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/Problem12_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:04:29,394 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:04:29,398 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:04:29,413 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:04:29,413 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:04:29,415 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:04:29,417 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:04:29,420 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:04:29,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:04:29,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:04:29,427 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:04:29,428 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:04:29,429 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:04:29,430 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:04:29,431 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:04:29,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:04:29,434 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:04:29,437 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:04:29,447 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:04:29,450 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:04:29,451 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:04:29,452 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:04:29,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:04:29,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:04:29,456 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:04:29,457 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:04:29,458 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:04:29,459 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:04:29,461 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:04:29,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:04:29,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:04:29,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:04:29,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:04:29,466 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:04:29,468 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:04:29,469 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:04:29,469 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 14:04:29,502 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:04:29,502 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:04:29,503 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:04:29,503 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:04:29,503 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:04:29,504 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:04:29,505 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:04:29,505 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:04:29,505 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:04:29,505 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:04:29,506 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:04:29,506 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:04:29,506 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:04:29,506 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:04:29,506 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:04:29,507 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:04:29,508 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:04:29,508 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:04:29,508 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:04:29,509 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:04:29,509 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:04:29,509 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:04:29,509 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:04:29,509 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:04:29,510 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:04:29,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:04:29,510 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:04:29,510 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:04:29,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:04:29,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:04:29,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:04:29,575 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:04:29,575 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:04:29,576 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label38_false-unreach-call.c [2018-10-24 14:04:29,659 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c596ee9c/3dc6a1aced1c45e4927703f212c1f882/FLAG8ec400c5f [2018-10-24 14:04:30,405 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:04:30,406 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label38_false-unreach-call.c [2018-10-24 14:04:30,438 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c596ee9c/3dc6a1aced1c45e4927703f212c1f882/FLAG8ec400c5f [2018-10-24 14:04:30,459 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c596ee9c/3dc6a1aced1c45e4927703f212c1f882 [2018-10-24 14:04:30,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:04:30,473 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:04:30,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:04:30,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:04:30,480 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:04:30,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:30" (1/1) ... [2018-10-24 14:04:30,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:30, skipping insertion in model container [2018-10-24 14:04:30,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:30" (1/1) ... [2018-10-24 14:04:30,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:04:30,656 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:04:31,910 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:04:31,915 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:04:32,606 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:04:32,640 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:04:32,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32 WrapperNode [2018-10-24 14:04:32,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:04:32,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:04:32,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:04:32,642 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:04:32,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:32,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:33,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:04:33,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:04:33,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:04:33,286 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:04:33,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:33,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:33,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:33,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:33,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:33,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:33,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (1/1) ... [2018-10-24 14:04:33,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:04:33,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:04:33,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:04:33,828 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:04:33,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (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 14:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:04:33,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:04:42,331 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:04:42,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:42 BoogieIcfgContainer [2018-10-24 14:04:42,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:04:42,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:04:42,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:04:42,336 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:04:42,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:04:30" (1/3) ... [2018-10-24 14:04:42,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b58d601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:42, skipping insertion in model container [2018-10-24 14:04:42,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:32" (2/3) ... [2018-10-24 14:04:42,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b58d601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:42, skipping insertion in model container [2018-10-24 14:04:42,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:42" (3/3) ... [2018-10-24 14:04:42,341 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label38_false-unreach-call.c [2018-10-24 14:04:42,351 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:04:42,360 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:04:42,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:04:42,419 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:04:42,420 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:04:42,420 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:04:42,421 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:04:42,421 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:04:42,421 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:04:42,421 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:04:42,421 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:04:42,421 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:04:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 14:04:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-24 14:04:42,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:42,479 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] [2018-10-24 14:04:42,484 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:42,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:42,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1473047758, now seen corresponding path program 1 times [2018-10-24 14:04:42,496 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:42,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:42,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:42,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:42,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:42,782 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 14:04:42,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:42,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:04:42,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:42,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:42,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:42,809 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 14:04:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:04:55,930 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 14:04:55,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:04:55,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-24 14:04:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:04:55,980 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 14:04:55,980 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 14:04:55,988 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 14:04:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 14:04:56,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 14:04:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 14:04:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-10-24 14:04:56,143 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 25 [2018-10-24 14:04:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:04:56,144 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-10-24 14:04:56,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:04:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-10-24 14:04:56,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 14:04:56,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:56,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:56,148 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:56,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:56,149 INFO L82 PathProgramCache]: Analyzing trace with hash -510627501, now seen corresponding path program 1 times [2018-10-24 14:04:56,149 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:56,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:56,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:56,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:56,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:56,643 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-24 14:04:56,947 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-24 14:04:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:04:57,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:57,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:04:57,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:04:57,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:04:57,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:04:57,129 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-10-24 14:05:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:16,588 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-10-24 14:05:16,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:05:16,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2018-10-24 14:05:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:16,627 INFO L225 Difference]: With dead ends: 9904 [2018-10-24 14:05:16,627 INFO L226 Difference]: Without dead ends: 7586 [2018-10-24 14:05:16,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:05:16,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-10-24 14:05:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-10-24 14:05:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-10-24 14:05:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-10-24 14:05:16,762 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 91 [2018-10-24 14:05:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:16,763 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-10-24 14:05:16,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:05:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-10-24 14:05:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 14:05:16,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:16,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:16,767 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:16,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:16,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1345815394, now seen corresponding path program 1 times [2018-10-24 14:05:16,768 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:16,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:16,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:16,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:16,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:16,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:16,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:05:16,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:05:16,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:05:16,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:16,882 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 4 states. [2018-10-24 14:05:26,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:26,271 INFO L93 Difference]: Finished difference Result 21182 states and 34370 transitions. [2018-10-24 14:05:26,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:26,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2018-10-24 14:05:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:26,339 INFO L225 Difference]: With dead ends: 21182 [2018-10-24 14:05:26,339 INFO L226 Difference]: Without dead ends: 15104 [2018-10-24 14:05:26,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 14:05:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15104 states. [2018-10-24 14:05:26,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15104 to 15104. [2018-10-24 14:05:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15104 states. [2018-10-24 14:05:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15104 states to 15104 states and 21564 transitions. [2018-10-24 14:05:26,611 INFO L78 Accepts]: Start accepts. Automaton has 15104 states and 21564 transitions. Word has length 97 [2018-10-24 14:05:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:26,612 INFO L481 AbstractCegarLoop]: Abstraction has 15104 states and 21564 transitions. [2018-10-24 14:05:26,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand 15104 states and 21564 transitions. [2018-10-24 14:05:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-24 14:05:26,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:26,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:26,616 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:26,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash 707408411, now seen corresponding path program 1 times [2018-10-24 14:05:26,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:26,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:26,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:26,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:26,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:27,002 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 14:05:27,272 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-24 14:05:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:27,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:05:27,380 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 14:05:27,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:27,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:05:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:27,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:05:27,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-24 14:05:27,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:05:27,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:05:27,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:05:27,711 INFO L87 Difference]: Start difference. First operand 15104 states and 21564 transitions. Second operand 8 states. [2018-10-24 14:05:49,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:49,503 INFO L93 Difference]: Finished difference Result 45247 states and 63267 transitions. [2018-10-24 14:05:49,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:05:49,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2018-10-24 14:05:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:49,574 INFO L225 Difference]: With dead ends: 45247 [2018-10-24 14:05:49,575 INFO L226 Difference]: Without dead ends: 30145 [2018-10-24 14:05:49,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:05:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30145 states. [2018-10-24 14:05:50,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30145 to 28640. [2018-10-24 14:05:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28640 states. [2018-10-24 14:05:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28640 states to 28640 states and 37080 transitions. [2018-10-24 14:05:50,098 INFO L78 Accepts]: Start accepts. Automaton has 28640 states and 37080 transitions. Word has length 171 [2018-10-24 14:05:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:50,098 INFO L481 AbstractCegarLoop]: Abstraction has 28640 states and 37080 transitions. [2018-10-24 14:05:50,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:05:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 28640 states and 37080 transitions. [2018-10-24 14:05:50,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-24 14:05:50,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:50,112 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:05:50,113 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:50,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash -630267684, now seen corresponding path program 1 times [2018-10-24 14:05:50,113 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:50,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:50,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:50,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:50,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 14:05:50,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:05:50,838 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 14:05:50,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:50,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:05:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-24 14:05:51,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:05:51,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 14:05:51,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:05:51,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:05:51,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:05:51,257 INFO L87 Difference]: Start difference. First operand 28640 states and 37080 transitions. Second operand 5 states. [2018-10-24 14:06:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:02,795 INFO L93 Difference]: Finished difference Result 64798 states and 84680 transitions. [2018-10-24 14:06:02,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:06:02,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2018-10-24 14:06:02,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:02,860 INFO L225 Difference]: With dead ends: 64798 [2018-10-24 14:06:02,861 INFO L226 Difference]: Without dead ends: 36160 [2018-10-24 14:06:02,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:06:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36160 states. [2018-10-24 14:06:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36160 to 36160. [2018-10-24 14:06:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36160 states. [2018-10-24 14:06:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36160 states to 36160 states and 43591 transitions. [2018-10-24 14:06:03,361 INFO L78 Accepts]: Start accepts. Automaton has 36160 states and 43591 transitions. Word has length 362 [2018-10-24 14:06:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:03,362 INFO L481 AbstractCegarLoop]: Abstraction has 36160 states and 43591 transitions. [2018-10-24 14:06:03,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:06:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 36160 states and 43591 transitions. [2018-10-24 14:06:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-10-24 14:06:03,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:03,385 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:06:03,385 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:03,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:03,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1587040806, now seen corresponding path program 1 times [2018-10-24 14:06:03,386 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:03,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:03,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:03,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:03,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:03,883 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 14:06:04,228 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-24 14:06:04,755 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-10-24 14:06:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 217 proven. 5 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 14:06:04,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:06:04,973 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 14:06:05,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:05,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:06:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-24 14:06:05,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:06:05,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 14:06:05,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:06:05,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:06:05,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:06:05,482 INFO L87 Difference]: Start difference. First operand 36160 states and 43591 transitions. Second operand 7 states. [2018-10-24 14:06:23,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:23,028 INFO L93 Difference]: Finished difference Result 146037 states and 174962 transitions. [2018-10-24 14:06:23,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:06:23,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2018-10-24 14:06:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:23,152 INFO L225 Difference]: With dead ends: 146037 [2018-10-24 14:06:23,152 INFO L226 Difference]: Without dead ends: 80497 [2018-10-24 14:06:23,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 376 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:06:23,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80497 states. [2018-10-24 14:06:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80497 to 58684. [2018-10-24 14:06:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58684 states. [2018-10-24 14:06:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58684 states to 58684 states and 64746 transitions. [2018-10-24 14:06:23,941 INFO L78 Accepts]: Start accepts. Automaton has 58684 states and 64746 transitions. Word has length 375 [2018-10-24 14:06:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:23,942 INFO L481 AbstractCegarLoop]: Abstraction has 58684 states and 64746 transitions. [2018-10-24 14:06:23,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:06:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 58684 states and 64746 transitions. [2018-10-24 14:06:23,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-24 14:06:23,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:23,958 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:23,958 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:23,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:23,959 INFO L82 PathProgramCache]: Analyzing trace with hash 751558680, now seen corresponding path program 1 times [2018-10-24 14:06:23,959 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:23,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:23,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:23,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:23,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-24 14:06:24,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:24,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:06:24,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:06:24,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:06:24,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:06:24,694 INFO L87 Difference]: Start difference. First operand 58684 states and 64746 transitions. Second operand 5 states. [2018-10-24 14:06:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:37,748 INFO L93 Difference]: Finished difference Result 172277 states and 190503 transitions. [2018-10-24 14:06:37,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:06:37,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 442 [2018-10-24 14:06:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:37,908 INFO L225 Difference]: With dead ends: 172277 [2018-10-24 14:06:37,908 INFO L226 Difference]: Without dead ends: 113595 [2018-10-24 14:06:37,955 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 [2018-10-24 14:06:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113595 states. [2018-10-24 14:06:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113595 to 93291. [2018-10-24 14:06:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93291 states. [2018-10-24 14:06:38,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93291 states to 93291 states and 100810 transitions. [2018-10-24 14:06:38,918 INFO L78 Accepts]: Start accepts. Automaton has 93291 states and 100810 transitions. Word has length 442 [2018-10-24 14:06:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:38,919 INFO L481 AbstractCegarLoop]: Abstraction has 93291 states and 100810 transitions. [2018-10-24 14:06:38,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:06:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 93291 states and 100810 transitions. [2018-10-24 14:06:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2018-10-24 14:06:39,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:39,090 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:06:39,090 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:39,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:39,091 INFO L82 PathProgramCache]: Analyzing trace with hash 954687590, now seen corresponding path program 1 times [2018-10-24 14:06:39,091 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:39,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:39,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:39,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:39,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 533 proven. 5 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 14:06:40,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:06:40,357 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 14:06:40,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:40,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:06:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 523 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-24 14:06:41,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:06:41,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:06:41,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:06:41,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:06:41,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:06:41,110 INFO L87 Difference]: Start difference. First operand 93291 states and 100810 transitions. Second operand 5 states. [2018-10-24 14:06:54,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:54,680 INFO L93 Difference]: Finished difference Result 233190 states and 252731 transitions. [2018-10-24 14:06:54,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:06:54,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 981 [2018-10-24 14:06:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:54,818 INFO L225 Difference]: With dead ends: 233190 [2018-10-24 14:06:54,818 INFO L226 Difference]: Without dead ends: 139901 [2018-10-24 14:06:54,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 983 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:06:54,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139901 states. [2018-10-24 14:06:56,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139901 to 138397. [2018-10-24 14:06:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138397 states. [2018-10-24 14:06:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138397 states to 138397 states and 147212 transitions. [2018-10-24 14:06:56,729 INFO L78 Accepts]: Start accepts. Automaton has 138397 states and 147212 transitions. Word has length 981 [2018-10-24 14:06:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:56,730 INFO L481 AbstractCegarLoop]: Abstraction has 138397 states and 147212 transitions. [2018-10-24 14:06:56,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:06:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 138397 states and 147212 transitions. [2018-10-24 14:06:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2018-10-24 14:06:56,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:56,807 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:56,807 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:56,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:56,808 INFO L82 PathProgramCache]: Analyzing trace with hash -245116372, now seen corresponding path program 1 times [2018-10-24 14:06:56,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:56,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:56,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:56,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:56,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 69 proven. 354 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-24 14:06:58,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:06:58,411 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 14:06:58,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:59,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:07:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 91 proven. 332 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-10-24 14:07:00,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:07:00,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-24 14:07:00,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:07:00,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:07:00,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:07:00,063 INFO L87 Difference]: Start difference. First operand 138397 states and 147212 transitions. Second operand 7 states. [2018-10-24 14:07:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:27,128 INFO L93 Difference]: Finished difference Result 389600 states and 414077 transitions. [2018-10-24 14:07:27,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:07:27,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1009 [2018-10-24 14:07:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:27,477 INFO L225 Difference]: With dead ends: 389600 [2018-10-24 14:07:27,477 INFO L226 Difference]: Without dead ends: 251205 [2018-10-24 14:07:27,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 1007 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:07:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251205 states. [2018-10-24 14:07:30,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251205 to 189534. [2018-10-24 14:07:30,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189534 states. [2018-10-24 14:07:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189534 states to 189534 states and 201870 transitions. [2018-10-24 14:07:30,374 INFO L78 Accepts]: Start accepts. Automaton has 189534 states and 201870 transitions. Word has length 1009 [2018-10-24 14:07:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:30,376 INFO L481 AbstractCegarLoop]: Abstraction has 189534 states and 201870 transitions. [2018-10-24 14:07:30,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:07:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 189534 states and 201870 transitions. [2018-10-24 14:07:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2018-10-24 14:07:30,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:30,485 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:07:30,485 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:30,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:30,486 INFO L82 PathProgramCache]: Analyzing trace with hash -922072515, now seen corresponding path program 1 times [2018-10-24 14:07:30,486 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:30,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:30,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:30,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:30,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 681 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-24 14:07:32,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:32,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:07:32,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:07:32,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:07:32,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:07:32,337 INFO L87 Difference]: Start difference. First operand 189534 states and 201870 transitions. Second operand 3 states. [2018-10-24 14:07:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:38,941 INFO L93 Difference]: Finished difference Result 394854 states and 420887 transitions. [2018-10-24 14:07:38,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:07:38,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1027 [2018-10-24 14:07:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:39,170 INFO L225 Difference]: With dead ends: 394854 [2018-10-24 14:07:39,171 INFO L226 Difference]: Without dead ends: 205322 [2018-10-24 14:07:39,238 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 14:07:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205322 states. [2018-10-24 14:07:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205322 to 202314. [2018-10-24 14:07:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202314 states. [2018-10-24 14:07:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202314 states to 202314 states and 214677 transitions. [2018-10-24 14:07:40,918 INFO L78 Accepts]: Start accepts. Automaton has 202314 states and 214677 transitions. Word has length 1027 [2018-10-24 14:07:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:40,919 INFO L481 AbstractCegarLoop]: Abstraction has 202314 states and 214677 transitions. [2018-10-24 14:07:40,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:07:40,919 INFO L276 IsEmpty]: Start isEmpty. Operand 202314 states and 214677 transitions. [2018-10-24 14:07:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2018-10-24 14:07:40,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:40,990 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:07:40,990 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:40,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:40,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1642438618, now seen corresponding path program 1 times [2018-10-24 14:07:40,991 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:40,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:40,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:40,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:40,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-24 14:07:42,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:42,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:42,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:42,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:42,777 INFO L87 Difference]: Start difference. First operand 202314 states and 214677 transitions. Second operand 4 states. [2018-10-24 14:07:53,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:53,804 INFO L93 Difference]: Finished difference Result 405377 states and 430109 transitions. [2018-10-24 14:07:53,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:07:53,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1036 [2018-10-24 14:07:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:54,036 INFO L225 Difference]: With dead ends: 405377 [2018-10-24 14:07:54,037 INFO L226 Difference]: Without dead ends: 192523 [2018-10-24 14:07:54,113 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 [2018-10-24 14:07:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192523 states. [2018-10-24 14:07:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192523 to 182746. [2018-10-24 14:07:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182746 states. [2018-10-24 14:07:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182746 states to 182746 states and 190432 transitions. [2018-10-24 14:07:57,055 INFO L78 Accepts]: Start accepts. Automaton has 182746 states and 190432 transitions. Word has length 1036 [2018-10-24 14:07:57,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:57,055 INFO L481 AbstractCegarLoop]: Abstraction has 182746 states and 190432 transitions. [2018-10-24 14:07:57,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:57,055 INFO L276 IsEmpty]: Start isEmpty. Operand 182746 states and 190432 transitions. [2018-10-24 14:07:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2018-10-24 14:07:57,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:57,146 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:57,146 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:57,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:57,147 INFO L82 PathProgramCache]: Analyzing trace with hash 149901139, now seen corresponding path program 1 times [2018-10-24 14:07:57,147 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:57,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:57,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:57,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:57,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 920 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-10-24 14:07:58,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:58,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:58,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:58,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:58,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:58,440 INFO L87 Difference]: Start difference. First operand 182746 states and 190432 transitions. Second operand 4 states. [2018-10-24 14:08:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:10,102 INFO L93 Difference]: Finished difference Result 385042 states and 401456 transitions. [2018-10-24 14:08:10,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:08:10,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1114 [2018-10-24 14:08:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:08:10,303 INFO L225 Difference]: With dead ends: 385042 [2018-10-24 14:08:10,304 INFO L226 Difference]: Without dead ends: 207562 [2018-10-24 14:08:10,379 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 [2018-10-24 14:08:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207562 states. [2018-10-24 14:08:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207562 to 185002. [2018-10-24 14:08:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185002 states. [2018-10-24 14:08:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185002 states to 185002 states and 190216 transitions. [2018-10-24 14:08:12,649 INFO L78 Accepts]: Start accepts. Automaton has 185002 states and 190216 transitions. Word has length 1114 [2018-10-24 14:08:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:08:12,649 INFO L481 AbstractCegarLoop]: Abstraction has 185002 states and 190216 transitions. [2018-10-24 14:08:12,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:08:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 185002 states and 190216 transitions. [2018-10-24 14:08:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2018-10-24 14:08:12,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:12,736 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:12,737 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:12,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:12,737 INFO L82 PathProgramCache]: Analyzing trace with hash -291427069, now seen corresponding path program 1 times [2018-10-24 14:08:12,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:12,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:12,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:12,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:12,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-24 14:08:18,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:18,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-24 14:08:18,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:08:18,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:08:18,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:08:18,691 INFO L87 Difference]: Start difference. First operand 185002 states and 190216 transitions. Second operand 10 states. Received shutdown request... [2018-10-24 14:08:19,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 14:08:19,905 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:08:19,912 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:08:19,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:08:19 BoogieIcfgContainer [2018-10-24 14:08:19,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:08:19,913 INFO L168 Benchmark]: Toolchain (without parser) took 229441.25 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 14:08:19,914 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:08:19,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2166.86 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:19,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 643.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.4 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 69.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:19,916 INFO L168 Benchmark]: Boogie Preprocessor took 541.39 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:19,917 INFO L168 Benchmark]: RCFGBuilder took 8504.79 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 202.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -152.7 MB). Peak memory consumption was 619.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:19,918 INFO L168 Benchmark]: TraceAbstraction took 217579.12 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -724.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 14:08:19,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2166.86 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 643.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.4 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 69.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 541.39 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8504.79 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 202.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -152.7 MB). Peak memory consumption was 619.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217579.12 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -724.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 84). Cancelled while BasicCegarLoop was constructing difference of abstraction (185002states) and FLOYD_HOARE automaton (currently 2 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (142 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 217.5s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 179.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5457 SDtfs, 38975 SDslu, 1270 SDs, 0 SdLazy, 84247 SolverSat, 18215 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 143.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2985 GetRequests, 2912 SyntacticMatches, 16 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202314occurred in iteration=10, 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: 14.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 143648 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 10774 NumberOfCodeBlocks, 10774 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 10756 ConstructedInterpolants, 0 QuantifiedInterpolants, 35462956 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3498 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 7224/8013 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown