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_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:24:35,416 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:24:35,418 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:24:35,430 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:24:35,431 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:24:35,432 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:24:35,433 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:24:35,435 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:24:35,437 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:24:35,438 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:24:35,439 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:24:35,439 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:24:35,440 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:24:35,441 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:24:35,442 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:24:35,443 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:24:35,444 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:24:35,446 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:24:35,448 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:24:35,449 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:24:35,451 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:24:35,453 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:24:35,456 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:24:35,456 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:24:35,457 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:24:35,458 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:24:35,465 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:24:35,466 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:24:35,467 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:24:35,468 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:24:35,468 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:24:35,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:24:35,477 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 16:24:35,507 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:24:35,507 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:24:35,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:24:35,508 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:24:35,509 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:24:35,510 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:24:35,510 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:24:35,510 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:24:35,510 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:24:35,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:24:35,511 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:24:35,511 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:24:35,511 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:24:35,511 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:24:35,511 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:24:35,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:24:35,512 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:24:35,513 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:24:35,513 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:24:35,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:24:35,513 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:24:35,513 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:24:35,514 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:24:35,514 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:24:35,514 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:24:35,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:24:35,514 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:24:35,515 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:24:35,565 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:24:35,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:24:35,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:24:35,582 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:24:35,583 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:24:35,583 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46_true-unreach-call.c [2018-10-24 16:24:35,642 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79b4b1528/bc59916c8667491f8e16b3ca00d7c638/FLAGa64009d04 [2018-10-24 16:24:36,449 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:24:36,450 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label46_true-unreach-call.c [2018-10-24 16:24:36,487 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79b4b1528/bc59916c8667491f8e16b3ca00d7c638/FLAGa64009d04 [2018-10-24 16:24:36,509 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/79b4b1528/bc59916c8667491f8e16b3ca00d7c638 [2018-10-24 16:24:36,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:24:36,524 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:24:36,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:24:36,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:24:36,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:24:36,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:24:36" (1/1) ... [2018-10-24 16:24:36,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:36, skipping insertion in model container [2018-10-24 16:24:36,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:24:36" (1/1) ... [2018-10-24 16:24:36,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:24:36,760 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:24:38,310 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:24:38,315 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:24:38,980 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:24:39,016 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:24:39,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39 WrapperNode [2018-10-24 16:24:39,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:24:39,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:24:39,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:24:39,018 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:24:39,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:39,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:39,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:24:39,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:24:39,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:24:39,889 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:24:39,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:39,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:39,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:39,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:40,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:40,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:40,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (1/1) ... [2018-10-24 16:24:40,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:24:40,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:24:40,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:24:40,387 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:24:40,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (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 16:24:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:24:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:24:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:24:54,995 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:24:54,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:24:54 BoogieIcfgContainer [2018-10-24 16:24:54,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:24:54,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:24:54,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:24:55,001 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:24:55,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:24:36" (1/3) ... [2018-10-24 16:24:55,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1eee61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:24:55, skipping insertion in model container [2018-10-24 16:24:55,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:24:39" (2/3) ... [2018-10-24 16:24:55,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1eee61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:24:55, skipping insertion in model container [2018-10-24 16:24:55,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:24:54" (3/3) ... [2018-10-24 16:24:55,005 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label46_true-unreach-call.c [2018-10-24 16:24:55,016 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:24:55,026 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:24:55,044 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:24:55,096 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:24:55,097 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:24:55,097 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:24:55,097 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:24:55,098 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:24:55,098 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:24:55,098 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:24:55,098 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:24:55,098 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:24:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:24:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-24 16:24:55,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:55,169 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, 1, 1, 1, 1, 1, 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 16:24:55,172 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:55,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:55,178 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-10-24 16:24:55,180 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:55,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:55,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:55,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:55,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:55,675 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 16:24:55,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:55,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:24:55,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:55,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:55,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:55,702 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:25:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:10,844 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-10-24 16:25:10,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:10,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-24 16:25:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:10,890 INFO L225 Difference]: With dead ends: 3863 [2018-10-24 16:25:10,890 INFO L226 Difference]: Without dead ends: 2757 [2018-10-24 16:25:10,899 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 16:25:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-10-24 16:25:11,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-10-24 16:25:11,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-10-24 16:25:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-10-24 16:25:11,071 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 67 [2018-10-24 16:25:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:11,073 INFO L481 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-10-24 16:25:11,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-10-24 16:25:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 16:25:11,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:11,086 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, 2, 2, 2, 2, 2, 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] [2018-10-24 16:25:11,086 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:11,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash 316082808, now seen corresponding path program 1 times [2018-10-24 16:25:11,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:11,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:11,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:11,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:11,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:25:11,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:11,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:11,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:11,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:11,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:11,488 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-10-24 16:25:28,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:28,836 INFO L93 Difference]: Finished difference Result 10269 states and 17048 transitions. [2018-10-24 16:25:28,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:28,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2018-10-24 16:25:28,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:28,885 INFO L225 Difference]: With dead ends: 10269 [2018-10-24 16:25:28,885 INFO L226 Difference]: Without dead ends: 7535 [2018-10-24 16:25:28,892 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 16:25:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-10-24 16:25:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7527. [2018-10-24 16:25:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7527 states. [2018-10-24 16:25:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 11327 transitions. [2018-10-24 16:25:29,043 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 11327 transitions. Word has length 154 [2018-10-24 16:25:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:29,044 INFO L481 AbstractCegarLoop]: Abstraction has 7527 states and 11327 transitions. [2018-10-24 16:25:29,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 11327 transitions. [2018-10-24 16:25:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 16:25:29,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:29,048 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, 2, 2, 2, 2, 2, 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] [2018-10-24 16:25:29,048 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:29,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:29,049 INFO L82 PathProgramCache]: Analyzing trace with hash -34421127, now seen corresponding path program 1 times [2018-10-24 16:25:29,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:29,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:29,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:29,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:29,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:29,775 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:25:29,940 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 4 [2018-10-24 16:25:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-24 16:25:30,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:25:30,052 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 16:25:30,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:30,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:25:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-24 16:25:30,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:25:30,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-24 16:25:30,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:25:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:25:30,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:25:30,329 INFO L87 Difference]: Start difference. First operand 7527 states and 11327 transitions. Second operand 6 states. [2018-10-24 16:25:45,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:45,445 INFO L93 Difference]: Finished difference Result 31771 states and 47113 transitions. [2018-10-24 16:25:45,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:25:45,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-24 16:25:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:45,535 INFO L225 Difference]: With dead ends: 31771 [2018-10-24 16:25:45,536 INFO L226 Difference]: Without dead ends: 24246 [2018-10-24 16:25:45,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:25:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24246 states. [2018-10-24 16:25:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24246 to 16988. [2018-10-24 16:25:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16988 states. [2018-10-24 16:25:45,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16988 states to 16988 states and 22868 transitions. [2018-10-24 16:25:45,896 INFO L78 Accepts]: Start accepts. Automaton has 16988 states and 22868 transitions. Word has length 164 [2018-10-24 16:25:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:45,896 INFO L481 AbstractCegarLoop]: Abstraction has 16988 states and 22868 transitions. [2018-10-24 16:25:45,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:25:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 16988 states and 22868 transitions. [2018-10-24 16:25:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-24 16:25:45,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:45,905 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, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:25:45,905 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:45,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2015316394, now seen corresponding path program 1 times [2018-10-24 16:25:45,906 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:45,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:45,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:45,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:45,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-24 16:25:46,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:46,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:46,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:25:46,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:25:46,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:25:46,358 INFO L87 Difference]: Start difference. First operand 16988 states and 22868 transitions. Second operand 5 states. [2018-10-24 16:26:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:02,614 INFO L93 Difference]: Finished difference Result 76838 states and 105623 transitions. [2018-10-24 16:26:02,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:26:02,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2018-10-24 16:26:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:02,762 INFO L225 Difference]: With dead ends: 76838 [2018-10-24 16:26:02,763 INFO L226 Difference]: Without dead ends: 60640 [2018-10-24 16:26:02,798 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 16:26:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60640 states. [2018-10-24 16:26:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60640 to 60479. [2018-10-24 16:26:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60479 states. [2018-10-24 16:26:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60479 states to 60479 states and 78589 transitions. [2018-10-24 16:26:03,751 INFO L78 Accepts]: Start accepts. Automaton has 60479 states and 78589 transitions. Word has length 310 [2018-10-24 16:26:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:03,752 INFO L481 AbstractCegarLoop]: Abstraction has 60479 states and 78589 transitions. [2018-10-24 16:26:03,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:26:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 60479 states and 78589 transitions. [2018-10-24 16:26:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-24 16:26:03,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:03,768 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, 4, 4, 4, 4, 4, 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, 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 16:26:03,768 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:03,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:03,769 INFO L82 PathProgramCache]: Analyzing trace with hash 982787291, now seen corresponding path program 1 times [2018-10-24 16:26:03,769 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:03,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:03,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:03,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:03,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 272 proven. 4 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-10-24 16:26:04,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:26:04,212 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 [2018-10-24 16:26:04,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:04,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:26:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-24 16:26:05,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:26:05,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:26:05,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:05,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:05,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:05,016 INFO L87 Difference]: Start difference. First operand 60479 states and 78589 transitions. Second operand 4 states. [2018-10-24 16:26:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:16,678 INFO L93 Difference]: Finished difference Result 188831 states and 245712 transitions. [2018-10-24 16:26:16,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:16,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 311 [2018-10-24 16:26:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:16,953 INFO L225 Difference]: With dead ends: 188831 [2018-10-24 16:26:16,954 INFO L226 Difference]: Without dead ends: 129142 [2018-10-24 16:26:17,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 311 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 16:26:17,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129142 states. [2018-10-24 16:26:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129142 to 91995. [2018-10-24 16:26:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91995 states. [2018-10-24 16:26:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91995 states to 91995 states and 115044 transitions. [2018-10-24 16:26:18,881 INFO L78 Accepts]: Start accepts. Automaton has 91995 states and 115044 transitions. Word has length 311 [2018-10-24 16:26:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:18,881 INFO L481 AbstractCegarLoop]: Abstraction has 91995 states and 115044 transitions. [2018-10-24 16:26:18,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 91995 states and 115044 transitions. [2018-10-24 16:26:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-24 16:26:18,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:18,903 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, 3, 3, 3, 3, 3, 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] [2018-10-24 16:26:18,904 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:18,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:18,904 INFO L82 PathProgramCache]: Analyzing trace with hash 786676273, now seen corresponding path program 1 times [2018-10-24 16:26:18,904 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:18,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:18,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:18,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:18,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 16:26:19,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:19,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:26:19,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:19,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:19,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:19,397 INFO L87 Difference]: Start difference. First operand 91995 states and 115044 transitions. Second operand 4 states. [2018-10-24 16:26:29,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:29,725 INFO L93 Difference]: Finished difference Result 246226 states and 309396 transitions. [2018-10-24 16:26:29,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:29,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2018-10-24 16:26:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:30,946 INFO L225 Difference]: With dead ends: 246226 [2018-10-24 16:26:30,946 INFO L226 Difference]: Without dead ends: 155021 [2018-10-24 16:26:31,026 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 16:26:31,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155021 states. [2018-10-24 16:26:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155021 to 154227. [2018-10-24 16:26:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154227 states. [2018-10-24 16:26:32,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154227 states to 154227 states and 181771 transitions. [2018-10-24 16:26:32,484 INFO L78 Accepts]: Start accepts. Automaton has 154227 states and 181771 transitions. Word has length 365 [2018-10-24 16:26:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:32,484 INFO L481 AbstractCegarLoop]: Abstraction has 154227 states and 181771 transitions. [2018-10-24 16:26:32,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 154227 states and 181771 transitions. [2018-10-24 16:26:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-24 16:26:32,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:32,503 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, 4, 4, 4, 4, 4, 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, 2, 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] [2018-10-24 16:26:32,503 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:32,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:32,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1624357672, now seen corresponding path program 1 times [2018-10-24 16:26:32,504 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:32,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:32,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:32,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:32,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 368 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-24 16:26:32,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:32,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:26:32,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:32,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:32,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:32,958 INFO L87 Difference]: Start difference. First operand 154227 states and 181771 transitions. Second operand 4 states. [2018-10-24 16:26:46,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:46,793 INFO L93 Difference]: Finished difference Result 347893 states and 410964 transitions. [2018-10-24 16:26:46,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:46,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 368 [2018-10-24 16:26:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:47,027 INFO L225 Difference]: With dead ends: 347893 [2018-10-24 16:26:47,027 INFO L226 Difference]: Without dead ends: 194456 [2018-10-24 16:26:47,112 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 16:26:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194456 states. [2018-10-24 16:26:49,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194456 to 192835. [2018-10-24 16:26:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192835 states. [2018-10-24 16:26:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192835 states to 192835 states and 218397 transitions. [2018-10-24 16:26:49,920 INFO L78 Accepts]: Start accepts. Automaton has 192835 states and 218397 transitions. Word has length 368 [2018-10-24 16:26:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:49,921 INFO L481 AbstractCegarLoop]: Abstraction has 192835 states and 218397 transitions. [2018-10-24 16:26:49,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 192835 states and 218397 transitions. [2018-10-24 16:26:49,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-24 16:26:49,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:49,935 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, 5, 5, 5, 5, 5, 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, 3, 3, 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] [2018-10-24 16:26:49,935 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:49,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:49,935 INFO L82 PathProgramCache]: Analyzing trace with hash -486199203, now seen corresponding path program 1 times [2018-10-24 16:26:49,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:49,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:49,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:49,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:49,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-10-24 16:26:50,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:50,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:26:50,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:26:50,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:26:50,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:26:50,363 INFO L87 Difference]: Start difference. First operand 192835 states and 218397 transitions. Second operand 6 states. [2018-10-24 16:27:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:11,457 INFO L93 Difference]: Finished difference Result 444159 states and 502602 transitions. [2018-10-24 16:27:11,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:27:11,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 400 [2018-10-24 16:27:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:11,793 INFO L225 Difference]: With dead ends: 444159 [2018-10-24 16:27:11,793 INFO L226 Difference]: Without dead ends: 252114 [2018-10-24 16:27:13,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:27:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252114 states. [2018-10-24 16:27:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252114 to 248075. [2018-10-24 16:27:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248075 states. [2018-10-24 16:27:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248075 states to 248075 states and 278529 transitions. [2018-10-24 16:27:16,881 INFO L78 Accepts]: Start accepts. Automaton has 248075 states and 278529 transitions. Word has length 400 [2018-10-24 16:27:16,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:16,882 INFO L481 AbstractCegarLoop]: Abstraction has 248075 states and 278529 transitions. [2018-10-24 16:27:16,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:27:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 248075 states and 278529 transitions. [2018-10-24 16:27:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-10-24 16:27:16,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:16,896 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, 5, 5, 5, 5, 5, 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, 3, 3, 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] [2018-10-24 16:27:16,896 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:16,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:16,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1213374830, now seen corresponding path program 1 times [2018-10-24 16:27:16,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:16,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:16,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:16,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:16,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-10-24 16:27:17,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:27:17,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:27:17,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:27:17,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:27:17,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:27:17,161 INFO L87 Difference]: Start difference. First operand 248075 states and 278529 transitions. Second operand 3 states. [2018-10-24 16:27:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:30,345 INFO L93 Difference]: Finished difference Result 494547 states and 554798 transitions. [2018-10-24 16:27:30,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:27:30,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 429 [2018-10-24 16:27:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:31,168 INFO L225 Difference]: With dead ends: 494547 [2018-10-24 16:27:31,168 INFO L226 Difference]: Without dead ends: 247262 [2018-10-24 16:27:31,250 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 16:27:31,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247262 states. [2018-10-24 16:27:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247262 to 247254. [2018-10-24 16:27:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247254 states. [2018-10-24 16:27:33,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247254 states to 247254 states and 267774 transitions. [2018-10-24 16:27:33,868 INFO L78 Accepts]: Start accepts. Automaton has 247254 states and 267774 transitions. Word has length 429 [2018-10-24 16:27:33,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:33,869 INFO L481 AbstractCegarLoop]: Abstraction has 247254 states and 267774 transitions. [2018-10-24 16:27:33,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:27:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 247254 states and 267774 transitions. [2018-10-24 16:27:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-10-24 16:27:33,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:33,877 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:27:33,878 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:33,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:33,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1008175477, now seen corresponding path program 1 times [2018-10-24 16:27:33,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:33,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:33,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:33,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:33,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:34,471 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:27:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 16:27:35,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:27:35,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:27:35,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:27:35,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:27:35,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:27:35,332 INFO L87 Difference]: Start difference. First operand 247254 states and 267774 transitions. Second operand 4 states. [2018-10-24 16:27:48,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:48,070 INFO L93 Difference]: Finished difference Result 537880 states and 582836 transitions. [2018-10-24 16:27:48,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:27:48,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 432 [2018-10-24 16:27:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:48,459 INFO L225 Difference]: With dead ends: 537880 [2018-10-24 16:27:48,460 INFO L226 Difference]: Without dead ends: 291416 [2018-10-24 16:27:48,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:27:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291416 states. [2018-10-24 16:27:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291416 to 274813. [2018-10-24 16:27:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274813 states. [2018-10-24 16:27:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274813 states to 274813 states and 295141 transitions. [2018-10-24 16:27:52,518 INFO L78 Accepts]: Start accepts. Automaton has 274813 states and 295141 transitions. Word has length 432 [2018-10-24 16:27:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:52,519 INFO L481 AbstractCegarLoop]: Abstraction has 274813 states and 295141 transitions. [2018-10-24 16:27:52,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:27:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 274813 states and 295141 transitions. [2018-10-24 16:27:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-10-24 16:27:52,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:52,531 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, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:27:52,531 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:52,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 463802685, now seen corresponding path program 1 times [2018-10-24 16:27:52,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:52,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:52,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:52,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:52,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:52,890 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 16:27:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 455 proven. 110 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-10-24 16:27:54,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:27:54,243 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:27:54,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:54,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:27:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-10-24 16:27:54,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:27:54,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 16:27:54,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:27:54,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:27:54,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:27:54,565 INFO L87 Difference]: Start difference. First operand 274813 states and 295141 transitions. Second operand 8 states. [2018-10-24 16:28:00,119 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 Received shutdown request... [2018-10-24 16:28:22,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:28:22,315 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:28:22,320 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:28:22,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:28:22 BoogieIcfgContainer [2018-10-24 16:28:22,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:28:22,321 INFO L168 Benchmark]: Toolchain (without parser) took 225799.32 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -496.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 16:28:22,322 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:28:22,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2489.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:28:22,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 870.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -982.6 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:28:22,325 INFO L168 Benchmark]: Boogie Preprocessor took 497.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 73.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:28:22,325 INFO L168 Benchmark]: RCFGBuilder took 14610.26 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 288.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -75.0 MB). Peak memory consumption was 639.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:28:22,326 INFO L168 Benchmark]: TraceAbstraction took 207322.56 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 244.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 16:28:22,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2489.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 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 870.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -982.6 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 497.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 73.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14610.26 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 288.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -75.0 MB). Peak memory consumption was 639.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207322.56 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 244.7 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: 210]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 210). Cancelled while BasicCegarLoop was constructing difference of abstraction (274813states) and FLOYD_HOARE automaton (currently 14 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (353569 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 207.2s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 180.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8249 SDtfs, 39107 SDslu, 3600 SDs, 0 SdLazy, 68290 SolverSat, 17852 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 137.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1007 GetRequests, 965 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274813occurred in iteration=10, 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: 17.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 67660 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 4419 NumberOfCodeBlocks, 4419 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4405 ConstructedInterpolants, 0 QuantifiedInterpolants, 4905700 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1290 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 5409/5527 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown