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_label21_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:47:46,452 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:47:46,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:47:46,473 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:47:46,473 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:47:46,474 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:47:46,475 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:47:46,477 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:47:46,479 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:47:46,480 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:47:46,481 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:47:46,481 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:47:46,482 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:47:46,483 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:47:46,484 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:47:46,485 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:47:46,486 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:47:46,488 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:47:46,490 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:47:46,491 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:47:46,493 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:47:46,494 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:47:46,496 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:47:46,496 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:47:46,497 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:47:46,497 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:47:46,498 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:47:46,499 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:47:46,500 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:47:46,501 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:47:46,502 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:47:46,502 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:47:46,505 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 19:47:46,520 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:47:46,520 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:47:46,521 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:47:46,521 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:47:46,521 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:47:46,522 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:47:46,522 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:47:46,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:47:46,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:47:46,522 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:47:46,523 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:47:46,523 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:47:46,523 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:47:46,523 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:47:46,523 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:47:46,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:47:46,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:47:46,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:47:46,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:47:46,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:47:46,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:47:46,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:47:46,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:47:46,525 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:47:46,526 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:47:46,526 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:47:46,526 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:47:46,526 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:47:46,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:47:46,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:47:46,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:47:46,587 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:47:46,588 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:47:46,588 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label21_false-unreach-call.c [2018-10-26 19:47:46,647 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b28f11ea5/b922e33913184b73bc8941a8d6a06dca/FLAGd01590bf7 [2018-10-26 19:47:47,512 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:47:47,513 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label21_false-unreach-call.c [2018-10-26 19:47:47,556 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b28f11ea5/b922e33913184b73bc8941a8d6a06dca/FLAGd01590bf7 [2018-10-26 19:47:47,571 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b28f11ea5/b922e33913184b73bc8941a8d6a06dca [2018-10-26 19:47:47,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:47:47,585 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:47:47,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:47:47,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:47:47,590 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:47:47,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:47:47" (1/1) ... [2018-10-26 19:47:47,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7670273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:47, skipping insertion in model container [2018-10-26 19:47:47,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:47:47" (1/1) ... [2018-10-26 19:47:47,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:47:47,864 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:47:49,865 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:47:49,871 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:47:51,214 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:47:51,272 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:47:51,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51 WrapperNode [2018-10-26 19:47:51,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:47:51,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:47:51,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:47:51,274 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:47:51,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:51,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:47:52,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:47:52,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:47:52,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:47:52,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:52,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:53,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:53,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:53,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (1/1) ... [2018-10-26 19:47:53,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:47:53,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:47:53,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:47:53,438 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:47:53,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (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 19:47:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:47:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:47:53,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:48:10,062 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:48:10,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:48:10 BoogieIcfgContainer [2018-10-26 19:48:10,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:48:10,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:48:10,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:48:10,069 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:48:10,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:47:47" (1/3) ... [2018-10-26 19:48:10,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412f8048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:48:10, skipping insertion in model container [2018-10-26 19:48:10,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:47:51" (2/3) ... [2018-10-26 19:48:10,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412f8048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:48:10, skipping insertion in model container [2018-10-26 19:48:10,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:48:10" (3/3) ... [2018-10-26 19:48:10,073 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label21_false-unreach-call.c [2018-10-26 19:48:10,082 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:48:10,092 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:48:10,110 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:48:10,162 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:48:10,163 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:48:10,163 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:48:10,163 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:48:10,163 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:48:10,163 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:48:10,164 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:48:10,164 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:48:10,164 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:48:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 19:48:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 19:48:10,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:10,226 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:48:10,229 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:10,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:10,235 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-26 19:48:10,238 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:10,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:10,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:10,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:10,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:10,520 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 19:48:10,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:48:10,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:48:10,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:48:10,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:48:10,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:48:10,548 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 3 states. [2018-10-26 19:48:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:48:32,491 INFO L93 Difference]: Finished difference Result 4922 states and 9316 transitions. [2018-10-26 19:48:32,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:48:32,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-26 19:48:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:48:32,539 INFO L225 Difference]: With dead ends: 4922 [2018-10-26 19:48:32,539 INFO L226 Difference]: Without dead ends: 3169 [2018-10-26 19:48:32,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:48:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2018-10-26 19:48:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3168. [2018-10-26 19:48:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2018-10-26 19:48:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 5255 transitions. [2018-10-26 19:48:32,760 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 5255 transitions. Word has length 16 [2018-10-26 19:48:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:48:32,760 INFO L481 AbstractCegarLoop]: Abstraction has 3168 states and 5255 transitions. [2018-10-26 19:48:32,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:48:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 5255 transitions. [2018-10-26 19:48:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-26 19:48:32,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:48:32,765 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:48:32,765 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:48:32,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:48:32,766 INFO L82 PathProgramCache]: Analyzing trace with hash -388749078, now seen corresponding path program 1 times [2018-10-26 19:48:32,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:48:32,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:48:32,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:32,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:48:32,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:48:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:48:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:48:33,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:48:33,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:48:33,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:48:33,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:48:33,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:48:33,059 INFO L87 Difference]: Start difference. First operand 3168 states and 5255 transitions. Second operand 4 states. [2018-10-26 19:49:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:01,516 INFO L93 Difference]: Finished difference Result 12008 states and 20113 transitions. [2018-10-26 19:49:01,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:49:01,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2018-10-26 19:49:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:01,565 INFO L225 Difference]: With dead ends: 12008 [2018-10-26 19:49:01,565 INFO L226 Difference]: Without dead ends: 8842 [2018-10-26 19:49:01,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:01,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2018-10-26 19:49:01,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 5903. [2018-10-26 19:49:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5903 states. [2018-10-26 19:49:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 9592 transitions. [2018-10-26 19:49:01,734 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 9592 transitions. Word has length 86 [2018-10-26 19:49:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:01,735 INFO L481 AbstractCegarLoop]: Abstraction has 5903 states and 9592 transitions. [2018-10-26 19:49:01,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:49:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 9592 transitions. [2018-10-26 19:49:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-26 19:49:01,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:01,739 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:49:01,739 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:01,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:01,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1312265824, now seen corresponding path program 1 times [2018-10-26 19:49:01,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:01,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:01,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:01,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:01,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:01,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:01,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:49:01,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:49:01,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:49:01,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:49:01,944 INFO L87 Difference]: Start difference. First operand 5903 states and 9592 transitions. Second operand 5 states. [2018-10-26 19:49:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:18,978 INFO L93 Difference]: Finished difference Result 14545 states and 23014 transitions. [2018-10-26 19:49:18,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:49:18,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-26 19:49:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:19,022 INFO L225 Difference]: With dead ends: 14545 [2018-10-26 19:49:19,022 INFO L226 Difference]: Without dead ends: 8644 [2018-10-26 19:49:19,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:49:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8644 states. [2018-10-26 19:49:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8644 to 8640. [2018-10-26 19:49:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8640 states. [2018-10-26 19:49:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8640 states to 8640 states and 12390 transitions. [2018-10-26 19:49:19,196 INFO L78 Accepts]: Start accepts. Automaton has 8640 states and 12390 transitions. Word has length 91 [2018-10-26 19:49:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:19,198 INFO L481 AbstractCegarLoop]: Abstraction has 8640 states and 12390 transitions. [2018-10-26 19:49:19,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:49:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 8640 states and 12390 transitions. [2018-10-26 19:49:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-26 19:49:19,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:19,204 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:49:19,204 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:19,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:19,204 INFO L82 PathProgramCache]: Analyzing trace with hash -235810371, now seen corresponding path program 1 times [2018-10-26 19:49:19,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:19,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:19,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:19,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:19,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:19,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:19,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:49:19,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:49:19,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:49:19,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:19,539 INFO L87 Difference]: Start difference. First operand 8640 states and 12390 transitions. Second operand 4 states. [2018-10-26 19:49:39,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:39,570 INFO L93 Difference]: Finished difference Result 33782 states and 48567 transitions. [2018-10-26 19:49:39,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:49:39,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-10-26 19:49:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:39,638 INFO L225 Difference]: With dead ends: 33782 [2018-10-26 19:49:39,638 INFO L226 Difference]: Without dead ends: 25144 [2018-10-26 19:49:39,654 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 [2018-10-26 19:49:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25144 states. [2018-10-26 19:49:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25144 to 16851. [2018-10-26 19:49:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16851 states. [2018-10-26 19:49:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16851 states to 16851 states and 21746 transitions. [2018-10-26 19:49:39,995 INFO L78 Accepts]: Start accepts. Automaton has 16851 states and 21746 transitions. Word has length 108 [2018-10-26 19:49:39,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:39,996 INFO L481 AbstractCegarLoop]: Abstraction has 16851 states and 21746 transitions. [2018-10-26 19:49:39,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:49:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 16851 states and 21746 transitions. [2018-10-26 19:49:39,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-26 19:49:39,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:39,999 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:49:39,999 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:39,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:39,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1541472050, now seen corresponding path program 1 times [2018-10-26 19:49:39,999 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:40,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:40,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:40,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:40,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:40,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:40,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:49:40,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:49:40,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:49:40,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:40,258 INFO L87 Difference]: Start difference. First operand 16851 states and 21746 transitions. Second operand 4 states. [2018-10-26 19:49:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:49:58,312 INFO L93 Difference]: Finished difference Result 64022 states and 83146 transitions. [2018-10-26 19:49:58,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:49:58,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-26 19:49:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:49:58,401 INFO L225 Difference]: With dead ends: 64022 [2018-10-26 19:49:58,402 INFO L226 Difference]: Without dead ends: 47173 [2018-10-26 19:49:58,434 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 19:49:58,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47173 states. [2018-10-26 19:49:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47173 to 47161. [2018-10-26 19:49:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47161 states. [2018-10-26 19:49:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47161 states to 47161 states and 55554 transitions. [2018-10-26 19:49:59,035 INFO L78 Accepts]: Start accepts. Automaton has 47161 states and 55554 transitions. Word has length 114 [2018-10-26 19:49:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:49:59,035 INFO L481 AbstractCegarLoop]: Abstraction has 47161 states and 55554 transitions. [2018-10-26 19:49:59,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:49:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 47161 states and 55554 transitions. [2018-10-26 19:49:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-26 19:49:59,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:49:59,048 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:49:59,049 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:49:59,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:49:59,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1219595665, now seen corresponding path program 1 times [2018-10-26 19:49:59,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:49:59,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:49:59,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:59,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:49:59,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:49:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:49:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:49:59,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:49:59,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:49:59,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:49:59,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:49:59,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:49:59,514 INFO L87 Difference]: Start difference. First operand 47161 states and 55554 transitions. Second operand 4 states. [2018-10-26 19:50:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:22,174 INFO L93 Difference]: Finished difference Result 125772 states and 151183 transitions. [2018-10-26 19:50:22,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:50:22,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-26 19:50:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:22,321 INFO L225 Difference]: With dead ends: 125772 [2018-10-26 19:50:22,322 INFO L226 Difference]: Without dead ends: 78613 [2018-10-26 19:50:22,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 19:50:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78613 states. [2018-10-26 19:50:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78613 to 78602. [2018-10-26 19:50:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78602 states. [2018-10-26 19:50:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78602 states to 78602 states and 91268 transitions. [2018-10-26 19:50:23,778 INFO L78 Accepts]: Start accepts. Automaton has 78602 states and 91268 transitions. Word has length 224 [2018-10-26 19:50:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:23,779 INFO L481 AbstractCegarLoop]: Abstraction has 78602 states and 91268 transitions. [2018-10-26 19:50:23,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:50:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 78602 states and 91268 transitions. [2018-10-26 19:50:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2018-10-26 19:50:23,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:23,801 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:23,802 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:23,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2076658619, now seen corresponding path program 1 times [2018-10-26 19:50:23,802 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:50:23,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:50:23,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:23,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:23,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:24,821 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-26 19:50:25,205 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-10-26 19:50:25,342 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-10-26 19:50:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 19:50:26,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:50:26,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 19:50:26,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:50:26,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:50:26,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:50:26,379 INFO L87 Difference]: Start difference. First operand 78602 states and 91268 transitions. Second operand 8 states. [2018-10-26 19:50:51,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:50:51,688 INFO L93 Difference]: Finished difference Result 217288 states and 253064 transitions. [2018-10-26 19:50:51,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 19:50:51,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 684 [2018-10-26 19:50:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:50:51,877 INFO L225 Difference]: With dead ends: 217288 [2018-10-26 19:50:51,877 INFO L226 Difference]: Without dead ends: 138688 [2018-10-26 19:50:51,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-26 19:50:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138688 states. [2018-10-26 19:50:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138688 to 79968. [2018-10-26 19:50:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79968 states. [2018-10-26 19:50:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79968 states to 79968 states and 92640 transitions. [2018-10-26 19:50:53,828 INFO L78 Accepts]: Start accepts. Automaton has 79968 states and 92640 transitions. Word has length 684 [2018-10-26 19:50:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:50:53,830 INFO L481 AbstractCegarLoop]: Abstraction has 79968 states and 92640 transitions. [2018-10-26 19:50:53,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:50:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 79968 states and 92640 transitions. [2018-10-26 19:50:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2018-10-26 19:50:53,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:50:53,855 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:50:53,855 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:50:53,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:50:53,856 INFO L82 PathProgramCache]: Analyzing trace with hash -319261357, now seen corresponding path program 1 times [2018-10-26 19:50:53,856 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:50:53,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:50:53,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:53,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:50:53,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:50:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:50:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-26 19:50:54,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:50:54,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:50:54,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:50:54,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:50:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:50:54,977 INFO L87 Difference]: Start difference. First operand 79968 states and 92640 transitions. Second operand 5 states. [2018-10-26 19:51:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:51:29,505 INFO L93 Difference]: Finished difference Result 292612 states and 343860 transitions. [2018-10-26 19:51:29,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:51:29,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 803 [2018-10-26 19:51:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:51:29,727 INFO L225 Difference]: With dead ends: 292612 [2018-10-26 19:51:29,728 INFO L226 Difference]: Without dead ends: 214012 [2018-10-26 19:51:29,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:51:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214012 states. [2018-10-26 19:51:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214012 to 159202. [2018-10-26 19:51:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159202 states. [2018-10-26 19:51:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159202 states to 159202 states and 184599 transitions. [2018-10-26 19:51:31,282 INFO L78 Accepts]: Start accepts. Automaton has 159202 states and 184599 transitions. Word has length 803 [2018-10-26 19:51:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:51:31,283 INFO L481 AbstractCegarLoop]: Abstraction has 159202 states and 184599 transitions. [2018-10-26 19:51:31,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:51:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 159202 states and 184599 transitions. [2018-10-26 19:51:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2018-10-26 19:51:31,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:51:31,315 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:51:31,316 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:51:31,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:51:31,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1301963741, now seen corresponding path program 1 times [2018-10-26 19:51:31,316 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:51:31,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:51:31,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:31,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:51:31,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:51:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:51:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2018-10-26 19:51:32,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:51:32,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:51:32,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:51:32,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:51:32,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:51:32,772 INFO L87 Difference]: Start difference. First operand 159202 states and 184599 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 19:51:50,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:51:50,157 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:51:50,162 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:51:50,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:51:50 BoogieIcfgContainer [2018-10-26 19:51:50,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:51:50,164 INFO L168 Benchmark]: Toolchain (without parser) took 242580.23 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 19:51:50,165 INFO L168 Benchmark]: CDTParser took 0.24 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 19:51:50,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3687.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.8 MB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:50,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 1327.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 832.6 MB). Free memory was 991.8 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:50,167 INFO L168 Benchmark]: Boogie Preprocessor took 836.07 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: 105.1 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:50,168 INFO L168 Benchmark]: RCFGBuilder took 16626.69 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 307.8 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 470.4 MB). Peak memory consumption was 778.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:50,169 INFO L168 Benchmark]: TraceAbstraction took 220097.33 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -653.1 MB). Peak memory consumption was 356.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:51:50,175 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 3687.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 991.8 MB in the end (delta: 391.9 MB). Peak memory consumption was 391.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1327.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 832.6 MB). Free memory was 991.8 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 836.07 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: 105.1 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16626.69 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 307.8 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 470.4 MB). Peak memory consumption was 778.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220097.33 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -653.1 MB). Peak memory consumption was 356.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (159202states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (295200 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 220.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 206.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12564 SDtfs, 36540 SDslu, 8810 SDs, 0 SdLazy, 73512 SolverSat, 22128 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 178.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159202occurred 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: 6.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 124790 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 3024 NumberOfCodeBlocks, 3024 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3015 ConstructedInterpolants, 0 QuantifiedInterpolants, 7099135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1118/1118 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown