java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:09:52,289 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:09:52,294 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:09:52,312 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:09:52,312 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:09:52,314 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:09:52,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:09:52,319 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:09:52,322 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:09:52,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:09:52,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:09:52,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:09:52,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:09:52,338 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:09:52,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:09:52,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:09:52,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:09:52,347 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:09:52,349 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:09:52,353 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:09:52,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:09:52,357 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:09:52,360 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:09:52,361 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:09:52,361 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:09:52,362 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:09:52,363 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:09:52,364 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:09:52,366 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:09:52,367 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:09:52,367 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:09:52,370 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:09:52,374 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 19:09:52,400 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:09:52,400 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:09:52,401 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:09:52,402 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:09:52,402 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:09:52,403 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:09:52,403 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:09:52,403 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:09:52,403 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:09:52,403 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:09:52,404 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:09:52,404 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:09:52,404 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:09:52,404 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:09:52,404 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:09:52,405 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:09:52,406 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:09:52,406 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:09:52,406 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:09:52,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:09:52,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:09:52,407 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:09:52,407 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:09:52,407 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:09:52,407 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:09:52,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:09:52,408 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:09:52,408 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:09:52,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:09:52,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:09:52,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:09:52,508 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:09:52,509 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:09:52,510 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52_false-unreach-call.c [2018-10-26 19:09:52,578 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/13a7f6abb/8697afd24a1d4d7e858a758aec9ef525/FLAGc972e0ba9 [2018-10-26 19:09:53,425 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:09:53,426 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label52_false-unreach-call.c [2018-10-26 19:09:53,459 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/13a7f6abb/8697afd24a1d4d7e858a758aec9ef525/FLAGc972e0ba9 [2018-10-26 19:09:53,479 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/13a7f6abb/8697afd24a1d4d7e858a758aec9ef525 [2018-10-26 19:09:53,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:09:53,493 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:09:53,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:09:53,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:09:53,503 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:09:53,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:53,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53, skipping insertion in model container [2018-10-26 19:09:53,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:53,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:09:53,701 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:09:54,984 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:09:54,989 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:09:55,585 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:09:55,619 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:09:55,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55 WrapperNode [2018-10-26 19:09:55,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:09:55,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:09:55,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:09:55,621 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:09:55,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:55,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:56,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:09:56,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:09:56,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:09:56,294 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:09:56,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:56,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:56,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:56,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:56,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:56,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:56,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (1/1) ... [2018-10-26 19:09:56,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:09:56,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:09:56,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:09:56,602 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:09:56,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (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 19:09:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:09:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:09:56,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:10:05,814 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:10:05,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:10:05 BoogieIcfgContainer [2018-10-26 19:10:05,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:10:05,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:10:05,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:10:05,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:10:05,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:09:53" (1/3) ... [2018-10-26 19:10:05,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131e52ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:10:05, skipping insertion in model container [2018-10-26 19:10:05,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:55" (2/3) ... [2018-10-26 19:10:05,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131e52ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:10:05, skipping insertion in model container [2018-10-26 19:10:05,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:10:05" (3/3) ... [2018-10-26 19:10:05,824 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label52_false-unreach-call.c [2018-10-26 19:10:05,834 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:10:05,844 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:10:05,861 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:10:05,911 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:10:05,912 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:10:05,912 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:10:05,912 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:10:05,912 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:10:05,912 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:10:05,912 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:10:05,913 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:10:05,913 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:10:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:10:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 19:10:05,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:05,973 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:05,976 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:05,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:05,982 INFO L82 PathProgramCache]: Analyzing trace with hash -692138422, now seen corresponding path program 1 times [2018-10-26 19:10:05,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:05,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:06,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:06,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:06,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:06,423 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 19:10:06,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:06,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:10:06,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:10:06,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:10:06,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:06,451 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:10:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:22,744 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:10:22,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:10:22,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-26 19:10:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:22,786 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:10:22,786 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:10:22,793 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 19:10:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:10:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:10:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:10:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4229 transitions. [2018-10-26 19:10:22,955 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4229 transitions. Word has length 31 [2018-10-26 19:10:22,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:22,957 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4229 transitions. [2018-10-26 19:10:22,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:10:22,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4229 transitions. [2018-10-26 19:10:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-26 19:10:22,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:22,963 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:22,963 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:22,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:22,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1262000804, now seen corresponding path program 1 times [2018-10-26 19:10:22,964 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:22,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:22,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:22,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:22,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:23,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:23,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:10:23,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:10:23,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:10:23,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:23,391 INFO L87 Difference]: Start difference. First operand 2320 states and 4229 transitions. Second operand 4 states. [2018-10-26 19:10:36,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:36,133 INFO L93 Difference]: Finished difference Result 9150 states and 16788 transitions. [2018-10-26 19:10:36,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:10:36,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2018-10-26 19:10:36,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:36,175 INFO L225 Difference]: With dead ends: 9150 [2018-10-26 19:10:36,175 INFO L226 Difference]: Without dead ends: 6832 [2018-10-26 19:10:36,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 19:10:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-26 19:10:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-26 19:10:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-26 19:10:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10629 transitions. [2018-10-26 19:10:36,313 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10629 transitions. Word has length 107 [2018-10-26 19:10:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:36,314 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10629 transitions. [2018-10-26 19:10:36,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:10:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10629 transitions. [2018-10-26 19:10:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-26 19:10:36,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:36,322 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:36,323 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:36,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:36,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1551836813, now seen corresponding path program 1 times [2018-10-26 19:10:36,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:36,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:36,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:36,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:36,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:36,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:36,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:10:36,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:10:36,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:10:36,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:36,559 INFO L87 Difference]: Start difference. First operand 6832 states and 10629 transitions. Second operand 4 states. [2018-10-26 19:10:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:46,647 INFO L93 Difference]: Finished difference Result 27260 states and 42449 transitions. [2018-10-26 19:10:46,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:10:46,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-26 19:10:46,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:46,732 INFO L225 Difference]: With dead ends: 27260 [2018-10-26 19:10:46,732 INFO L226 Difference]: Without dead ends: 20430 [2018-10-26 19:10:46,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 19:10:46,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2018-10-26 19:10:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 13600. [2018-10-26 19:10:47,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-26 19:10:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 19341 transitions. [2018-10-26 19:10:47,077 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 19341 transitions. Word has length 113 [2018-10-26 19:10:47,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:47,078 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 19341 transitions. [2018-10-26 19:10:47,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:10:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 19341 transitions. [2018-10-26 19:10:47,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-26 19:10:47,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:47,091 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:47,091 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:47,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:47,091 INFO L82 PathProgramCache]: Analyzing trace with hash 311184864, now seen corresponding path program 1 times [2018-10-26 19:10:47,091 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:47,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:47,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:47,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:47,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:47,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:47,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:10:47,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:10:47,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:10:47,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:47,412 INFO L87 Difference]: Start difference. First operand 13600 states and 19341 transitions. Second operand 4 states. [2018-10-26 19:10:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:57,088 INFO L93 Difference]: Finished difference Result 54286 states and 77252 transitions. [2018-10-26 19:10:57,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:10:57,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2018-10-26 19:10:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:57,171 INFO L225 Difference]: With dead ends: 54286 [2018-10-26 19:10:57,172 INFO L226 Difference]: Without dead ends: 40688 [2018-10-26 19:10:57,192 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 19:10:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40688 states. [2018-10-26 19:10:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40688 to 27136. [2018-10-26 19:10:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27136 states. [2018-10-26 19:10:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27136 states to 27136 states and 34809 transitions. [2018-10-26 19:10:57,753 INFO L78 Accepts]: Start accepts. Automaton has 27136 states and 34809 transitions. Word has length 131 [2018-10-26 19:10:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:57,755 INFO L481 AbstractCegarLoop]: Abstraction has 27136 states and 34809 transitions. [2018-10-26 19:10:57,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:10:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 27136 states and 34809 transitions. [2018-10-26 19:10:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-26 19:10:57,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:57,759 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:57,759 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:57,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:57,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1367918199, now seen corresponding path program 1 times [2018-10-26 19:10:57,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:57,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:57,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:57,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:57,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:58,131 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:10:58,509 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-26 19:10:59,041 WARN L179 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2018-10-26 19:10:59,623 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-26 19:10:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-26 19:10:59,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:10:59,699 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 19:10:59,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:59,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:10:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-26 19:11:00,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:11:00,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2018-10-26 19:11:00,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:11:00,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:11:00,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:11:00,005 INFO L87 Difference]: Start difference. First operand 27136 states and 34809 transitions. Second operand 8 states. [2018-10-26 19:11:19,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:19,537 INFO L93 Difference]: Finished difference Result 101648 states and 130379 transitions. [2018-10-26 19:11:19,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:11:19,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2018-10-26 19:11:19,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:19,684 INFO L225 Difference]: With dead ends: 101648 [2018-10-26 19:11:19,684 INFO L226 Difference]: Without dead ends: 74514 [2018-10-26 19:11:19,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-10-26 19:11:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74514 states. [2018-10-26 19:11:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74514 to 71504. [2018-10-26 19:11:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71504 states. [2018-10-26 19:11:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71504 states to 71504 states and 87091 transitions. [2018-10-26 19:11:20,674 INFO L78 Accepts]: Start accepts. Automaton has 71504 states and 87091 transitions. Word has length 173 [2018-10-26 19:11:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:20,674 INFO L481 AbstractCegarLoop]: Abstraction has 71504 states and 87091 transitions. [2018-10-26 19:11:20,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:11:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 71504 states and 87091 transitions. [2018-10-26 19:11:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-26 19:11:20,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:20,685 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:20,685 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:20,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:20,686 INFO L82 PathProgramCache]: Analyzing trace with hash -494094147, now seen corresponding path program 1 times [2018-10-26 19:11:20,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:20,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:20,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:20,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:20,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:11:21,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:21,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:11:21,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:21,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:21,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:21,177 INFO L87 Difference]: Start difference. First operand 71504 states and 87091 transitions. Second operand 4 states. [2018-10-26 19:11:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:33,604 INFO L93 Difference]: Finished difference Result 144510 states and 175849 transitions. [2018-10-26 19:11:33,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:11:33,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2018-10-26 19:11:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:33,712 INFO L225 Difference]: With dead ends: 144510 [2018-10-26 19:11:33,712 INFO L226 Difference]: Without dead ends: 73760 [2018-10-26 19:11:33,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:33,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73760 states. [2018-10-26 19:11:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73760 to 72256. [2018-10-26 19:11:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72256 states. [2018-10-26 19:11:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72256 states to 72256 states and 85852 transitions. [2018-10-26 19:11:34,658 INFO L78 Accepts]: Start accepts. Automaton has 72256 states and 85852 transitions. Word has length 285 [2018-10-26 19:11:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:34,659 INFO L481 AbstractCegarLoop]: Abstraction has 72256 states and 85852 transitions. [2018-10-26 19:11:34,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:11:34,659 INFO L276 IsEmpty]: Start isEmpty. Operand 72256 states and 85852 transitions. [2018-10-26 19:11:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-26 19:11:34,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:34,673 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:34,674 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:34,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:34,674 INFO L82 PathProgramCache]: Analyzing trace with hash 531043655, now seen corresponding path program 1 times [2018-10-26 19:11:34,674 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:34,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:34,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:34,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:34,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-26 19:11:34,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:34,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:11:34,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:34,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:34,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:34,978 INFO L87 Difference]: Start difference. First operand 72256 states and 85852 transitions. Second operand 4 states. [2018-10-26 19:11:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:44,218 INFO L93 Difference]: Finished difference Result 143758 states and 170944 transitions. [2018-10-26 19:11:44,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:11:44,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 289 [2018-10-26 19:11:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:44,304 INFO L225 Difference]: With dead ends: 143758 [2018-10-26 19:11:44,304 INFO L226 Difference]: Without dead ends: 72256 [2018-10-26 19:11:44,348 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 19:11:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72256 states. [2018-10-26 19:11:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72256 to 70000. [2018-10-26 19:11:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70000 states. [2018-10-26 19:11:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70000 states to 70000 states and 77626 transitions. [2018-10-26 19:11:45,072 INFO L78 Accepts]: Start accepts. Automaton has 70000 states and 77626 transitions. Word has length 289 [2018-10-26 19:11:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:45,073 INFO L481 AbstractCegarLoop]: Abstraction has 70000 states and 77626 transitions. [2018-10-26 19:11:45,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:11:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 70000 states and 77626 transitions. [2018-10-26 19:11:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-26 19:11:45,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:45,083 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:45,083 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:45,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:45,084 INFO L82 PathProgramCache]: Analyzing trace with hash 775536557, now seen corresponding path program 1 times [2018-10-26 19:11:45,084 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:45,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:45,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:45,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:45,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 229 proven. 5 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-26 19:11:45,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:11:45,534 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 19:11:45,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:45,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:11:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-26 19:11:45,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:11:45,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 19:11:45,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:11:45,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:11:45,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:11:45,716 INFO L87 Difference]: Start difference. First operand 70000 states and 77626 transitions. Second operand 7 states. [2018-10-26 19:12:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:09,119 INFO L93 Difference]: Finished difference Result 167092 states and 184211 transitions. [2018-10-26 19:12:09,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:12:09,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2018-10-26 19:12:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:09,211 INFO L225 Difference]: With dead ends: 167092 [2018-10-26 19:12:09,212 INFO L226 Difference]: Without dead ends: 95587 [2018-10-26 19:12:09,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:12:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95587 states. [2018-10-26 19:12:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95587 to 72255. [2018-10-26 19:12:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72255 states. [2018-10-26 19:12:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72255 states to 72255 states and 76473 transitions. [2018-10-26 19:12:10,438 INFO L78 Accepts]: Start accepts. Automaton has 72255 states and 76473 transitions. Word has length 290 [2018-10-26 19:12:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:10,439 INFO L481 AbstractCegarLoop]: Abstraction has 72255 states and 76473 transitions. [2018-10-26 19:12:10,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:12:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 72255 states and 76473 transitions. [2018-10-26 19:12:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2018-10-26 19:12:10,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:10,534 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:10,534 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:10,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:10,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1382165509, now seen corresponding path program 1 times [2018-10-26 19:12:10,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:10,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:10,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:10,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:10,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-10-26 19:12:11,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:11,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:12:11,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:12:11,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:12:11,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:12:11,594 INFO L87 Difference]: Start difference. First operand 72255 states and 76473 transitions. Second operand 3 states. [2018-10-26 19:12:17,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:17,902 INFO L93 Difference]: Finished difference Result 154282 states and 164098 transitions. [2018-10-26 19:12:17,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:12:17,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1001 [2018-10-26 19:12:17,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:17,994 INFO L225 Difference]: With dead ends: 154282 [2018-10-26 19:12:17,994 INFO L226 Difference]: Without dead ends: 82781 [2018-10-26 19:12:18,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:12:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82781 states. [2018-10-26 19:12:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82781 to 82781. [2018-10-26 19:12:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82781 states. [2018-10-26 19:12:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82781 states to 82781 states and 87999 transitions. [2018-10-26 19:12:18,716 INFO L78 Accepts]: Start accepts. Automaton has 82781 states and 87999 transitions. Word has length 1001 [2018-10-26 19:12:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:18,717 INFO L481 AbstractCegarLoop]: Abstraction has 82781 states and 87999 transitions. [2018-10-26 19:12:18,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:12:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 82781 states and 87999 transitions. [2018-10-26 19:12:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2018-10-26 19:12:18,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:18,773 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:18,773 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:18,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:18,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1263413918, now seen corresponding path program 1 times [2018-10-26 19:12:18,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:18,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:18,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:18,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:18,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-26 19:12:20,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:20,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:12:20,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:12:20,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:12:20,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:20,308 INFO L87 Difference]: Start difference. First operand 82781 states and 87999 transitions. Second operand 4 states. [2018-10-26 19:12:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:28,084 INFO L93 Difference]: Finished difference Result 165559 states and 176001 transitions. [2018-10-26 19:12:28,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:12:28,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1010 [2018-10-26 19:12:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:28,166 INFO L225 Difference]: With dead ends: 165559 [2018-10-26 19:12:28,167 INFO L226 Difference]: Without dead ends: 79764 [2018-10-26 19:12:28,210 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 19:12:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79764 states. [2018-10-26 19:12:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79764 to 75252. [2018-10-26 19:12:28,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75252 states. [2018-10-26 19:12:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75252 states to 75252 states and 77977 transitions. [2018-10-26 19:12:28,838 INFO L78 Accepts]: Start accepts. Automaton has 75252 states and 77977 transitions. Word has length 1010 [2018-10-26 19:12:28,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:28,839 INFO L481 AbstractCegarLoop]: Abstraction has 75252 states and 77977 transitions. [2018-10-26 19:12:28,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:12:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 75252 states and 77977 transitions. [2018-10-26 19:12:28,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2018-10-26 19:12:28,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:28,887 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:28,887 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:28,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:28,887 INFO L82 PathProgramCache]: Analyzing trace with hash 631280039, now seen corresponding path program 1 times [2018-10-26 19:12:28,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:28,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:28,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:28,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:28,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:30,633 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:12:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-26 19:12:31,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:31,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:12:31,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:12:31,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:12:31,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:31,157 INFO L87 Difference]: Start difference. First operand 75252 states and 77977 transitions. Second operand 4 states. [2018-10-26 19:12:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:38,275 INFO L93 Difference]: Finished difference Result 154262 states and 159797 transitions. [2018-10-26 19:12:38,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:12:38,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1036 [2018-10-26 19:12:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:38,371 INFO L225 Difference]: With dead ends: 154262 [2018-10-26 19:12:38,371 INFO L226 Difference]: Without dead ends: 79764 [2018-10-26 19:12:38,414 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 19:12:38,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79764 states. [2018-10-26 19:12:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79764 to 75252. [2018-10-26 19:12:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75252 states. [2018-10-26 19:12:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75252 states to 75252 states and 77741 transitions. [2018-10-26 19:12:39,036 INFO L78 Accepts]: Start accepts. Automaton has 75252 states and 77741 transitions. Word has length 1036 [2018-10-26 19:12:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:39,037 INFO L481 AbstractCegarLoop]: Abstraction has 75252 states and 77741 transitions. [2018-10-26 19:12:39,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:12:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 75252 states and 77741 transitions. [2018-10-26 19:12:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2018-10-26 19:12:39,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:39,074 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:12:39,074 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:39,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:39,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2065705667, now seen corresponding path program 1 times [2018-10-26 19:12:39,075 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:39,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:39,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:39,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:39,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 517 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:12:41,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:12:41,100 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 19:12:41,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:41,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:12:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 517 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:12:43,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:12:43,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-26 19:12:43,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:12:43,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:12:43,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:12:43,127 INFO L87 Difference]: Start difference. First operand 75252 states and 77741 transitions. Second operand 6 states. [2018-10-26 19:13:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:00,032 INFO L93 Difference]: Finished difference Result 198637 states and 205514 transitions. [2018-10-26 19:13:00,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:13:00,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1048 [2018-10-26 19:13:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:00,567 INFO L225 Difference]: With dead ends: 198637 [2018-10-26 19:13:00,567 INFO L226 Difference]: Without dead ends: 123386 [2018-10-26 19:13:00,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:13:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123386 states. [2018-10-26 19:13:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123386 to 105331. [2018-10-26 19:13:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105331 states. [2018-10-26 19:13:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105331 states to 105331 states and 108413 transitions. [2018-10-26 19:13:01,565 INFO L78 Accepts]: Start accepts. Automaton has 105331 states and 108413 transitions. Word has length 1048 [2018-10-26 19:13:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:01,566 INFO L481 AbstractCegarLoop]: Abstraction has 105331 states and 108413 transitions. [2018-10-26 19:13:01,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:13:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 105331 states and 108413 transitions. [2018-10-26 19:13:01,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2018-10-26 19:13:01,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:01,623 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:01,623 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:01,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:01,624 INFO L82 PathProgramCache]: Analyzing trace with hash 752005048, now seen corresponding path program 1 times [2018-10-26 19:13:01,624 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:01,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:01,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:01,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:01,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2018-10-26 19:13:03,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:03,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:13:03,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:13:03,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:13:03,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:13:03,172 INFO L87 Difference]: Start difference. First operand 105331 states and 108413 transitions. Second operand 3 states. [2018-10-26 19:13:08,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:08,665 INFO L93 Difference]: Finished difference Result 238484 states and 245707 transitions. [2018-10-26 19:13:08,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:13:08,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1130 [2018-10-26 19:13:08,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:08,802 INFO L225 Difference]: With dead ends: 238484 [2018-10-26 19:13:08,802 INFO L226 Difference]: Without dead ends: 133154 [2018-10-26 19:13:08,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:13:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133154 states. [2018-10-26 19:13:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133154 to 129394. [2018-10-26 19:13:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129394 states. [2018-10-26 19:13:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129394 states to 129394 states and 133169 transitions. [2018-10-26 19:13:10,294 INFO L78 Accepts]: Start accepts. Automaton has 129394 states and 133169 transitions. Word has length 1130 [2018-10-26 19:13:10,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:10,296 INFO L481 AbstractCegarLoop]: Abstraction has 129394 states and 133169 transitions. [2018-10-26 19:13:10,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:13:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 129394 states and 133169 transitions. [2018-10-26 19:13:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2018-10-26 19:13:10,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:10,376 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:13:10,376 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:10,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:10,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1458799035, now seen corresponding path program 1 times [2018-10-26 19:13:10,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:10,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:10,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:10,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:10,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 1262 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-26 19:13:11,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:11,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:13:11,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:11,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:11,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:11,743 INFO L87 Difference]: Start difference. First operand 129394 states and 133169 transitions. Second operand 4 states. [2018-10-26 19:13:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:20,459 INFO L93 Difference]: Finished difference Result 302401 states and 312126 transitions. [2018-10-26 19:13:20,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:20,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1365 [2018-10-26 19:13:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:20,647 INFO L225 Difference]: With dead ends: 302401 [2018-10-26 19:13:20,647 INFO L226 Difference]: Without dead ends: 173761 [2018-10-26 19:13:20,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 19:13:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173761 states. [2018-10-26 19:13:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173761 to 170001. [2018-10-26 19:13:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170001 states. [2018-10-26 19:13:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170001 states to 170001 states and 174584 transitions. [2018-10-26 19:13:22,727 INFO L78 Accepts]: Start accepts. Automaton has 170001 states and 174584 transitions. Word has length 1365 [2018-10-26 19:13:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:22,728 INFO L481 AbstractCegarLoop]: Abstraction has 170001 states and 174584 transitions. [2018-10-26 19:13:22,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:13:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 170001 states and 174584 transitions. [2018-10-26 19:13:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1424 [2018-10-26 19:13:22,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:22,851 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:22,852 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:22,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:22,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2146172628, now seen corresponding path program 1 times [2018-10-26 19:13:22,853 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:22,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:22,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:22,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:22,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:24,280 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-10-26 19:13:24,571 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 7 [2018-10-26 19:13:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 911 proven. 262 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-26 19:13:29,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:13:29,568 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 19:13:29,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:29,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:13:33,840 WARN L179 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 160 DAG size of output: 31 [2018-10-26 19:13:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 1056 proven. 117 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-26 19:13:39,616 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:13:39,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-26 19:13:39,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:13:39,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:13:39,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:13:39,619 INFO L87 Difference]: Start difference. First operand 170001 states and 174584 transitions. Second operand 8 states. Received shutdown request... [2018-10-26 19:13:40,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:13:40,781 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:13:40,787 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:13:40,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:13:40 BoogieIcfgContainer [2018-10-26 19:13:40,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:13:40,788 INFO L168 Benchmark]: Toolchain (without parser) took 227296.37 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 805.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:40,789 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:13:40,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2126.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:40,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 672.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -981.8 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:40,793 INFO L168 Benchmark]: Boogie Preprocessor took 307.19 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: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:40,794 INFO L168 Benchmark]: RCFGBuilder took 9214.30 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 243.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -207.7 MB). Peak memory consumption was 658.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:40,795 INFO L168 Benchmark]: TraceAbstraction took 214971.20 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 722.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:40,800 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2126.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 672.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -981.8 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.19 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: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9214.30 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 243.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -207.7 MB). Peak memory consumption was 658.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214971.20 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 722.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (170001states) and FLOYD_HOARE automaton (currently 6 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (516 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 214.8s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 169.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9519 SDtfs, 31875 SDslu, 1377 SDs, 0 SdLazy, 78195 SolverSat, 16064 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 138.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3011 GetRequests, 2951 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170001occurred 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: 11.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 85083 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 21.2s InterpolantComputationTime, 12366 NumberOfCodeBlocks, 12366 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 12347 ConstructedInterpolants, 444 QuantifiedInterpolants, 54192386 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3459 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 9408/9938 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown