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_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:17:44,131 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:17:44,133 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:17:44,146 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:17:44,146 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:17:44,147 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:17:44,149 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:17:44,151 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:17:44,153 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:17:44,154 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:17:44,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:17:44,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:17:44,156 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:17:44,157 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:17:44,158 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:17:44,162 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:17:44,163 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:17:44,165 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:17:44,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:17:44,173 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:17:44,177 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:17:44,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:17:44,186 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:17:44,187 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:17:44,187 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:17:44,190 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:17:44,191 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:17:44,191 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:17:44,194 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:17:44,198 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:17:44,198 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:17:44,199 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:17:44,201 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:17:44,236 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:17:44,237 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:17:44,237 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:17:44,238 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:17:44,239 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:17:44,239 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:17:44,239 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:17:44,239 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:17:44,239 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:17:44,240 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:17:44,240 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:17:44,240 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:17:44,240 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:17:44,240 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:17:44,241 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:17:44,242 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:17:44,242 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:17:44,242 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:17:44,243 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:17:44,243 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:17:44,243 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:17:44,243 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:17:44,243 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:17:44,244 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:17:44,244 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:17:44,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:17:44,244 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:17:44,244 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:17:44,310 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:17:44,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:17:44,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:17:44,329 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:17:44,329 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:17:44,330 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-10-24 16:17:44,397 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d651103db/3d5b4f594cf6424a98a2bffb6c554d8a/FLAGbb2f22a05 [2018-10-24 16:17:45,247 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:17:45,248 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-10-24 16:17:45,289 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d651103db/3d5b4f594cf6424a98a2bffb6c554d8a/FLAGbb2f22a05 [2018-10-24 16:17:45,312 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d651103db/3d5b4f594cf6424a98a2bffb6c554d8a [2018-10-24 16:17:45,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:17:45,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:17:45,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:17:45,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:17:45,335 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:17:45,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:17:45" (1/1) ... [2018-10-24 16:17:45,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:45, skipping insertion in model container [2018-10-24 16:17:45,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:17:45" (1/1) ... [2018-10-24 16:17:45,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:17:45,516 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:17:46,911 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:17:46,916 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:17:47,664 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:17:47,701 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:17:47,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47 WrapperNode [2018-10-24 16:17:47,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:17:47,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:17:47,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:17:47,703 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:17:47,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:47,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:48,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:17:48,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:17:48,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:17:48,487 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:17:48,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:48,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:48,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:48,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:48,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:48,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:48,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... [2018-10-24 16:17:48,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:17:48,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:17:48,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:17:48,922 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:17:48,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:17:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:17:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:17:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:18:01,670 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:18:01,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:18:01 BoogieIcfgContainer [2018-10-24 16:18:01,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:18:01,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:18:01,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:18:01,676 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:18:01,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:17:45" (1/3) ... [2018-10-24 16:18:01,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:18:01, skipping insertion in model container [2018-10-24 16:18:01,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:17:47" (2/3) ... [2018-10-24 16:18:01,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:18:01, skipping insertion in model container [2018-10-24 16:18:01,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:18:01" (3/3) ... [2018-10-24 16:18:01,680 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label00_true-unreach-call.c [2018-10-24 16:18:01,690 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:18:01,701 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:18:01,726 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:18:01,782 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:18:01,782 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:18:01,782 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:18:01,782 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:18:01,783 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:18:01,783 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:18:01,783 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:18:01,783 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:18:01,783 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:18:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:18:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-24 16:18:01,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:01,832 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, 1] [2018-10-24 16:18:01,834 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:01,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:01,840 INFO L82 PathProgramCache]: Analyzing trace with hash -387853398, now seen corresponding path program 1 times [2018-10-24 16:18:01,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:01,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:01,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:01,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:01,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:02,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:02,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:18:02,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:18:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:18:02,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:02,360 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:18:19,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:19,423 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 16:18:19,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:18:19,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-24 16:18:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:19,478 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 16:18:19,478 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 16:18:19,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:18:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 16:18:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 16:18:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 16:18:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 16:18:19,675 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 38 [2018-10-24 16:18:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:19,675 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 16:18:19,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:18:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 16:18:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 16:18:19,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:19,684 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:18:19,684 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:19,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1177519246, now seen corresponding path program 1 times [2018-10-24 16:18:19,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:19,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:19,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:19,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:19,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:20,891 WARN L179 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:18:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:21,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:21,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:18:21,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:18:21,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:18:21,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:18:21,186 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 16:18:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:37,867 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 16:18:37,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:18:37,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-10-24 16:18:37,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:18:37,895 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 16:18:37,895 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 16:18:37,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:18:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 16:18:37,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 16:18:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 16:18:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 16:18:37,994 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 104 [2018-10-24 16:18:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:18:37,995 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 16:18:37,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:18:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 16:18:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 16:18:38,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:18:38,008 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, 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] [2018-10-24 16:18:38,009 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:18:38,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:18:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1624504843, now seen corresponding path program 1 times [2018-10-24 16:18:38,010 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:18:38,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:18:38,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:38,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:18:38,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:18:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:18:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:18:38,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:18:38,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:18:38,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:18:38,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:18:38,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:18:38,337 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-24 16:18:59,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:18:59,960 INFO L93 Difference]: Finished difference Result 19933 states and 31606 transitions. [2018-10-24 16:18:59,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:18:59,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2018-10-24 16:18:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:00,033 INFO L225 Difference]: With dead ends: 19933 [2018-10-24 16:19:00,033 INFO L226 Difference]: Without dead ends: 15606 [2018-10-24 16:19:00,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:19:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15606 states. [2018-10-24 16:19:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15606 to 15434. [2018-10-24 16:19:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15434 states. [2018-10-24 16:19:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15434 states to 15434 states and 21663 transitions. [2018-10-24 16:19:00,381 INFO L78 Accepts]: Start accepts. Automaton has 15434 states and 21663 transitions. Word has length 164 [2018-10-24 16:19:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:00,382 INFO L481 AbstractCegarLoop]: Abstraction has 15434 states and 21663 transitions. [2018-10-24 16:19:00,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:19:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 15434 states and 21663 transitions. [2018-10-24 16:19:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-24 16:19:00,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:00,392 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:00,393 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:00,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash -952743899, now seen corresponding path program 1 times [2018-10-24 16:19:00,393 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:00,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:00,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:00,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:00,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 71 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 16:19:00,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:19:00,775 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:19:00,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:00,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:19:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:19:01,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:19:01,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:19:01,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:01,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:01,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:01,003 INFO L87 Difference]: Start difference. First operand 15434 states and 21663 transitions. Second operand 4 states. [2018-10-24 16:19:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:11,990 INFO L93 Difference]: Finished difference Result 50627 states and 72460 transitions. [2018-10-24 16:19:11,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:19:11,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2018-10-24 16:19:11,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:12,076 INFO L225 Difference]: With dead ends: 50627 [2018-10-24 16:19:12,076 INFO L226 Difference]: Without dead ends: 35983 [2018-10-24 16:19:12,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:12,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35983 states. [2018-10-24 16:19:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35983 to 23303. [2018-10-24 16:19:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23303 states. [2018-10-24 16:19:12,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23303 states to 23303 states and 30637 transitions. [2018-10-24 16:19:12,624 INFO L78 Accepts]: Start accepts. Automaton has 23303 states and 30637 transitions. Word has length 244 [2018-10-24 16:19:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:12,624 INFO L481 AbstractCegarLoop]: Abstraction has 23303 states and 30637 transitions. [2018-10-24 16:19:12,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:19:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 23303 states and 30637 transitions. [2018-10-24 16:19:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-24 16:19:12,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:12,633 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:12,633 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:12,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2137794292, now seen corresponding path program 1 times [2018-10-24 16:19:12,633 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:12,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:12,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:12,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:12,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 16:19:12,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:12,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:19:12,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:19:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:19:12,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:19:12,977 INFO L87 Difference]: Start difference. First operand 23303 states and 30637 transitions. Second operand 3 states. [2018-10-24 16:19:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:19,454 INFO L93 Difference]: Finished difference Result 62355 states and 82233 transitions. [2018-10-24 16:19:19,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:19:19,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2018-10-24 16:19:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:19,531 INFO L225 Difference]: With dead ends: 62355 [2018-10-24 16:19:19,531 INFO L226 Difference]: Without dead ends: 39842 [2018-10-24 16:19:19,564 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 [2018-10-24 16:19:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39842 states. [2018-10-24 16:19:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39842 to 37475. [2018-10-24 16:19:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37475 states. [2018-10-24 16:19:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37475 states to 37475 states and 45423 transitions. [2018-10-24 16:19:20,044 INFO L78 Accepts]: Start accepts. Automaton has 37475 states and 45423 transitions. Word has length 258 [2018-10-24 16:19:20,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:20,045 INFO L481 AbstractCegarLoop]: Abstraction has 37475 states and 45423 transitions. [2018-10-24 16:19:20,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:19:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37475 states and 45423 transitions. [2018-10-24 16:19:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-24 16:19:20,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:20,054 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:20,054 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:20,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:20,055 INFO L82 PathProgramCache]: Analyzing trace with hash 849089761, now seen corresponding path program 1 times [2018-10-24 16:19:20,055 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:20,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:20,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:20,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:20,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-24 16:19:20,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:20,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:19:20,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:19:20,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:19:20,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:19:20,588 INFO L87 Difference]: Start difference. First operand 37475 states and 45423 transitions. Second operand 5 states. [2018-10-24 16:19:50,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:19:50,197 INFO L93 Difference]: Finished difference Result 113066 states and 141847 transitions. [2018-10-24 16:19:50,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:19:50,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2018-10-24 16:19:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:19:50,333 INFO L225 Difference]: With dead ends: 113066 [2018-10-24 16:19:50,334 INFO L226 Difference]: Without dead ends: 76381 [2018-10-24 16:19:50,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:19:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76381 states. [2018-10-24 16:19:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76381 to 76202. [2018-10-24 16:19:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76202 states. [2018-10-24 16:19:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76202 states to 76202 states and 92170 transitions. [2018-10-24 16:19:51,528 INFO L78 Accepts]: Start accepts. Automaton has 76202 states and 92170 transitions. Word has length 329 [2018-10-24 16:19:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:19:51,528 INFO L481 AbstractCegarLoop]: Abstraction has 76202 states and 92170 transitions. [2018-10-24 16:19:51,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:19:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 76202 states and 92170 transitions. [2018-10-24 16:19:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-24 16:19:51,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:51,542 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:19:51,542 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:51,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:51,543 INFO L82 PathProgramCache]: Analyzing trace with hash -882119493, now seen corresponding path program 1 times [2018-10-24 16:19:51,543 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:51,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:51,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:51,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:51,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:19:52,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:52,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:19:52,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:19:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:19:52,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:19:52,381 INFO L87 Difference]: Start difference. First operand 76202 states and 92170 transitions. Second operand 4 states. [2018-10-24 16:20:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:05,915 INFO L93 Difference]: Finished difference Result 249363 states and 301827 transitions. [2018-10-24 16:20:05,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:05,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 345 [2018-10-24 16:20:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:06,158 INFO L225 Difference]: With dead ends: 249363 [2018-10-24 16:20:06,158 INFO L226 Difference]: Without dead ends: 173951 [2018-10-24 16:20:06,234 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 [2018-10-24 16:20:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173951 states. [2018-10-24 16:20:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173951 to 168388. [2018-10-24 16:20:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168388 states. [2018-10-24 16:20:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168388 states to 168388 states and 195843 transitions. [2018-10-24 16:20:08,483 INFO L78 Accepts]: Start accepts. Automaton has 168388 states and 195843 transitions. Word has length 345 [2018-10-24 16:20:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:08,484 INFO L481 AbstractCegarLoop]: Abstraction has 168388 states and 195843 transitions. [2018-10-24 16:20:08,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 168388 states and 195843 transitions. [2018-10-24 16:20:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-24 16:20:08,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:08,500 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, 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, 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] [2018-10-24 16:20:08,500 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:08,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:08,500 INFO L82 PathProgramCache]: Analyzing trace with hash -585037851, now seen corresponding path program 1 times [2018-10-24 16:20:08,501 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:08,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:08,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:08,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:08,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-24 16:20:08,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:08,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:08,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:20:08,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:20:08,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:20:08,745 INFO L87 Difference]: Start difference. First operand 168388 states and 195843 transitions. Second operand 3 states. [2018-10-24 16:20:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:19,453 INFO L93 Difference]: Finished difference Result 335967 states and 390570 transitions. [2018-10-24 16:20:19,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:20:19,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 360 [2018-10-24 16:20:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:19,657 INFO L225 Difference]: With dead ends: 335967 [2018-10-24 16:20:19,657 INFO L226 Difference]: Without dead ends: 160468 [2018-10-24 16:20:19,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:20:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160468 states. [2018-10-24 16:20:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160468 to 153362. [2018-10-24 16:20:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153362 states. [2018-10-24 16:20:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153362 states to 153362 states and 170512 transitions. [2018-10-24 16:20:21,151 INFO L78 Accepts]: Start accepts. Automaton has 153362 states and 170512 transitions. Word has length 360 [2018-10-24 16:20:21,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:21,151 INFO L481 AbstractCegarLoop]: Abstraction has 153362 states and 170512 transitions. [2018-10-24 16:20:21,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:20:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 153362 states and 170512 transitions. [2018-10-24 16:20:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-24 16:20:21,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:21,161 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:21,161 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:21,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:21,161 INFO L82 PathProgramCache]: Analyzing trace with hash -804455487, now seen corresponding path program 1 times [2018-10-24 16:20:21,161 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:21,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:21,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:21,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:21,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-24 16:20:21,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:21,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:20:21,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:21,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:21,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:21,524 INFO L87 Difference]: Start difference. First operand 153362 states and 170512 transitions. Second operand 4 states. [2018-10-24 16:20:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:30,721 INFO L93 Difference]: Finished difference Result 315391 states and 350233 transitions. [2018-10-24 16:20:30,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:30,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-10-24 16:20:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:30,884 INFO L225 Difference]: With dead ends: 315391 [2018-10-24 16:20:30,884 INFO L226 Difference]: Without dead ends: 148583 [2018-10-24 16:20:30,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148583 states. [2018-10-24 16:20:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148583 to 143063. [2018-10-24 16:20:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143063 states. [2018-10-24 16:20:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143063 states to 143063 states and 157974 transitions. [2018-10-24 16:20:32,167 INFO L78 Accepts]: Start accepts. Automaton has 143063 states and 157974 transitions. Word has length 396 [2018-10-24 16:20:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:32,168 INFO L481 AbstractCegarLoop]: Abstraction has 143063 states and 157974 transitions. [2018-10-24 16:20:32,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:32,168 INFO L276 IsEmpty]: Start isEmpty. Operand 143063 states and 157974 transitions. [2018-10-24 16:20:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-24 16:20:32,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:32,175 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, 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:32,175 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:32,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:32,176 INFO L82 PathProgramCache]: Analyzing trace with hash -326556179, now seen corresponding path program 1 times [2018-10-24 16:20:32,176 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:32,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:32,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:32,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:32,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 16:20:33,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:33,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:20:33,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:33,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:33,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:33,984 INFO L87 Difference]: Start difference. First operand 143063 states and 157974 transitions. Second operand 4 states. [2018-10-24 16:20:43,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:43,228 INFO L93 Difference]: Finished difference Result 325565 states and 360319 transitions. [2018-10-24 16:20:43,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:43,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 419 [2018-10-24 16:20:43,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:43,404 INFO L225 Difference]: With dead ends: 325565 [2018-10-24 16:20:43,404 INFO L226 Difference]: Without dead ends: 180921 [2018-10-24 16:20:43,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:43,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180921 states. [2018-10-24 16:20:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180921 to 176937. [2018-10-24 16:20:45,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176937 states. [2018-10-24 16:20:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176937 states to 176937 states and 191594 transitions. [2018-10-24 16:20:46,127 INFO L78 Accepts]: Start accepts. Automaton has 176937 states and 191594 transitions. Word has length 419 [2018-10-24 16:20:46,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:46,128 INFO L481 AbstractCegarLoop]: Abstraction has 176937 states and 191594 transitions. [2018-10-24 16:20:46,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 176937 states and 191594 transitions. [2018-10-24 16:20:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-10-24 16:20:46,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:46,136 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, 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:46,136 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:46,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:46,137 INFO L82 PathProgramCache]: Analyzing trace with hash 38868407, now seen corresponding path program 1 times [2018-10-24 16:20:46,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:46,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:46,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:46,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:46,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:20:46,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:46,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:20:46,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:46,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:46,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:46,687 INFO L87 Difference]: Start difference. First operand 176937 states and 191594 transitions. Second operand 4 states. [2018-10-24 16:20:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:56,139 INFO L93 Difference]: Finished difference Result 352247 states and 381873 transitions. [2018-10-24 16:20:56,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:56,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 449 [2018-10-24 16:20:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:56,360 INFO L225 Difference]: With dead ends: 352247 [2018-10-24 16:20:56,360 INFO L226 Difference]: Without dead ends: 176100 [2018-10-24 16:20:56,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:56,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176100 states. [2018-10-24 16:20:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176100 to 175311. [2018-10-24 16:20:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175311 states. [2018-10-24 16:21:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175311 states to 175311 states and 185395 transitions. [2018-10-24 16:21:05,967 INFO L78 Accepts]: Start accepts. Automaton has 175311 states and 185395 transitions. Word has length 449 [2018-10-24 16:21:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:05,968 INFO L481 AbstractCegarLoop]: Abstraction has 175311 states and 185395 transitions. [2018-10-24 16:21:05,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 175311 states and 185395 transitions. [2018-10-24 16:21:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-10-24 16:21:05,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:05,978 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, 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, 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] [2018-10-24 16:21:05,978 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:05,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:05,979 INFO L82 PathProgramCache]: Analyzing trace with hash 276135368, now seen corresponding path program 1 times [2018-10-24 16:21:05,979 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:05,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:05,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:05,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:05,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:21:06,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:06,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:06,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:06,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:06,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:06,482 INFO L87 Difference]: Start difference. First operand 175311 states and 185395 transitions. Second operand 4 states. [2018-10-24 16:21:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:16,373 INFO L93 Difference]: Finished difference Result 377421 states and 399456 transitions. [2018-10-24 16:21:16,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:16,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 518 [2018-10-24 16:21:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:16,635 INFO L225 Difference]: With dead ends: 377421 [2018-10-24 16:21:16,635 INFO L226 Difference]: Without dead ends: 201321 [2018-10-24 16:21:16,702 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 [2018-10-24 16:21:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201321 states. [2018-10-24 16:21:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201321 to 191840. [2018-10-24 16:21:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191840 states. [2018-10-24 16:21:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191840 states to 191840 states and 200115 transitions. [2018-10-24 16:21:18,991 INFO L78 Accepts]: Start accepts. Automaton has 191840 states and 200115 transitions. Word has length 518 [2018-10-24 16:21:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:18,992 INFO L481 AbstractCegarLoop]: Abstraction has 191840 states and 200115 transitions. [2018-10-24 16:21:18,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 191840 states and 200115 transitions. [2018-10-24 16:21:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2018-10-24 16:21:19,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:19,014 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, 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, 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] [2018-10-24 16:21:19,014 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:19,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:19,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1128287145, now seen corresponding path program 1 times [2018-10-24 16:21:19,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:19,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:19,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:19,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:19,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:19,634 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:21:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1117 backedges. 806 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-10-24 16:21:20,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:20,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:20,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:20,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:20,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:20,283 INFO L87 Difference]: Start difference. First operand 191840 states and 200115 transitions. Second operand 4 states. [2018-10-24 16:21:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:30,298 INFO L93 Difference]: Finished difference Result 384474 states and 401063 transitions. [2018-10-24 16:21:30,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:30,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 636 [2018-10-24 16:21:30,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:30,519 INFO L225 Difference]: With dead ends: 384474 [2018-10-24 16:21:30,520 INFO L226 Difference]: Without dead ends: 193424 [2018-10-24 16:21:30,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193424 states. [2018-10-24 16:21:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193424 to 190264. [2018-10-24 16:21:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190264 states. Received shutdown request... [2018-10-24 16:21:32,654 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:21:32,659 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:21:32,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:21:32 BoogieIcfgContainer [2018-10-24 16:21:32,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:21:32,660 INFO L168 Benchmark]: Toolchain (without parser) took 227335.38 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -94.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:21:32,662 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:21:32,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2374.85 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:21:32,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 783.47 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 832.0 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 73.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:21:32,665 INFO L168 Benchmark]: Boogie Preprocessor took 434.49 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: 80.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:21:32,666 INFO L168 Benchmark]: RCFGBuilder took 12750.35 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 236.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 32.5 MB). Peak memory consumption was 582.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:21:32,667 INFO L168 Benchmark]: TraceAbstraction took 210987.14 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 568.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:21:32,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2374.85 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 783.47 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 832.0 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 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 434.49 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: 80.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12750.35 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 236.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 32.5 MB). Peak memory consumption was 582.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210987.14 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 568.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while ReachableStatesComputation was computing reachable states (189034 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 210.8s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 177.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12214 SDtfs, 27751 SDslu, 3371 SDs, 0 SdLazy, 64707 SolverSat, 14783 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 145.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 263 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191840occurred 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: 24.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 48687 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 4504 NumberOfCodeBlocks, 4504 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4490 ConstructedInterpolants, 0 QuantifiedInterpolants, 3814494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 341 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 5192/5196 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown