java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:35:58,180 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:35:58,182 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:35:58,195 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:35:58,196 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:35:58,199 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:35:58,201 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:35:58,204 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:35:58,206 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:35:58,209 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:35:58,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:35:58,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:35:58,213 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:35:58,214 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:35:58,220 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:35:58,221 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:35:58,222 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:35:58,229 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:35:58,231 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:35:58,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:35:58,237 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:35:58,240 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:35:58,243 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:35:58,243 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:35:58,243 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:35:58,244 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:35:58,245 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:35:58,246 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:35:58,248 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:35:58,250 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:35:58,251 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:35:58,251 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:35:58,256 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 [2018-10-23 18:35:58,282 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:35:58,282 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:35:58,283 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:35:58,283 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:35:58,283 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:35:58,284 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:35:58,284 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:35:58,284 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:35:58,284 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:35:58,284 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:35:58,285 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:35:58,285 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:35:58,285 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:35:58,285 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:35:58,285 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:35:58,286 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:35:58,286 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:35:58,286 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:35:58,286 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:35:58,286 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:35:58,287 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:35:58,287 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:35:58,287 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:35:58,287 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:35:58,287 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:35:58,287 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:35:58,288 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:35:58,288 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:35:58,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:35:58,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:35:58,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:35:58,351 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:35:58,352 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:35:58,352 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label38_false-unreach-call.c [2018-10-23 18:35:58,416 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bfe6025be/f16a1b55f84a40369620b93483de7760/FLAGc1808454e [2018-10-23 18:35:59,133 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:35:59,134 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label38_false-unreach-call.c [2018-10-23 18:35:59,160 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bfe6025be/f16a1b55f84a40369620b93483de7760/FLAGc1808454e [2018-10-23 18:35:59,180 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bfe6025be/f16a1b55f84a40369620b93483de7760 [2018-10-23 18:35:59,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:35:59,196 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:35:59,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:35:59,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:35:59,202 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:35:59,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:35:59" (1/1) ... [2018-10-23 18:35:59,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad6d500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:35:59, skipping insertion in model container [2018-10-23 18:35:59,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:35:59" (1/1) ... [2018-10-23 18:35:59,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:35:59,355 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:36:00,461 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:36:00,466 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:36:00,925 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:36:00,956 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:36:00,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00 WrapperNode [2018-10-23 18:36:00,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:36:00,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:36:00,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:36:00,959 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:36:00,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:36:01,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:36:01,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:36:01,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:36:01,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (1/1) ... [2018-10-23 18:36:01,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:36:01,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:36:01,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:36:01,711 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:36:01,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (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 [2018-10-23 18:36:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:36:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:36:01,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:36:09,699 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:36:09,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:36:09 BoogieIcfgContainer [2018-10-23 18:36:09,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:36:09,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:36:09,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:36:09,706 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:36:09,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:35:59" (1/3) ... [2018-10-23 18:36:09,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a3f606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:36:09, skipping insertion in model container [2018-10-23 18:36:09,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:36:00" (2/3) ... [2018-10-23 18:36:09,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a3f606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:36:09, skipping insertion in model container [2018-10-23 18:36:09,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:36:09" (3/3) ... [2018-10-23 18:36:09,712 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label38_false-unreach-call.c [2018-10-23 18:36:09,722 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:36:09,732 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:36:09,751 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:36:09,805 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:36:09,806 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:36:09,806 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:36:09,806 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:36:09,806 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:36:09,806 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:36:09,806 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:36:09,806 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:36:09,807 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:36:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-23 18:36:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-23 18:36:09,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:09,851 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] [2018-10-23 18:36:09,854 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:09,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1407492386, now seen corresponding path program 1 times [2018-10-23 18:36:09,863 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:09,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:09,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:09,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:09,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:36:10,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:36:10,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:36:10,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:36:10,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:36:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:10,282 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-23 18:36:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:22,194 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-10-23 18:36:22,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:36:22,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-23 18:36:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:22,239 INFO L225 Difference]: With dead ends: 2918 [2018-10-23 18:36:22,240 INFO L226 Difference]: Without dead ends: 2153 [2018-10-23 18:36:22,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:22,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-10-23 18:36:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-10-23 18:36:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-10-23 18:36:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3619 transitions. [2018-10-23 18:36:22,443 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3619 transitions. Word has length 21 [2018-10-23 18:36:22,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:22,444 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 3619 transitions. [2018-10-23 18:36:22,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:36:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3619 transitions. [2018-10-23 18:36:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-23 18:36:22,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:22,449 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:36:22,449 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:22,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash -950809615, now seen corresponding path program 1 times [2018-10-23 18:36:22,450 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:22,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:22,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:22,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:22,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:36:22,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:36:22,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:36:22,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:36:22,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:36:22,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:22,700 INFO L87 Difference]: Start difference. First operand 2153 states and 3619 transitions. Second operand 4 states. [2018-10-23 18:36:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:32,598 INFO L93 Difference]: Finished difference Result 6377 states and 10776 transitions. [2018-10-23 18:36:32,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:36:32,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-23 18:36:32,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:32,623 INFO L225 Difference]: With dead ends: 6377 [2018-10-23 18:36:32,623 INFO L226 Difference]: Without dead ends: 4226 [2018-10-23 18:36:32,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-10-23 18:36:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-10-23 18:36:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-10-23 18:36:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 6043 transitions. [2018-10-23 18:36:32,712 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 6043 transitions. Word has length 87 [2018-10-23 18:36:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:32,713 INFO L481 AbstractCegarLoop]: Abstraction has 4226 states and 6043 transitions. [2018-10-23 18:36:32,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:36:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 6043 transitions. [2018-10-23 18:36:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-23 18:36:32,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:32,721 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:36:32,722 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:32,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:32,722 INFO L82 PathProgramCache]: Analyzing trace with hash -542909622, now seen corresponding path program 1 times [2018-10-23 18:36:32,722 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:32,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:32,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:32,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:32,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-23 18:36:33,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:36:33,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:36:33,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:36:33,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:36:33,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:36:33,530 INFO L87 Difference]: Start difference. First operand 4226 states and 6043 transitions. Second operand 5 states. [2018-10-23 18:36:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:41,522 INFO L93 Difference]: Finished difference Result 13287 states and 18113 transitions. [2018-10-23 18:36:41,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:36:41,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2018-10-23 18:36:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:41,567 INFO L225 Difference]: With dead ends: 13287 [2018-10-23 18:36:41,567 INFO L226 Difference]: Without dead ends: 9063 [2018-10-23 18:36:41,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:36:41,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9063 states. [2018-10-23 18:36:41,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9063 to 8372. [2018-10-23 18:36:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8372 states. [2018-10-23 18:36:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 10467 transitions. [2018-10-23 18:36:41,725 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 10467 transitions. Word has length 206 [2018-10-23 18:36:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:41,726 INFO L481 AbstractCegarLoop]: Abstraction has 8372 states and 10467 transitions. [2018-10-23 18:36:41,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:36:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 10467 transitions. [2018-10-23 18:36:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-10-23 18:36:41,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:41,733 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 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] [2018-10-23 18:36:41,733 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:41,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash -860925135, now seen corresponding path program 1 times [2018-10-23 18:36:41,734 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:41,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:41,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:41,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:41,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 268 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-23 18:36:42,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:36:42,540 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 [2018-10-23 18:36:42,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:42,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:36:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-23 18:36:42,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:36:42,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:36:42,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:36:42,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:36:42,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:36:42,938 INFO L87 Difference]: Start difference. First operand 8372 states and 10467 transitions. Second operand 6 states. [2018-10-23 18:36:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:53,675 INFO L93 Difference]: Finished difference Result 26432 states and 32780 transitions. [2018-10-23 18:36:53,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:36:53,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 389 [2018-10-23 18:36:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:53,745 INFO L225 Difference]: With dead ends: 26432 [2018-10-23 18:36:53,746 INFO L226 Difference]: Without dead ends: 15986 [2018-10-23 18:36:53,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:36:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15986 states. [2018-10-23 18:36:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15986 to 11810. [2018-10-23 18:36:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11810 states. [2018-10-23 18:36:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 13599 transitions. [2018-10-23 18:36:54,011 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 13599 transitions. Word has length 389 [2018-10-23 18:36:54,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:54,012 INFO L481 AbstractCegarLoop]: Abstraction has 11810 states and 13599 transitions. [2018-10-23 18:36:54,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:36:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 13599 transitions. [2018-10-23 18:36:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-23 18:36:54,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:54,021 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:36:54,022 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:54,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:54,022 INFO L82 PathProgramCache]: Analyzing trace with hash -24667633, now seen corresponding path program 1 times [2018-10-23 18:36:54,022 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:54,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:54,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:54,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:54,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:54,623 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 4 [2018-10-23 18:36:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-23 18:36:54,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:36:54,913 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 [2018-10-23 18:36:54,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:55,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:36:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-23 18:36:55,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:36:55,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:36:55,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:36:55,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:36:55,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:36:55,376 INFO L87 Difference]: Start difference. First operand 11810 states and 13599 transitions. Second operand 5 states. [2018-10-23 18:37:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:37:08,153 INFO L93 Difference]: Finished difference Result 47115 states and 55729 transitions. [2018-10-23 18:37:08,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:37:08,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 394 [2018-10-23 18:37:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:37:08,234 INFO L225 Difference]: With dead ends: 47115 [2018-10-23 18:37:08,234 INFO L226 Difference]: Without dead ends: 35307 [2018-10-23 18:37:08,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:37:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35307 states. [2018-10-23 18:37:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35307 to 34616. [2018-10-23 18:37:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34616 states. [2018-10-23 18:37:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34616 states to 34616 states and 39995 transitions. [2018-10-23 18:37:09,003 INFO L78 Accepts]: Start accepts. Automaton has 34616 states and 39995 transitions. Word has length 394 [2018-10-23 18:37:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:37:09,004 INFO L481 AbstractCegarLoop]: Abstraction has 34616 states and 39995 transitions. [2018-10-23 18:37:09,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:37:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 34616 states and 39995 transitions. [2018-10-23 18:37:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2018-10-23 18:37:09,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:09,040 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:37:09,041 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:09,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:09,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1816944839, now seen corresponding path program 1 times [2018-10-23 18:37:09,041 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:09,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:09,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:09,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:09,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 843 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-10-23 18:37:10,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:37:10,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:37:10,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:37:10,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:37:10,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:37:10,157 INFO L87 Difference]: Start difference. First operand 34616 states and 39995 transitions. Second operand 3 states. [2018-10-23 18:37:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:37:13,854 INFO L93 Difference]: Finished difference Result 68539 states and 79296 transitions. [2018-10-23 18:37:13,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:37:13,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1029 [2018-10-23 18:37:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:37:13,913 INFO L225 Difference]: With dead ends: 68539 [2018-10-23 18:37:13,913 INFO L226 Difference]: Without dead ends: 34616 [2018-10-23 18:37:13,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:37:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34616 states. [2018-10-23 18:37:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34616 to 34616. [2018-10-23 18:37:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34616 states. [2018-10-23 18:37:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34616 states to 34616 states and 38576 transitions. [2018-10-23 18:37:14,317 INFO L78 Accepts]: Start accepts. Automaton has 34616 states and 38576 transitions. Word has length 1029 [2018-10-23 18:37:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:37:14,321 INFO L481 AbstractCegarLoop]: Abstraction has 34616 states and 38576 transitions. [2018-10-23 18:37:14,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:37:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 34616 states and 38576 transitions. [2018-10-23 18:37:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2018-10-23 18:37:14,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:14,380 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:37:14,380 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:14,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:14,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1904474763, now seen corresponding path program 1 times [2018-10-23 18:37:14,384 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:14,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:14,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:14,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:14,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2018-10-23 18:37:16,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:37:16,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:37:16,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:37:16,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:37:16,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:37:16,147 INFO L87 Difference]: Start difference. First operand 34616 states and 38576 transitions. Second operand 4 states. [2018-10-23 18:37:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:37:21,894 INFO L93 Difference]: Finished difference Result 87887 states and 98563 transitions. [2018-10-23 18:37:21,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:37:21,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1209 [2018-10-23 18:37:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:37:21,955 INFO L225 Difference]: With dead ends: 87887 [2018-10-23 18:37:21,955 INFO L226 Difference]: Without dead ends: 48416 [2018-10-23 18:37:21,985 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 [2018-10-23 18:37:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48416 states. [2018-10-23 18:37:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48416 to 47725. [2018-10-23 18:37:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47725 states. [2018-10-23 18:37:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47725 states to 47725 states and 51902 transitions. [2018-10-23 18:37:22,912 INFO L78 Accepts]: Start accepts. Automaton has 47725 states and 51902 transitions. Word has length 1209 [2018-10-23 18:37:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:37:22,914 INFO L481 AbstractCegarLoop]: Abstraction has 47725 states and 51902 transitions. [2018-10-23 18:37:22,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:37:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand 47725 states and 51902 transitions. [2018-10-23 18:37:22,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2018-10-23 18:37:22,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:22,945 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:37:22,948 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:22,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1245542691, now seen corresponding path program 1 times [2018-10-23 18:37:22,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:22,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:22,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:22,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:22,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:24,230 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-23 18:37:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1699 backedges. 862 proven. 750 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-23 18:37:27,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:37:27,408 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 [2018-10-23 18:37:27,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:27,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:37:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1699 backedges. 1005 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2018-10-23 18:37:28,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:37:28,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2018-10-23 18:37:28,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 18:37:28,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 18:37:28,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-10-23 18:37:28,707 INFO L87 Difference]: Start difference. First operand 47725 states and 51902 transitions. Second operand 13 states. [2018-10-23 18:37:32,351 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-10-23 18:37:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:37:57,674 INFO L93 Difference]: Finished difference Result 139118 states and 150993 transitions. [2018-10-23 18:37:57,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-23 18:37:57,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1242 [2018-10-23 18:37:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:37:57,773 INFO L225 Difference]: With dead ends: 139118 [2018-10-23 18:37:57,773 INFO L226 Difference]: Without dead ends: 92086 [2018-10-23 18:37:57,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1265 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2018-10-23 18:37:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92086 states. [2018-10-23 18:37:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92086 to 64308. [2018-10-23 18:37:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64308 states. [2018-10-23 18:37:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64308 states to 64308 states and 69059 transitions. [2018-10-23 18:37:58,679 INFO L78 Accepts]: Start accepts. Automaton has 64308 states and 69059 transitions. Word has length 1242 [2018-10-23 18:37:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:37:58,680 INFO L481 AbstractCegarLoop]: Abstraction has 64308 states and 69059 transitions. [2018-10-23 18:37:58,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 18:37:58,680 INFO L276 IsEmpty]: Start isEmpty. Operand 64308 states and 69059 transitions. [2018-10-23 18:37:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2018-10-23 18:37:58,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:58,714 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:37:58,714 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:58,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:58,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1296922160, now seen corresponding path program 1 times [2018-10-23 18:37:58,715 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:58,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:58,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:58,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:58,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:59,808 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-23 18:38:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1789 backedges. 1176 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2018-10-23 18:38:00,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:38:00,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:38:00,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:38:00,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:38:00,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:00,786 INFO L87 Difference]: Start difference. First operand 64308 states and 69059 transitions. Second operand 4 states. [2018-10-23 18:38:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:05,937 INFO L93 Difference]: Finished difference Result 141051 states and 151823 transitions. [2018-10-23 18:38:05,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:38:05,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1260 [2018-10-23 18:38:05,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:06,005 INFO L225 Difference]: With dead ends: 141051 [2018-10-23 18:38:06,006 INFO L226 Difference]: Without dead ends: 77436 [2018-10-23 18:38:06,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:06,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77436 states. [2018-10-23 18:38:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77436 to 76745. [2018-10-23 18:38:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76745 states. [2018-10-23 18:38:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76745 states to 76745 states and 81167 transitions. [2018-10-23 18:38:06,729 INFO L78 Accepts]: Start accepts. Automaton has 76745 states and 81167 transitions. Word has length 1260 [2018-10-23 18:38:06,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:06,730 INFO L481 AbstractCegarLoop]: Abstraction has 76745 states and 81167 transitions. [2018-10-23 18:38:06,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:38:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 76745 states and 81167 transitions. [2018-10-23 18:38:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2018-10-23 18:38:06,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:06,751 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:38:06,751 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:06,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:06,752 INFO L82 PathProgramCache]: Analyzing trace with hash 214685907, now seen corresponding path program 1 times [2018-10-23 18:38:06,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:06,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:06,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:06,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:06,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:07,975 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 18:38:08,297 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-23 18:38:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 967 proven. 585 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-10-23 18:38:10,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:38:10,733 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 [2018-10-23 18:38:10,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:11,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:38:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 1101 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2018-10-23 18:38:11,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:38:11,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-23 18:38:11,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 18:38:11,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 18:38:11,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:38:11,755 INFO L87 Difference]: Start difference. First operand 76745 states and 81167 transitions. Second operand 10 states. [2018-10-23 18:38:28,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:28,577 INFO L93 Difference]: Finished difference Result 282462 states and 298620 transitions. [2018-10-23 18:38:28,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 18:38:28,577 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1274 [2018-10-23 18:38:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:28,773 INFO L225 Difference]: With dead ends: 282462 [2018-10-23 18:38:28,773 INFO L226 Difference]: Without dead ends: 187691 [2018-10-23 18:38:28,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1286 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-10-23 18:38:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187691 states. [2018-10-23 18:38:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187691 to 76724. [2018-10-23 18:38:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76724 states. [2018-10-23 18:38:30,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76724 states to 76724 states and 79713 transitions. [2018-10-23 18:38:30,446 INFO L78 Accepts]: Start accepts. Automaton has 76724 states and 79713 transitions. Word has length 1274 [2018-10-23 18:38:30,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:30,447 INFO L481 AbstractCegarLoop]: Abstraction has 76724 states and 79713 transitions. [2018-10-23 18:38:30,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 18:38:30,447 INFO L276 IsEmpty]: Start isEmpty. Operand 76724 states and 79713 transitions. [2018-10-23 18:38:30,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1313 [2018-10-23 18:38:30,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:30,467 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:38:30,467 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:30,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:30,468 INFO L82 PathProgramCache]: Analyzing trace with hash -231780996, now seen corresponding path program 1 times [2018-10-23 18:38:30,468 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:30,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:30,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:30,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:30,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:31,272 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-23 18:38:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2135 backedges. 1164 proven. 0 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2018-10-23 18:38:32,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:38:32,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:38:32,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:38:32,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:38:32,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:32,226 INFO L87 Difference]: Start difference. First operand 76724 states and 79713 transitions. Second operand 4 states. [2018-10-23 18:38:36,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:36,861 INFO L93 Difference]: Finished difference Result 164502 states and 171151 transitions. [2018-10-23 18:38:36,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:38:36,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1312 [2018-10-23 18:38:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:36,955 INFO L225 Difference]: With dead ends: 164502 [2018-10-23 18:38:36,955 INFO L226 Difference]: Without dead ends: 88471 [2018-10-23 18:38:36,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88471 states. [2018-10-23 18:38:37,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88471 to 87089. [2018-10-23 18:38:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87089 states. [2018-10-23 18:38:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87089 states to 87089 states and 90239 transitions. [2018-10-23 18:38:37,661 INFO L78 Accepts]: Start accepts. Automaton has 87089 states and 90239 transitions. Word has length 1312 [2018-10-23 18:38:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:37,662 INFO L481 AbstractCegarLoop]: Abstraction has 87089 states and 90239 transitions. [2018-10-23 18:38:37,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:38:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 87089 states and 90239 transitions. [2018-10-23 18:38:37,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1552 [2018-10-23 18:38:37,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:37,695 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:38:37,696 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:37,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash 805523431, now seen corresponding path program 1 times [2018-10-23 18:38:37,696 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:37,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:37,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:37,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:37,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3215 backedges. 2029 proven. 0 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2018-10-23 18:38:39,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:38:39,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:38:39,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:38:39,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:38:39,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:39,569 INFO L87 Difference]: Start difference. First operand 87089 states and 90239 transitions. Second operand 4 states. [2018-10-23 18:38:45,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:45,156 INFO L93 Difference]: Finished difference Result 210104 states and 218499 transitions. [2018-10-23 18:38:45,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:38:45,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1551 [2018-10-23 18:38:45,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:45,276 INFO L225 Difference]: With dead ends: 210104 [2018-10-23 18:38:45,276 INFO L226 Difference]: Without dead ends: 123708 [2018-10-23 18:38:45,326 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 [2018-10-23 18:38:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123708 states. [2018-10-23 18:38:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123708 to 122326. [2018-10-23 18:38:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122326 states. [2018-10-23 18:38:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122326 states to 122326 states and 125797 transitions. [2018-10-23 18:38:46,863 INFO L78 Accepts]: Start accepts. Automaton has 122326 states and 125797 transitions. Word has length 1551 [2018-10-23 18:38:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:46,864 INFO L481 AbstractCegarLoop]: Abstraction has 122326 states and 125797 transitions. [2018-10-23 18:38:46,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:38:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 122326 states and 125797 transitions. [2018-10-23 18:38:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2018-10-23 18:38:46,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:46,906 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:38:46,906 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:46,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:46,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1219854873, now seen corresponding path program 1 times [2018-10-23 18:38:46,907 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:46,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:46,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:46,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:46,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:47,751 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:38:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3031 backedges. 899 proven. 0 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2018-10-23 18:38:48,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:38:48,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:38:48,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:38:48,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:38:48,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:38:48,895 INFO L87 Difference]: Start difference. First operand 122326 states and 125797 transitions. Second operand 3 states. [2018-10-23 18:38:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:52,394 INFO L93 Difference]: Finished difference Result 243266 states and 250251 transitions. [2018-10-23 18:38:52,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:38:52,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1583 [2018-10-23 18:38:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:52,503 INFO L225 Difference]: With dead ends: 243266 [2018-10-23 18:38:52,503 INFO L226 Difference]: Without dead ends: 120250 [2018-10-23 18:38:52,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:38:52,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120250 states. [2018-10-23 18:38:53,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120250 to 118868. [2018-10-23 18:38:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118868 states. [2018-10-23 18:38:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118868 states to 118868 states and 122015 transitions. [2018-10-23 18:38:53,526 INFO L78 Accepts]: Start accepts. Automaton has 118868 states and 122015 transitions. Word has length 1583 [2018-10-23 18:38:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:53,527 INFO L481 AbstractCegarLoop]: Abstraction has 118868 states and 122015 transitions. [2018-10-23 18:38:53,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:38:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 118868 states and 122015 transitions. [2018-10-23 18:38:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2018-10-23 18:38:53,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:53,580 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:38:53,581 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:53,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash -897894694, now seen corresponding path program 1 times [2018-10-23 18:38:53,581 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:53,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:53,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:53,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:53,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:54,869 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-23 18:38:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1829 proven. 1266 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2018-10-23 18:38:59,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:38:59,599 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:38:59,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:59,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:39:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 2371 trivial. 0 not checked. [2018-10-23 18:39:01,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:39:01,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 18 [2018-10-23 18:39:01,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 18:39:01,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 18:39:01,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-10-23 18:39:01,724 INFO L87 Difference]: Start difference. First operand 118868 states and 122015 transitions. Second operand 18 states. Received shutdown request... [2018-10-23 18:39:46,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-23 18:39:46,433 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:39:46,438 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:39:46,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:39:46 BoogieIcfgContainer [2018-10-23 18:39:46,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:39:46,440 INFO L168 Benchmark]: Toolchain (without parser) took 227245.86 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -559.4 kB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 18:39:46,441 INFO L168 Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:39:46,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1760.87 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:39:46,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 495.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -911.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:39:46,443 INFO L168 Benchmark]: Boogie Preprocessor took 255.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2018-10-23 18:39:46,444 INFO L168 Benchmark]: RCFGBuilder took 7990.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 531.8 MB). Peak memory consumption was 531.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:39:46,445 INFO L168 Benchmark]: TraceAbstraction took 216737.55 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 1.4 GB in the end (delta: 201.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 18:39:46,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1760.87 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 495.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -911.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 255.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7990.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 531.8 MB). Peak memory consumption was 531.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216737.55 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 1.4 GB in the end (delta: 201.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 69). Cancelled while BasicCegarLoop was constructing difference of abstraction (118868states) and FLOYD_HOARE automaton (currently 41 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (105536 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 216.6s OverallTime, 14 OverallIterations, 9 TraceHistogramMax, 173.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7880 SDtfs, 63989 SDslu, 2770 SDs, 0 SdLazy, 142333 SolverSat, 12924 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 136.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5199 GetRequests, 5050 SyntacticMatches, 15 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122326occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 149831 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 18202 NumberOfCodeBlocks, 18202 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 18183 ConstructedInterpolants, 0 QuantifiedInterpolants, 67442445 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5804 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 24479/27092 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown