2018-11-06 21:17:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:35,986 INFO L93 Difference]: Finished difference Result 491126 states and 559674 transitions. [2018-11-06 21:17:35,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:17:35,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2018-11-06 21:17:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:36,319 INFO L225 Difference]: With dead ends: 491126 [2018-11-06 21:17:36,319 INFO L226 Difference]: Without dead ends: 284193 [2018-11-06 21:17:36,402 INFO L604 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 [2018-11-06 21:17:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284193 states. [2018-11-06 21:17:39,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284193 to 275479. [2018-11-06 21:17:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275479 states. [2018-11-06 21:17:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275479 states to 275479 states and 306054 transitions. [2018-11-06 21:17:40,081 INFO L78 Accepts]: Start accepts. Automaton has 275479 states and 306054 transitions. Word has length 465 [2018-11-06 21:17:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:40,082 INFO L480 AbstractCegarLoop]: Abstraction has 275479 states and 306054 transitions. [2018-11-06 21:17:40,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:17:40,082 INFO L276 IsEmpty]: Start isEmpty. Operand 275479 states and 306054 transitions. [2018-11-06 21:17:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-11-06 21:17:40,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:40,115 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, 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, 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] [2018-11-06 21:17:40,116 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:40,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash -887804345, now seen corresponding path program 1 times [2018-11-06 21:17:40,116 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:40,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:40,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:40,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:40,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1099 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-11-06 21:17:41,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:41,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:17:41,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:17:41,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:17:41,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:17:41,687 INFO L87 Difference]: Start difference. First operand 275479 states and 306054 transitions. Second operand 3 states. [2018-11-06 21:17:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:17:51,575 INFO L93 Difference]: Finished difference Result 551719 states and 612585 transitions. [2018-11-06 21:17:51,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:17:51,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 631 [2018-11-06 21:17:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:17:52,389 INFO L225 Difference]: With dead ends: 551719 [2018-11-06 21:17:52,389 INFO L226 Difference]: Without dead ends: 273081 [2018-11-06 21:17:52,453 INFO L604 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 [2018-11-06 21:17:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273081 states. [2018-11-06 21:17:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273081 to 265979. [2018-11-06 21:17:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265979 states. [2018-11-06 21:17:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265979 states to 265979 states and 287619 transitions. [2018-11-06 21:17:55,118 INFO L78 Accepts]: Start accepts. Automaton has 265979 states and 287619 transitions. Word has length 631 [2018-11-06 21:17:55,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:17:55,119 INFO L480 AbstractCegarLoop]: Abstraction has 265979 states and 287619 transitions. [2018-11-06 21:17:55,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:17:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 265979 states and 287619 transitions. [2018-11-06 21:17:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-11-06 21:17:55,145 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:17:55,145 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, 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, 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, 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] [2018-11-06 21:17:55,146 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:17:55,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:17:55,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1603928616, now seen corresponding path program 1 times [2018-11-06 21:17:55,146 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:17:55,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:17:55,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:55,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:17:55,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:17:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:17:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 759 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-11-06 21:17:56,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:17:56,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:17:56,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:17:56,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:17:56,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:17:56,226 INFO L87 Difference]: Start difference. First operand 265979 states and 287619 transitions. Second operand 4 states. [2018-11-06 21:18:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:05,377 INFO L93 Difference]: Finished difference Result 535145 states and 578501 transitions. [2018-11-06 21:18:05,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:18:05,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 632 [2018-11-06 21:18:05,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:05,691 INFO L225 Difference]: With dead ends: 535145 [2018-11-06 21:18:05,691 INFO L226 Difference]: Without dead ends: 269956 [2018-11-06 21:18:05,764 INFO L604 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 [2018-11-06 21:18:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269956 states. [2018-11-06 21:18:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269956 to 255723. [2018-11-06 21:18:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255723 states. [2018-11-06 21:18:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255723 states to 255723 states and 271684 transitions. [2018-11-06 21:18:08,573 INFO L78 Accepts]: Start accepts. Automaton has 255723 states and 271684 transitions. Word has length 632 [2018-11-06 21:18:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:08,574 INFO L480 AbstractCegarLoop]: Abstraction has 255723 states and 271684 transitions. [2018-11-06 21:18:08,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:18:08,574 INFO L276 IsEmpty]: Start isEmpty. Operand 255723 states and 271684 transitions. [2018-11-06 21:18:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2018-11-06 21:18:08,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:08,607 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:18:08,608 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:08,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:08,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1186821756, now seen corresponding path program 1 times [2018-11-06 21:18:08,608 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:08,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:08,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:08,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:08,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 1195 proven. 6 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-11-06 21:18:10,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:18:10,142 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:18:10,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:10,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:18:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 939 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-11-06 21:18:11,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:18:11,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 21:18:11,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:18:11,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:18:11,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:18:11,131 INFO L87 Difference]: Start difference. First operand 255723 states and 271684 transitions. Second operand 5 states. [2018-11-06 21:18:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:25,552 INFO L93 Difference]: Finished difference Result 519362 states and 551690 transitions. [2018-11-06 21:18:25,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:18:25,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 714 [2018-11-06 21:18:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:25,819 INFO L225 Difference]: With dead ends: 519362 [2018-11-06 21:18:25,819 INFO L226 Difference]: Without dead ends: 262848 [2018-11-06 21:18:25,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 716 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:18:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262848 states. [2018-11-06 21:18:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262848 to 252559. [2018-11-06 21:18:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252559 states. [2018-11-06 21:18:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252559 states to 252559 states and 263187 transitions. [2018-11-06 21:18:28,705 INFO L78 Accepts]: Start accepts. Automaton has 252559 states and 263187 transitions. Word has length 714 [2018-11-06 21:18:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:28,706 INFO L480 AbstractCegarLoop]: Abstraction has 252559 states and 263187 transitions. [2018-11-06 21:18:28,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:18:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 252559 states and 263187 transitions. [2018-11-06 21:18:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-11-06 21:18:28,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:28,733 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2018-11-06 21:18:28,733 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:28,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:28,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1166072326, now seen corresponding path program 1 times [2018-11-06 21:18:28,734 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:28,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:28,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:28,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:28,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1569 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 848 trivial. 0 not checked. [2018-11-06 21:18:30,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:18:30,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:18:30,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:18:30,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:18:30,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:18:30,337 INFO L87 Difference]: Start difference. First operand 252559 states and 263187 transitions. Second operand 4 states. [2018-11-06 21:18:42,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:18:42,612 INFO L93 Difference]: Finished difference Result 550139 states and 573265 transitions. [2018-11-06 21:18:42,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:18:42,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 729 [2018-11-06 21:18:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:18:42,919 INFO L225 Difference]: With dead ends: 550139 [2018-11-06 21:18:42,919 INFO L226 Difference]: Without dead ends: 276242 [2018-11-06 21:18:43,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:18:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276242 states. [2018-11-06 21:18:45,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276242 to 235961. [2018-11-06 21:18:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235961 states. [2018-11-06 21:18:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235961 states to 235961 states and 244979 transitions. [2018-11-06 21:18:45,596 INFO L78 Accepts]: Start accepts. Automaton has 235961 states and 244979 transitions. Word has length 729 [2018-11-06 21:18:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:18:45,596 INFO L480 AbstractCegarLoop]: Abstraction has 235961 states and 244979 transitions. [2018-11-06 21:18:45,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:18:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 235961 states and 244979 transitions. [2018-11-06 21:18:45,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2018-11-06 21:18:45,626 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:18:45,627 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, 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, 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, 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] [2018-11-06 21:18:45,627 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:18:45,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:18:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash -948506152, now seen corresponding path program 1 times [2018-11-06 21:18:45,628 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:18:45,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:18:45,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:45,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:45,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:18:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:46,677 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-06 21:18:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 318 proven. 644 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-11-06 21:18:48,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:18:48,453 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:18:48,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:18:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:18:48,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:18:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 722 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2018-11-06 21:18:50,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:18:50,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 21:18:50,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:18:50,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:18:50,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:18:50,289 INFO L87 Difference]: Start difference. First operand 235961 states and 244979 transitions. Second operand 8 states. Received shutdown request... [2018-11-06 21:18:51,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:18:51,264 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:18:51,269 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:18:51,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:18:51 BoogieIcfgContainer [2018-11-06 21:18:51,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:18:51,270 INFO L168 Benchmark]: Toolchain (without parser) took 218798.05 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-06 21:18:51,271 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-06 21:18:51,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2502.53 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: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:18:51,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 802.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.9 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 67.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:18:51,273 INFO L168 Benchmark]: Boogie Preprocessor took 592.79 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: 71.9 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:18:51,274 INFO L168 Benchmark]: RCFGBuilder took 12805.11 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 229.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 45.3 MB). Peak memory consumption was 566.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:18:51,275 INFO L168 Benchmark]: TraceAbstraction took 202090.53 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-06 21:18:51,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2502.53 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: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 802.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.9 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 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 592.79 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: 71.9 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12805.11 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 229.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 45.3 MB). Peak memory consumption was 566.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202090.53 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was constructing difference of abstraction (235961states) and FLOYD_HOARE automaton (currently 4 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (306 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 202.0s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 161.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11308 SDtfs, 33188 SDslu, 3585 SDs, 0 SdLazy, 71865 SolverSat, 18529 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 118.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2124 GetRequests, 2077 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275479occurred in iteration=9, 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: 21.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 126053 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 8187 NumberOfCodeBlocks, 8187 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8169 ConstructedInterpolants, 90 QuantifiedInterpolants, 11369574 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2652 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 11630/12378 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown