java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:13:50,263 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:13:50,265 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:13:50,278 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:13:50,278 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:13:50,279 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:13:50,280 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:13:50,282 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:13:50,284 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:13:50,285 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:13:50,285 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:13:50,286 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:13:50,287 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:13:50,288 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:13:50,289 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:13:50,289 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:13:50,290 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:13:50,292 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:13:50,294 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:13:50,296 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:13:50,297 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:13:50,298 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:13:50,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:13:50,301 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:13:50,301 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:13:50,302 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:13:50,303 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:13:50,304 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:13:50,304 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:13:50,306 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:13:50,306 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:13:50,306 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:13:50,309 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 16:13:50,338 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:13:50,338 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:13:50,339 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:13:50,339 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:13:50,340 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:13:50,343 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:13:50,343 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:13:50,343 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:13:50,343 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:13:50,344 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:13:50,344 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:13:50,344 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:13:50,344 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:13:50,344 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:13:50,344 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:13:50,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:13:50,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:13:50,346 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:13:50,346 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:13:50,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:13:50,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:13:50,346 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:13:50,347 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:13:50,347 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:13:50,347 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:13:50,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:13:50,347 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:13:50,347 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:13:50,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:13:50,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:13:50,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:13:50,410 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:13:50,411 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:13:50,411 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-10-24 16:13:50,470 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c258b379b/f9fe82d91c944fa581e220cfbd1adaeb/FLAG71e49f69c [2018-10-24 16:13:51,277 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:13:51,278 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-10-24 16:13:51,307 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c258b379b/f9fe82d91c944fa581e220cfbd1adaeb/FLAG71e49f69c [2018-10-24 16:13:51,323 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c258b379b/f9fe82d91c944fa581e220cfbd1adaeb [2018-10-24 16:13:51,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:13:51,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:13:51,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:13:51,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:13:51,344 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:13:51,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:13:51" (1/1) ... [2018-10-24 16:13:51,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a6a4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:51, skipping insertion in model container [2018-10-24 16:13:51,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:13:51" (1/1) ... [2018-10-24 16:13:51,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:13:51,509 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:13:52,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:13:52,852 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:13:53,441 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:13:53,475 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:13:53,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53 WrapperNode [2018-10-24 16:13:53,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:13:53,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:13:53,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:13:53,479 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:13:53,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:53,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:54,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:13:54,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:13:54,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:13:54,116 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:13:54,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:54,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:54,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:54,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:54,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:54,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:54,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (1/1) ... [2018-10-24 16:13:54,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:13:54,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:13:54,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:13:54,492 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:13:54,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (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 16:13:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:13:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:13:54,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:14:03,353 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:14:03,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:14:03 BoogieIcfgContainer [2018-10-24 16:14:03,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:14:03,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:14:03,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:14:03,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:14:03,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:13:51" (1/3) ... [2018-10-24 16:14:03,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8d23aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:14:03, skipping insertion in model container [2018-10-24 16:14:03,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:53" (2/3) ... [2018-10-24 16:14:03,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8d23aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:14:03, skipping insertion in model container [2018-10-24 16:14:03,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:14:03" (3/3) ... [2018-10-24 16:14:03,366 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27_true-unreach-call.c [2018-10-24 16:14:03,376 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:14:03,387 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:14:03,405 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:14:03,448 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:14:03,449 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:14:03,449 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:14:03,449 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:14:03,449 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:14:03,449 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:14:03,449 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:14:03,449 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:14:03,450 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:14:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:14:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 16:14:03,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:03,493 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] [2018-10-24 16:14:03,496 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:03,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:03,508 INFO L82 PathProgramCache]: Analyzing trace with hash 18549650, now seen corresponding path program 1 times [2018-10-24 16:14:03,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:03,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:03,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:03,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:03,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:04,000 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 16:14:04,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:04,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:14:04,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:14:04,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:14:04,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:04,029 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 16:14:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:17,097 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-24 16:14:17,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:14:17,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-10-24 16:14:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:17,143 INFO L225 Difference]: With dead ends: 3162 [2018-10-24 16:14:17,144 INFO L226 Difference]: Without dead ends: 2336 [2018-10-24 16:14:17,152 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 16:14:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-24 16:14:17,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2018-10-24 16:14:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2018-10-24 16:14:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2556 transitions. [2018-10-24 16:14:17,289 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2556 transitions. Word has length 32 [2018-10-24 16:14:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:17,290 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2556 transitions. [2018-10-24 16:14:17,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2556 transitions. [2018-10-24 16:14:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 16:14:17,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:17,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:17,295 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:17,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 347203639, now seen corresponding path program 1 times [2018-10-24 16:14:17,296 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:17,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:17,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:17,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:17,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:14:17,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:17,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:14:17,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:14:17,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:14:17,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:17,659 INFO L87 Difference]: Start difference. First operand 1568 states and 2556 transitions. Second operand 4 states. [2018-10-24 16:14:28,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:28,713 INFO L93 Difference]: Finished difference Result 6142 states and 10096 transitions. [2018-10-24 16:14:28,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:14:28,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-10-24 16:14:28,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:28,738 INFO L225 Difference]: With dead ends: 6142 [2018-10-24 16:14:28,739 INFO L226 Difference]: Without dead ends: 4576 [2018-10-24 16:14:28,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2018-10-24 16:14:28,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2018-10-24 16:14:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-10-24 16:14:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6531 transitions. [2018-10-24 16:14:28,830 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6531 transitions. Word has length 108 [2018-10-24 16:14:28,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:28,831 INFO L481 AbstractCegarLoop]: Abstraction has 4576 states and 6531 transitions. [2018-10-24 16:14:28,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:28,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6531 transitions. [2018-10-24 16:14:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 16:14:28,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:28,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:28,836 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:28,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash 633186002, now seen corresponding path program 1 times [2018-10-24 16:14:28,836 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:28,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:28,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:28,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:28,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:14:29,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:29,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:14:29,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:14:29,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:14:29,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:14:29,235 INFO L87 Difference]: Start difference. First operand 4576 states and 6531 transitions. Second operand 6 states. [2018-10-24 16:14:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:40,841 INFO L93 Difference]: Finished difference Result 15166 states and 21142 transitions. [2018-10-24 16:14:40,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:14:40,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-24 16:14:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:40,902 INFO L225 Difference]: With dead ends: 15166 [2018-10-24 16:14:40,903 INFO L226 Difference]: Without dead ends: 10592 [2018-10-24 16:14:40,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:14:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-10-24 16:14:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10592. [2018-10-24 16:14:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10592 states. [2018-10-24 16:14:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 14292 transitions. [2018-10-24 16:14:41,119 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 14292 transitions. Word has length 110 [2018-10-24 16:14:41,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:41,120 INFO L481 AbstractCegarLoop]: Abstraction has 10592 states and 14292 transitions. [2018-10-24 16:14:41,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:14:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 14292 transitions. [2018-10-24 16:14:41,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-24 16:14:41,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:41,133 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:14:41,133 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:41,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash 443921409, now seen corresponding path program 1 times [2018-10-24 16:14:41,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:41,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:41,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:41,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:41,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:41,734 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 16:14:42,049 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-24 16:14:42,553 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-10-24 16:14:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 125 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:14:42,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:14:42,680 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 16:14:42,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:42,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:14:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:14:43,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:14:43,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:14:43,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:14:43,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:14:43,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:14:43,040 INFO L87 Difference]: Start difference. First operand 10592 states and 14292 transitions. Second operand 7 states. [2018-10-24 16:14:44,823 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-24 16:15:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:05,263 INFO L93 Difference]: Finished difference Result 41518 states and 54744 transitions. [2018-10-24 16:15:05,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:15:05,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2018-10-24 16:15:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:05,348 INFO L225 Difference]: With dead ends: 41518 [2018-10-24 16:15:05,348 INFO L226 Difference]: Without dead ends: 29421 [2018-10-24 16:15:05,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:15:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29421 states. [2018-10-24 16:15:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29421 to 20367. [2018-10-24 16:15:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20367 states. [2018-10-24 16:15:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20367 states to 20367 states and 25010 transitions. [2018-10-24 16:15:05,816 INFO L78 Accepts]: Start accepts. Automaton has 20367 states and 25010 transitions. Word has length 182 [2018-10-24 16:15:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:05,816 INFO L481 AbstractCegarLoop]: Abstraction has 20367 states and 25010 transitions. [2018-10-24 16:15:05,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:15:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 20367 states and 25010 transitions. [2018-10-24 16:15:05,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-24 16:15:05,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:05,821 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:15:05,822 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:05,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:05,822 INFO L82 PathProgramCache]: Analyzing trace with hash -454335340, now seen corresponding path program 1 times [2018-10-24 16:15:05,822 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:05,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:05,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:05,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:05,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:15:06,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:06,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:15:06,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:15:06,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:15:06,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:15:06,139 INFO L87 Difference]: Start difference. First operand 20367 states and 25010 transitions. Second operand 3 states. [2018-10-24 16:15:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:11,981 INFO L93 Difference]: Finished difference Result 46748 states and 57858 transitions. [2018-10-24 16:15:11,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:15:11,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2018-10-24 16:15:11,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:12,034 INFO L225 Difference]: With dead ends: 46748 [2018-10-24 16:15:12,034 INFO L226 Difference]: Without dead ends: 27135 [2018-10-24 16:15:12,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:15:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27135 states. [2018-10-24 16:15:12,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27135 to 27135. [2018-10-24 16:15:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27135 states. [2018-10-24 16:15:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27135 states to 27135 states and 32871 transitions. [2018-10-24 16:15:12,416 INFO L78 Accepts]: Start accepts. Automaton has 27135 states and 32871 transitions. Word has length 264 [2018-10-24 16:15:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:12,416 INFO L481 AbstractCegarLoop]: Abstraction has 27135 states and 32871 transitions. [2018-10-24 16:15:12,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:15:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 27135 states and 32871 transitions. [2018-10-24 16:15:12,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-24 16:15:12,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:12,424 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:15:12,424 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:12,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:12,425 INFO L82 PathProgramCache]: Analyzing trace with hash -410168344, now seen corresponding path program 1 times [2018-10-24 16:15:12,425 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:12,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:12,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:12,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:12,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:15:12,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:12,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:15:12,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:15:12,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:15:12,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:15:12,769 INFO L87 Difference]: Start difference. First operand 27135 states and 32871 transitions. Second operand 3 states. [2018-10-24 16:15:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:19,390 INFO L93 Difference]: Finished difference Result 53516 states and 64983 transitions. [2018-10-24 16:15:19,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:15:19,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2018-10-24 16:15:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:19,432 INFO L225 Difference]: With dead ends: 53516 [2018-10-24 16:15:19,433 INFO L226 Difference]: Without dead ends: 27135 [2018-10-24 16:15:19,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:15:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27135 states. [2018-10-24 16:15:19,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27135 to 25631. [2018-10-24 16:15:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25631 states. [2018-10-24 16:15:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 29966 transitions. [2018-10-24 16:15:19,791 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 29966 transitions. Word has length 334 [2018-10-24 16:15:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:19,792 INFO L481 AbstractCegarLoop]: Abstraction has 25631 states and 29966 transitions. [2018-10-24 16:15:19,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:15:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 29966 transitions. [2018-10-24 16:15:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-24 16:15:19,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:19,802 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 16:15:19,803 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:19,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:19,803 INFO L82 PathProgramCache]: Analyzing trace with hash -262376094, now seen corresponding path program 1 times [2018-10-24 16:15:19,803 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:19,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:19,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:19,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:19,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 16:15:20,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:20,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:15:20,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:15:20,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:15:20,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:20,607 INFO L87 Difference]: Start difference. First operand 25631 states and 29966 transitions. Second operand 4 states. [2018-10-24 16:15:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:34,467 INFO L93 Difference]: Finished difference Result 87356 states and 102501 transitions. [2018-10-24 16:15:34,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:15:34,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2018-10-24 16:15:34,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:34,543 INFO L225 Difference]: With dead ends: 87356 [2018-10-24 16:15:34,543 INFO L226 Difference]: Without dead ends: 59459 [2018-10-24 16:15:34,572 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 16:15:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59459 states. [2018-10-24 16:15:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59459 to 54947. [2018-10-24 16:15:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54947 states. [2018-10-24 16:15:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54947 states to 54947 states and 61557 transitions. [2018-10-24 16:15:35,178 INFO L78 Accepts]: Start accepts. Automaton has 54947 states and 61557 transitions. Word has length 362 [2018-10-24 16:15:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:35,178 INFO L481 AbstractCegarLoop]: Abstraction has 54947 states and 61557 transitions. [2018-10-24 16:15:35,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:15:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 54947 states and 61557 transitions. [2018-10-24 16:15:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-10-24 16:15:35,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:35,199 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:15:35,199 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:35,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1894606626, now seen corresponding path program 1 times [2018-10-24 16:15:35,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:35,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:35,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:35,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:35,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-24 16:15:35,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:35,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:15:35,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:15:35,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:15:35,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:35,630 INFO L87 Difference]: Start difference. First operand 54947 states and 61557 transitions. Second operand 4 states. [2018-10-24 16:15:45,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:45,014 INFO L93 Difference]: Finished difference Result 134708 states and 150803 transitions. [2018-10-24 16:15:45,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:15:45,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-10-24 16:15:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:45,099 INFO L225 Difference]: With dead ends: 134708 [2018-10-24 16:15:45,099 INFO L226 Difference]: Without dead ends: 80515 [2018-10-24 16:15:45,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80515 states. [2018-10-24 16:15:45,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80515 to 79011. [2018-10-24 16:15:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79011 states. [2018-10-24 16:15:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79011 states to 79011 states and 87860 transitions. [2018-10-24 16:15:45,966 INFO L78 Accepts]: Start accepts. Automaton has 79011 states and 87860 transitions. Word has length 466 [2018-10-24 16:15:45,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:45,967 INFO L481 AbstractCegarLoop]: Abstraction has 79011 states and 87860 transitions. [2018-10-24 16:15:45,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:15:45,967 INFO L276 IsEmpty]: Start isEmpty. Operand 79011 states and 87860 transitions. [2018-10-24 16:15:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-24 16:15:45,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:45,989 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:15:45,990 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:45,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1065961236, now seen corresponding path program 1 times [2018-10-24 16:15:45,990 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:45,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:45,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:45,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:45,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:15:46,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:46,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:15:46,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:15:46,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:15:46,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:15:46,507 INFO L87 Difference]: Start difference. First operand 79011 states and 87860 transitions. Second operand 5 states. [2018-10-24 16:15:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:57,023 INFO L93 Difference]: Finished difference Result 231000 states and 256955 transitions. [2018-10-24 16:15:57,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:15:57,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2018-10-24 16:15:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:57,196 INFO L225 Difference]: With dead ends: 231000 [2018-10-24 16:15:57,197 INFO L226 Difference]: Without dead ends: 152743 [2018-10-24 16:15:57,257 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 16:15:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152743 states. [2018-10-24 16:15:59,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152743 to 114391. [2018-10-24 16:15:59,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114391 states. [2018-10-24 16:15:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114391 states to 114391 states and 123457 transitions. [2018-10-24 16:15:59,261 INFO L78 Accepts]: Start accepts. Automaton has 114391 states and 123457 transitions. Word has length 470 [2018-10-24 16:15:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:59,262 INFO L481 AbstractCegarLoop]: Abstraction has 114391 states and 123457 transitions. [2018-10-24 16:15:59,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:15:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 114391 states and 123457 transitions. [2018-10-24 16:15:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2018-10-24 16:15:59,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:59,344 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:15:59,344 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:59,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1428436794, now seen corresponding path program 1 times [2018-10-24 16:15:59,345 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:59,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:59,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:59,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:59,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 16:16:01,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:01,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:16:01,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:16:01,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:16:01,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:01,060 INFO L87 Difference]: Start difference. First operand 114391 states and 123457 transitions. Second operand 4 states. [2018-10-24 16:16:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:08,943 INFO L93 Difference]: Finished difference Result 227276 states and 245332 transitions. [2018-10-24 16:16:08,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:08,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 990 [2018-10-24 16:16:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:09,058 INFO L225 Difference]: With dead ends: 227276 [2018-10-24 16:16:09,058 INFO L226 Difference]: Without dead ends: 92528 [2018-10-24 16:16:09,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 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 16:16:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92528 states. [2018-10-24 16:16:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92528 to 89520. [2018-10-24 16:16:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89520 states. [2018-10-24 16:16:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89520 states to 89520 states and 94426 transitions. [2018-10-24 16:16:09,986 INFO L78 Accepts]: Start accepts. Automaton has 89520 states and 94426 transitions. Word has length 990 [2018-10-24 16:16:09,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:09,988 INFO L481 AbstractCegarLoop]: Abstraction has 89520 states and 94426 transitions. [2018-10-24 16:16:09,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 89520 states and 94426 transitions. [2018-10-24 16:16:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-10-24 16:16:10,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:10,067 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:16:10,067 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:10,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:10,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1686038366, now seen corresponding path program 1 times [2018-10-24 16:16:10,071 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:10,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:10,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:10,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:10,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-24 16:16:11,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:11,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:16:11,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:16:11,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:16:11,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:16:11,500 INFO L87 Difference]: Start difference. First operand 89520 states and 94426 transitions. Second operand 3 states. [2018-10-24 16:16:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:18,365 INFO L93 Difference]: Finished difference Result 221902 states and 234786 transitions. [2018-10-24 16:16:18,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:16:18,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1019 [2018-10-24 16:16:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:18,496 INFO L225 Difference]: With dead ends: 221902 [2018-10-24 16:16:18,497 INFO L226 Difference]: Without dead ends: 132383 [2018-10-24 16:16:18,555 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 16:16:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132383 states. [2018-10-24 16:16:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132383 to 120351. [2018-10-24 16:16:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120351 states. [2018-10-24 16:16:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120351 states to 120351 states and 126128 transitions. [2018-10-24 16:16:20,506 INFO L78 Accepts]: Start accepts. Automaton has 120351 states and 126128 transitions. Word has length 1019 [2018-10-24 16:16:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:20,507 INFO L481 AbstractCegarLoop]: Abstraction has 120351 states and 126128 transitions. [2018-10-24 16:16:20,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:16:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 120351 states and 126128 transitions. [2018-10-24 16:16:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2018-10-24 16:16:20,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:20,574 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:20,574 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:20,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:20,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1518124272, now seen corresponding path program 1 times [2018-10-24 16:16:20,575 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:20,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:20,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:20,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:20,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-24 16:16:22,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:22,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:16:22,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:16:22,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:16:22,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:22,932 INFO L87 Difference]: Start difference. First operand 120351 states and 126128 transitions. Second operand 4 states. [2018-10-24 16:16:30,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:30,597 INFO L93 Difference]: Finished difference Result 268524 states and 280933 transitions. [2018-10-24 16:16:30,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:30,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1027 [2018-10-24 16:16:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:30,756 INFO L225 Difference]: With dead ends: 268524 [2018-10-24 16:16:30,756 INFO L226 Difference]: Without dead ends: 148927 [2018-10-24 16:16:30,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 16:16:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148927 states. [2018-10-24 16:16:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148927 to 137647. [2018-10-24 16:16:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137647 states. [2018-10-24 16:16:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137647 states to 137647 states and 143348 transitions. [2018-10-24 16:16:33,469 INFO L78 Accepts]: Start accepts. Automaton has 137647 states and 143348 transitions. Word has length 1027 [2018-10-24 16:16:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:33,469 INFO L481 AbstractCegarLoop]: Abstraction has 137647 states and 143348 transitions. [2018-10-24 16:16:33,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:33,469 INFO L276 IsEmpty]: Start isEmpty. Operand 137647 states and 143348 transitions. [2018-10-24 16:16:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2018-10-24 16:16:33,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:33,538 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:33,538 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:33,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:33,539 INFO L82 PathProgramCache]: Analyzing trace with hash 503842909, now seen corresponding path program 1 times [2018-10-24 16:16:33,539 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:33,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:33,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:33,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:33,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-24 16:16:37,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:16:37,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:16:37,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:16:37,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:16:37,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:16:37,237 INFO L87 Difference]: Start difference. First operand 137647 states and 143348 transitions. Second operand 4 states. [2018-10-24 16:16:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:16:45,257 INFO L93 Difference]: Finished difference Result 276044 states and 287449 transitions. [2018-10-24 16:16:45,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:16:45,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1073 [2018-10-24 16:16:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:16:45,410 INFO L225 Difference]: With dead ends: 276044 [2018-10-24 16:16:45,410 INFO L226 Difference]: Without dead ends: 139151 [2018-10-24 16:16:45,480 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 16:16:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139151 states. [2018-10-24 16:16:47,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139151 to 135391. [2018-10-24 16:16:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135391 states. [2018-10-24 16:16:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135391 states to 135391 states and 139618 transitions. [2018-10-24 16:16:47,792 INFO L78 Accepts]: Start accepts. Automaton has 135391 states and 139618 transitions. Word has length 1073 [2018-10-24 16:16:47,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:16:47,792 INFO L481 AbstractCegarLoop]: Abstraction has 135391 states and 139618 transitions. [2018-10-24 16:16:47,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:16:47,793 INFO L276 IsEmpty]: Start isEmpty. Operand 135391 states and 139618 transitions. [2018-10-24 16:16:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2018-10-24 16:16:47,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:16:47,864 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:47,865 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:16:47,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:16:47,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1300886854, now seen corresponding path program 1 times [2018-10-24 16:16:47,865 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:16:47,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:16:47,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:47,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:47,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:16:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:49,098 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 16:16:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 619 proven. 30 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-24 16:16:56,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:16:56,223 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 16:16:56,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:16:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:16:56,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:16:56,980 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 16 [2018-10-24 16:16:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 619 proven. 30 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-24 16:16:57,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:16:57,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4] total 13 [2018-10-24 16:16:57,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 16:16:57,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 16:16:57,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:16:57,966 INFO L87 Difference]: Start difference. First operand 135391 states and 139618 transitions. Second operand 13 states. Received shutdown request... [2018-10-24 16:17:36,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 16:17:36,714 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:17:36,720 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:17:36,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:17:36 BoogieIcfgContainer [2018-10-24 16:17:36,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:17:36,721 INFO L168 Benchmark]: Toolchain (without parser) took 225385.22 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 898.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:36,722 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:17:36,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2137.29 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: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:36,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 639.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -991.0 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:36,727 INFO L168 Benchmark]: Boogie Preprocessor took 375.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:36,728 INFO L168 Benchmark]: RCFGBuilder took 8862.76 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 234.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -186.2 MB). Peak memory consumption was 629.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:36,729 INFO L168 Benchmark]: TraceAbstraction took 213365.56 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: -993.3 MB). Peak memory consumption was 792.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:17:36,737 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2137.29 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: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 639.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -991.0 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 375.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8862.76 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 234.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -186.2 MB). Peak memory consumption was 629.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213365.56 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: -993.3 MB). Peak memory consumption was 792.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (135391states) and FLOYD_HOARE automaton (currently 19 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (126332 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 213.2s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 175.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9113 SDtfs, 29434 SDslu, 1389 SDs, 0 SdLazy, 85332 SolverSat, 12957 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 145.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1437 GetRequests, 1366 SyntacticMatches, 18 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137647occurred 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: 12.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 85774 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 8933 NumberOfCodeBlocks, 8933 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8917 ConstructedInterpolants, 32 QuantifiedInterpolants, 32971001 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1623 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 7638/7703 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown