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/Problem18_label01_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:39:34,388 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:39:34,390 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:39:34,402 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:39:34,403 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:39:34,404 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:39:34,405 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:39:34,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:39:34,409 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:39:34,410 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:39:34,411 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:39:34,412 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:39:34,413 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:39:34,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:39:34,415 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:39:34,416 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:39:34,417 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:39:34,419 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:39:34,422 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:39:34,424 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:39:34,425 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:39:34,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:39:34,429 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:39:34,429 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:39:34,430 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:39:34,431 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:39:34,432 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:39:34,433 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:39:34,434 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:39:34,435 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:39:34,435 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:39:34,436 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:39:34,439 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:39:34,454 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:39:34,455 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:39:34,456 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:39:34,456 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:39:34,457 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:39:34,457 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:39:34,457 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:39:34,457 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:39:34,458 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:39:34,458 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:39:34,458 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:39:34,459 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:39:34,459 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:39:34,459 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:39:34,459 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:39:34,460 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:39:34,460 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:39:34,460 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:39:34,460 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:39:34,461 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:39:34,461 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:39:34,461 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:39:34,461 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:39:34,461 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:39:34,462 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:39:34,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:39:34,462 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:39:34,462 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:39:34,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:39:34,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:39:34,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:39:34,527 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:39:34,527 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:39:34,528 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-10-26 19:39:34,583 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/be650592a/fcd4505a9008488399ab0cb0df69cd7e/FLAG9dae4e3ec [2018-10-26 19:39:35,320 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:39:35,321 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label01_false-unreach-call.c [2018-10-26 19:39:35,346 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/be650592a/fcd4505a9008488399ab0cb0df69cd7e/FLAG9dae4e3ec [2018-10-26 19:39:35,368 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/be650592a/fcd4505a9008488399ab0cb0df69cd7e [2018-10-26 19:39:35,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:39:35,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:39:35,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:39:35,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:39:35,391 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:39:35,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:39:35" (1/1) ... [2018-10-26 19:39:35,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7670273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:35, skipping insertion in model container [2018-10-26 19:39:35,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:39:35" (1/1) ... [2018-10-26 19:39:35,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:39:35,547 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:39:36,489 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:39:36,497 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:39:36,956 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:39:36,984 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:39:36,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36 WrapperNode [2018-10-26 19:39:36,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:39:36,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:39:36,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:39:36,986 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:39:36,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:39:37,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:39:37,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:39:37,467 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:39:37,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... [2018-10-26 19:39:37,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:39:37,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:39:37,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:39:37,707 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:39:37,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:39:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:39:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:39:37,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:39:45,345 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:39:45,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:39:45 BoogieIcfgContainer [2018-10-26 19:39:45,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:39:45,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:39:45,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:39:45,350 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:39:45,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:39:35" (1/3) ... [2018-10-26 19:39:45,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64905f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:39:45, skipping insertion in model container [2018-10-26 19:39:45,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:36" (2/3) ... [2018-10-26 19:39:45,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64905f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:39:45, skipping insertion in model container [2018-10-26 19:39:45,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:39:45" (3/3) ... [2018-10-26 19:39:45,354 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label01_false-unreach-call.c [2018-10-26 19:39:45,365 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:39:45,374 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:39:45,392 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:39:45,436 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:39:45,437 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:39:45,438 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:39:45,438 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:39:45,438 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:39:45,438 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:39:45,438 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:39:45,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:39:45,439 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:39:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-26 19:39:45,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 19:39:45,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:39:45,482 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] [2018-10-26 19:39:45,484 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:39:45,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:39:45,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1740446778, now seen corresponding path program 1 times [2018-10-26 19:39:45,494 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:39:45,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:39:45,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:45,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:39:45,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:39:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:39:45,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:39:45,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:39:45,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:39:45,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:39:45,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:39:45,911 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-26 19:39:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:39:56,743 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-26 19:39:56,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:39:56,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-26 19:39:56,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:39:56,792 INFO L225 Difference]: With dead ends: 2902 [2018-10-26 19:39:56,792 INFO L226 Difference]: Without dead ends: 2137 [2018-10-26 19:39:56,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:39:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-26 19:39:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-26 19:39:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-26 19:39:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3649 transitions. [2018-10-26 19:39:56,967 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3649 transitions. Word has length 27 [2018-10-26 19:39:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:39:56,968 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3649 transitions. [2018-10-26 19:39:56,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:39:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3649 transitions. [2018-10-26 19:39:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-26 19:39:56,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:39:56,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:39:56,976 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:39:56,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:39:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash -245512399, now seen corresponding path program 1 times [2018-10-26 19:39:56,976 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:39:56,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:39:56,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:56,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:39:56,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:39:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:39:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:39:57,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:39:57,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:39:57,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:39:57,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:39:57,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:39:57,307 INFO L87 Difference]: Start difference. First operand 2137 states and 3649 transitions. Second operand 4 states. [2018-10-26 19:40:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:03,511 INFO L93 Difference]: Finished difference Result 6345 states and 10882 transitions. [2018-10-26 19:40:03,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:40:03,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2018-10-26 19:40:03,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:03,535 INFO L225 Difference]: With dead ends: 6345 [2018-10-26 19:40:03,535 INFO L226 Difference]: Without dead ends: 4210 [2018-10-26 19:40:03,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2018-10-26 19:40:03,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4210. [2018-10-26 19:40:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2018-10-26 19:40:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6149 transitions. [2018-10-26 19:40:03,623 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6149 transitions. Word has length 94 [2018-10-26 19:40:03,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:03,624 INFO L481 AbstractCegarLoop]: Abstraction has 4210 states and 6149 transitions. [2018-10-26 19:40:03,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:40:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6149 transitions. [2018-10-26 19:40:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-26 19:40:03,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:03,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:40:03,629 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:03,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:03,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2084624824, now seen corresponding path program 1 times [2018-10-26 19:40:03,629 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:03,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:03,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:03,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:03,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:03,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:03,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:40:03,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:40:03,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:40:03,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:03,796 INFO L87 Difference]: Start difference. First operand 4210 states and 6149 transitions. Second operand 4 states. [2018-10-26 19:40:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:11,328 INFO L93 Difference]: Finished difference Result 16727 states and 24484 transitions. [2018-10-26 19:40:11,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:40:11,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-26 19:40:11,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:11,394 INFO L225 Difference]: With dead ends: 16727 [2018-10-26 19:40:11,394 INFO L226 Difference]: Without dead ends: 12519 [2018-10-26 19:40:11,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2018-10-26 19:40:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 12517. [2018-10-26 19:40:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12517 states. [2018-10-26 19:40:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 16172 transitions. [2018-10-26 19:40:11,629 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 16172 transitions. Word has length 99 [2018-10-26 19:40:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:11,630 INFO L481 AbstractCegarLoop]: Abstraction has 12517 states and 16172 transitions. [2018-10-26 19:40:11,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:40:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 16172 transitions. [2018-10-26 19:40:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-26 19:40:11,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:11,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:40:11,637 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:11,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:11,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2109012433, now seen corresponding path program 1 times [2018-10-26 19:40:11,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:11,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:11,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:11,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:11,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:11,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:11,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:40:11,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:40:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:40:11,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:11,940 INFO L87 Difference]: Start difference. First operand 12517 states and 16172 transitions. Second operand 4 states. [2018-10-26 19:40:19,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:19,806 INFO L93 Difference]: Finished difference Result 49908 states and 64530 transitions. [2018-10-26 19:40:19,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:40:19,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2018-10-26 19:40:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:19,928 INFO L225 Difference]: With dead ends: 49908 [2018-10-26 19:40:19,928 INFO L226 Difference]: Without dead ends: 37393 [2018-10-26 19:40:19,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37393 states. [2018-10-26 19:40:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37393 to 37393. [2018-10-26 19:40:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37393 states. [2018-10-26 19:40:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37393 states to 37393 states and 45766 transitions. [2018-10-26 19:40:20,454 INFO L78 Accepts]: Start accepts. Automaton has 37393 states and 45766 transitions. Word has length 121 [2018-10-26 19:40:20,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:20,454 INFO L481 AbstractCegarLoop]: Abstraction has 37393 states and 45766 transitions. [2018-10-26 19:40:20,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:40:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 37393 states and 45766 transitions. [2018-10-26 19:40:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-26 19:40:20,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:20,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:40:20,463 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:20,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:20,464 INFO L82 PathProgramCache]: Analyzing trace with hash -803611789, now seen corresponding path program 1 times [2018-10-26 19:40:20,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:20,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:20,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:20,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:20,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:21,275 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-26 19:40:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:21,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:21,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:40:21,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:40:21,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:40:21,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:40:21,511 INFO L87 Difference]: Start difference. First operand 37393 states and 45766 transitions. Second operand 5 states. [2018-10-26 19:40:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:30,120 INFO L93 Difference]: Finished difference Result 87222 states and 105468 transitions. [2018-10-26 19:40:30,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:40:30,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-26 19:40:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:30,221 INFO L225 Difference]: With dead ends: 87222 [2018-10-26 19:40:30,221 INFO L226 Difference]: Without dead ends: 48448 [2018-10-26 19:40:30,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:40:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48448 states. [2018-10-26 19:40:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48448 to 46375. [2018-10-26 19:40:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46375 states. [2018-10-26 19:40:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46375 states to 46375 states and 55349 transitions. [2018-10-26 19:40:31,122 INFO L78 Accepts]: Start accepts. Automaton has 46375 states and 55349 transitions. Word has length 146 [2018-10-26 19:40:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:31,123 INFO L481 AbstractCegarLoop]: Abstraction has 46375 states and 55349 transitions. [2018-10-26 19:40:31,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:40:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 46375 states and 55349 transitions. [2018-10-26 19:40:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-26 19:40:31,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:31,136 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:40:31,136 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:31,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:31,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1849595770, now seen corresponding path program 1 times [2018-10-26 19:40:31,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:31,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:31,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:31,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:31,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:31,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:40:31,794 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:40:31,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:31,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:40:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-26 19:40:32,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:40:32,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:40:32,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:40:32,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:40:32,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:40:32,145 INFO L87 Difference]: Start difference. First operand 46375 states and 55349 transitions. Second operand 6 states. [2018-10-26 19:40:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:46,533 INFO L93 Difference]: Finished difference Result 101743 states and 120015 transitions. [2018-10-26 19:40:46,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:40:46,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2018-10-26 19:40:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:46,630 INFO L225 Difference]: With dead ends: 101743 [2018-10-26 19:40:46,630 INFO L226 Difference]: Without dead ends: 51911 [2018-10-26 19:40:46,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:40:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51911 states. [2018-10-26 19:40:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51911 to 42211. [2018-10-26 19:40:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42211 states. [2018-10-26 19:40:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42211 states to 42211 states and 45784 transitions. [2018-10-26 19:40:47,334 INFO L78 Accepts]: Start accepts. Automaton has 42211 states and 45784 transitions. Word has length 329 [2018-10-26 19:40:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:47,335 INFO L481 AbstractCegarLoop]: Abstraction has 42211 states and 45784 transitions. [2018-10-26 19:40:47,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:40:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 42211 states and 45784 transitions. [2018-10-26 19:40:47,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-10-26 19:40:47,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:47,358 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:40:47,358 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:47,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:47,359 INFO L82 PathProgramCache]: Analyzing trace with hash -731024826, now seen corresponding path program 1 times [2018-10-26 19:40:47,360 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:47,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:47,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:47,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:47,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-26 19:40:48,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:48,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:40:48,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:40:48,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:40:48,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:48,408 INFO L87 Difference]: Start difference. First operand 42211 states and 45784 transitions. Second operand 4 states. [2018-10-26 19:40:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:53,816 INFO L93 Difference]: Finished difference Result 104467 states and 114925 transitions. [2018-10-26 19:40:53,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:40:53,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 631 [2018-10-26 19:40:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:53,949 INFO L225 Difference]: With dead ends: 104467 [2018-10-26 19:40:53,949 INFO L226 Difference]: Without dead ends: 62258 [2018-10-26 19:40:53,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62258 states. [2018-10-26 19:40:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62258 to 53267. [2018-10-26 19:40:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53267 states. [2018-10-26 19:40:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53267 states to 53267 states and 57696 transitions. [2018-10-26 19:40:54,552 INFO L78 Accepts]: Start accepts. Automaton has 53267 states and 57696 transitions. Word has length 631 [2018-10-26 19:40:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:54,553 INFO L481 AbstractCegarLoop]: Abstraction has 53267 states and 57696 transitions. [2018-10-26 19:40:54,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:40:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 53267 states and 57696 transitions. [2018-10-26 19:40:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-10-26 19:40:54,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:54,581 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2018-10-26 19:40:54,581 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:54,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:54,581 INFO L82 PathProgramCache]: Analyzing trace with hash -56922008, now seen corresponding path program 1 times [2018-10-26 19:40:54,582 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:54,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:54,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:54,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:54,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:55,275 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:40:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-26 19:40:56,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:56,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:40:56,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:40:56,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:40:56,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:56,019 INFO L87 Difference]: Start difference. First operand 53267 states and 57696 transitions. Second operand 4 states. [2018-10-26 19:41:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:41:02,461 INFO L93 Difference]: Finished difference Result 125189 states and 135800 transitions. [2018-10-26 19:41:02,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:41:02,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 664 [2018-10-26 19:41:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:41:02,542 INFO L225 Difference]: With dead ends: 125189 [2018-10-26 19:41:02,542 INFO L226 Difference]: Without dead ends: 71924 [2018-10-26 19:41:02,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71924 states. [2018-10-26 19:41:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71924 to 71233. [2018-10-26 19:41:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71233 states. [2018-10-26 19:41:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71233 states to 71233 states and 75926 transitions. [2018-10-26 19:41:03,293 INFO L78 Accepts]: Start accepts. Automaton has 71233 states and 75926 transitions. Word has length 664 [2018-10-26 19:41:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:03,294 INFO L481 AbstractCegarLoop]: Abstraction has 71233 states and 75926 transitions. [2018-10-26 19:41:03,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:41:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 71233 states and 75926 transitions. [2018-10-26 19:41:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2018-10-26 19:41:03,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:03,338 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2018-10-26 19:41:03,338 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:03,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:03,339 INFO L82 PathProgramCache]: Analyzing trace with hash -100247489, now seen corresponding path program 1 times [2018-10-26 19:41:03,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:03,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:03,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:03,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:03,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2018-10-26 19:41:04,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:41:04,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:41:04,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:41:04,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:41:04,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:04,796 INFO L87 Difference]: Start difference. First operand 71233 states and 75926 transitions. Second operand 4 states. [2018-10-26 19:41:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:41:09,802 INFO L93 Difference]: Finished difference Result 145228 states and 154723 transitions. [2018-10-26 19:41:09,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:41:09,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 837 [2018-10-26 19:41:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:41:09,882 INFO L225 Difference]: With dead ends: 145228 [2018-10-26 19:41:09,882 INFO L226 Difference]: Without dead ends: 65690 [2018-10-26 19:41:09,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65690 states. [2018-10-26 19:41:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65690 to 64308. [2018-10-26 19:41:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64308 states. [2018-10-26 19:41:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64308 states to 64308 states and 66452 transitions. [2018-10-26 19:41:10,528 INFO L78 Accepts]: Start accepts. Automaton has 64308 states and 66452 transitions. Word has length 837 [2018-10-26 19:41:10,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:10,530 INFO L481 AbstractCegarLoop]: Abstraction has 64308 states and 66452 transitions. [2018-10-26 19:41:10,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:41:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 64308 states and 66452 transitions. [2018-10-26 19:41:10,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2018-10-26 19:41:10,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:10,560 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:41:10,560 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:10,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:10,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1243717665, now seen corresponding path program 1 times [2018-10-26 19:41:10,561 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:10,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:10,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:10,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:10,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:11,248 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-26 19:41:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 1113 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2018-10-26 19:41:11,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:41:11,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:41:11,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:41:11,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:41:11,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:11,914 INFO L87 Difference]: Start difference. First operand 64308 states and 66452 transitions. Second operand 4 states. [2018-10-26 19:41:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:41:16,619 INFO L93 Difference]: Finished difference Result 143123 states and 148115 transitions. [2018-10-26 19:41:16,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:41:16,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 870 [2018-10-26 19:41:16,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:41:16,692 INFO L225 Difference]: With dead ends: 143123 [2018-10-26 19:41:16,693 INFO L226 Difference]: Without dead ends: 78817 [2018-10-26 19:41:16,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78817 states. [2018-10-26 19:41:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78817 to 74671. [2018-10-26 19:41:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74671 states. [2018-10-26 19:41:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74671 states to 74671 states and 76872 transitions. [2018-10-26 19:41:17,303 INFO L78 Accepts]: Start accepts. Automaton has 74671 states and 76872 transitions. Word has length 870 [2018-10-26 19:41:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:17,304 INFO L481 AbstractCegarLoop]: Abstraction has 74671 states and 76872 transitions. [2018-10-26 19:41:17,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:41:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 74671 states and 76872 transitions. [2018-10-26 19:41:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-10-26 19:41:17,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:17,325 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2018-10-26 19:41:17,325 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:17,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:17,326 INFO L82 PathProgramCache]: Analyzing trace with hash 71348960, now seen corresponding path program 1 times [2018-10-26 19:41:17,326 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:17,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:17,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:17,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:17,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:18,256 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:41:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 1033 proven. 452 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-26 19:41:19,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:41:19,784 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:41:19,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:20,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:41:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 620 proven. 0 refuted. 0 times theorem prover too weak. 1208 trivial. 0 not checked. [2018-10-26 19:41:20,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:41:20,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2018-10-26 19:41:20,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 19:41:20,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 19:41:20,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:41:20,757 INFO L87 Difference]: Start difference. First operand 74671 states and 76872 transitions. Second operand 11 states. [2018-10-26 19:41:43,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:41:43,046 INFO L93 Difference]: Finished difference Result 196930 states and 203256 transitions. [2018-10-26 19:41:43,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-26 19:41:43,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 928 [2018-10-26 19:41:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:41:43,156 INFO L225 Difference]: With dead ends: 196930 [2018-10-26 19:41:43,156 INFO L226 Difference]: Without dead ends: 122952 [2018-10-26 19:41:43,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 947 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2018-10-26 19:41:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122952 states. [2018-10-26 19:41:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122952 to 87109. [2018-10-26 19:41:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87109 states. [2018-10-26 19:41:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87109 states to 87109 states and 89465 transitions. [2018-10-26 19:41:44,423 INFO L78 Accepts]: Start accepts. Automaton has 87109 states and 89465 transitions. Word has length 928 [2018-10-26 19:41:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:44,424 INFO L481 AbstractCegarLoop]: Abstraction has 87109 states and 89465 transitions. [2018-10-26 19:41:44,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 19:41:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 87109 states and 89465 transitions. [2018-10-26 19:41:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1491 [2018-10-26 19:41:44,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:44,456 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:41:44,456 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:44,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:44,456 INFO L82 PathProgramCache]: Analyzing trace with hash -904586158, now seen corresponding path program 1 times [2018-10-26 19:41:44,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:44,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:44,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:45,759 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-26 19:41:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 1850 proven. 499 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-10-26 19:41:50,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:41:50,140 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 [2018-10-26 19:41:50,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:50,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:41:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 1255 proven. 0 refuted. 0 times theorem prover too weak. 1533 trivial. 0 not checked. [2018-10-26 19:41:52,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:41:52,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2018-10-26 19:41:52,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 19:41:52,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 19:41:52,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-26 19:41:52,025 INFO L87 Difference]: Start difference. First operand 87109 states and 89465 transitions. Second operand 13 states. [2018-10-26 19:42:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:10,801 INFO L93 Difference]: Finished difference Result 179483 states and 184261 transitions. [2018-10-26 19:42:10,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-26 19:42:10,801 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1490 [2018-10-26 19:42:10,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:10,886 INFO L225 Difference]: With dead ends: 179483 [2018-10-26 19:42:10,886 INFO L226 Difference]: Without dead ends: 86830 [2018-10-26 19:42:10,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1514 GetRequests, 1490 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2018-10-26 19:42:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86830 states. [2018-10-26 19:42:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86830 to 82256. [2018-10-26 19:42:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82256 states. [2018-10-26 19:42:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82256 states to 82256 states and 84213 transitions. [2018-10-26 19:42:11,597 INFO L78 Accepts]: Start accepts. Automaton has 82256 states and 84213 transitions. Word has length 1490 [2018-10-26 19:42:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:11,598 INFO L481 AbstractCegarLoop]: Abstraction has 82256 states and 84213 transitions. [2018-10-26 19:42:11,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 19:42:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 82256 states and 84213 transitions. [2018-10-26 19:42:11,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2018-10-26 19:42:11,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:11,627 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:42:11,627 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:11,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:11,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1883304120, now seen corresponding path program 1 times [2018-10-26 19:42:11,628 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:11,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:11,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:11,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:11,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:12,693 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:42:13,032 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 19:42:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3629 backedges. 2156 proven. 0 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2018-10-26 19:42:14,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:42:14,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 19:42:14,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:42:14,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:42:14,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:42:14,847 INFO L87 Difference]: Start difference. First operand 82256 states and 84213 transitions. Second operand 7 states. [2018-10-26 19:42:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:23,080 INFO L93 Difference]: Finished difference Result 167396 states and 171458 transitions. [2018-10-26 19:42:23,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:42:23,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1578 [2018-10-26 19:42:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:23,167 INFO L225 Difference]: With dead ends: 167396 [2018-10-26 19:42:23,167 INFO L226 Difference]: Without dead ends: 84341 [2018-10-26 19:42:23,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:42:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84341 states. [2018-10-26 19:42:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84341 to 84325. [2018-10-26 19:42:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84325 states. [2018-10-26 19:42:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84325 states to 84325 states and 86184 transitions. [2018-10-26 19:42:23,853 INFO L78 Accepts]: Start accepts. Automaton has 84325 states and 86184 transitions. Word has length 1578 [2018-10-26 19:42:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:23,854 INFO L481 AbstractCegarLoop]: Abstraction has 84325 states and 86184 transitions. [2018-10-26 19:42:23,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:42:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 84325 states and 86184 transitions. [2018-10-26 19:42:23,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1613 [2018-10-26 19:42:23,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:23,880 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:42:23,880 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:23,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:23,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1452348509, now seen corresponding path program 1 times [2018-10-26 19:42:23,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:23,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:23,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:23,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:23,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:25,626 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-26 19:42:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1121 proven. 1792 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-10-26 19:42:30,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:42:30,039 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 [2018-10-26 19:42:30,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:30,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:42:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 1409 proven. 0 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2018-10-26 19:42:32,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:42:32,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 18 [2018-10-26 19:42:32,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-26 19:42:32,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-26 19:42:32,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-10-26 19:42:32,313 INFO L87 Difference]: Start difference. First operand 84325 states and 86184 transitions. Second operand 18 states. [2018-10-26 19:43:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:15,192 INFO L93 Difference]: Finished difference Result 193207 states and 197524 transitions. [2018-10-26 19:43:15,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-26 19:43:15,192 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1612 [2018-10-26 19:43:15,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:15,297 INFO L225 Difference]: With dead ends: 193207 [2018-10-26 19:43:15,297 INFO L226 Difference]: Without dead ends: 104642 [2018-10-26 19:43:15,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1630 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2018-10-26 19:43:15,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104642 states. [2018-10-26 19:43:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104642 to 93302. [2018-10-26 19:43:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93302 states. [2018-10-26 19:43:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93302 states to 93302 states and 95212 transitions. [2018-10-26 19:43:16,073 INFO L78 Accepts]: Start accepts. Automaton has 93302 states and 95212 transitions. Word has length 1612 [2018-10-26 19:43:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:16,074 INFO L481 AbstractCegarLoop]: Abstraction has 93302 states and 95212 transitions. [2018-10-26 19:43:16,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-26 19:43:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 93302 states and 95212 transitions. [2018-10-26 19:43:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2018-10-26 19:43:16,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:16,108 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:43:16,108 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:16,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:16,109 INFO L82 PathProgramCache]: Analyzing trace with hash 976284470, now seen corresponding path program 1 times [2018-10-26 19:43:16,109 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:16,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:16,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:16,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:16,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 1893 proven. 1672 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2018-10-26 19:43:21,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:43:21,474 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 [2018-10-26 19:43:21,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:21,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:43:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 1131 proven. 0 refuted. 0 times theorem prover too weak. 2859 trivial. 0 not checked. [2018-10-26 19:43:23,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:43:23,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-26 19:43:23,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:43:23,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:43:23,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:43:23,401 INFO L87 Difference]: Start difference. First operand 93302 states and 95212 transitions. Second operand 12 states. Received shutdown request... [2018-10-26 19:43:26,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:43:26,488 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:43:26,499 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:43:26,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:43:26 BoogieIcfgContainer [2018-10-26 19:43:26,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:43:26,502 INFO L168 Benchmark]: Toolchain (without parser) took 231120.23 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -695.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-26 19:43:26,503 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:43:26,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1601.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:26,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 480.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:26,509 INFO L168 Benchmark]: Boogie Preprocessor took 239.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:26,510 INFO L168 Benchmark]: RCFGBuilder took 7639.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 544.6 MB). Peak memory consumption was 544.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:26,513 INFO L168 Benchmark]: TraceAbstraction took 221153.22 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -453.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-26 19:43:26,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1601.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 480.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 239.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7639.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 544.6 MB). Peak memory consumption was 544.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221153.22 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -453.5 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: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was constructing difference of abstraction (93302states) and FLOYD_HOARE automaton (currently 4 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (853 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 221.0s OverallTime, 15 OverallIterations, 9 TraceHistogramMax, 173.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8107 SDtfs, 55905 SDslu, 3426 SDs, 0 SdLazy, 148410 SolverSat, 10780 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 136.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6236 GetRequests, 6089 SyntacticMatches, 14 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93302occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 78758 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 17135 NumberOfCodeBlocks, 17135 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 17115 ConstructedInterpolants, 0 QuantifiedInterpolants, 86122012 SizeOfPredicates, 1 NumberOfNonLiveVariables, 7016 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 27366/31785 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown