java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:16:19,212 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:16:19,215 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:16:19,231 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:16:19,231 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:16:19,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:16:19,234 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:16:19,237 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:16:19,239 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:16:19,240 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:16:19,248 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:16:19,248 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:16:19,249 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:16:19,252 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:16:19,254 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:16:19,255 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:16:19,256 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:16:19,258 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:16:19,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:16:19,264 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:16:19,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:16:19,269 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:16:19,272 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:16:19,272 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:16:19,272 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:16:19,273 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:16:19,274 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:16:19,275 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:16:19,278 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:16:19,279 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:16:19,279 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:16:19,280 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:16:19,283 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 20:16:19,297 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:16:19,298 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:16:19,298 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:16:19,299 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:16:19,299 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:16:19,299 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:16:19,300 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:16:19,300 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:16:19,300 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:16:19,300 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:16:19,300 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:16:19,301 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:16:19,301 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:16:19,301 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:16:19,301 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:16:19,301 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:16:19,302 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:16:19,302 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:16:19,302 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:16:19,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:16:19,303 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:16:19,303 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:16:19,303 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:16:19,303 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:16:19,303 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:16:19,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:16:19,304 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:16:19,304 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:16:19,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:16:19,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:16:19,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:16:19,372 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:16:19,373 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:16:19,374 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-10-23 20:16:19,448 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b22f112d7/a89c8cdc07ab4d28834abec89c7a3fef/FLAGdd53795fb [2018-10-23 20:16:20,236 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:16:20,237 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-10-23 20:16:20,266 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b22f112d7/a89c8cdc07ab4d28834abec89c7a3fef/FLAGdd53795fb [2018-10-23 20:16:20,288 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b22f112d7/a89c8cdc07ab4d28834abec89c7a3fef [2018-10-23 20:16:20,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:16:20,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:16:20,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:16:20,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:16:20,310 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:16:20,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:16:20" (1/1) ... [2018-10-23 20:16:20,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e66237e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:20, skipping insertion in model container [2018-10-23 20:16:20,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:16:20" (1/1) ... [2018-10-23 20:16:20,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:16:20,524 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:16:21,973 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:16:21,979 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:16:22,695 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:16:22,732 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:16:22,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22 WrapperNode [2018-10-23 20:16:22,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:16:22,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:16:22,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:16:22,734 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:16:22,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:22,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:23,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:16:23,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:16:23,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:16:23,561 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:16:23,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:23,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:23,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:23,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:23,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:23,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:23,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (1/1) ... [2018-10-23 20:16:24,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:16:24,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:16:24,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:16:24,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:16:24,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (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 20:16:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:16:24,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:16:24,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:16:37,694 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:16:37,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:16:37 BoogieIcfgContainer [2018-10-23 20:16:37,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:16:37,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:16:37,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:16:37,699 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:16:37,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:16:20" (1/3) ... [2018-10-23 20:16:37,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21024558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:16:37, skipping insertion in model container [2018-10-23 20:16:37,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:16:22" (2/3) ... [2018-10-23 20:16:37,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21024558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:16:37, skipping insertion in model container [2018-10-23 20:16:37,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:16:37" (3/3) ... [2018-10-23 20:16:37,704 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label15_true-unreach-call.c [2018-10-23 20:16:37,714 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:16:37,724 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:16:37,742 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:16:37,804 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:16:37,805 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:16:37,805 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:16:37,805 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:16:37,805 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:16:37,805 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:16:37,806 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:16:37,806 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:16:37,806 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:16:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:16:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-23 20:16:37,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:37,874 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:37,877 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:37,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:37,884 INFO L82 PathProgramCache]: Analyzing trace with hash 680225122, now seen corresponding path program 1 times [2018-10-23 20:16:37,886 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:37,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:37,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:37,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:37,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:38,210 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 20:16:38,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:38,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:38,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:16:38,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:16:38,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:38,236 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 20:16:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:16:53,584 INFO L93 Difference]: Finished difference Result 3993 states and 7498 transitions. [2018-10-23 20:16:53,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:16:53,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-23 20:16:53,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:16:53,631 INFO L225 Difference]: With dead ends: 3993 [2018-10-23 20:16:53,631 INFO L226 Difference]: Without dead ends: 2887 [2018-10-23 20:16:53,640 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 20:16:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-10-23 20:16:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1936. [2018-10-23 20:16:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2018-10-23 20:16:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3550 transitions. [2018-10-23 20:16:53,791 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3550 transitions. Word has length 37 [2018-10-23 20:16:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:16:53,791 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 3550 transitions. [2018-10-23 20:16:53,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:16:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3550 transitions. [2018-10-23 20:16:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-23 20:16:53,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:16:53,798 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:16:53,798 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:16:53,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:16:53,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2124441306, now seen corresponding path program 1 times [2018-10-23 20:16:53,799 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:16:53,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:16:53,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:53,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:16:53,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:16:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:16:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:16:54,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:16:54,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:16:54,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:16:54,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:16:54,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:16:54,106 INFO L87 Difference]: Start difference. First operand 1936 states and 3550 transitions. Second operand 4 states. [2018-10-23 20:17:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:10,071 INFO L93 Difference]: Finished difference Result 7120 states and 13344 transitions. [2018-10-23 20:17:10,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:10,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-23 20:17:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:10,100 INFO L225 Difference]: With dead ends: 7120 [2018-10-23 20:17:10,100 INFO L226 Difference]: Without dead ends: 5186 [2018-10-23 20:17:10,105 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 20:17:10,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2018-10-23 20:17:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3554. [2018-10-23 20:17:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2018-10-23 20:17:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 6248 transitions. [2018-10-23 20:17:10,186 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 6248 transitions. Word has length 106 [2018-10-23 20:17:10,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:10,187 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 6248 transitions. [2018-10-23 20:17:10,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 6248 transitions. [2018-10-23 20:17:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-23 20:17:10,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:10,192 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:17:10,192 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:10,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:10,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1046179583, now seen corresponding path program 1 times [2018-10-23 20:17:10,193 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:10,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:10,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:10,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:10,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:17:10,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:10,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:17:10,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:17:10,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:17:10,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:17:10,371 INFO L87 Difference]: Start difference. First operand 3554 states and 6248 transitions. Second operand 4 states. [2018-10-23 20:17:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:20,358 INFO L93 Difference]: Finished difference Result 12674 states and 22438 transitions. [2018-10-23 20:17:20,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:20,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-23 20:17:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:20,404 INFO L225 Difference]: With dead ends: 12674 [2018-10-23 20:17:20,404 INFO L226 Difference]: Without dead ends: 9122 [2018-10-23 20:17:20,412 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 20:17:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2018-10-23 20:17:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 9115. [2018-10-23 20:17:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2018-10-23 20:17:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 14199 transitions. [2018-10-23 20:17:20,586 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 14199 transitions. Word has length 119 [2018-10-23 20:17:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:20,587 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 14199 transitions. [2018-10-23 20:17:20,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:17:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 14199 transitions. [2018-10-23 20:17:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-23 20:17:20,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:20,591 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:17:20,591 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:20,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash -171132688, now seen corresponding path program 1 times [2018-10-23 20:17:20,592 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:20,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:20,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:20,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:20,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:20,970 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:17:21,934 WARN L179 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:17:22,099 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 4 [2018-10-23 20:17:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:17:22,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:22,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:17:22,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:17:22,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:17:22,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:17:22,244 INFO L87 Difference]: Start difference. First operand 9115 states and 14199 transitions. Second operand 5 states. [2018-10-23 20:17:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:34,121 INFO L93 Difference]: Finished difference Result 29264 states and 45079 transitions. [2018-10-23 20:17:34,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:17:34,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-23 20:17:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:34,190 INFO L225 Difference]: With dead ends: 29264 [2018-10-23 20:17:34,190 INFO L226 Difference]: Without dead ends: 20151 [2018-10-23 20:17:34,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:17:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2018-10-23 20:17:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 20149. [2018-10-23 20:17:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20149 states. [2018-10-23 20:17:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 28284 transitions. [2018-10-23 20:17:34,852 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 28284 transitions. Word has length 140 [2018-10-23 20:17:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:34,853 INFO L481 AbstractCegarLoop]: Abstraction has 20149 states and 28284 transitions. [2018-10-23 20:17:34,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:17:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 28284 transitions. [2018-10-23 20:17:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-23 20:17:34,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:34,858 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:17:34,858 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:34,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:34,859 INFO L82 PathProgramCache]: Analyzing trace with hash -621884010, now seen corresponding path program 1 times [2018-10-23 20:17:34,859 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:34,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:34,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:34,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:34,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-23 20:17:35,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:17:35,239 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 20:17:35,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:35,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:17:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-10-23 20:17:35,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:17:35,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 20:17:35,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:17:35,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:17:35,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:17:35,521 INFO L87 Difference]: Start difference. First operand 20149 states and 28284 transitions. Second operand 5 states. [2018-10-23 20:17:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:49,209 INFO L93 Difference]: Finished difference Result 70270 states and 99699 transitions. [2018-10-23 20:17:49,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:17:49,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-10-23 20:17:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:17:49,308 INFO L225 Difference]: With dead ends: 70270 [2018-10-23 20:17:49,308 INFO L226 Difference]: Without dead ends: 50911 [2018-10-23 20:17:49,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:17:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50911 states. [2018-10-23 20:17:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50911 to 50886. [2018-10-23 20:17:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50886 states. [2018-10-23 20:17:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50886 states to 50886 states and 65786 transitions. [2018-10-23 20:17:50,149 INFO L78 Accepts]: Start accepts. Automaton has 50886 states and 65786 transitions. Word has length 163 [2018-10-23 20:17:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:17:50,150 INFO L481 AbstractCegarLoop]: Abstraction has 50886 states and 65786 transitions. [2018-10-23 20:17:50,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:17:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand 50886 states and 65786 transitions. [2018-10-23 20:17:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-10-23 20:17:50,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:17:50,178 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:17:50,178 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:17:50,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:17:50,179 INFO L82 PathProgramCache]: Analyzing trace with hash -12343617, now seen corresponding path program 1 times [2018-10-23 20:17:50,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:17:50,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:17:50,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:50,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:17:50,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:17:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:17:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-23 20:17:50,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:17:50,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:17:50,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:17:50,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:17:50,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:17:50,613 INFO L87 Difference]: Start difference. First operand 50886 states and 65786 transitions. Second operand 3 states. [2018-10-23 20:17:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:17:59,930 INFO L93 Difference]: Finished difference Result 140377 states and 182260 transitions. [2018-10-23 20:17:59,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:17:59,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 451 [2018-10-23 20:17:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:00,069 INFO L225 Difference]: With dead ends: 140377 [2018-10-23 20:18:00,069 INFO L226 Difference]: Without dead ends: 90281 [2018-10-23 20:18:00,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:18:00,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90281 states. [2018-10-23 20:18:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90281 to 90277. [2018-10-23 20:18:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90277 states. [2018-10-23 20:18:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90277 states to 90277 states and 109583 transitions. [2018-10-23 20:18:01,148 INFO L78 Accepts]: Start accepts. Automaton has 90277 states and 109583 transitions. Word has length 451 [2018-10-23 20:18:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:01,149 INFO L481 AbstractCegarLoop]: Abstraction has 90277 states and 109583 transitions. [2018-10-23 20:18:01,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:18:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 90277 states and 109583 transitions. [2018-10-23 20:18:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-23 20:18:01,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:01,183 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:18:01,183 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:01,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:01,184 INFO L82 PathProgramCache]: Analyzing trace with hash 919668609, now seen corresponding path program 1 times [2018-10-23 20:18:01,184 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:01,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:01,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:01,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:01,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:01,841 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-23 20:18:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 280 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-23 20:18:02,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:18:02,137 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 20:18:02,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:02,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:18:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-23 20:18:02,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:18:02,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:18:02,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:02,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:02,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:02,561 INFO L87 Difference]: Start difference. First operand 90277 states and 109583 transitions. Second operand 4 states. [2018-10-23 20:18:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:20,543 INFO L93 Difference]: Finished difference Result 216837 states and 260197 transitions. [2018-10-23 20:18:20,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:20,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-10-23 20:18:20,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:20,686 INFO L225 Difference]: With dead ends: 216837 [2018-10-23 20:18:20,687 INFO L226 Difference]: Without dead ends: 127350 [2018-10-23 20:18:20,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:20,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127350 states. [2018-10-23 20:18:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127350 to 112340. [2018-10-23 20:18:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112340 states. [2018-10-23 20:18:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112340 states to 112340 states and 132973 transitions. [2018-10-23 20:18:22,881 INFO L78 Accepts]: Start accepts. Automaton has 112340 states and 132973 transitions. Word has length 478 [2018-10-23 20:18:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:22,882 INFO L481 AbstractCegarLoop]: Abstraction has 112340 states and 132973 transitions. [2018-10-23 20:18:22,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:18:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 112340 states and 132973 transitions. [2018-10-23 20:18:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-10-23 20:18:22,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:22,914 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:18:22,914 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:22,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:22,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1449190218, now seen corresponding path program 1 times [2018-10-23 20:18:22,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:22,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:22,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:22,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:22,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:23,397 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 20:18:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-23 20:18:23,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:23,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:18:23,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:18:23,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:18:23,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:18:23,687 INFO L87 Difference]: Start difference. First operand 112340 states and 132973 transitions. Second operand 4 states. [2018-10-23 20:18:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:32,952 INFO L93 Difference]: Finished difference Result 233345 states and 275866 transitions. [2018-10-23 20:18:32,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:18:32,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 507 [2018-10-23 20:18:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:33,073 INFO L225 Difference]: With dead ends: 233345 [2018-10-23 20:18:33,073 INFO L226 Difference]: Without dead ends: 105178 [2018-10-23 20:18:33,137 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 20:18:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105178 states. [2018-10-23 20:18:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105178 to 98084. [2018-10-23 20:18:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98084 states. [2018-10-23 20:18:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98084 states to 98084 states and 113509 transitions. [2018-10-23 20:18:34,846 INFO L78 Accepts]: Start accepts. Automaton has 98084 states and 113509 transitions. Word has length 507 [2018-10-23 20:18:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:18:34,847 INFO L481 AbstractCegarLoop]: Abstraction has 98084 states and 113509 transitions. [2018-10-23 20:18:34,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:18:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 98084 states and 113509 transitions. [2018-10-23 20:18:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-10-23 20:18:34,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:18:34,869 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:34,869 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:18:34,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:18:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1208094930, now seen corresponding path program 1 times [2018-10-23 20:18:34,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:18:34,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:18:34,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:34,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:18:34,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:18:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:18:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-10-23 20:18:35,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:18:35,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:18:35,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:18:35,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:18:35,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:35,229 INFO L87 Difference]: Start difference. First operand 98084 states and 113509 transitions. Second operand 5 states. [2018-10-23 20:18:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:18:57,982 INFO L93 Difference]: Finished difference Result 279172 states and 323486 transitions. [2018-10-23 20:18:57,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:18:57,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 530 [2018-10-23 20:18:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:18:58,177 INFO L225 Difference]: With dead ends: 279172 [2018-10-23 20:18:58,177 INFO L226 Difference]: Without dead ends: 181878 [2018-10-23 20:18:58,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:18:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181878 states. [2018-10-23 20:19:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181878 to 178561. [2018-10-23 20:19:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178561 states. [2018-10-23 20:19:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178561 states to 178561 states and 204132 transitions. [2018-10-23 20:19:00,857 INFO L78 Accepts]: Start accepts. Automaton has 178561 states and 204132 transitions. Word has length 530 [2018-10-23 20:19:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:00,857 INFO L481 AbstractCegarLoop]: Abstraction has 178561 states and 204132 transitions. [2018-10-23 20:19:00,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:19:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 178561 states and 204132 transitions. [2018-10-23 20:19:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-10-23 20:19:00,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:00,880 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:19:00,880 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:00,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1080461888, now seen corresponding path program 1 times [2018-10-23 20:19:00,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:00,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:00,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:00,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:00,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-10-23 20:19:01,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:01,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:01,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:01,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:01,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:01,333 INFO L87 Difference]: Start difference. First operand 178561 states and 204132 transitions. Second operand 4 states. [2018-10-23 20:19:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:15,163 INFO L93 Difference]: Finished difference Result 441480 states and 505315 transitions. [2018-10-23 20:19:15,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:15,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 580 [2018-10-23 20:19:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:15,474 INFO L225 Difference]: With dead ends: 441480 [2018-10-23 20:19:15,474 INFO L226 Difference]: Without dead ends: 263709 [2018-10-23 20:19:15,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263709 states. [2018-10-23 20:19:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263709 to 255783. [2018-10-23 20:19:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255783 states. [2018-10-23 20:19:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255783 states to 255783 states and 285194 transitions. [2018-10-23 20:19:18,743 INFO L78 Accepts]: Start accepts. Automaton has 255783 states and 285194 transitions. Word has length 580 [2018-10-23 20:19:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:18,744 INFO L481 AbstractCegarLoop]: Abstraction has 255783 states and 285194 transitions. [2018-10-23 20:19:18,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 255783 states and 285194 transitions. [2018-10-23 20:19:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2018-10-23 20:19:18,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:18,765 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:18,765 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:18,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:18,765 INFO L82 PathProgramCache]: Analyzing trace with hash -54768319, now seen corresponding path program 1 times [2018-10-23 20:19:18,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:18,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:18,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:18,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:18,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:19,201 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 20:19:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 825 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-10-23 20:19:24,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:24,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:24,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:24,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:24,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:24,501 INFO L87 Difference]: Start difference. First operand 255783 states and 285194 transitions. Second operand 4 states. [2018-10-23 20:19:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:19:39,676 INFO L93 Difference]: Finished difference Result 509222 states and 567865 transitions. [2018-10-23 20:19:39,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:19:39,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 620 [2018-10-23 20:19:39,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:19:39,973 INFO L225 Difference]: With dead ends: 509222 [2018-10-23 20:19:39,973 INFO L226 Difference]: Without dead ends: 254229 [2018-10-23 20:19:40,089 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 20:19:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254229 states. [2018-10-23 20:19:42,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254229 to 253416. [2018-10-23 20:19:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253416 states. [2018-10-23 20:19:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253416 states to 253416 states and 276457 transitions. [2018-10-23 20:19:43,834 INFO L78 Accepts]: Start accepts. Automaton has 253416 states and 276457 transitions. Word has length 620 [2018-10-23 20:19:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:19:43,834 INFO L481 AbstractCegarLoop]: Abstraction has 253416 states and 276457 transitions. [2018-10-23 20:19:43,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:19:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 253416 states and 276457 transitions. [2018-10-23 20:19:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-23 20:19:43,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:19:43,857 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:43,858 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:19:43,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:19:43,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1989168516, now seen corresponding path program 1 times [2018-10-23 20:19:43,858 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:19:43,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:19:43,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:43,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:19:43,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:19:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:19:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 746 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-23 20:19:44,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:19:44,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:19:44,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:19:44,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:19:44,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:19:44,558 INFO L87 Difference]: Start difference. First operand 253416 states and 276457 transitions. Second operand 4 states. [2018-10-23 20:20:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:01,756 INFO L93 Difference]: Finished difference Result 593683 states and 648028 transitions. [2018-10-23 20:20:01,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:20:01,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 644 [2018-10-23 20:20:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:02,087 INFO L225 Difference]: With dead ends: 593683 [2018-10-23 20:20:02,087 INFO L226 Difference]: Without dead ends: 341057 [2018-10-23 20:20:02,151 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 20:20:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341057 states. [2018-10-23 20:20:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341057 to 340122. [2018-10-23 20:20:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340122 states. [2018-10-23 20:20:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340122 states to 340122 states and 369335 transitions. [2018-10-23 20:20:05,593 INFO L78 Accepts]: Start accepts. Automaton has 340122 states and 369335 transitions. Word has length 644 [2018-10-23 20:20:05,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:05,593 INFO L481 AbstractCegarLoop]: Abstraction has 340122 states and 369335 transitions. [2018-10-23 20:20:05,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:20:05,593 INFO L276 IsEmpty]: Start isEmpty. Operand 340122 states and 369335 transitions. [2018-10-23 20:20:05,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-10-23 20:20:05,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:05,617 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:20:05,617 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:05,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:05,617 INFO L82 PathProgramCache]: Analyzing trace with hash -186113841, now seen corresponding path program 1 times [2018-10-23 20:20:05,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:05,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:05,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:05,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:05,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 820 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-10-23 20:20:07,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:07,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:07,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:20:07,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:20:07,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:20:07,097 INFO L87 Difference]: Start difference. First operand 340122 states and 369335 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 20:20:08,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:20:08,046 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:20:08,051 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:20:08,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:20:08 BoogieIcfgContainer [2018-10-23 20:20:08,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:20:08,052 INFO L168 Benchmark]: Toolchain (without parser) took 227751.00 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -398.7 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-23 20:20:08,053 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:20:08,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2428.80 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:20:08,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 827.46 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 830.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:20:08,055 INFO L168 Benchmark]: Boogie Preprocessor took 470.34 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.6 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:20:08,056 INFO L168 Benchmark]: RCFGBuilder took 13663.31 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 254.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 12.2 MB). Peak memory consumption was 609.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:20:08,057 INFO L168 Benchmark]: TraceAbstraction took 210355.17 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 305.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:20:08,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2428.80 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 827.46 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 830.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 470.34 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.6 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13663.31 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 254.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 12.2 MB). Peak memory consumption was 609.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210355.17 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 305.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 120). Cancelled while BasicCegarLoop was constructing difference of abstraction (340122states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (2145 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 210.2s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 175.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9166 SDtfs, 26000 SDslu, 3311 SDs, 0 SdLazy, 58835 SolverSat, 15609 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 144.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 692 GetRequests, 656 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340122occurred 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: 19.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 37716 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 5679 NumberOfCodeBlocks, 5679 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5664 ConstructedInterpolants, 0 QuantifiedInterpolants, 5570796 SizeOfPredicates, 1 NumberOfNonLiveVariables, 828 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 6391/6399 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown