java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:12:13,319 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:12:13,321 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:12:13,333 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:12:13,333 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:12:13,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:12:13,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:12:13,339 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:12:13,343 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:12:13,344 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:12:13,346 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:12:13,346 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:12:13,347 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:12:13,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:12:13,359 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:12:13,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:12:13,364 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:12:13,368 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:12:13,374 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:12:13,376 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:12:13,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:12:13,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:12:13,387 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:12:13,387 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:12:13,389 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:12:13,390 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:12:13,394 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:12:13,394 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:12:13,395 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:12:13,396 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:12:13,397 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:12:13,400 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:12:13,403 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 14:12:13,418 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:12:13,418 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:12:13,419 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:12:13,419 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:12:13,420 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:12:13,420 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:12:13,420 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:12:13,421 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:12:13,421 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:12:13,421 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:12:13,421 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:12:13,421 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:12:13,422 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:12:13,422 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:12:13,422 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:12:13,422 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:12:13,422 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:12:13,423 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:12:13,423 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:12:13,423 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:12:13,423 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:12:13,423 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:12:13,424 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:12:13,424 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:12:13,424 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:12:13,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:12:13,424 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:12:13,425 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:12:13,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:12:13,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:12:13,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:12:13,492 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:12:13,492 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:12:13,493 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-10-24 14:12:13,557 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/063d77e69/27ff5ea237154e5ba37e09885fc5464c/FLAGa8981f035 [2018-10-24 14:12:14,396 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:12:14,397 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-10-24 14:12:14,435 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/063d77e69/27ff5ea237154e5ba37e09885fc5464c/FLAGa8981f035 [2018-10-24 14:12:14,458 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/063d77e69/27ff5ea237154e5ba37e09885fc5464c [2018-10-24 14:12:14,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:12:14,474 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:12:14,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:12:14,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:12:14,482 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:12:14,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:12:14" (1/1) ... [2018-10-24 14:12:14,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:14, skipping insertion in model container [2018-10-24 14:12:14,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:12:14" (1/1) ... [2018-10-24 14:12:14,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:12:14,685 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:12:16,221 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:12:16,227 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:12:16,933 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:12:16,976 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:12:16,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16 WrapperNode [2018-10-24 14:12:16,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:12:16,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:12:16,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:12:16,981 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:12:16,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:17,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:17,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:12:17,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:12:17,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:12:17,766 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:12:17,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:17,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:17,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:17,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:18,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:18,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:18,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (1/1) ... [2018-10-24 14:12:18,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:12:18,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:12:18,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:12:18,396 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:12:18,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (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 14:12:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:12:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:12:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:12:31,591 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:12:31,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:12:31 BoogieIcfgContainer [2018-10-24 14:12:31,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:12:31,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:12:31,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:12:31,596 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:12:31,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:12:14" (1/3) ... [2018-10-24 14:12:31,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:12:31, skipping insertion in model container [2018-10-24 14:12:31,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:16" (2/3) ... [2018-10-24 14:12:31,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:12:31, skipping insertion in model container [2018-10-24 14:12:31,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:12:31" (3/3) ... [2018-10-24 14:12:31,602 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label44_false-unreach-call.c [2018-10-24 14:12:31,613 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:12:31,624 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:12:31,643 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:12:31,695 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:12:31,696 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:12:31,696 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:12:31,697 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:12:31,697 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:12:31,697 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:12:31,697 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:12:31,697 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:12:31,697 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:12:31,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:12:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 14:12:31,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:31,756 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:31,759 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:31,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:31,766 INFO L82 PathProgramCache]: Analyzing trace with hash -692138422, now seen corresponding path program 1 times [2018-10-24 14:12:31,768 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:31,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:31,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:31,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:31,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:32,239 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 14:12:32,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:32,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:12:32,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:32,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:32,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:32,275 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:12:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:45,910 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-24 14:12:45,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:45,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-24 14:12:45,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:45,973 INFO L225 Difference]: With dead ends: 3863 [2018-10-24 14:12:45,973 INFO L226 Difference]: Without dead ends: 2757 [2018-10-24 14:12:45,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-24 14:12:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-24 14:12:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-24 14:12:46,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-24 14:12:46,177 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 31 [2018-10-24 14:12:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:46,178 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-24 14:12:46,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-24 14:12:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 14:12:46,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:46,189 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:46,189 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:46,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:46,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1047653544, now seen corresponding path program 1 times [2018-10-24 14:12:46,190 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:46,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:46,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:46,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:46,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:12:46,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:46,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:12:46,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:46,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:46,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:46,525 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-24 14:13:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:03,857 INFO L93 Difference]: Finished difference Result 10269 states and 17048 transitions. [2018-10-24 14:13:03,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:03,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-24 14:13:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:03,902 INFO L225 Difference]: With dead ends: 10269 [2018-10-24 14:13:03,903 INFO L226 Difference]: Without dead ends: 7535 [2018-10-24 14:13:03,910 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 14:13:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-10-24 14:13:04,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7527. [2018-10-24 14:13:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7527 states. [2018-10-24 14:13:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 11327 transitions. [2018-10-24 14:13:04,077 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 11327 transitions. Word has length 118 [2018-10-24 14:13:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:04,078 INFO L481 AbstractCegarLoop]: Abstraction has 7527 states and 11327 transitions. [2018-10-24 14:13:04,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 11327 transitions. [2018-10-24 14:13:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 14:13:04,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:04,087 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:04,087 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:04,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:04,087 INFO L82 PathProgramCache]: Analyzing trace with hash -253631191, now seen corresponding path program 1 times [2018-10-24 14:13:04,087 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:04,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:04,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:04,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:04,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:04,575 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 14:13:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 14:13:05,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:13:05,023 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 14:13:05,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:05,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:13:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-24 14:13:05,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:13:05,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-24 14:13:05,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:13:05,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:13:05,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:13:05,492 INFO L87 Difference]: Start difference. First operand 7527 states and 11327 transitions. Second operand 6 states. [2018-10-24 14:13:05,771 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 14:13:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:20,901 INFO L93 Difference]: Finished difference Result 31771 states and 47113 transitions. [2018-10-24 14:13:20,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:13:20,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-24 14:13:20,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:20,991 INFO L225 Difference]: With dead ends: 31771 [2018-10-24 14:13:20,992 INFO L226 Difference]: Without dead ends: 24246 [2018-10-24 14:13:21,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:13:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24246 states. [2018-10-24 14:13:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24246 to 16988. [2018-10-24 14:13:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16988 states. [2018-10-24 14:13:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16988 states to 16988 states and 22868 transitions. [2018-10-24 14:13:21,375 INFO L78 Accepts]: Start accepts. Automaton has 16988 states and 22868 transitions. Word has length 128 [2018-10-24 14:13:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:21,376 INFO L481 AbstractCegarLoop]: Abstraction has 16988 states and 22868 transitions. [2018-10-24 14:13:21,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:13:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 16988 states and 22868 transitions. [2018-10-24 14:13:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-24 14:13:21,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:21,394 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 14:13:21,397 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:21,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:21,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1517224282, now seen corresponding path program 1 times [2018-10-24 14:13:21,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:21,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:21,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:21,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:21,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-24 14:13:21,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:21,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:13:21,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:13:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:13:21,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:13:21,844 INFO L87 Difference]: Start difference. First operand 16988 states and 22868 transitions. Second operand 5 states. [2018-10-24 14:13:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:38,329 INFO L93 Difference]: Finished difference Result 76838 states and 105623 transitions. [2018-10-24 14:13:38,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:13:38,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2018-10-24 14:13:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:38,456 INFO L225 Difference]: With dead ends: 76838 [2018-10-24 14:13:38,457 INFO L226 Difference]: Without dead ends: 60640 [2018-10-24 14:13:38,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:13:38,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60640 states. [2018-10-24 14:13:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60640 to 60479. [2018-10-24 14:13:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60479 states. [2018-10-24 14:13:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60479 states to 60479 states and 78589 transitions. [2018-10-24 14:13:39,442 INFO L78 Accepts]: Start accepts. Automaton has 60479 states and 78589 transitions. Word has length 274 [2018-10-24 14:13:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:39,443 INFO L481 AbstractCegarLoop]: Abstraction has 60479 states and 78589 transitions. [2018-10-24 14:13:39,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:13:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 60479 states and 78589 transitions. [2018-10-24 14:13:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-24 14:13:39,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:39,454 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:13:39,454 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:39,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:39,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1256362251, now seen corresponding path program 1 times [2018-10-24 14:13:39,455 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:39,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:39,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:39,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:39,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 200 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-24 14:13:40,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:13:40,214 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 14:13:40,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:40,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:13:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-24 14:13:40,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:13:40,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 14:13:40,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:40,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:40,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:40,433 INFO L87 Difference]: Start difference. First operand 60479 states and 78589 transitions. Second operand 4 states. [2018-10-24 14:13:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:50,649 INFO L93 Difference]: Finished difference Result 188831 states and 245649 transitions. [2018-10-24 14:13:50,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:50,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 275 [2018-10-24 14:13:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:50,897 INFO L225 Difference]: With dead ends: 188831 [2018-10-24 14:13:50,898 INFO L226 Difference]: Without dead ends: 129142 [2018-10-24 14:13:50,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:51,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129142 states. [2018-10-24 14:13:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129142 to 91995. [2018-10-24 14:13:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91995 states. [2018-10-24 14:13:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91995 states to 91995 states and 114964 transitions. [2018-10-24 14:13:52,912 INFO L78 Accepts]: Start accepts. Automaton has 91995 states and 114964 transitions. Word has length 275 [2018-10-24 14:13:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:52,913 INFO L481 AbstractCegarLoop]: Abstraction has 91995 states and 114964 transitions. [2018-10-24 14:13:52,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 91995 states and 114964 transitions. [2018-10-24 14:13:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-24 14:13:52,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:52,927 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:13:52,927 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:52,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:52,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1897309736, now seen corresponding path program 1 times [2018-10-24 14:13:52,928 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:52,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:52,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:52,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:52,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-24 14:13:53,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:53,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:13:53,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:53,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:53,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:53,435 INFO L87 Difference]: Start difference. First operand 91995 states and 114964 transitions. Second operand 4 states. [2018-10-24 14:14:06,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:06,950 INFO L93 Difference]: Finished difference Result 207672 states and 260835 transitions. [2018-10-24 14:14:06,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:06,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2018-10-24 14:14:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:07,160 INFO L225 Difference]: With dead ends: 207672 [2018-10-24 14:14:07,160 INFO L226 Difference]: Without dead ends: 116467 [2018-10-24 14:14:07,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:07,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116467 states. [2018-10-24 14:14:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116467 to 114843. [2018-10-24 14:14:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114843 states. [2018-10-24 14:14:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114843 states to 114843 states and 136063 transitions. [2018-10-24 14:14:08,457 INFO L78 Accepts]: Start accepts. Automaton has 114843 states and 136063 transitions. Word has length 332 [2018-10-24 14:14:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:08,458 INFO L481 AbstractCegarLoop]: Abstraction has 114843 states and 136063 transitions. [2018-10-24 14:14:08,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 114843 states and 136063 transitions. [2018-10-24 14:14:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-24 14:14:08,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:08,477 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 14:14:08,477 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:08,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:08,477 INFO L82 PathProgramCache]: Analyzing trace with hash -387055667, now seen corresponding path program 1 times [2018-10-24 14:14:08,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:08,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:08,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:08,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:08,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 436 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-24 14:14:09,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:09,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:14:09,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:14:09,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:14:09,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:14:09,079 INFO L87 Difference]: Start difference. First operand 114843 states and 136063 transitions. Second operand 6 states. [2018-10-24 14:14:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:28,782 INFO L93 Difference]: Finished difference Result 289002 states and 341059 transitions. [2018-10-24 14:14:28,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:14:28,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 364 [2018-10-24 14:14:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:28,998 INFO L225 Difference]: With dead ends: 289002 [2018-10-24 14:14:28,999 INFO L226 Difference]: Without dead ends: 174949 [2018-10-24 14:14:29,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:14:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174949 states. [2018-10-24 14:14:31,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174949 to 172477. [2018-10-24 14:14:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172477 states. [2018-10-24 14:14:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172477 states to 172477 states and 201294 transitions. [2018-10-24 14:14:31,577 INFO L78 Accepts]: Start accepts. Automaton has 172477 states and 201294 transitions. Word has length 364 [2018-10-24 14:14:31,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:31,577 INFO L481 AbstractCegarLoop]: Abstraction has 172477 states and 201294 transitions. [2018-10-24 14:14:31,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:14:31,578 INFO L276 IsEmpty]: Start isEmpty. Operand 172477 states and 201294 transitions. [2018-10-24 14:14:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-24 14:14:31,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:31,595 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:14:31,595 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:31,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:31,595 INFO L82 PathProgramCache]: Analyzing trace with hash 264369732, now seen corresponding path program 1 times [2018-10-24 14:14:31,595 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:31,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:31,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:31,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:31,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 14:14:32,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:32,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:14:32,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:32,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:32,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:32,121 INFO L87 Difference]: Start difference. First operand 172477 states and 201294 transitions. Second operand 4 states. [2018-10-24 14:14:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:45,248 INFO L93 Difference]: Finished difference Result 423709 states and 496631 transitions. [2018-10-24 14:14:45,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:45,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 367 [2018-10-24 14:14:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:45,533 INFO L225 Difference]: With dead ends: 423709 [2018-10-24 14:14:45,533 INFO L226 Difference]: Without dead ends: 252022 [2018-10-24 14:14:45,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252022 states. [2018-10-24 14:14:48,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252022 to 248862. [2018-10-24 14:14:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248862 states. [2018-10-24 14:14:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248862 states to 248862 states and 279429 transitions. [2018-10-24 14:14:48,859 INFO L78 Accepts]: Start accepts. Automaton has 248862 states and 279429 transitions. Word has length 367 [2018-10-24 14:14:48,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:48,860 INFO L481 AbstractCegarLoop]: Abstraction has 248862 states and 279429 transitions. [2018-10-24 14:14:48,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:48,860 INFO L276 IsEmpty]: Start isEmpty. Operand 248862 states and 279429 transitions. [2018-10-24 14:14:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-24 14:14:48,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:48,869 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 14:14:48,870 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:48,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:48,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1036730110, now seen corresponding path program 1 times [2018-10-24 14:14:48,870 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:48,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:48,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:48,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:48,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 436 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-24 14:14:49,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:49,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:14:49,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:14:49,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:14:49,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:14:49,199 INFO L87 Difference]: Start difference. First operand 248862 states and 279429 transitions. Second operand 3 states. [2018-10-24 14:15:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:00,650 INFO L93 Difference]: Finished difference Result 496121 states and 556598 transitions. [2018-10-24 14:15:00,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:15:00,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 393 [2018-10-24 14:15:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:00,973 INFO L225 Difference]: With dead ends: 496121 [2018-10-24 14:15:00,973 INFO L226 Difference]: Without dead ends: 244889 [2018-10-24 14:15:01,119 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 14:15:01,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244889 states. [2018-10-24 14:15:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244889 to 244881. [2018-10-24 14:15:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244881 states. [2018-10-24 14:15:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244881 states to 244881 states and 265462 transitions. [2018-10-24 14:15:11,737 INFO L78 Accepts]: Start accepts. Automaton has 244881 states and 265462 transitions. Word has length 393 [2018-10-24 14:15:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:15:11,738 INFO L481 AbstractCegarLoop]: Abstraction has 244881 states and 265462 transitions. [2018-10-24 14:15:11,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:15:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 244881 states and 265462 transitions. [2018-10-24 14:15:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-24 14:15:11,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:15:11,743 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:11,744 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:15:11,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:15:11,744 INFO L82 PathProgramCache]: Analyzing trace with hash -811495877, now seen corresponding path program 1 times [2018-10-24 14:15:11,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:15:11,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:15:11,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:11,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:15:11,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:15:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 14:15:12,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:15:12,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:15:12,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:15:12,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:15:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:15:12,072 INFO L87 Difference]: Start difference. First operand 244881 states and 265462 transitions. Second operand 4 states. [2018-10-24 14:15:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:25,482 INFO L93 Difference]: Finished difference Result 533134 states and 578208 transitions. [2018-10-24 14:15:25,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:15:25,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-10-24 14:15:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:25,876 INFO L225 Difference]: With dead ends: 533134 [2018-10-24 14:15:25,876 INFO L226 Difference]: Without dead ends: 289043 [2018-10-24 14:15:26,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:15:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289043 states. [2018-10-24 14:15:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289043 to 272440. [2018-10-24 14:15:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272440 states. [2018-10-24 14:15:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272440 states to 272440 states and 292780 transitions. [2018-10-24 14:15:29,880 INFO L78 Accepts]: Start accepts. Automaton has 272440 states and 292780 transitions. Word has length 396 [2018-10-24 14:15:29,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:15:29,880 INFO L481 AbstractCegarLoop]: Abstraction has 272440 states and 292780 transitions. [2018-10-24 14:15:29,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:15:29,881 INFO L276 IsEmpty]: Start isEmpty. Operand 272440 states and 292780 transitions. [2018-10-24 14:15:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-10-24 14:15:29,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:15:29,891 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 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] [2018-10-24 14:15:29,891 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:15:29,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:15:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash 713610285, now seen corresponding path program 1 times [2018-10-24 14:15:29,892 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:15:29,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:15:29,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:29,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:15:29,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:15:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 383 proven. 110 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-24 14:15:31,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:15:31,323 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 14:15:31,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:15:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:15:31,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:15:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-10-24 14:15:31,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:15:31,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 14:15:31,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:15:31,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:15:31,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:15:31,651 INFO L87 Difference]: Start difference. First operand 272440 states and 292780 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 14:15:58,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 14:15:58,836 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:15:58,841 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:15:58,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:15:58 BoogieIcfgContainer [2018-10-24 14:15:58,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:15:58,842 INFO L168 Benchmark]: Toolchain (without parser) took 224371.62 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -590.9 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 14:15:58,844 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 14:15:58,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2502.39 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: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:58,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 787.05 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.7 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 83.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:58,846 INFO L168 Benchmark]: Boogie Preprocessor took 629.82 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 62.0 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:58,847 INFO L168 Benchmark]: RCFGBuilder took 13195.87 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 236.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.3 MB). Peak memory consumption was 601.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:15:58,848 INFO L168 Benchmark]: TraceAbstraction took 207248.96 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 83.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 14:15:58,854 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 2502.39 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: 245.7 MB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 787.05 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.7 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 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 629.82 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 62.0 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13195.87 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 236.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.3 MB). Peak memory consumption was 601.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207248.96 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 83.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (272440states) and FLOYD_HOARE automaton (currently 13 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (277605 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 207.1s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 174.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8030 SDtfs, 39304 SDslu, 3564 SDs, 0 SdLazy, 70060 SolverSat, 18466 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 139.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 900 GetRequests, 857 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272440occurred 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: 25.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 68462 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 3953 NumberOfCodeBlocks, 3953 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3939 ConstructedInterpolants, 0 QuantifiedInterpolants, 4341444 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1185 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 4113/4231 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown