java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:05:45,329 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:05:45,331 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:05:45,343 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:05:45,343 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:05:45,344 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:05:45,346 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:05:45,348 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:05:45,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:05:45,350 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:05:45,351 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:05:45,352 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:05:45,353 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:05:45,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:05:45,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:05:45,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:05:45,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:05:45,359 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:05:45,361 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:05:45,363 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:05:45,364 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:05:45,366 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:05:45,369 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:05:45,369 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:05:45,369 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:05:45,370 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:05:45,371 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:05:45,372 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:05:45,373 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:05:45,374 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:05:45,375 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:05:45,376 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 17:05:45,378 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:05:45,394 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:05:45,395 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:05:45,396 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:05:45,396 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:05:45,397 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:05:45,397 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:05:45,397 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:05:45,397 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:05:45,398 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:05:45,398 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:05:45,398 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:05:45,398 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:05:45,399 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:05:45,399 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:05:45,399 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:05:45,399 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:05:45,400 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:05:45,400 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:05:45,400 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:05:45,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:05:45,401 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:05:45,401 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:05:45,401 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:05:45,401 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:05:45,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:05:45,402 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:05:45,402 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:05:45,402 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:05:45,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:05:45,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:05:45,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:05:45,472 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:05:45,472 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:05:45,473 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-24 17:05:45,537 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b7a2698d/7d28c2e5dc5d418e84005027c244b7f9/FLAGa0d861f30 [2018-10-24 17:05:46,437 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:05:46,439 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-24 17:05:46,491 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b7a2698d/7d28c2e5dc5d418e84005027c244b7f9/FLAGa0d861f30 [2018-10-24 17:05:46,512 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b7a2698d/7d28c2e5dc5d418e84005027c244b7f9 [2018-10-24 17:05:46,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:05:46,526 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:05:46,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:05:46,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:05:46,533 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:05:46,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:05:46" (1/1) ... [2018-10-24 17:05:46,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a79e33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:46, skipping insertion in model container [2018-10-24 17:05:46,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:05:46" (1/1) ... [2018-10-24 17:05:46,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:05:46,815 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:05:48,812 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:05:48,818 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:05:49,956 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:05:50,012 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:05:50,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50 WrapperNode [2018-10-24 17:05:50,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:05:50,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:05:50,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:05:50,014 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:05:50,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:50,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:51,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:05:51,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:05:51,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:05:51,083 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:05:51,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:51,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:51,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:51,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:51,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:51,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:51,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... [2018-10-24 17:05:51,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:05:51,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:05:51,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:05:51,878 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:05:51,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:05:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:05:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:05:51,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:06:08,303 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:06:08,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:06:08 BoogieIcfgContainer [2018-10-24 17:06:08,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:06:08,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:06:08,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:06:08,309 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:06:08,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:05:46" (1/3) ... [2018-10-24 17:06:08,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c217823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:06:08, skipping insertion in model container [2018-10-24 17:06:08,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:50" (2/3) ... [2018-10-24 17:06:08,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c217823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:06:08, skipping insertion in model container [2018-10-24 17:06:08,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:06:08" (3/3) ... [2018-10-24 17:06:08,313 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label25_true-unreach-call.c [2018-10-24 17:06:08,323 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:06:08,334 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:06:08,352 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:06:08,404 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:06:08,405 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:06:08,405 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:06:08,406 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:06:08,406 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:06:08,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:06:08,406 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:06:08,406 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:06:08,406 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:06:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:06:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 17:06:08,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:08,478 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] [2018-10-24 17:06:08,481 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:08,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:08,488 INFO L82 PathProgramCache]: Analyzing trace with hash 680225122, now seen corresponding path program 1 times [2018-10-24 17:06:08,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:08,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:08,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:08,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:08,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:06:08,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:08,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:06:08,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:08,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:08,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:08,971 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:06:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:31,967 INFO L93 Difference]: Finished difference Result 6326 states and 12085 transitions. [2018-10-24 17:06:31,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:31,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-24 17:06:31,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:32,022 INFO L225 Difference]: With dead ends: 6326 [2018-10-24 17:06:32,022 INFO L226 Difference]: Without dead ends: 4570 [2018-10-24 17:06:32,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2018-10-24 17:06:32,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 4564. [2018-10-24 17:06:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-24 17:06:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 7499 transitions. [2018-10-24 17:06:32,244 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 7499 transitions. Word has length 37 [2018-10-24 17:06:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:32,245 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 7499 transitions. [2018-10-24 17:06:32,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 7499 transitions. [2018-10-24 17:06:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 17:06:32,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:32,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:32,253 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:32,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:32,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1877327220, now seen corresponding path program 1 times [2018-10-24 17:06:32,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:32,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:32,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:32,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:32,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:32,731 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-10-24 17:06:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:06:32,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:32,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:06:32,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:32,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:32,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:32,911 INFO L87 Difference]: Start difference. First operand 4564 states and 7499 transitions. Second operand 4 states. [2018-10-24 17:06:58,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:58,315 INFO L93 Difference]: Finished difference Result 17552 states and 29056 transitions. [2018-10-24 17:06:58,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:58,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-24 17:06:58,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:58,384 INFO L225 Difference]: With dead ends: 17552 [2018-10-24 17:06:58,384 INFO L226 Difference]: Without dead ends: 12990 [2018-10-24 17:06:58,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-24 17:06:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8666. [2018-10-24 17:06:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8666 states. [2018-10-24 17:06:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8666 states to 8666 states and 13862 transitions. [2018-10-24 17:06:58,597 INFO L78 Accepts]: Start accepts. Automaton has 8666 states and 13862 transitions. Word has length 141 [2018-10-24 17:06:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:58,597 INFO L481 AbstractCegarLoop]: Abstraction has 8666 states and 13862 transitions. [2018-10-24 17:06:58,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8666 states and 13862 transitions. [2018-10-24 17:06:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 17:06:58,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:58,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:58,611 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:58,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash -570705154, now seen corresponding path program 1 times [2018-10-24 17:06:58,611 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:58,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:58,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:58,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:58,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:06:58,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:58,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:06:58,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:58,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:58,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:58,966 INFO L87 Difference]: Start difference. First operand 8666 states and 13862 transitions. Second operand 4 states. [2018-10-24 17:07:20,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:20,950 INFO L93 Difference]: Finished difference Result 33844 states and 54415 transitions. [2018-10-24 17:07:20,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:20,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2018-10-24 17:07:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:21,030 INFO L225 Difference]: With dead ends: 33844 [2018-10-24 17:07:21,030 INFO L226 Difference]: Without dead ends: 25180 [2018-10-24 17:07:21,049 INFO L605 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 [2018-10-24 17:07:21,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25180 states. [2018-10-24 17:07:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25180 to 25142. [2018-10-24 17:07:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25142 states. [2018-10-24 17:07:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25142 states to 25142 states and 35892 transitions. [2018-10-24 17:07:21,791 INFO L78 Accepts]: Start accepts. Automaton has 25142 states and 35892 transitions. Word has length 145 [2018-10-24 17:07:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:21,792 INFO L481 AbstractCegarLoop]: Abstraction has 25142 states and 35892 transitions. [2018-10-24 17:07:21,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 25142 states and 35892 transitions. [2018-10-24 17:07:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 17:07:21,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:21,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:07:21,798 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:21,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:21,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2131193034, now seen corresponding path program 1 times [2018-10-24 17:07:21,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:21,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:21,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:21,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:21,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:22,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:22,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:22,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:07:22,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:07:22,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:22,151 INFO L87 Difference]: Start difference. First operand 25142 states and 35892 transitions. Second operand 4 states. [2018-10-24 17:07:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:43,721 INFO L93 Difference]: Finished difference Result 98404 states and 140796 transitions. [2018-10-24 17:07:43,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:43,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2018-10-24 17:07:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:43,829 INFO L225 Difference]: With dead ends: 98404 [2018-10-24 17:07:43,830 INFO L226 Difference]: Without dead ends: 73264 [2018-10-24 17:07:43,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:07:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73264 states. [2018-10-24 17:07:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73264 to 73244. [2018-10-24 17:07:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73244 states. [2018-10-24 17:07:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73244 states to 73244 states and 91793 transitions. [2018-10-24 17:07:44,816 INFO L78 Accepts]: Start accepts. Automaton has 73244 states and 91793 transitions. Word has length 168 [2018-10-24 17:07:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:44,817 INFO L481 AbstractCegarLoop]: Abstraction has 73244 states and 91793 transitions. [2018-10-24 17:07:44,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:44,817 INFO L276 IsEmpty]: Start isEmpty. Operand 73244 states and 91793 transitions. [2018-10-24 17:07:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-10-24 17:07:44,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:44,830 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:07:44,830 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:44,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:44,831 INFO L82 PathProgramCache]: Analyzing trace with hash 936486196, now seen corresponding path program 1 times [2018-10-24 17:07:44,831 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:44,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:44,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:44,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:44,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:45,400 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:07:45,743 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:07:45,908 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:07:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-10-24 17:07:46,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:46,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:07:46,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:07:46,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:07:46,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:07:46,437 INFO L87 Difference]: Start difference. First operand 73244 states and 91793 transitions. Second operand 7 states. [2018-10-24 17:08:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:22,324 INFO L93 Difference]: Finished difference Result 172454 states and 210825 transitions. [2018-10-24 17:08:22,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:08:22,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2018-10-24 17:08:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:22,506 INFO L225 Difference]: With dead ends: 172454 [2018-10-24 17:08:22,506 INFO L226 Difference]: Without dead ends: 99212 [2018-10-24 17:08:22,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:08:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99212 states. [2018-10-24 17:08:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99212 to 95108. [2018-10-24 17:08:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95108 states. [2018-10-24 17:08:24,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95108 states to 95108 states and 114314 transitions. [2018-10-24 17:08:24,140 INFO L78 Accepts]: Start accepts. Automaton has 95108 states and 114314 transitions. Word has length 492 [2018-10-24 17:08:24,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:24,141 INFO L481 AbstractCegarLoop]: Abstraction has 95108 states and 114314 transitions. [2018-10-24 17:08:24,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:08:24,141 INFO L276 IsEmpty]: Start isEmpty. Operand 95108 states and 114314 transitions. [2018-10-24 17:08:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-10-24 17:08:24,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:24,153 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:08:24,153 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:24,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:24,154 INFO L82 PathProgramCache]: Analyzing trace with hash 817388878, now seen corresponding path program 1 times [2018-10-24 17:08:24,154 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:24,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:24,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:24,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:24,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-24 17:08:24,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:24,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:08:24,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:24,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:24,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:24,726 INFO L87 Difference]: Start difference. First operand 95108 states and 114314 transitions. Second operand 4 states. [2018-10-24 17:08:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:41,750 INFO L93 Difference]: Finished difference Result 238036 states and 291029 transitions. [2018-10-24 17:08:41,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:08:41,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 520 [2018-10-24 17:08:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:41,932 INFO L225 Difference]: With dead ends: 238036 [2018-10-24 17:08:41,932 INFO L226 Difference]: Without dead ends: 142930 [2018-10-24 17:08:42,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142930 states. [2018-10-24 17:08:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142930 to 142919. [2018-10-24 17:08:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142919 states. [2018-10-24 17:08:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142919 states to 142919 states and 167348 transitions. [2018-10-24 17:08:43,287 INFO L78 Accepts]: Start accepts. Automaton has 142919 states and 167348 transitions. Word has length 520 [2018-10-24 17:08:43,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:43,288 INFO L481 AbstractCegarLoop]: Abstraction has 142919 states and 167348 transitions. [2018-10-24 17:08:43,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:08:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 142919 states and 167348 transitions. [2018-10-24 17:08:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2018-10-24 17:08:43,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:43,324 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:08:43,324 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:43,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:43,325 INFO L82 PathProgramCache]: Analyzing trace with hash 338414201, now seen corresponding path program 1 times [2018-10-24 17:08:43,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:43,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:43,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:43,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:43,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:44,148 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 17:08:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:08:45,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:08:45,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:08:45,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:08:45,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:08:45,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:08:45,457 INFO L87 Difference]: Start difference. First operand 142919 states and 167348 transitions. Second operand 4 states. [2018-10-24 17:09:03,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:03,361 INFO L93 Difference]: Finished difference Result 285839 states and 334703 transitions. [2018-10-24 17:09:03,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:03,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 892 [2018-10-24 17:09:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:03,569 INFO L225 Difference]: With dead ends: 285839 [2018-10-24 17:09:03,569 INFO L226 Difference]: Without dead ends: 142922 [2018-10-24 17:09:03,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142922 states. [2018-10-24 17:09:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142922 to 131983. [2018-10-24 17:09:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131983 states. [2018-10-24 17:09:04,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131983 states to 131983 states and 147276 transitions. [2018-10-24 17:09:04,805 INFO L78 Accepts]: Start accepts. Automaton has 131983 states and 147276 transitions. Word has length 892 [2018-10-24 17:09:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:04,806 INFO L481 AbstractCegarLoop]: Abstraction has 131983 states and 147276 transitions. [2018-10-24 17:09:04,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 131983 states and 147276 transitions. [2018-10-24 17:09:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-10-24 17:09:04,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:04,822 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:09:04,822 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:04,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:04,822 INFO L82 PathProgramCache]: Analyzing trace with hash 203195525, now seen corresponding path program 1 times [2018-10-24 17:09:04,823 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:04,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:04,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:04,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:04,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-24 17:09:07,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:09:07,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:09:07,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:09:07,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:09:07,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:07,021 INFO L87 Difference]: Start difference. First operand 131983 states and 147276 transitions. Second operand 4 states. [2018-10-24 17:09:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:30,269 INFO L93 Difference]: Finished difference Result 451279 states and 505202 transitions. [2018-10-24 17:09:30,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:30,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 910 [2018-10-24 17:09:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:30,621 INFO L225 Difference]: With dead ends: 451279 [2018-10-24 17:09:30,622 INFO L226 Difference]: Without dead ends: 308366 [2018-10-24 17:09:30,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:09:30,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308366 states. [2018-10-24 17:09:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308366 to 304114. [2018-10-24 17:09:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304114 states. [2018-10-24 17:09:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304114 states to 304114 states and 333815 transitions. [2018-10-24 17:09:36,148 INFO L78 Accepts]: Start accepts. Automaton has 304114 states and 333815 transitions. Word has length 910 [2018-10-24 17:09:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:36,150 INFO L481 AbstractCegarLoop]: Abstraction has 304114 states and 333815 transitions. [2018-10-24 17:09:36,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:09:36,150 INFO L276 IsEmpty]: Start isEmpty. Operand 304114 states and 333815 transitions. [2018-10-24 17:09:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2018-10-24 17:09:36,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:36,178 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:09:36,178 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:36,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1739348221, now seen corresponding path program 1 times [2018-10-24 17:09:36,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:36,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:36,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:36,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:36,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 17:09:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 512 proven. 4 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-24 17:09:45,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:09:45,116 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:09:45,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:45,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:09:45,521 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 17:09:45,723 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:09:45,724 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:09:45,729 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:09:45,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:09:45 BoogieIcfgContainer [2018-10-24 17:09:45,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:09:45,730 INFO L168 Benchmark]: Toolchain (without parser) took 239205.75 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 17:09:45,731 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:09:45,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3485.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:45,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 1068.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 839.4 MB). Free memory was 976.7 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:45,733 INFO L168 Benchmark]: Boogie Preprocessor took 794.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 96.2 MB). Peak memory consumption was 96.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:45,734 INFO L168 Benchmark]: RCFGBuilder took 16425.79 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 272.1 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 521.3 MB). Peak memory consumption was 793.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:45,735 INFO L168 Benchmark]: TraceAbstraction took 217423.98 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 403.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:45,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3485.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 976.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1068.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 839.4 MB). Free memory was 976.7 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 794.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 96.2 MB). Peak memory consumption was 96.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16425.79 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 272.1 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 521.3 MB). Peak memory consumption was 793.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217423.98 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 403.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was analyzing trace of length 1085 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 217.3s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 187.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9805 SDtfs, 32168 SDslu, 3705 SDs, 0 SdLazy, 82260 SolverSat, 18443 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 158.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=304114occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 23694 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 3305 NumberOfCodeBlocks, 3305 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3297 ConstructedInterpolants, 0 QuantifiedInterpolants, 3984362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 2096/2096 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown