java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:24:42,560 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:24:42,563 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:24:42,578 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:24:42,579 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:24:42,580 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:24:42,581 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:24:42,583 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:24:42,584 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:24:42,585 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:24:42,586 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:24:42,586 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:24:42,587 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:24:42,588 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:24:42,589 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:24:42,590 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:24:42,591 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:24:42,593 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:24:42,595 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:24:42,597 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:24:42,598 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:24:42,599 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:24:42,601 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:24:42,602 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:24:42,602 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:24:42,603 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:24:42,604 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:24:42,607 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:24:42,608 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:24:42,610 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:24:42,611 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:24:42,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 21:24:42,615 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:24:42,639 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:24:42,639 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:24:42,640 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:24:42,641 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:24:42,641 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:24:42,641 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:24:42,642 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:24:42,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:24:42,642 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:24:42,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:24:42,642 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:24:42,643 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:24:42,643 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:24:42,643 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:24:42,643 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:24:42,644 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:24:42,644 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:24:42,644 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:24:42,644 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:24:42,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:24:42,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:24:42,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:24:42,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:24:42,645 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:24:42,645 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:24:42,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:24:42,646 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:24:42,646 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:24:42,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:24:42,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:24:42,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:24:42,724 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:24:42,724 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:24:42,725 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-10-26 21:24:42,798 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/71599b423/e39c2730aa6b4c8482d761d11efb1fcb/FLAGd8c041ce3 [2018-10-26 21:24:43,641 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:24:43,642 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-10-26 21:24:43,680 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/71599b423/e39c2730aa6b4c8482d761d11efb1fcb/FLAGd8c041ce3 [2018-10-26 21:24:43,699 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/71599b423/e39c2730aa6b4c8482d761d11efb1fcb [2018-10-26 21:24:43,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:24:43,714 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:24:43,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:24:43,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:24:43,721 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:24:43,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:24:43" (1/1) ... [2018-10-26 21:24:43,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2874412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:43, skipping insertion in model container [2018-10-26 21:24:43,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:24:43" (1/1) ... [2018-10-26 21:24:43,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:24:43,923 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:24:45,378 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:24:45,382 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:24:46,250 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:24:46,292 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:24:46,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46 WrapperNode [2018-10-26 21:24:46,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:24:46,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:24:46,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:24:46,296 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:24:46,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:46,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:47,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:24:47,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:24:47,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:24:47,179 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:24:47,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:47,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:47,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:47,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:47,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:47,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:47,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... [2018-10-26 21:24:47,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:24:47,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:24:47,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:24:47,764 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:24:47,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:24:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:24:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:24:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:25:02,098 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:25:02,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:25:02 BoogieIcfgContainer [2018-10-26 21:25:02,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:25:02,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:25:02,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:25:02,104 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:25:02,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:24:43" (1/3) ... [2018-10-26 21:25:02,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719db110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:25:02, skipping insertion in model container [2018-10-26 21:25:02,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:24:46" (2/3) ... [2018-10-26 21:25:02,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719db110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:25:02, skipping insertion in model container [2018-10-26 21:25:02,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:25:02" (3/3) ... [2018-10-26 21:25:02,108 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label15_true-unreach-call.c [2018-10-26 21:25:02,119 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:25:02,129 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:25:02,147 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:25:02,193 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:25:02,194 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:25:02,194 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:25:02,194 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:25:02,194 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:25:02,194 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:25:02,194 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:25:02,194 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:25:02,195 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:25:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 21:25:02,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-26 21:25:02,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:02,245 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:02,248 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:02,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash 680225122, now seen corresponding path program 1 times [2018-10-26 21:25:02,255 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:02,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:02,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:02,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:02,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:25:02,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:02,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:25:02,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:02,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:02,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:02,767 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 21:25:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:19,036 INFO L93 Difference]: Finished difference Result 3993 states and 7498 transitions. [2018-10-26 21:25:19,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:19,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-26 21:25:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:19,088 INFO L225 Difference]: With dead ends: 3993 [2018-10-26 21:25:19,088 INFO L226 Difference]: Without dead ends: 2887 [2018-10-26 21:25:19,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:19,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-10-26 21:25:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1936. [2018-10-26 21:25:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2018-10-26 21:25:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3550 transitions. [2018-10-26 21:25:19,272 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3550 transitions. Word has length 37 [2018-10-26 21:25:19,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:19,272 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 3550 transitions. [2018-10-26 21:25:19,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3550 transitions. [2018-10-26 21:25:19,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-26 21:25:19,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:19,278 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:19,278 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:19,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2124441306, now seen corresponding path program 1 times [2018-10-26 21:25:19,279 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:19,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:19,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:19,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:19,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:25:19,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:19,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:25:19,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:19,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:19,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:19,652 INFO L87 Difference]: Start difference. First operand 1936 states and 3550 transitions. Second operand 4 states. [2018-10-26 21:25:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:35,950 INFO L93 Difference]: Finished difference Result 7120 states and 13344 transitions. [2018-10-26 21:25:35,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:35,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-26 21:25:35,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:35,982 INFO L225 Difference]: With dead ends: 7120 [2018-10-26 21:25:35,982 INFO L226 Difference]: Without dead ends: 5186 [2018-10-26 21:25:35,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2018-10-26 21:25:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3554. [2018-10-26 21:25:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2018-10-26 21:25:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 6248 transitions. [2018-10-26 21:25:36,080 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 6248 transitions. Word has length 106 [2018-10-26 21:25:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:36,081 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 6248 transitions. [2018-10-26 21:25:36,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 6248 transitions. [2018-10-26 21:25:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-26 21:25:36,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:36,085 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:36,085 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:36,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:36,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1046179583, now seen corresponding path program 1 times [2018-10-26 21:25:36,086 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:36,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:36,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:36,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:36,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:25:36,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:36,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:25:36,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:36,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:36,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:36,388 INFO L87 Difference]: Start difference. First operand 3554 states and 6248 transitions. Second operand 4 states. [2018-10-26 21:25:49,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:25:49,212 INFO L93 Difference]: Finished difference Result 12674 states and 22438 transitions. [2018-10-26 21:25:49,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:25:49,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-26 21:25:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:25:49,263 INFO L225 Difference]: With dead ends: 12674 [2018-10-26 21:25:49,263 INFO L226 Difference]: Without dead ends: 9122 [2018-10-26 21:25:49,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2018-10-26 21:25:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 9115. [2018-10-26 21:25:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2018-10-26 21:25:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 14199 transitions. [2018-10-26 21:25:49,439 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 14199 transitions. Word has length 119 [2018-10-26 21:25:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:25:49,440 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 14199 transitions. [2018-10-26 21:25:49,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:25:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 14199 transitions. [2018-10-26 21:25:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-26 21:25:49,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:49,448 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:49,449 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:49,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:49,449 INFO L82 PathProgramCache]: Analyzing trace with hash -171132688, now seen corresponding path program 1 times [2018-10-26 21:25:49,449 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:49,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:49,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:49,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:49,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:49,915 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 21:25:50,346 WARN L179 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 21:25:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:25:50,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:50,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:25:50,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:25:50,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:25:50,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:25:50,495 INFO L87 Difference]: Start difference. First operand 9115 states and 14199 transitions. Second operand 5 states. [2018-10-26 21:26:01,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:01,911 INFO L93 Difference]: Finished difference Result 29264 states and 45079 transitions. [2018-10-26 21:26:01,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:26:01,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-26 21:26:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:01,980 INFO L225 Difference]: With dead ends: 29264 [2018-10-26 21:26:01,981 INFO L226 Difference]: Without dead ends: 20151 [2018-10-26 21:26:01,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:26:02,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2018-10-26 21:26:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 20149. [2018-10-26 21:26:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20149 states. [2018-10-26 21:26:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 28284 transitions. [2018-10-26 21:26:02,461 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 28284 transitions. Word has length 140 [2018-10-26 21:26:02,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:02,461 INFO L481 AbstractCegarLoop]: Abstraction has 20149 states and 28284 transitions. [2018-10-26 21:26:02,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:26:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 28284 transitions. [2018-10-26 21:26:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-26 21:26:02,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:02,464 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:26:02,464 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:02,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:02,464 INFO L82 PathProgramCache]: Analyzing trace with hash -621884010, now seen corresponding path program 1 times [2018-10-26 21:26:02,465 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:02,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:02,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:02,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:02,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-26 21:26:02,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:26:02,725 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:26:02,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:02,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:26:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-26 21:26:03,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:26:03,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 21:26:03,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:26:03,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:26:03,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:03,031 INFO L87 Difference]: Start difference. First operand 20149 states and 28284 transitions. Second operand 5 states. [2018-10-26 21:26:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:19,863 INFO L93 Difference]: Finished difference Result 70270 states and 99699 transitions. [2018-10-26 21:26:19,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:26:19,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-10-26 21:26:19,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:19,961 INFO L225 Difference]: With dead ends: 70270 [2018-10-26 21:26:19,962 INFO L226 Difference]: Without dead ends: 50911 [2018-10-26 21:26:19,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50911 states. [2018-10-26 21:26:20,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50911 to 50886. [2018-10-26 21:26:20,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50886 states. [2018-10-26 21:26:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50886 states to 50886 states and 65786 transitions. [2018-10-26 21:26:20,812 INFO L78 Accepts]: Start accepts. Automaton has 50886 states and 65786 transitions. Word has length 163 [2018-10-26 21:26:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:20,814 INFO L481 AbstractCegarLoop]: Abstraction has 50886 states and 65786 transitions. [2018-10-26 21:26:20,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:26:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 50886 states and 65786 transitions. [2018-10-26 21:26:20,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-10-26 21:26:20,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:20,841 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:26:20,841 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:20,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:20,841 INFO L82 PathProgramCache]: Analyzing trace with hash -12343617, now seen corresponding path program 1 times [2018-10-26 21:26:20,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:20,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:20,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:20,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:20,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-26 21:26:21,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:21,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:26:21,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:26:21,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:26:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:26:21,267 INFO L87 Difference]: Start difference. First operand 50886 states and 65786 transitions. Second operand 3 states. [2018-10-26 21:26:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:27,952 INFO L93 Difference]: Finished difference Result 140377 states and 182260 transitions. [2018-10-26 21:26:27,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:26:27,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 451 [2018-10-26 21:26:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:28,054 INFO L225 Difference]: With dead ends: 140377 [2018-10-26 21:26:28,054 INFO L226 Difference]: Without dead ends: 90281 [2018-10-26 21:26:28,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:26:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90281 states. [2018-10-26 21:26:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90281 to 90277. [2018-10-26 21:26:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90277 states. [2018-10-26 21:26:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90277 states to 90277 states and 109583 transitions. [2018-10-26 21:26:29,171 INFO L78 Accepts]: Start accepts. Automaton has 90277 states and 109583 transitions. Word has length 451 [2018-10-26 21:26:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:29,171 INFO L481 AbstractCegarLoop]: Abstraction has 90277 states and 109583 transitions. [2018-10-26 21:26:29,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:26:29,171 INFO L276 IsEmpty]: Start isEmpty. Operand 90277 states and 109583 transitions. [2018-10-26 21:26:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-26 21:26:29,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:29,204 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:26:29,205 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:29,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:29,205 INFO L82 PathProgramCache]: Analyzing trace with hash 919668609, now seen corresponding path program 1 times [2018-10-26 21:26:29,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:29,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:29,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:29,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:29,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 280 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-26 21:26:29,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:26:29,693 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:26:29,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:29,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:26:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-26 21:26:30,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:26:30,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:26:30,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:26:30,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:26:30,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:30,137 INFO L87 Difference]: Start difference. First operand 90277 states and 109583 transitions. Second operand 4 states. [2018-10-26 21:26:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:40,494 INFO L93 Difference]: Finished difference Result 216837 states and 260197 transitions. [2018-10-26 21:26:40,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:26:40,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-10-26 21:26:40,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:40,694 INFO L225 Difference]: With dead ends: 216837 [2018-10-26 21:26:40,694 INFO L226 Difference]: Without dead ends: 127350 [2018-10-26 21:26:40,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127350 states. [2018-10-26 21:26:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127350 to 112340. [2018-10-26 21:26:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112340 states. [2018-10-26 21:26:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112340 states to 112340 states and 132973 transitions. [2018-10-26 21:26:42,721 INFO L78 Accepts]: Start accepts. Automaton has 112340 states and 132973 transitions. Word has length 478 [2018-10-26 21:26:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:42,722 INFO L481 AbstractCegarLoop]: Abstraction has 112340 states and 132973 transitions. [2018-10-26 21:26:42,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:26:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 112340 states and 132973 transitions. [2018-10-26 21:26:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-10-26 21:26:42,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:42,767 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:26:42,767 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:42,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:42,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1449190218, now seen corresponding path program 1 times [2018-10-26 21:26:42,768 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:42,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:42,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:42,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:42,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-26 21:26:43,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:43,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:26:43,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:26:43,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:26:43,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:43,251 INFO L87 Difference]: Start difference. First operand 112340 states and 132973 transitions. Second operand 4 states. [2018-10-26 21:26:52,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:52,293 INFO L93 Difference]: Finished difference Result 233345 states and 275866 transitions. [2018-10-26 21:26:52,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:26:52,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 507 [2018-10-26 21:26:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:52,427 INFO L225 Difference]: With dead ends: 233345 [2018-10-26 21:26:52,427 INFO L226 Difference]: Without dead ends: 105178 [2018-10-26 21:26:52,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105178 states. [2018-10-26 21:26:54,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105178 to 98084. [2018-10-26 21:26:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98084 states. [2018-10-26 21:26:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98084 states to 98084 states and 113509 transitions. [2018-10-26 21:26:54,657 INFO L78 Accepts]: Start accepts. Automaton has 98084 states and 113509 transitions. Word has length 507 [2018-10-26 21:26:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:54,658 INFO L481 AbstractCegarLoop]: Abstraction has 98084 states and 113509 transitions. [2018-10-26 21:26:54,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:26:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 98084 states and 113509 transitions. [2018-10-26 21:26:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-10-26 21:26:54,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:54,678 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 21:26:54,678 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:54,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:54,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1208094930, now seen corresponding path program 1 times [2018-10-26 21:26:54,679 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:54,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:54,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:54,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:54,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-10-26 21:26:55,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:55,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:26:55,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:26:55,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:26:55,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:26:55,345 INFO L87 Difference]: Start difference. First operand 98084 states and 113509 transitions. Second operand 5 states. [2018-10-26 21:27:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:14,085 INFO L93 Difference]: Finished difference Result 279172 states and 323486 transitions. [2018-10-26 21:27:14,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:27:14,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 530 [2018-10-26 21:27:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:14,296 INFO L225 Difference]: With dead ends: 279172 [2018-10-26 21:27:14,296 INFO L226 Difference]: Without dead ends: 181878 [2018-10-26 21:27:14,359 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 [2018-10-26 21:27:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181878 states. [2018-10-26 21:27:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181878 to 178561. [2018-10-26 21:27:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178561 states. [2018-10-26 21:27:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178561 states to 178561 states and 204132 transitions. [2018-10-26 21:27:17,371 INFO L78 Accepts]: Start accepts. Automaton has 178561 states and 204132 transitions. Word has length 530 [2018-10-26 21:27:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:17,372 INFO L481 AbstractCegarLoop]: Abstraction has 178561 states and 204132 transitions. [2018-10-26 21:27:17,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:27:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 178561 states and 204132 transitions. [2018-10-26 21:27:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-10-26 21:27:17,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:17,395 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 21:27:17,396 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:17,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:17,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1080461888, now seen corresponding path program 1 times [2018-10-26 21:27:17,396 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:17,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:17,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:17,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:17,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-10-26 21:27:17,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:27:17,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:27:17,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:27:17,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:27:17,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:17,841 INFO L87 Difference]: Start difference. First operand 178561 states and 204132 transitions. Second operand 4 states. [2018-10-26 21:27:32,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:32,762 INFO L93 Difference]: Finished difference Result 441480 states and 505315 transitions. [2018-10-26 21:27:32,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:27:32,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 580 [2018-10-26 21:27:32,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:33,085 INFO L225 Difference]: With dead ends: 441480 [2018-10-26 21:27:33,085 INFO L226 Difference]: Without dead ends: 263709 [2018-10-26 21:27:33,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263709 states. [2018-10-26 21:27:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263709 to 255783. [2018-10-26 21:27:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255783 states. [2018-10-26 21:27:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255783 states to 255783 states and 285194 transitions. [2018-10-26 21:27:36,932 INFO L78 Accepts]: Start accepts. Automaton has 255783 states and 285194 transitions. Word has length 580 [2018-10-26 21:27:36,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:36,932 INFO L481 AbstractCegarLoop]: Abstraction has 255783 states and 285194 transitions. [2018-10-26 21:27:36,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:27:36,933 INFO L276 IsEmpty]: Start isEmpty. Operand 255783 states and 285194 transitions. [2018-10-26 21:27:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2018-10-26 21:27:36,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:36,954 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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] [2018-10-26 21:27:36,955 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:36,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash -54768319, now seen corresponding path program 1 times [2018-10-26 21:27:36,955 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:36,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:36,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:36,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:36,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:42,961 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 21:27:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 825 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-10-26 21:27:43,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:27:43,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:27:43,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:27:43,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:27:43,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:43,163 INFO L87 Difference]: Start difference. First operand 255783 states and 285194 transitions. Second operand 4 states. [2018-10-26 21:27:55,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:55,392 INFO L93 Difference]: Finished difference Result 509222 states and 567865 transitions. [2018-10-26 21:27:55,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:27:55,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 620 [2018-10-26 21:27:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:55,685 INFO L225 Difference]: With dead ends: 509222 [2018-10-26 21:27:55,685 INFO L226 Difference]: Without dead ends: 254229 [2018-10-26 21:27:56,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254229 states. [2018-10-26 21:27:58,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254229 to 253416. [2018-10-26 21:27:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253416 states. [2018-10-26 21:27:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253416 states to 253416 states and 276457 transitions. [2018-10-26 21:27:59,051 INFO L78 Accepts]: Start accepts. Automaton has 253416 states and 276457 transitions. Word has length 620 [2018-10-26 21:27:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:59,052 INFO L481 AbstractCegarLoop]: Abstraction has 253416 states and 276457 transitions. [2018-10-26 21:27:59,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:27:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 253416 states and 276457 transitions. [2018-10-26 21:27:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-26 21:27:59,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:59,076 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:27:59,076 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:59,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:59,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1989168516, now seen corresponding path program 1 times [2018-10-26 21:27:59,077 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:59,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:59,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:59,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:59,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 746 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-26 21:27:59,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:27:59,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:27:59,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:27:59,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:27:59,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:59,634 INFO L87 Difference]: Start difference. First operand 253416 states and 276457 transitions. Second operand 4 states. [2018-10-26 21:28:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:28:15,285 INFO L93 Difference]: Finished difference Result 593683 states and 648028 transitions. [2018-10-26 21:28:15,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:28:15,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 644 [2018-10-26 21:28:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:28:15,687 INFO L225 Difference]: With dead ends: 593683 [2018-10-26 21:28:15,688 INFO L226 Difference]: Without dead ends: 341057 [2018-10-26 21:28:15,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:28:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341057 states. [2018-10-26 21:28:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341057 to 340122. [2018-10-26 21:28:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340122 states. [2018-10-26 21:28:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340122 states to 340122 states and 369335 transitions. [2018-10-26 21:28:20,332 INFO L78 Accepts]: Start accepts. Automaton has 340122 states and 369335 transitions. Word has length 644 [2018-10-26 21:28:20,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:28:20,332 INFO L481 AbstractCegarLoop]: Abstraction has 340122 states and 369335 transitions. [2018-10-26 21:28:20,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:28:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 340122 states and 369335 transitions. [2018-10-26 21:28:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-10-26 21:28:20,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:28:20,353 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:28:20,353 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:28:20,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:28:20,353 INFO L82 PathProgramCache]: Analyzing trace with hash -186113841, now seen corresponding path program 1 times [2018-10-26 21:28:20,353 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:28:20,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:28:20,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:20,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:20,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 820 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-26 21:28:21,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:28:21,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:28:21,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:28:21,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:28:21,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:28:21,170 INFO L87 Difference]: Start difference. First operand 340122 states and 369335 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 21:28:27,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:28:27,921 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:28:27,926 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:28:27,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:28:27 BoogieIcfgContainer [2018-10-26 21:28:27,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:28:27,927 INFO L168 Benchmark]: Toolchain (without parser) took 224215.17 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -877.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-26 21:28:27,929 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-26 21:28:27,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2578.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 21:28:27,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 882.76 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-26 21:28:27,931 INFO L168 Benchmark]: Boogie Preprocessor took 585.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 75.6 MB). Peak memory consumption was 75.6 MB. Max. memory is 7.1 GB. [2018-10-26 21:28:27,932 INFO L168 Benchmark]: RCFGBuilder took 14336.11 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 232.8 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 589.3 MB. Max. memory is 7.1 GB. [2018-10-26 21:28:27,933 INFO L168 Benchmark]: TraceAbstraction took 205826.10 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -208.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-26 21:28:27,939 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2578.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 882.76 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 585.93 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 75.6 MB). Peak memory consumption was 75.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14336.11 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 232.8 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 589.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205826.10 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -208.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 120). Cancelled while BasicCegarLoop was constructing difference of abstraction (340122states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (119205 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 205.7s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 171.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9690 SDtfs, 27254 SDslu, 3344 SDs, 0 SdLazy, 59942 SolverSat, 15884 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 136.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 692 GetRequests, 656 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340122occurred in iteration=12, 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: 20.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 37716 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 5.5s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 5679 NumberOfCodeBlocks, 5679 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5664 ConstructedInterpolants, 0 QuantifiedInterpolants, 5570796 SizeOfPredicates, 1 NumberOfNonLiveVariables, 828 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 6391/6399 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown