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/Problem15_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:31:01,312 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:31:01,314 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:31:01,329 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:31:01,330 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:31:01,331 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:31:01,332 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:31:01,334 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:31:01,336 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:31:01,336 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:31:01,337 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:31:01,338 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:31:01,339 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:31:01,340 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:31:01,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:31:01,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:31:01,342 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:31:01,344 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:31:01,346 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:31:01,348 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:31:01,349 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:31:01,350 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:31:01,352 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:31:01,361 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:31:01,391 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:31:01,392 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:31:01,393 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:31:01,393 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:31:01,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:31:01,394 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:31:01,395 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:31:01,395 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:31:01,395 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:31:01,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:31:01,396 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:31:01,396 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:31:01,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:31:01,396 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:31:01,397 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:31:01,397 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:31:01,397 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:31:01,397 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:31:01,397 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:31:01,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:31:01,398 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:31:01,398 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:31:01,398 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:31:01,398 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:31:01,399 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:31:01,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:31:01,400 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:31:01,400 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:31:01,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:31:01,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:31:01,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:31:01,474 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:31:01,474 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:31:01,475 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-10-23 20:31:01,539 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48bd3f95a/6f4bb4e24f2d42e789e962352db69112/FLAGff7d0d723 [2018-10-23 20:31:02,299 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:31:02,300 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-10-23 20:31:02,319 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48bd3f95a/6f4bb4e24f2d42e789e962352db69112/FLAGff7d0d723 [2018-10-23 20:31:02,337 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48bd3f95a/6f4bb4e24f2d42e789e962352db69112 [2018-10-23 20:31:02,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:31:02,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:31:02,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:31:02,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:31:02,355 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:31:02,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:31:02" (1/1) ... [2018-10-23 20:31:02,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7fca2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:02, skipping insertion in model container [2018-10-23 20:31:02,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:31:02" (1/1) ... [2018-10-23 20:31:02,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:31:02,464 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:31:03,214 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:31:03,219 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:31:03,510 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:31:03,533 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:31:03,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03 WrapperNode [2018-10-23 20:31:03,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:31:03,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:31:03,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:31:03,537 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:31:03,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:03,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:03,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:31:03,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:31:03,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:31:03,927 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:31:03,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:03,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:03,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:03,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:04,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:04,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:04,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (1/1) ... [2018-10-23 20:31:04,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:31:04,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:31:04,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:31:04,134 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:31:04,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (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 [2018-10-23 20:31:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:31:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:31:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:31:11,963 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:31:11,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:31:11 BoogieIcfgContainer [2018-10-23 20:31:11,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:31:11,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:31:11,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:31:11,969 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:31:11,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:31:02" (1/3) ... [2018-10-23 20:31:11,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb9387a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:31:11, skipping insertion in model container [2018-10-23 20:31:11,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:03" (2/3) ... [2018-10-23 20:31:11,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb9387a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:31:11, skipping insertion in model container [2018-10-23 20:31:11,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:31:11" (3/3) ... [2018-10-23 20:31:11,973 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label19_true-unreach-call.c [2018-10-23 20:31:11,983 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:31:11,992 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:31:12,010 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:31:12,049 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:31:12,050 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:31:12,050 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:31:12,050 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:31:12,051 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:31:12,051 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:31:12,051 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:31:12,051 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:31:12,051 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:31:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-23 20:31:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-23 20:31:12,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:12,089 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:31:12,092 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:12,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:12,098 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-10-23 20:31:12,100 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:12,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:12,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:12,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:12,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:31:12,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:31:12,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:31:12,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:31:12,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:31:12,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:12,652 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-23 20:31:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:19,520 INFO L93 Difference]: Finished difference Result 1518 states and 2794 transitions. [2018-10-23 20:31:19,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:31:19,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-23 20:31:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:19,554 INFO L225 Difference]: With dead ends: 1518 [2018-10-23 20:31:19,554 INFO L226 Difference]: Without dead ends: 1086 [2018-10-23 20:31:19,560 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 [2018-10-23 20:31:19,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2018-10-23 20:31:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 739. [2018-10-23 20:31:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2018-10-23 20:31:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1331 transitions. [2018-10-23 20:31:19,667 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1331 transitions. Word has length 46 [2018-10-23 20:31:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:19,667 INFO L481 AbstractCegarLoop]: Abstraction has 739 states and 1331 transitions. [2018-10-23 20:31:19,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:31:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1331 transitions. [2018-10-23 20:31:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-23 20:31:19,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:19,675 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:31:19,675 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:19,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:19,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1128912517, now seen corresponding path program 1 times [2018-10-23 20:31:19,679 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:19,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:19,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:19,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:19,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:31:20,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:31:20,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:31:20,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:31:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:31:20,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:31:20,207 INFO L87 Difference]: Start difference. First operand 739 states and 1331 transitions. Second operand 5 states. [2018-10-23 20:31:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:35,297 INFO L93 Difference]: Finished difference Result 2460 states and 4483 transitions. [2018-10-23 20:31:35,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:31:35,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-23 20:31:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:35,309 INFO L225 Difference]: With dead ends: 2460 [2018-10-23 20:31:35,309 INFO L226 Difference]: Without dead ends: 1723 [2018-10-23 20:31:35,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:31:35,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2018-10-23 20:31:35,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1052. [2018-10-23 20:31:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-23 20:31:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1780 transitions. [2018-10-23 20:31:35,353 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1780 transitions. Word has length 112 [2018-10-23 20:31:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:35,354 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1780 transitions. [2018-10-23 20:31:35,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:31:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1780 transitions. [2018-10-23 20:31:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 20:31:35,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:35,357 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:31:35,358 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:35,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:35,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1432151457, now seen corresponding path program 1 times [2018-10-23 20:31:35,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:35,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:35,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:35,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:35,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:31:35,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:31:35,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:31:35,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:31:35,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:31:35,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:35,537 INFO L87 Difference]: Start difference. First operand 1052 states and 1780 transitions. Second operand 4 states. [2018-10-23 20:31:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:40,071 INFO L93 Difference]: Finished difference Result 3969 states and 6821 transitions. [2018-10-23 20:31:40,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:31:40,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-23 20:31:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:40,090 INFO L225 Difference]: With dead ends: 3969 [2018-10-23 20:31:40,091 INFO L226 Difference]: Without dead ends: 2919 [2018-10-23 20:31:40,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2018-10-23 20:31:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1952. [2018-10-23 20:31:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2018-10-23 20:31:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2939 transitions. [2018-10-23 20:31:40,146 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2939 transitions. Word has length 113 [2018-10-23 20:31:40,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:40,147 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2939 transitions. [2018-10-23 20:31:40,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:31:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2939 transitions. [2018-10-23 20:31:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 20:31:40,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:40,159 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:31:40,160 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:40,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:40,160 INFO L82 PathProgramCache]: Analyzing trace with hash 963376405, now seen corresponding path program 1 times [2018-10-23 20:31:40,160 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:40,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:40,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:40,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:40,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:31:40,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:31:40,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:31:40,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:31:40,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:31:40,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:40,356 INFO L87 Difference]: Start difference. First operand 1952 states and 2939 transitions. Second operand 4 states. [2018-10-23 20:31:44,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:44,976 INFO L93 Difference]: Finished difference Result 7512 states and 11402 transitions. [2018-10-23 20:31:44,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:31:44,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-23 20:31:44,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:45,005 INFO L225 Difference]: With dead ends: 7512 [2018-10-23 20:31:45,006 INFO L226 Difference]: Without dead ends: 5562 [2018-10-23 20:31:45,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2018-10-23 20:31:45,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 5557. [2018-10-23 20:31:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5557 states. [2018-10-23 20:31:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5557 states to 5557 states and 7561 transitions. [2018-10-23 20:31:45,131 INFO L78 Accepts]: Start accepts. Automaton has 5557 states and 7561 transitions. Word has length 117 [2018-10-23 20:31:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:45,132 INFO L481 AbstractCegarLoop]: Abstraction has 5557 states and 7561 transitions. [2018-10-23 20:31:45,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:31:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5557 states and 7561 transitions. [2018-10-23 20:31:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-23 20:31:45,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:45,134 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:31:45,136 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:45,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:45,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1070603446, now seen corresponding path program 1 times [2018-10-23 20:31:45,136 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:45,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:45,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:45,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:45,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:31:45,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:31:45,757 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:31:45,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:45,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:31:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:31:46,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:31:46,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:31:46,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:31:46,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:31:46,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:31:46,304 INFO L87 Difference]: Start difference. First operand 5557 states and 7561 transitions. Second operand 7 states. [2018-10-23 20:32:00,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:00,126 INFO L93 Difference]: Finished difference Result 30094 states and 41019 transitions. [2018-10-23 20:32:00,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:32:00,127 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2018-10-23 20:32:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:00,190 INFO L225 Difference]: With dead ends: 30094 [2018-10-23 20:32:00,190 INFO L226 Difference]: Without dead ends: 16379 [2018-10-23 20:32:00,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:32:00,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16379 states. [2018-10-23 20:32:00,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16379 to 12745. [2018-10-23 20:32:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12745 states. [2018-10-23 20:32:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 15006 transitions. [2018-10-23 20:32:00,488 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 15006 transitions. Word has length 138 [2018-10-23 20:32:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:00,489 INFO L481 AbstractCegarLoop]: Abstraction has 12745 states and 15006 transitions. [2018-10-23 20:32:00,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:32:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 15006 transitions. [2018-10-23 20:32:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-23 20:32:00,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:00,499 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:32:00,499 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:00,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:00,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1154592654, now seen corresponding path program 1 times [2018-10-23 20:32:00,500 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:00,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:00,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:00,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:00,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-23 20:32:01,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:01,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:32:01,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:32:01,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:32:01,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:01,202 INFO L87 Difference]: Start difference. First operand 12745 states and 15006 transitions. Second operand 5 states. [2018-10-23 20:32:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:03,722 INFO L93 Difference]: Finished difference Result 26090 states and 30665 transitions. [2018-10-23 20:32:03,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:32:03,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 366 [2018-10-23 20:32:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:03,753 INFO L225 Difference]: With dead ends: 26090 [2018-10-23 20:32:03,753 INFO L226 Difference]: Without dead ends: 13647 [2018-10-23 20:32:03,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13647 states. [2018-10-23 20:32:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13647 to 13645. [2018-10-23 20:32:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13645 states. [2018-10-23 20:32:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13645 states to 13645 states and 15917 transitions. [2018-10-23 20:32:04,023 INFO L78 Accepts]: Start accepts. Automaton has 13645 states and 15917 transitions. Word has length 366 [2018-10-23 20:32:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:04,024 INFO L481 AbstractCegarLoop]: Abstraction has 13645 states and 15917 transitions. [2018-10-23 20:32:04,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:32:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 13645 states and 15917 transitions. [2018-10-23 20:32:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-10-23 20:32:04,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:04,036 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:32:04,036 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:04,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:04,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1318856182, now seen corresponding path program 1 times [2018-10-23 20:32:04,037 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:04,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:04,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:04,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:04,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-23 20:32:04,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:04,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:32:04,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:32:04,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:32:04,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:04,594 INFO L87 Difference]: Start difference. First operand 13645 states and 15917 transitions. Second operand 4 states. [2018-10-23 20:32:09,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:09,285 INFO L93 Difference]: Finished difference Result 26691 states and 31234 transitions. [2018-10-23 20:32:09,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:32:09,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 425 [2018-10-23 20:32:09,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:09,319 INFO L225 Difference]: With dead ends: 26691 [2018-10-23 20:32:09,319 INFO L226 Difference]: Without dead ends: 13348 [2018-10-23 20:32:09,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13348 states. [2018-10-23 20:32:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13348 to 13041. [2018-10-23 20:32:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13041 states. [2018-10-23 20:32:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13041 states to 13041 states and 14341 transitions. [2018-10-23 20:32:09,519 INFO L78 Accepts]: Start accepts. Automaton has 13041 states and 14341 transitions. Word has length 425 [2018-10-23 20:32:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:09,520 INFO L481 AbstractCegarLoop]: Abstraction has 13041 states and 14341 transitions. [2018-10-23 20:32:09,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:32:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13041 states and 14341 transitions. [2018-10-23 20:32:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-10-23 20:32:09,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:09,534 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2018-10-23 20:32:09,534 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:09,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1483339877, now seen corresponding path program 1 times [2018-10-23 20:32:09,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:09,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:09,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:09,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:09,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:10,198 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:32:10,797 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-10-23 20:32:11,555 WARN L179 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-10-23 20:32:11,910 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 27 [2018-10-23 20:32:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 289 proven. 71 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-23 20:32:12,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:32:12,253 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:32:12,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:12,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:32:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-10-23 20:32:12,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:32:12,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-23 20:32:12,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:32:12,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:32:12,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:32:12,768 INFO L87 Difference]: Start difference. First operand 13041 states and 14341 transitions. Second operand 9 states. [2018-10-23 20:32:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:24,648 INFO L93 Difference]: Finished difference Result 36553 states and 40823 transitions. [2018-10-23 20:32:24,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 20:32:24,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2018-10-23 20:32:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:24,686 INFO L225 Difference]: With dead ends: 36553 [2018-10-23 20:32:24,686 INFO L226 Difference]: Without dead ends: 23814 [2018-10-23 20:32:24,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 517 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-10-23 20:32:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23814 states. [2018-10-23 20:32:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23814 to 21139. [2018-10-23 20:32:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21139 states. [2018-10-23 20:32:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21139 states to 21139 states and 22998 transitions. [2018-10-23 20:32:25,392 INFO L78 Accepts]: Start accepts. Automaton has 21139 states and 22998 transitions. Word has length 510 [2018-10-23 20:32:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:25,393 INFO L481 AbstractCegarLoop]: Abstraction has 21139 states and 22998 transitions. [2018-10-23 20:32:25,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:32:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 21139 states and 22998 transitions. [2018-10-23 20:32:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2018-10-23 20:32:25,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:25,426 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:32:25,426 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:25,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:25,427 INFO L82 PathProgramCache]: Analyzing trace with hash -619661395, now seen corresponding path program 1 times [2018-10-23 20:32:25,427 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:25,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:25,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:25,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:25,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2018-10-23 20:32:26,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:26,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:32:26,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:32:26,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:32:26,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:32:26,138 INFO L87 Difference]: Start difference. First operand 21139 states and 22998 transitions. Second operand 3 states. [2018-10-23 20:32:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:31,256 INFO L93 Difference]: Finished difference Result 48589 states and 52847 transitions. [2018-10-23 20:32:31,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:32:31,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 666 [2018-10-23 20:32:31,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:31,285 INFO L225 Difference]: With dead ends: 48589 [2018-10-23 20:32:31,286 INFO L226 Difference]: Without dead ends: 27752 [2018-10-23 20:32:31,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:32:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27752 states. [2018-10-23 20:32:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27752 to 26237. [2018-10-23 20:32:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26237 states. [2018-10-23 20:32:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26237 states to 26237 states and 28404 transitions. [2018-10-23 20:32:31,621 INFO L78 Accepts]: Start accepts. Automaton has 26237 states and 28404 transitions. Word has length 666 [2018-10-23 20:32:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:31,622 INFO L481 AbstractCegarLoop]: Abstraction has 26237 states and 28404 transitions. [2018-10-23 20:32:31,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:32:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 26237 states and 28404 transitions. [2018-10-23 20:32:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-10-23 20:32:31,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:31,657 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:32:31,658 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:31,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:31,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1256991624, now seen corresponding path program 1 times [2018-10-23 20:32:31,658 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:31,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:31,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:31,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:31,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:32,223 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 20:32:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2018-10-23 20:32:32,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:32,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:32:32,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:32:32,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:32:32,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:32,798 INFO L87 Difference]: Start difference. First operand 26237 states and 28404 transitions. Second operand 5 states. [2018-10-23 20:32:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:37,237 INFO L93 Difference]: Finished difference Result 58786 states and 63444 transitions. [2018-10-23 20:32:37,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:32:37,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 678 [2018-10-23 20:32:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:37,295 INFO L225 Difference]: With dead ends: 58786 [2018-10-23 20:32:37,296 INFO L226 Difference]: Without dead ends: 34053 [2018-10-23 20:32:37,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:37,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34053 states. [2018-10-23 20:32:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34053 to 27141. [2018-10-23 20:32:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27141 states. [2018-10-23 20:32:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27141 states to 27141 states and 29213 transitions. [2018-10-23 20:32:37,662 INFO L78 Accepts]: Start accepts. Automaton has 27141 states and 29213 transitions. Word has length 678 [2018-10-23 20:32:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:37,664 INFO L481 AbstractCegarLoop]: Abstraction has 27141 states and 29213 transitions. [2018-10-23 20:32:37,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:32:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 27141 states and 29213 transitions. [2018-10-23 20:32:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2018-10-23 20:32:37,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:37,685 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:32:37,685 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:37,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1767342769, now seen corresponding path program 1 times [2018-10-23 20:32:37,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:37,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:37,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:37,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:37,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:38,269 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-23 20:32:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-10-23 20:32:38,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:38,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:32:38,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:32:38,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:32:38,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:38,715 INFO L87 Difference]: Start difference. First operand 27141 states and 29213 transitions. Second operand 4 states. [2018-10-23 20:32:42,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:42,936 INFO L93 Difference]: Finished difference Result 69018 states and 74240 transitions. [2018-10-23 20:32:42,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:32:42,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 693 [2018-10-23 20:32:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:42,984 INFO L225 Difference]: With dead ends: 69018 [2018-10-23 20:32:42,985 INFO L226 Difference]: Without dead ends: 43981 [2018-10-23 20:32:43,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43981 states. [2018-10-23 20:32:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43981 to 35238. [2018-10-23 20:32:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35238 states. [2018-10-23 20:32:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35238 states to 35238 states and 37356 transitions. [2018-10-23 20:32:43,393 INFO L78 Accepts]: Start accepts. Automaton has 35238 states and 37356 transitions. Word has length 693 [2018-10-23 20:32:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:43,394 INFO L481 AbstractCegarLoop]: Abstraction has 35238 states and 37356 transitions. [2018-10-23 20:32:43,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:32:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 35238 states and 37356 transitions. [2018-10-23 20:32:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-10-23 20:32:43,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:43,424 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 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] [2018-10-23 20:32:43,424 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:43,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:43,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1823544225, now seen corresponding path program 1 times [2018-10-23 20:32:43,424 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:43,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:43,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:43,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:43,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 1018 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2018-10-23 20:32:44,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:44,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:32:44,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:32:44,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:32:44,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:44,242 INFO L87 Difference]: Start difference. First operand 35238 states and 37356 transitions. Second operand 4 states. [2018-10-23 20:32:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:49,303 INFO L93 Difference]: Finished difference Result 76793 states and 81491 transitions. [2018-10-23 20:32:49,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:32:49,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 826 [2018-10-23 20:32:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:49,345 INFO L225 Difference]: With dead ends: 76793 [2018-10-23 20:32:49,345 INFO L226 Difference]: Without dead ends: 43659 [2018-10-23 20:32:49,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43659 states. [2018-10-23 20:32:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43659 to 36138. [2018-10-23 20:32:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36138 states. [2018-10-23 20:32:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36138 states to 36138 states and 38158 transitions. [2018-10-23 20:32:49,746 INFO L78 Accepts]: Start accepts. Automaton has 36138 states and 38158 transitions. Word has length 826 [2018-10-23 20:32:49,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:49,747 INFO L481 AbstractCegarLoop]: Abstraction has 36138 states and 38158 transitions. [2018-10-23 20:32:49,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:32:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 36138 states and 38158 transitions. [2018-10-23 20:32:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-10-23 20:32:49,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:49,779 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-10-23 20:32:49,779 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:49,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:49,779 INFO L82 PathProgramCache]: Analyzing trace with hash 847052626, now seen corresponding path program 1 times [2018-10-23 20:32:49,780 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:49,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:49,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:49,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:49,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1473 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2018-10-23 20:32:51,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:51,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:32:51,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:32:51,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:32:51,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:51,074 INFO L87 Difference]: Start difference. First operand 36138 states and 38158 transitions. Second operand 5 states. [2018-10-23 20:32:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:56,133 INFO L93 Difference]: Finished difference Result 79794 states and 84363 transitions. [2018-10-23 20:32:56,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:32:56,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2018-10-23 20:32:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:56,176 INFO L225 Difference]: With dead ends: 79794 [2018-10-23 20:32:56,176 INFO L226 Difference]: Without dead ends: 45760 [2018-10-23 20:32:56,194 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 [2018-10-23 20:32:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45760 states. [2018-10-23 20:32:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45760 to 35536. [2018-10-23 20:32:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35536 states. [2018-10-23 20:32:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35536 states to 35536 states and 37464 transitions. [2018-10-23 20:32:56,567 INFO L78 Accepts]: Start accepts. Automaton has 35536 states and 37464 transitions. Word has length 863 [2018-10-23 20:32:56,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:56,568 INFO L481 AbstractCegarLoop]: Abstraction has 35536 states and 37464 transitions. [2018-10-23 20:32:56,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:32:56,568 INFO L276 IsEmpty]: Start isEmpty. Operand 35536 states and 37464 transitions. [2018-10-23 20:32:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2018-10-23 20:32:56,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:56,590 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:32:56,590 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:56,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:56,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1703283928, now seen corresponding path program 1 times [2018-10-23 20:32:56,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:56,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:56,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:56,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:56,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:57,368 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-23 20:32:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 1097 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-10-23 20:32:58,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:58,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:32:58,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:32:58,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:32:58,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:32:58,017 INFO L87 Difference]: Start difference. First operand 35536 states and 37464 transitions. Second operand 6 states. [2018-10-23 20:33:03,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:33:03,255 INFO L93 Difference]: Finished difference Result 79433 states and 83543 transitions. [2018-10-23 20:33:03,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:33:03,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 897 [2018-10-23 20:33:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:33:03,294 INFO L225 Difference]: With dead ends: 79433 [2018-10-23 20:33:03,294 INFO L226 Difference]: Without dead ends: 44199 [2018-10-23 20:33:03,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:33:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44199 states. [2018-10-23 20:33:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44199 to 36405. [2018-10-23 20:33:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36405 states. [2018-10-23 20:33:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36405 states to 36405 states and 38171 transitions. [2018-10-23 20:33:03,701 INFO L78 Accepts]: Start accepts. Automaton has 36405 states and 38171 transitions. Word has length 897 [2018-10-23 20:33:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:33:03,702 INFO L481 AbstractCegarLoop]: Abstraction has 36405 states and 38171 transitions. [2018-10-23 20:33:03,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:33:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 36405 states and 38171 transitions. [2018-10-23 20:33:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2018-10-23 20:33:03,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:33:03,733 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:33:03,733 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:33:03,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:33:03,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1454958507, now seen corresponding path program 1 times [2018-10-23 20:33:03,734 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:33:03,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:33:03,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:33:03,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:33:03,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:33:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:33:04,592 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 20:33:04,818 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 5 [2018-10-23 20:33:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 1179 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-23 20:33:06,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:33:06,772 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:33:06,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:33:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:33:07,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:33:36,598 WARN L179 SmtUtils]: Spent 29.30 s on a formula simplification. DAG size of input: 462 DAG size of output: 151 [2018-10-23 20:33:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 746 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2018-10-23 20:33:39,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:33:39,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-10-23 20:33:39,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:33:39,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:33:39,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:33:39,413 INFO L87 Difference]: Start difference. First operand 36405 states and 38171 transitions. Second operand 8 states. Received shutdown request... [2018-10-23 20:35:05,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:35:05,888 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:35:05,895 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:35:05,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:35:05 BoogieIcfgContainer [2018-10-23 20:35:05,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:35:05,896 INFO L168 Benchmark]: Toolchain (without parser) took 243548.14 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:35:05,898 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:35:05,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1183.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:05,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 390.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:05,900 INFO L168 Benchmark]: Boogie Preprocessor took 206.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:05,900 INFO L168 Benchmark]: RCFGBuilder took 7831.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 323.9 MB). Peak memory consumption was 323.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:05,901 INFO L168 Benchmark]: TraceAbstraction took 233930.08 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -627.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 20:35:05,907 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1183.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 390.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7831.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 323.9 MB). Peak memory consumption was 323.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233930.08 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -627.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (36405states) and FLOYD_HOARE automaton (currently 7 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (5783 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 233.8s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 180.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3648 SDtfs, 15742 SDslu, 2516 SDs, 0 SdLazy, 34783 SolverSat, 6851 SolverUnsat, 42 SolverUnknown, 0 SolverNotchecked, 166.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1656 GetRequests, 1592 SyntacticMatches, 10 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 35.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36405occurred in iteration=14, 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: 3.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 51317 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 42.0s InterpolantComputationTime, 8930 NumberOfCodeBlocks, 8930 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8912 ConstructedInterpolants, 88 QuantifiedInterpolants, 32660957 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1874 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 9804/11097 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown