java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:12:59,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:12:59,488 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:12:59,504 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:12:59,504 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:12:59,505 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:12:59,507 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:12:59,509 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:12:59,510 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:12:59,511 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:12:59,512 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:12:59,513 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:12:59,514 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:12:59,515 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:12:59,516 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:12:59,517 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:12:59,518 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:12:59,520 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:12:59,522 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:12:59,523 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:12:59,524 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:12:59,526 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:12:59,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:12:59,529 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:12:59,529 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:12:59,530 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:12:59,531 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:12:59,532 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:12:59,532 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:12:59,534 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:12:59,534 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:12:59,535 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:12:59,538 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 [2018-10-26 19:12:59,553 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:12:59,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:12:59,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:12:59,555 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:12:59,555 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:12:59,555 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:12:59,556 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:12:59,556 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:12:59,556 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:12:59,556 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:12:59,557 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:12:59,557 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:12:59,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:12:59,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:12:59,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:12:59,558 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:12:59,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:12:59,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:12:59,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:12:59,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:12:59,559 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:12:59,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:12:59,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:12:59,559 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:12:59,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:12:59,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:12:59,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:12:59,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:12:59,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:12:59,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:12:59,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:12:59,632 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:12:59,632 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:12:59,633 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label23_false-unreach-call.c [2018-10-26 19:12:59,702 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0eb6bbb3d/f7b4edd6e8a44551b15300906fec8fcb/FLAG006acf4e3 [2018-10-26 19:13:00,561 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:13:00,562 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label23_false-unreach-call.c [2018-10-26 19:13:00,607 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0eb6bbb3d/f7b4edd6e8a44551b15300906fec8fcb/FLAG006acf4e3 [2018-10-26 19:13:00,629 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0eb6bbb3d/f7b4edd6e8a44551b15300906fec8fcb [2018-10-26 19:13:00,644 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:13:00,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:13:00,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:13:00,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:13:00,652 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:13:00,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:13:00" (1/1) ... [2018-10-26 19:13:00,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:00, skipping insertion in model container [2018-10-26 19:13:00,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:13:00" (1/1) ... [2018-10-26 19:13:00,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:13:00,869 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:13:02,433 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:13:02,438 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:13:03,225 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:13:03,264 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:13:03,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03 WrapperNode [2018-10-26 19:13:03,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:13:03,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:13:03,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:13:03,266 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:13:03,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:03,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:04,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:13:04,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:13:04,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:13:04,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:13:04,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:04,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:04,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:04,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:04,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:04,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:04,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (1/1) ... [2018-10-26 19:13:04,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:13:04,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:13:04,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:13:04,648 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:13:04,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (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 [2018-10-26 19:13:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:13:04,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:13:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:13:18,433 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:13:18,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:13:18 BoogieIcfgContainer [2018-10-26 19:13:18,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:13:18,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:13:18,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:13:18,438 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:13:18,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:13:00" (1/3) ... [2018-10-26 19:13:18,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:13:18, skipping insertion in model container [2018-10-26 19:13:18,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:13:03" (2/3) ... [2018-10-26 19:13:18,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:13:18, skipping insertion in model container [2018-10-26 19:13:18,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:13:18" (3/3) ... [2018-10-26 19:13:18,444 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label23_false-unreach-call.c [2018-10-26 19:13:18,454 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:13:18,465 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:13:18,483 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:13:18,530 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:13:18,530 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:13:18,531 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:13:18,531 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:13:18,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:13:18,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:13:18,531 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:13:18,531 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:13:18,531 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:13:18,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 19:13:18,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 19:13:18,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:18,579 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:18,582 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:18,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:18,589 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-10-26 19:13:18,592 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:18,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:18,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:18,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:18,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:19,022 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-26 19:13:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:13:19,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:19,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:13:19,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:19,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:19,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:19,054 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 19:13:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:35,854 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-26 19:13:35,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:35,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-26 19:13:35,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:35,905 INFO L225 Difference]: With dead ends: 3863 [2018-10-26 19:13:35,906 INFO L226 Difference]: Without dead ends: 2757 [2018-10-26 19:13:35,916 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 [2018-10-26 19:13:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-26 19:13:36,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-26 19:13:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-26 19:13:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-26 19:13:36,096 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 14 [2018-10-26 19:13:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:36,096 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-26 19:13:36,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:13:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-26 19:13:36,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-26 19:13:36,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:36,105 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:13:36,106 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:36,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:36,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1382153005, now seen corresponding path program 1 times [2018-10-26 19:13:36,107 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:36,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:36,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:36,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:36,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:13:36,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:36,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:13:36,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:36,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:36,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:36,573 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-26 19:13:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:51,459 INFO L93 Difference]: Finished difference Result 10268 states and 17048 transitions. [2018-10-26 19:13:51,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:51,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-26 19:13:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:51,501 INFO L225 Difference]: With dead ends: 10268 [2018-10-26 19:13:51,501 INFO L226 Difference]: Without dead ends: 7534 [2018-10-26 19:13:51,508 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 [2018-10-26 19:13:51,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2018-10-26 19:13:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7528. [2018-10-26 19:13:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7528 states. [2018-10-26 19:13:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11328 transitions. [2018-10-26 19:13:51,671 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11328 transitions. Word has length 101 [2018-10-26 19:13:51,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:51,672 INFO L481 AbstractCegarLoop]: Abstraction has 7528 states and 11328 transitions. [2018-10-26 19:13:51,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:13:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11328 transitions. [2018-10-26 19:13:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-26 19:13:51,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:51,681 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:13:51,681 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:51,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:51,682 INFO L82 PathProgramCache]: Analyzing trace with hash 246824780, now seen corresponding path program 1 times [2018-10-26 19:13:51,682 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:51,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:51,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:51,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:51,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:13:52,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:13:52,091 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 [2018-10-26 19:13:52,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:52,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:13:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:13:52,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:13:52,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:13:52,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:13:52,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:13:52,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:13:52,305 INFO L87 Difference]: Start difference. First operand 7528 states and 11328 transitions. Second operand 6 states. [2018-10-26 19:14:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:23,738 INFO L93 Difference]: Finished difference Result 57105 states and 87088 transitions. [2018-10-26 19:14:23,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:14:23,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-26 19:14:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:23,919 INFO L225 Difference]: With dead ends: 57105 [2018-10-26 19:14:23,920 INFO L226 Difference]: Without dead ends: 49579 [2018-10-26 19:14:23,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:14:23,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49579 states. [2018-10-26 19:14:24,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49579 to 49409. [2018-10-26 19:14:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49409 states. [2018-10-26 19:14:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49409 states to 49409 states and 67025 transitions. [2018-10-26 19:14:24,887 INFO L78 Accepts]: Start accepts. Automaton has 49409 states and 67025 transitions. Word has length 111 [2018-10-26 19:14:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:24,888 INFO L481 AbstractCegarLoop]: Abstraction has 49409 states and 67025 transitions. [2018-10-26 19:14:24,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:14:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 49409 states and 67025 transitions. [2018-10-26 19:14:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-26 19:14:24,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:24,905 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:14:24,905 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:24,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:24,906 INFO L82 PathProgramCache]: Analyzing trace with hash -674539072, now seen corresponding path program 1 times [2018-10-26 19:14:24,908 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:24,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:24,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:24,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:24,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:25,526 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-26 19:14:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 19:14:25,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:25,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:14:25,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:14:25,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:14:25,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:25,617 INFO L87 Difference]: Start difference. First operand 49409 states and 67025 transitions. Second operand 4 states. [2018-10-26 19:14:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:37,128 INFO L93 Difference]: Finished difference Result 122514 states and 162273 transitions. [2018-10-26 19:14:37,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:37,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2018-10-26 19:14:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:37,235 INFO L225 Difference]: With dead ends: 122514 [2018-10-26 19:14:37,235 INFO L226 Difference]: Without dead ends: 73107 [2018-10-26 19:14:37,295 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 [2018-10-26 19:14:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73107 states. [2018-10-26 19:14:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73107 to 63593. [2018-10-26 19:14:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63593 states. [2018-10-26 19:14:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63593 states to 63593 states and 82894 transitions. [2018-10-26 19:14:38,222 INFO L78 Accepts]: Start accepts. Automaton has 63593 states and 82894 transitions. Word has length 248 [2018-10-26 19:14:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:38,222 INFO L481 AbstractCegarLoop]: Abstraction has 63593 states and 82894 transitions. [2018-10-26 19:14:38,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:14:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 63593 states and 82894 transitions. [2018-10-26 19:14:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-26 19:14:38,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:38,239 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:14:38,239 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:38,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1912931644, now seen corresponding path program 1 times [2018-10-26 19:14:38,240 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:38,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:38,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:38,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:38,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:38,711 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:14:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:14:38,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:38,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:14:38,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:14:38,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:14:38,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:14:38,806 INFO L87 Difference]: Start difference. First operand 63593 states and 82894 transitions. Second operand 4 states. [2018-10-26 19:14:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:49,596 INFO L93 Difference]: Finished difference Result 217008 states and 282948 transitions. [2018-10-26 19:14:49,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:14:49,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2018-10-26 19:14:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:49,760 INFO L225 Difference]: With dead ends: 217008 [2018-10-26 19:14:49,761 INFO L226 Difference]: Without dead ends: 124158 [2018-10-26 19:14:49,830 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 [2018-10-26 19:14:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124158 states. [2018-10-26 19:14:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124158 to 118635. [2018-10-26 19:14:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118635 states. [2018-10-26 19:14:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118635 states to 118635 states and 137509 transitions. [2018-10-26 19:14:51,223 INFO L78 Accepts]: Start accepts. Automaton has 118635 states and 137509 transitions. Word has length 257 [2018-10-26 19:14:51,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:51,224 INFO L481 AbstractCegarLoop]: Abstraction has 118635 states and 137509 transitions. [2018-10-26 19:14:51,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:14:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 118635 states and 137509 transitions. [2018-10-26 19:14:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-26 19:14:51,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:51,233 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:14:51,233 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:51,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:51,234 INFO L82 PathProgramCache]: Analyzing trace with hash 967060679, now seen corresponding path program 1 times [2018-10-26 19:14:51,234 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:51,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:51,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:51,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:51,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:51,667 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-26 19:14:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-26 19:14:51,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:51,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:14:51,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:14:51,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:14:51,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:14:51,839 INFO L87 Difference]: Start difference. First operand 118635 states and 137509 transitions. Second operand 5 states. [2018-10-26 19:15:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:08,293 INFO L93 Difference]: Finished difference Result 246743 states and 285163 transitions. [2018-10-26 19:15:08,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:15:08,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2018-10-26 19:15:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:08,433 INFO L225 Difference]: With dead ends: 246743 [2018-10-26 19:15:08,433 INFO L226 Difference]: Without dead ends: 128898 [2018-10-26 19:15:08,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:15:08,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128898 states. [2018-10-26 19:15:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128898 to 128882. [2018-10-26 19:15:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128882 states. [2018-10-26 19:15:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128882 states to 128882 states and 148041 transitions. [2018-10-26 19:15:10,468 INFO L78 Accepts]: Start accepts. Automaton has 128882 states and 148041 transitions. Word has length 316 [2018-10-26 19:15:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:10,469 INFO L481 AbstractCegarLoop]: Abstraction has 128882 states and 148041 transitions. [2018-10-26 19:15:10,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:15:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 128882 states and 148041 transitions. [2018-10-26 19:15:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-26 19:15:10,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:10,482 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:10,482 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:10,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:10,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1010892797, now seen corresponding path program 1 times [2018-10-26 19:15:10,483 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:10,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:10,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:10,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:10,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 19:15:10,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:15:10,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:15:10,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:15:10,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:15:10,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:15:10,939 INFO L87 Difference]: Start difference. First operand 128882 states and 148041 transitions. Second operand 4 states. [2018-10-26 19:15:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:23,115 INFO L93 Difference]: Finished difference Result 287749 states and 332287 transitions. [2018-10-26 19:15:23,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:15:23,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 383 [2018-10-26 19:15:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:23,300 INFO L225 Difference]: With dead ends: 287749 [2018-10-26 19:15:23,300 INFO L226 Difference]: Without dead ends: 159657 [2018-10-26 19:15:23,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:15:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159657 states. [2018-10-26 19:15:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159657 to 149361. [2018-10-26 19:15:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149361 states. [2018-10-26 19:15:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149361 states to 149361 states and 166834 transitions. [2018-10-26 19:15:24,740 INFO L78 Accepts]: Start accepts. Automaton has 149361 states and 166834 transitions. Word has length 383 [2018-10-26 19:15:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:24,740 INFO L481 AbstractCegarLoop]: Abstraction has 149361 states and 166834 transitions. [2018-10-26 19:15:24,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:15:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 149361 states and 166834 transitions. [2018-10-26 19:15:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-26 19:15:24,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:24,750 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:24,751 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:24,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:24,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1970013513, now seen corresponding path program 1 times [2018-10-26 19:15:24,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:24,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:24,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:24,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:24,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-26 19:15:25,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:15:25,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:15:25,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:15:25,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:15:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:15:25,178 INFO L87 Difference]: Start difference. First operand 149361 states and 166834 transitions. Second operand 4 states. [2018-10-26 19:15:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:37,979 INFO L93 Difference]: Finished difference Result 323171 states and 362360 transitions. [2018-10-26 19:15:37,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:15:37,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2018-10-26 19:15:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:38,215 INFO L225 Difference]: With dead ends: 323171 [2018-10-26 19:15:38,215 INFO L226 Difference]: Without dead ends: 174600 [2018-10-26 19:15:38,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:15:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174600 states. [2018-10-26 19:15:41,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174600 to 172207. [2018-10-26 19:15:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172207 states. [2018-10-26 19:15:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172207 states to 172207 states and 187460 transitions. [2018-10-26 19:15:41,314 INFO L78 Accepts]: Start accepts. Automaton has 172207 states and 187460 transitions. Word has length 413 [2018-10-26 19:15:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:41,314 INFO L481 AbstractCegarLoop]: Abstraction has 172207 states and 187460 transitions. [2018-10-26 19:15:41,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:15:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 172207 states and 187460 transitions. [2018-10-26 19:15:41,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-10-26 19:15:41,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:41,324 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:41,324 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:41,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:41,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1924570743, now seen corresponding path program 1 times [2018-10-26 19:15:41,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:41,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:41,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:41,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:41,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2018-10-26 19:15:41,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:15:41,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:15:41,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:15:41,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:15:41,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:15:41,894 INFO L87 Difference]: Start difference. First operand 172207 states and 187460 transitions. Second operand 3 states. [2018-10-26 19:15:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:51,375 INFO L93 Difference]: Finished difference Result 342834 states and 373333 transitions. [2018-10-26 19:15:51,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:15:51,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 473 [2018-10-26 19:15:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:51,572 INFO L225 Difference]: With dead ends: 342834 [2018-10-26 19:15:51,572 INFO L226 Difference]: Without dead ends: 171417 [2018-10-26 19:15:51,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:15:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171417 states. [2018-10-26 19:15:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171417 to 159590. [2018-10-26 19:15:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159590 states. [2018-10-26 19:15:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159590 states to 159590 states and 170391 transitions. [2018-10-26 19:15:58,225 INFO L78 Accepts]: Start accepts. Automaton has 159590 states and 170391 transitions. Word has length 473 [2018-10-26 19:15:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:58,226 INFO L481 AbstractCegarLoop]: Abstraction has 159590 states and 170391 transitions. [2018-10-26 19:15:58,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:15:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 159590 states and 170391 transitions. [2018-10-26 19:15:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-10-26 19:15:58,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:58,282 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:58,283 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:58,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:58,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1267048652, now seen corresponding path program 1 times [2018-10-26 19:15:58,283 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:58,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:58,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:58,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:58,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 502 proven. 12 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2018-10-26 19:15:59,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:15:59,846 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:15:59,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:00,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:16:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 436 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-10-26 19:16:00,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:16:00,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-26 19:16:00,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:16:00,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:16:00,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:16:00,802 INFO L87 Difference]: Start difference. First operand 159590 states and 170391 transitions. Second operand 6 states. [2018-10-26 19:16:16,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:16,110 INFO L93 Difference]: Finished difference Result 458823 states and 492072 transitions. [2018-10-26 19:16:16,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:16:16,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 788 [2018-10-26 19:16:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:16,443 INFO L225 Difference]: With dead ends: 458823 [2018-10-26 19:16:16,443 INFO L226 Difference]: Without dead ends: 300023 [2018-10-26 19:16:16,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 788 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:16:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300023 states. [2018-10-26 19:16:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300023 to 188731. [2018-10-26 19:16:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188731 states. [2018-10-26 19:16:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188731 states to 188731 states and 199922 transitions. [2018-10-26 19:16:19,114 INFO L78 Accepts]: Start accepts. Automaton has 188731 states and 199922 transitions. Word has length 788 [2018-10-26 19:16:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:19,115 INFO L481 AbstractCegarLoop]: Abstraction has 188731 states and 199922 transitions. [2018-10-26 19:16:19,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:16:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 188731 states and 199922 transitions. [2018-10-26 19:16:19,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-10-26 19:16:19,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:19,827 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:16:19,827 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:19,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:19,828 INFO L82 PathProgramCache]: Analyzing trace with hash -360233870, now seen corresponding path program 1 times [2018-10-26 19:16:19,828 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:19,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:19,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:19,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:19,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2018-10-26 19:16:20,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:20,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:16:20,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:20,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:20,625 INFO L87 Difference]: Start difference. First operand 188731 states and 199922 transitions. Second operand 4 states. [2018-10-26 19:16:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:37,914 INFO L93 Difference]: Finished difference Result 439052 states and 465919 transitions. [2018-10-26 19:16:37,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:16:37,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 788 [2018-10-26 19:16:37,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:38,238 INFO L225 Difference]: With dead ends: 439052 [2018-10-26 19:16:38,238 INFO L226 Difference]: Without dead ends: 251111 [2018-10-26 19:16:38,306 INFO L605 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 [2018-10-26 19:16:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251111 states. [2018-10-26 19:16:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251111 to 243901. [2018-10-26 19:16:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243901 states. [2018-10-26 19:16:41,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243901 states to 243901 states and 258830 transitions. [2018-10-26 19:16:41,008 INFO L78 Accepts]: Start accepts. Automaton has 243901 states and 258830 transitions. Word has length 788 [2018-10-26 19:16:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:41,009 INFO L481 AbstractCegarLoop]: Abstraction has 243901 states and 258830 transitions. [2018-10-26 19:16:41,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:16:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 243901 states and 258830 transitions. [2018-10-26 19:16:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2018-10-26 19:16:41,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:41,037 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:16:41,037 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:41,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:41,038 INFO L82 PathProgramCache]: Analyzing trace with hash 883708017, now seen corresponding path program 1 times [2018-10-26 19:16:41,038 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:41,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:41,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:41,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:41,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-26 19:16:42,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:42,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:16:42,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:42,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:42,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:42,929 INFO L87 Difference]: Start difference. First operand 243901 states and 258830 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 19:16:50,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:16:50,235 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:16:50,242 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:16:50,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:16:50 BoogieIcfgContainer [2018-10-26 19:16:50,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:16:50,243 INFO L168 Benchmark]: Toolchain (without parser) took 229598.91 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -18.9 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-26 19:16:50,244 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-26 19:16:50,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2618.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:16:50,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 821.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -992.1 MB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:16:50,247 INFO L168 Benchmark]: Boogie Preprocessor took 559.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2018-10-26 19:16:50,248 INFO L168 Benchmark]: RCFGBuilder took 13786.49 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 263.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -2.8 MB). Peak memory consumption was 616.5 MB. Max. memory is 7.1 GB. [2018-10-26 19:16:50,248 INFO L168 Benchmark]: TraceAbstraction took 211807.55 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.4 GB in the end (delta: 659.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:16:50,253 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2618.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 821.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -992.1 MB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 559.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13786.49 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 263.7 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -2.8 MB). Peak memory consumption was 616.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211807.55 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.4 GB in the end (delta: 659.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (243901states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (178661 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 211.7s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 178.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8558 SDtfs, 29123 SDslu, 3595 SDs, 0 SdLazy, 66699 SolverSat, 15809 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 143.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 965 GetRequests, 919 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243901occurred in iteration=11, 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: 21.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 158268 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 5609 NumberOfCodeBlocks, 5609 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5595 ConstructedInterpolants, 0 QuantifiedInterpolants, 7078329 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1155 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 5991/6010 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown