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/Problem17_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:53:36,299 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:53:36,301 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:53:36,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:53:36,313 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:53:36,314 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:53:36,315 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:53:36,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:53:36,319 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:53:36,320 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:53:36,320 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:53:36,321 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:53:36,322 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:53:36,323 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:53:36,324 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:53:36,325 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:53:36,326 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:53:36,327 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:53:36,329 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:53:36,331 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:53:36,332 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:53:36,333 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:53:36,336 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:53:36,336 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:53:36,336 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:53:36,337 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:53:36,338 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:53:36,339 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:53:36,340 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:53:36,341 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:53:36,341 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:53:36,342 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:53:36,344 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:53:36,359 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:53:36,359 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:53:36,360 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:53:36,361 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:53:36,361 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:53:36,362 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:53:36,362 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:53:36,362 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:53:36,362 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:53:36,362 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:53:36,363 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:53:36,363 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:53:36,363 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:53:36,363 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:53:36,363 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:53:36,364 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:53:36,364 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:53:36,364 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:53:36,364 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:53:36,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:53:36,364 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:53:36,365 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:53:36,365 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:53:36,365 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:53:36,365 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:53:36,365 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:53:36,366 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:53:36,366 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:53:36,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:53:36,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:53:36,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:53:36,427 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:53:36,428 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:53:36,428 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-10-24 16:53:36,487 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6558f1927/fbae4576986b43c190c29084a461f228/FLAG34af6f8c5 [2018-10-24 16:53:37,209 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:53:37,210 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-10-24 16:53:37,239 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6558f1927/fbae4576986b43c190c29084a461f228/FLAG34af6f8c5 [2018-10-24 16:53:37,263 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6558f1927/fbae4576986b43c190c29084a461f228 [2018-10-24 16:53:37,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:53:37,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:53:37,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:53:37,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:53:37,283 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:53:37,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:53:37" (1/1) ... [2018-10-24 16:53:37,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19182326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:37, skipping insertion in model container [2018-10-24 16:53:37,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:53:37" (1/1) ... [2018-10-24 16:53:37,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:53:37,418 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:53:38,351 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:53:38,356 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:53:38,768 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:53:38,792 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:53:38,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38 WrapperNode [2018-10-24 16:53:38,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:53:38,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:53:38,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:53:38,794 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:53:38,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:38,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:39,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:53:39,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:53:39,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:53:39,379 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:53:39,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:39,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:39,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:39,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:39,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:39,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:39,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... [2018-10-24 16:53:39,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:53:39,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:53:39,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:53:39,726 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:53:39,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:53:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:53:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:53:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:53:51,582 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:53:51,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:53:51 BoogieIcfgContainer [2018-10-24 16:53:51,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:53:51,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:53:51,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:53:51,592 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:53:51,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:53:37" (1/3) ... [2018-10-24 16:53:51,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff37e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:53:51, skipping insertion in model container [2018-10-24 16:53:51,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:38" (2/3) ... [2018-10-24 16:53:51,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff37e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:53:51, skipping insertion in model container [2018-10-24 16:53:51,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:53:51" (3/3) ... [2018-10-24 16:53:51,601 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59_true-unreach-call.c [2018-10-24 16:53:51,611 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:53:51,623 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:53:51,642 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:53:51,684 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:53:51,685 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:53:51,685 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:53:51,686 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:53:51,686 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:53:51,686 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:53:51,686 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:53:51,686 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:53:51,686 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:53:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:53:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-24 16:53:51,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:51,729 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] [2018-10-24 16:53:51,732 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:51,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:51,738 INFO L82 PathProgramCache]: Analyzing trace with hash 575043410, now seen corresponding path program 1 times [2018-10-24 16:53:51,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:51,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:51,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:51,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:51,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:52,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:53:52,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:53:52,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:53:52,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:53:52,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:52,134 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:54:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:01,429 INFO L93 Difference]: Finished difference Result 2124 states and 3951 transitions. [2018-10-24 16:54:01,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:54:01,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-24 16:54:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:01,471 INFO L225 Difference]: With dead ends: 2124 [2018-10-24 16:54:01,471 INFO L226 Difference]: Without dead ends: 1526 [2018-10-24 16:54:01,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:54:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2018-10-24 16:54:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1032. [2018-10-24 16:54:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-10-24 16:54:01,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1858 transitions. [2018-10-24 16:54:01,607 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1858 transitions. Word has length 33 [2018-10-24 16:54:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:01,608 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1858 transitions. [2018-10-24 16:54:01,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:54:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1858 transitions. [2018-10-24 16:54:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 16:54:01,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:01,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:01,613 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:01,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:01,614 INFO L82 PathProgramCache]: Analyzing trace with hash 820803097, now seen corresponding path program 1 times [2018-10-24 16:54:01,614 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:01,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:01,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:01,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:01,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:54:01,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:54:01,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:54:01,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:54:01,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:54:01,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:54:01,847 INFO L87 Difference]: Start difference. First operand 1032 states and 1858 transitions. Second operand 4 states. [2018-10-24 16:54:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:11,183 INFO L93 Difference]: Finished difference Result 2924 states and 5354 transitions. [2018-10-24 16:54:11,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:54:11,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-24 16:54:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:11,195 INFO L225 Difference]: With dead ends: 2924 [2018-10-24 16:54:11,195 INFO L226 Difference]: Without dead ends: 1894 [2018-10-24 16:54:11,198 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 [2018-10-24 16:54:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2018-10-24 16:54:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1894. [2018-10-24 16:54:11,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1894 states. [2018-10-24 16:54:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2838 transitions. [2018-10-24 16:54:11,242 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2838 transitions. Word has length 101 [2018-10-24 16:54:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:11,243 INFO L481 AbstractCegarLoop]: Abstraction has 1894 states and 2838 transitions. [2018-10-24 16:54:11,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:54:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2838 transitions. [2018-10-24 16:54:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 16:54:11,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:11,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:11,247 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:11,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:11,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1739872998, now seen corresponding path program 1 times [2018-10-24 16:54:11,248 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:11,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:11,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:11,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:11,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:54:11,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:54:11,509 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:54:11,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:11,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:54:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:54:11,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:54:11,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:54:11,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:54:11,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:54:11,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:54:11,883 INFO L87 Difference]: Start difference. First operand 1894 states and 2838 transitions. Second operand 6 states. [2018-10-24 16:54:26,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:26,406 INFO L93 Difference]: Finished difference Result 7665 states and 11401 transitions. [2018-10-24 16:54:26,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:54:26,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-24 16:54:26,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:26,427 INFO L225 Difference]: With dead ends: 7665 [2018-10-24 16:54:26,428 INFO L226 Difference]: Without dead ends: 3983 [2018-10-24 16:54:26,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:54:26,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2018-10-24 16:54:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3981. [2018-10-24 16:54:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3981 states. [2018-10-24 16:54:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 4944 transitions. [2018-10-24 16:54:26,515 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 4944 transitions. Word has length 104 [2018-10-24 16:54:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:26,516 INFO L481 AbstractCegarLoop]: Abstraction has 3981 states and 4944 transitions. [2018-10-24 16:54:26,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:54:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 4944 transitions. [2018-10-24 16:54:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-24 16:54:26,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:26,523 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:26,524 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:26,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:26,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1172872533, now seen corresponding path program 1 times [2018-10-24 16:54:26,524 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:26,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:26,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:26,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:26,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-24 16:54:26,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:54:26,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:54:26,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:54:26,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:54:26,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:54:26,828 INFO L87 Difference]: Start difference. First operand 3981 states and 4944 transitions. Second operand 3 states. [2018-10-24 16:54:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:34,693 INFO L93 Difference]: Finished difference Result 10084 states and 12888 transitions. [2018-10-24 16:54:34,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:54:34,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2018-10-24 16:54:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:34,723 INFO L225 Difference]: With dead ends: 10084 [2018-10-24 16:54:34,723 INFO L226 Difference]: Without dead ends: 6540 [2018-10-24 16:54:34,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:54:34,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6540 states. [2018-10-24 16:54:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6540 to 6540. [2018-10-24 16:54:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6540 states. [2018-10-24 16:54:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6540 states to 6540 states and 7960 transitions. [2018-10-24 16:54:34,845 INFO L78 Accepts]: Start accepts. Automaton has 6540 states and 7960 transitions. Word has length 254 [2018-10-24 16:54:34,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:34,846 INFO L481 AbstractCegarLoop]: Abstraction has 6540 states and 7960 transitions. [2018-10-24 16:54:34,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:54:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 6540 states and 7960 transitions. [2018-10-24 16:54:34,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-10-24 16:54:34,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:34,852 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:54:34,853 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:34,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:34,853 INFO L82 PathProgramCache]: Analyzing trace with hash 747201884, now seen corresponding path program 1 times [2018-10-24 16:54:34,853 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:34,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:34,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:34,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:34,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 345 proven. 83 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-10-24 16:54:35,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:54:35,461 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 [2018-10-24 16:54:35,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:35,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:54:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 345 proven. 83 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-10-24 16:54:35,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:54:35,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-24 16:54:35,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:54:35,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:54:35,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:54:35,932 INFO L87 Difference]: Start difference. First operand 6540 states and 7960 transitions. Second operand 7 states. [2018-10-24 16:54:50,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:50,713 INFO L93 Difference]: Finished difference Result 25891 states and 31137 transitions. [2018-10-24 16:54:50,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:54:50,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2018-10-24 16:54:50,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:50,770 INFO L225 Difference]: With dead ends: 25891 [2018-10-24 16:54:50,771 INFO L226 Difference]: Without dead ends: 16759 [2018-10-24 16:54:50,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:54:50,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2018-10-24 16:54:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 16319. [2018-10-24 16:54:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16319 states. [2018-10-24 16:54:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16319 states to 16319 states and 18499 transitions. [2018-10-24 16:54:51,030 INFO L78 Accepts]: Start accepts. Automaton has 16319 states and 18499 transitions. Word has length 359 [2018-10-24 16:54:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:51,031 INFO L481 AbstractCegarLoop]: Abstraction has 16319 states and 18499 transitions. [2018-10-24 16:54:51,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:54:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 16319 states and 18499 transitions. [2018-10-24 16:54:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-10-24 16:54:51,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:51,062 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:51,062 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:51,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:51,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1685108873, now seen corresponding path program 1 times [2018-10-24 16:54:51,063 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:51,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:51,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:51,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:51,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2018-10-24 16:54:51,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:54:51,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:54:51,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:54:51,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:54:51,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:54:51,709 INFO L87 Difference]: Start difference. First operand 16319 states and 18499 transitions. Second operand 3 states. [2018-10-24 16:54:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:55,214 INFO L93 Difference]: Finished difference Result 43301 states and 49461 transitions. [2018-10-24 16:54:55,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:54:55,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 664 [2018-10-24 16:54:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:55,264 INFO L225 Difference]: With dead ends: 43301 [2018-10-24 16:54:55,264 INFO L226 Difference]: Without dead ends: 27410 [2018-10-24 16:54:55,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:54:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27410 states. [2018-10-24 16:54:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27410 to 26967. [2018-10-24 16:54:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26967 states. [2018-10-24 16:54:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26967 states to 26967 states and 30793 transitions. [2018-10-24 16:54:55,842 INFO L78 Accepts]: Start accepts. Automaton has 26967 states and 30793 transitions. Word has length 664 [2018-10-24 16:54:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:55,843 INFO L481 AbstractCegarLoop]: Abstraction has 26967 states and 30793 transitions. [2018-10-24 16:54:55,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:54:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 26967 states and 30793 transitions. [2018-10-24 16:54:55,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2018-10-24 16:54:55,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:55,892 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:55,892 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:55,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:55,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1407889680, now seen corresponding path program 1 times [2018-10-24 16:54:55,893 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:55,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:55,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:55,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:55,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:54:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-10-24 16:54:56,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:54:56,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:54:56,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:54:56,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:54:56,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:54:56,703 INFO L87 Difference]: Start difference. First operand 26967 states and 30793 transitions. Second operand 3 states. [2018-10-24 16:54:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:54:58,497 INFO L93 Difference]: Finished difference Result 52635 states and 59987 transitions. [2018-10-24 16:54:58,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:54:58,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 720 [2018-10-24 16:54:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:54:58,546 INFO L225 Difference]: With dead ends: 52635 [2018-10-24 16:54:58,546 INFO L226 Difference]: Without dead ends: 26095 [2018-10-24 16:54:58,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:54:58,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26095 states. [2018-10-24 16:54:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26095 to 26092. [2018-10-24 16:54:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26092 states. [2018-10-24 16:54:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26092 states to 26092 states and 29609 transitions. [2018-10-24 16:54:58,908 INFO L78 Accepts]: Start accepts. Automaton has 26092 states and 29609 transitions. Word has length 720 [2018-10-24 16:54:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:54:58,910 INFO L481 AbstractCegarLoop]: Abstraction has 26092 states and 29609 transitions. [2018-10-24 16:54:58,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:54:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 26092 states and 29609 transitions. [2018-10-24 16:54:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2018-10-24 16:54:59,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:54:59,271 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:54:59,271 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:54:59,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:54:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1558401779, now seen corresponding path program 1 times [2018-10-24 16:54:59,272 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:54:59,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:54:59,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:59,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:54:59,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:54:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 371 proven. 132 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2018-10-24 16:55:00,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:55:00,813 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 [2018-10-24 16:55:00,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:01,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:55:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 725 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-10-24 16:55:02,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:55:02,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:55:02,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:55:02,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:55:02,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:55:02,147 INFO L87 Difference]: Start difference. First operand 26092 states and 29609 transitions. Second operand 5 states. [2018-10-24 16:55:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:55:07,234 INFO L93 Difference]: Finished difference Result 53460 states and 60886 transitions. [2018-10-24 16:55:07,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:55:07,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 782 [2018-10-24 16:55:07,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:55:07,280 INFO L225 Difference]: With dead ends: 53460 [2018-10-24 16:55:07,281 INFO L226 Difference]: Without dead ends: 27796 [2018-10-24 16:55:07,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:55:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27796 states. [2018-10-24 16:55:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27796 to 25240. [2018-10-24 16:55:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25240 states. [2018-10-24 16:55:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25240 states to 25240 states and 28533 transitions. [2018-10-24 16:55:07,633 INFO L78 Accepts]: Start accepts. Automaton has 25240 states and 28533 transitions. Word has length 782 [2018-10-24 16:55:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:55:07,634 INFO L481 AbstractCegarLoop]: Abstraction has 25240 states and 28533 transitions. [2018-10-24 16:55:07,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:55:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 25240 states and 28533 transitions. [2018-10-24 16:55:07,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2018-10-24 16:55:07,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:55:07,673 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:55:07,673 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:55:07,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:55:07,674 INFO L82 PathProgramCache]: Analyzing trace with hash 195927953, now seen corresponding path program 1 times [2018-10-24 16:55:07,674 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:55:07,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:55:07,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:07,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:07,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:08,541 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-24 16:55:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 598 proven. 83 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2018-10-24 16:55:09,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:55:09,376 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:55:09,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:09,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:55:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 598 proven. 83 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2018-10-24 16:55:10,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:55:10,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-24 16:55:10,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:55:10,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:55:10,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:55:10,843 INFO L87 Difference]: Start difference. First operand 25240 states and 28533 transitions. Second operand 9 states. [2018-10-24 16:55:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:55:21,743 INFO L93 Difference]: Finished difference Result 53038 states and 59763 transitions. [2018-10-24 16:55:21,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:55:21,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 808 [2018-10-24 16:55:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:55:21,786 INFO L225 Difference]: With dead ends: 53038 [2018-10-24 16:55:21,786 INFO L226 Difference]: Without dead ends: 28226 [2018-10-24 16:55:21,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:55:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28226 states. [2018-10-24 16:55:22,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28226 to 28222. [2018-10-24 16:55:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28222 states. [2018-10-24 16:55:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28222 states to 28222 states and 31621 transitions. [2018-10-24 16:55:22,125 INFO L78 Accepts]: Start accepts. Automaton has 28222 states and 31621 transitions. Word has length 808 [2018-10-24 16:55:22,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:55:22,126 INFO L481 AbstractCegarLoop]: Abstraction has 28222 states and 31621 transitions. [2018-10-24 16:55:22,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:55:22,126 INFO L276 IsEmpty]: Start isEmpty. Operand 28222 states and 31621 transitions. [2018-10-24 16:55:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2018-10-24 16:55:22,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:55:22,156 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:55:22,156 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:55:22,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:55:22,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1932019546, now seen corresponding path program 1 times [2018-10-24 16:55:22,157 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:55:22,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:55:22,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:22,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:22,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:22,957 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 5 [2018-10-24 16:55:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 1043 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2018-10-24 16:55:23,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:55:23,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:55:23,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:55:23,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:55:23,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:55:23,754 INFO L87 Difference]: Start difference. First operand 28222 states and 31621 transitions. Second operand 4 states. [2018-10-24 16:55:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:55:27,907 INFO L93 Difference]: Finished difference Result 68802 states and 77554 transitions. [2018-10-24 16:55:27,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:55:27,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 884 [2018-10-24 16:55:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:55:27,956 INFO L225 Difference]: With dead ends: 68802 [2018-10-24 16:55:27,956 INFO L226 Difference]: Without dead ends: 41434 [2018-10-24 16:55:27,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:55:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41434 states. [2018-10-24 16:55:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41434 to 33755. [2018-10-24 16:55:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33755 states. [2018-10-24 16:55:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33755 states to 33755 states and 37710 transitions. [2018-10-24 16:55:28,397 INFO L78 Accepts]: Start accepts. Automaton has 33755 states and 37710 transitions. Word has length 884 [2018-10-24 16:55:28,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:55:28,398 INFO L481 AbstractCegarLoop]: Abstraction has 33755 states and 37710 transitions. [2018-10-24 16:55:28,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:55:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 33755 states and 37710 transitions. [2018-10-24 16:55:28,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2018-10-24 16:55:28,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:55:28,419 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:55:28,420 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:55:28,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:55:28,420 INFO L82 PathProgramCache]: Analyzing trace with hash 526120070, now seen corresponding path program 1 times [2018-10-24 16:55:28,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:55:28,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:55:28,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:28,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:28,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 16:55:29,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:55:29,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:55:29,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:55:29,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:55:29,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:55:29,847 INFO L87 Difference]: Start difference. First operand 33755 states and 37710 transitions. Second operand 5 states. [2018-10-24 16:55:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:55:35,750 INFO L93 Difference]: Finished difference Result 85428 states and 95351 transitions. [2018-10-24 16:55:35,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:55:35,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 895 [2018-10-24 16:55:35,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:55:35,815 INFO L225 Difference]: With dead ends: 85428 [2018-10-24 16:55:35,816 INFO L226 Difference]: Without dead ends: 52101 [2018-10-24 16:55:35,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:55:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52101 states. [2018-10-24 16:55:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52101 to 43573. [2018-10-24 16:55:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43573 states. [2018-10-24 16:55:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43573 states to 43573 states and 48353 transitions. [2018-10-24 16:55:36,276 INFO L78 Accepts]: Start accepts. Automaton has 43573 states and 48353 transitions. Word has length 895 [2018-10-24 16:55:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:55:36,277 INFO L481 AbstractCegarLoop]: Abstraction has 43573 states and 48353 transitions. [2018-10-24 16:55:36,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:55:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 43573 states and 48353 transitions. [2018-10-24 16:55:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2018-10-24 16:55:36,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:55:36,310 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:55:36,311 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:55:36,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:55:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash 707144241, now seen corresponding path program 1 times [2018-10-24 16:55:36,311 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:55:36,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:55:36,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:36,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:36,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:55:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1571 backedges. 823 proven. 404 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2018-10-24 16:55:37,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:55:37,710 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:55:37,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:55:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:55:37,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:55:43,498 WARN L179 SmtUtils]: Spent 5.40 s on a formula simplification. DAG size of input: 120 DAG size of output: 23 [2018-10-24 16:55:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1571 backedges. 734 proven. 0 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2018-10-24 16:55:45,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:55:45,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:55:45,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:55:45,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:55:45,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:55:45,130 INFO L87 Difference]: Start difference. First operand 43573 states and 48353 transitions. Second operand 7 states. [2018-10-24 16:55:47,513 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-24 16:55:54,120 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 27 Received shutdown request... [2018-10-24 16:57:47,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 16:57:47,391 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:57:47,396 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:57:47,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:57:47 BoogieIcfgContainer [2018-10-24 16:57:47,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:57:47,397 INFO L168 Benchmark]: Toolchain (without parser) took 250120.93 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 776.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:47,398 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:57:47,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1514.66 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:47,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 584.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -921.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:47,401 INFO L168 Benchmark]: Boogie Preprocessor took 346.65 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:47,401 INFO L168 Benchmark]: RCFGBuilder took 11857.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 478.8 MB). Peak memory consumption was 478.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:47,402 INFO L168 Benchmark]: TraceAbstraction took 235812.22 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 250.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:47,409 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1514.66 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 584.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -921.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 346.65 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11857.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 478.8 MB). Peak memory consumption was 478.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235812.22 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 250.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 104). Cancelled while BasicCegarLoop was constructing difference of abstraction (43573states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (20120 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 235.7s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 210.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3565 SDtfs, 13553 SDslu, 1914 SDs, 0 SdLazy, 40553 SolverSat, 4810 SolverUnsat, 49 SolverUnknown, 0 SolverNotchecked, 196.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3009 GetRequests, 2961 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43573occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 20149 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 9457 NumberOfCodeBlocks, 9457 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 9440 ConstructedInterpolants, 200 QuantifiedInterpolants, 26465504 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3660 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 12317/13215 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown