java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:40:11,277 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:40:11,280 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:40:11,299 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:40:11,299 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:40:11,301 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:40:11,302 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:40:11,305 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:40:11,307 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:40:11,309 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:40:11,310 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:40:11,310 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:40:11,313 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:40:11,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:40:11,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:40:11,319 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:40:11,320 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:40:11,325 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:40:11,330 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:40:11,332 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:40:11,333 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:40:11,334 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:40:11,336 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:40:11,336 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:40:11,336 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:40:11,337 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:40:11,338 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:40:11,339 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:40:11,339 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:40:11,340 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:40:11,341 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:40:11,341 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:40:11,344 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 [2018-10-26 19:40:11,367 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:40:11,368 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:40:11,369 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:40:11,370 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:40:11,370 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:40:11,370 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:40:11,371 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:40:11,371 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:40:11,371 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:40:11,371 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:40:11,371 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:40:11,372 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:40:11,373 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:40:11,373 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:40:11,373 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:40:11,373 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:40:11,374 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:40:11,374 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:40:11,374 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:40:11,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:40:11,374 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:40:11,375 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:40:11,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:40:11,376 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:40:11,376 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:40:11,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:40:11,377 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:40:11,377 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:40:11,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:40:11,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:40:11,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:40:11,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:40:11,461 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:40:11,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c [2018-10-26 19:40:11,521 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/026430f77/3f55c0d2cfe847418910a5a59fcd156b/FLAGc4a4c4540 [2018-10-26 19:40:12,222 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:40:12,223 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c [2018-10-26 19:40:12,247 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/026430f77/3f55c0d2cfe847418910a5a59fcd156b/FLAGc4a4c4540 [2018-10-26 19:40:12,264 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/026430f77/3f55c0d2cfe847418910a5a59fcd156b [2018-10-26 19:40:12,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:40:12,279 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:40:12,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:40:12,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:40:12,284 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:40:12,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:40:12" (1/1) ... [2018-10-26 19:40:12,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68109397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:12, skipping insertion in model container [2018-10-26 19:40:12,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:40:12" (1/1) ... [2018-10-26 19:40:12,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:40:12,445 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:40:13,417 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:40:13,422 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:40:13,894 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:40:13,927 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:40:13,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13 WrapperNode [2018-10-26 19:40:13,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:40:13,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:40:13,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:40:13,930 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:40:13,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:13,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:14,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:40:14,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:40:14,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:40:14,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:40:14,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:14,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:14,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:14,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:14,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:14,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:14,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (1/1) ... [2018-10-26 19:40:14,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:40:14,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:40:14,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:40:14,645 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:40:14,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (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 [2018-10-26 19:40:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:40:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:40:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:40:21,611 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:40:21,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:40:21 BoogieIcfgContainer [2018-10-26 19:40:21,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:40:21,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:40:21,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:40:21,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:40:21,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:40:12" (1/3) ... [2018-10-26 19:40:21,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b2125d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:40:21, skipping insertion in model container [2018-10-26 19:40:21,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:40:13" (2/3) ... [2018-10-26 19:40:21,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b2125d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:40:21, skipping insertion in model container [2018-10-26 19:40:21,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:40:21" (3/3) ... [2018-10-26 19:40:21,622 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label06_false-unreach-call.c [2018-10-26 19:40:21,633 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:40:21,643 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:40:21,665 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:40:21,720 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:40:21,721 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:40:21,721 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:40:21,721 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:40:21,721 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:40:21,721 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:40:21,722 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:40:21,722 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:40:21,722 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:40:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-26 19:40:21,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 19:40:21,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:21,768 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] [2018-10-26 19:40:21,771 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:21,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:21,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1580163962, now seen corresponding path program 1 times [2018-10-26 19:40:21,780 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:21,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:21,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:21,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:21,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:22,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:22,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:40:22,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:40:22,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:40:22,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:22,277 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-26 19:40:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:33,196 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-26 19:40:33,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:40:33,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-26 19:40:33,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:33,239 INFO L225 Difference]: With dead ends: 2902 [2018-10-26 19:40:33,239 INFO L226 Difference]: Without dead ends: 2137 [2018-10-26 19:40:33,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:33,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-26 19:40:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-26 19:40:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-26 19:40:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3734 transitions. [2018-10-26 19:40:33,401 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3734 transitions. Word has length 26 [2018-10-26 19:40:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:33,402 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3734 transitions. [2018-10-26 19:40:33,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:40:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3734 transitions. [2018-10-26 19:40:33,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-26 19:40:33,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:33,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:40:33,410 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:33,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:33,413 INFO L82 PathProgramCache]: Analyzing trace with hash -7220096, now seen corresponding path program 1 times [2018-10-26 19:40:33,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:33,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:33,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:33,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:33,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:33,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:33,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:40:33,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:40:33,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:40:33,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:40:33,729 INFO L87 Difference]: Start difference. First operand 2137 states and 3734 transitions. Second operand 4 states. [2018-10-26 19:40:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:45,658 INFO L93 Difference]: Finished difference Result 7730 states and 13074 transitions. [2018-10-26 19:40:45,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:40:45,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2018-10-26 19:40:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:45,686 INFO L225 Difference]: With dead ends: 7730 [2018-10-26 19:40:45,686 INFO L226 Difference]: Without dead ends: 5595 [2018-10-26 19:40:45,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:40:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-10-26 19:40:45,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5595. [2018-10-26 19:40:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5595 states. [2018-10-26 19:40:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 8527 transitions. [2018-10-26 19:40:45,796 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 8527 transitions. Word has length 96 [2018-10-26 19:40:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:45,797 INFO L481 AbstractCegarLoop]: Abstraction has 5595 states and 8527 transitions. [2018-10-26 19:40:45,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:40:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 8527 transitions. [2018-10-26 19:40:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-26 19:40:45,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:45,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:40:45,802 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:45,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash 10279458, now seen corresponding path program 1 times [2018-10-26 19:40:45,803 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:45,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:45,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:45,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:45,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:46,453 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-26 19:40:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:46,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:40:46,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:40:46,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:40:46,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:40:46,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:40:46,772 INFO L87 Difference]: Start difference. First operand 5595 states and 8527 transitions. Second operand 5 states. [2018-10-26 19:40:55,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:40:55,117 INFO L93 Difference]: Finished difference Result 16025 states and 24804 transitions. [2018-10-26 19:40:55,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:40:55,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-26 19:40:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:40:55,157 INFO L225 Difference]: With dead ends: 16025 [2018-10-26 19:40:55,157 INFO L226 Difference]: Without dead ends: 10432 [2018-10-26 19:40:55,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:40:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10432 states. [2018-10-26 19:40:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10432 to 9741. [2018-10-26 19:40:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9741 states. [2018-10-26 19:40:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9741 states to 9741 states and 13118 transitions. [2018-10-26 19:40:55,350 INFO L78 Accepts]: Start accepts. Automaton has 9741 states and 13118 transitions. Word has length 145 [2018-10-26 19:40:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:40:55,351 INFO L481 AbstractCegarLoop]: Abstraction has 9741 states and 13118 transitions. [2018-10-26 19:40:55,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:40:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 9741 states and 13118 transitions. [2018-10-26 19:40:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-26 19:40:55,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:40:55,357 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:40:55,357 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:40:55,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:40:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash 315138893, now seen corresponding path program 1 times [2018-10-26 19:40:55,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:40:55,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:40:55,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:55,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:55,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:40:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 115 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:55,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:40:55,810 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 [2018-10-26 19:40:55,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:40:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:40:55,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:40:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:40:56,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:40:56,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:40:56,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:40:56,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:40:56,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:40:56,077 INFO L87 Difference]: Start difference. First operand 9741 states and 13118 transitions. Second operand 6 states. [2018-10-26 19:41:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:41:08,949 INFO L93 Difference]: Finished difference Result 34002 states and 48836 transitions. [2018-10-26 19:41:08,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:41:08,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 282 [2018-10-26 19:41:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:41:09,015 INFO L225 Difference]: With dead ends: 34002 [2018-10-26 19:41:09,015 INFO L226 Difference]: Without dead ends: 23570 [2018-10-26 19:41:09,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:41:09,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23570 states. [2018-10-26 19:41:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23570 to 17339. [2018-10-26 19:41:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17339 states. [2018-10-26 19:41:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17339 states to 17339 states and 19653 transitions. [2018-10-26 19:41:09,341 INFO L78 Accepts]: Start accepts. Automaton has 17339 states and 19653 transitions. Word has length 282 [2018-10-26 19:41:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:09,342 INFO L481 AbstractCegarLoop]: Abstraction has 17339 states and 19653 transitions. [2018-10-26 19:41:09,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:41:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 17339 states and 19653 transitions. [2018-10-26 19:41:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2018-10-26 19:41:09,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:09,375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:41:09,375 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:09,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:09,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1265390655, now seen corresponding path program 1 times [2018-10-26 19:41:09,376 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:09,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:09,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:09,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:09,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-10-26 19:41:10,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:41:10,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:41:10,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:41:10,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:41:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:10,593 INFO L87 Difference]: Start difference. First operand 17339 states and 19653 transitions. Second operand 4 states. [2018-10-26 19:41:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:41:17,915 INFO L93 Difference]: Finished difference Result 43673 states and 51516 transitions. [2018-10-26 19:41:17,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:41:17,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 915 [2018-10-26 19:41:17,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:41:17,971 INFO L225 Difference]: With dead ends: 43673 [2018-10-26 19:41:17,972 INFO L226 Difference]: Without dead ends: 27027 [2018-10-26 19:41:17,993 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 [2018-10-26 19:41:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27027 states. [2018-10-26 19:41:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27027 to 26336. [2018-10-26 19:41:18,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26336 states. [2018-10-26 19:41:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26336 states to 26336 states and 30312 transitions. [2018-10-26 19:41:18,387 INFO L78 Accepts]: Start accepts. Automaton has 26336 states and 30312 transitions. Word has length 915 [2018-10-26 19:41:18,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:18,388 INFO L481 AbstractCegarLoop]: Abstraction has 26336 states and 30312 transitions. [2018-10-26 19:41:18,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:41:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 26336 states and 30312 transitions. [2018-10-26 19:41:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2018-10-26 19:41:18,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:18,443 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:41:18,443 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:18,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:18,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1742992509, now seen corresponding path program 1 times [2018-10-26 19:41:18,444 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:18,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:18,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:18,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:18,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:19,321 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:41:19,706 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-26 19:41:20,280 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-26 19:41:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 299 proven. 500 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-26 19:41:22,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:41:22,283 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 [2018-10-26 19:41:22,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:22,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:41:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2018-10-26 19:41:23,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:41:23,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2018-10-26 19:41:23,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:41:23,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:41:23,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:41:23,753 INFO L87 Difference]: Start difference. First operand 26336 states and 30312 transitions. Second operand 10 states. [2018-10-26 19:41:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:41:47,468 INFO L93 Difference]: Finished difference Result 187461 states and 225774 transitions. [2018-10-26 19:41:47,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-26 19:41:47,469 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1046 [2018-10-26 19:41:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:41:47,720 INFO L225 Difference]: With dead ends: 187461 [2018-10-26 19:41:47,720 INFO L226 Difference]: Without dead ends: 161818 [2018-10-26 19:41:47,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1067 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2018-10-26 19:41:47,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161818 states. [2018-10-26 19:41:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161818 to 65032. [2018-10-26 19:41:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65032 states. [2018-10-26 19:41:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65032 states to 65032 states and 71486 transitions. [2018-10-26 19:41:49,678 INFO L78 Accepts]: Start accepts. Automaton has 65032 states and 71486 transitions. Word has length 1046 [2018-10-26 19:41:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:49,679 INFO L481 AbstractCegarLoop]: Abstraction has 65032 states and 71486 transitions. [2018-10-26 19:41:49,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 19:41:49,679 INFO L276 IsEmpty]: Start isEmpty. Operand 65032 states and 71486 transitions. [2018-10-26 19:41:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2018-10-26 19:41:49,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:49,696 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:41:49,697 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:49,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:49,697 INFO L82 PathProgramCache]: Analyzing trace with hash -633946417, now seen corresponding path program 1 times [2018-10-26 19:41:49,698 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:49,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:49,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:49,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:49,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2018-10-26 19:41:50,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:41:50,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:41:50,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:41:50,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:41:50,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:50,686 INFO L87 Difference]: Start difference. First operand 65032 states and 71486 transitions. Second operand 4 states. [2018-10-26 19:41:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:41:55,850 INFO L93 Difference]: Finished difference Result 140413 states and 156529 transitions. [2018-10-26 19:41:55,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:41:55,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1067 [2018-10-26 19:41:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:41:56,482 INFO L225 Difference]: With dead ends: 140413 [2018-10-26 19:41:56,483 INFO L226 Difference]: Without dead ends: 76074 [2018-10-26 19:41:56,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76074 states. [2018-10-26 19:41:57,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76074 to 72619. [2018-10-26 19:41:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72619 states. [2018-10-26 19:41:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72619 states to 72619 states and 78010 transitions. [2018-10-26 19:41:57,227 INFO L78 Accepts]: Start accepts. Automaton has 72619 states and 78010 transitions. Word has length 1067 [2018-10-26 19:41:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:41:57,228 INFO L481 AbstractCegarLoop]: Abstraction has 72619 states and 78010 transitions. [2018-10-26 19:41:57,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:41:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 72619 states and 78010 transitions. [2018-10-26 19:41:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2018-10-26 19:41:57,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:41:57,316 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:41:57,316 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:41:57,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:41:57,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1575986019, now seen corresponding path program 1 times [2018-10-26 19:41:57,317 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:41:57,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:41:57,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:57,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:41:57,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:41:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:41:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-26 19:41:59,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:41:59,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:41:59,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:41:59,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:41:59,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:41:59,363 INFO L87 Difference]: Start difference. First operand 72619 states and 78010 transitions. Second operand 4 states. [2018-10-26 19:42:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:05,301 INFO L93 Difference]: Finished difference Result 189460 states and 203780 transitions. [2018-10-26 19:42:05,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:42:05,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1508 [2018-10-26 19:42:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:05,462 INFO L225 Difference]: With dead ends: 189460 [2018-10-26 19:42:05,462 INFO L226 Difference]: Without dead ends: 117534 [2018-10-26 19:42:05,533 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 [2018-10-26 19:42:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117534 states. [2018-10-26 19:42:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117534 to 111315. [2018-10-26 19:42:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111315 states. [2018-10-26 19:42:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111315 states to 111315 states and 118479 transitions. [2018-10-26 19:42:07,134 INFO L78 Accepts]: Start accepts. Automaton has 111315 states and 118479 transitions. Word has length 1508 [2018-10-26 19:42:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:07,135 INFO L481 AbstractCegarLoop]: Abstraction has 111315 states and 118479 transitions. [2018-10-26 19:42:07,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:42:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 111315 states and 118479 transitions. [2018-10-26 19:42:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1561 [2018-10-26 19:42:07,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:07,197 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:42:07,198 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:07,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:07,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1587940758, now seen corresponding path program 1 times [2018-10-26 19:42:07,198 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:07,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:07,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:07,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:07,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1160 proven. 0 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2018-10-26 19:42:09,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:42:09,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:42:09,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:42:09,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:42:09,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:42:09,931 INFO L87 Difference]: Start difference. First operand 111315 states and 118479 transitions. Second operand 4 states. [2018-10-26 19:42:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:15,660 INFO L93 Difference]: Finished difference Result 233684 states and 248891 transitions. [2018-10-26 19:42:15,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:42:15,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1560 [2018-10-26 19:42:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:15,773 INFO L225 Difference]: With dead ends: 233684 [2018-10-26 19:42:15,773 INFO L226 Difference]: Without dead ends: 110601 [2018-10-26 19:42:15,830 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 [2018-10-26 19:42:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110601 states. [2018-10-26 19:42:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110601 to 109910. [2018-10-26 19:42:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109910 states. [2018-10-26 19:42:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109910 states to 109910 states and 114343 transitions. [2018-10-26 19:42:16,795 INFO L78 Accepts]: Start accepts. Automaton has 109910 states and 114343 transitions. Word has length 1560 [2018-10-26 19:42:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:16,796 INFO L481 AbstractCegarLoop]: Abstraction has 109910 states and 114343 transitions. [2018-10-26 19:42:16,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:42:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 109910 states and 114343 transitions. [2018-10-26 19:42:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2018-10-26 19:42:16,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:16,875 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:42:16,875 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:16,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:16,876 INFO L82 PathProgramCache]: Analyzing trace with hash 457997503, now seen corresponding path program 1 times [2018-10-26 19:42:16,876 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:16,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:16,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:16,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:16,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:18,236 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-26 19:42:18,631 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-10-26 19:42:18,951 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-26 19:42:19,249 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 4 [2018-10-26 19:42:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2615 backedges. 1515 proven. 1008 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-26 19:42:24,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:42:24,048 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:42:24,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:24,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:42:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2615 backedges. 1916 proven. 0 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-10-26 19:42:26,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:42:26,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-26 19:42:26,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 19:42:26,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 19:42:26,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-10-26 19:42:26,264 INFO L87 Difference]: Start difference. First operand 109910 states and 114343 transitions. Second operand 12 states. [2018-10-26 19:42:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:44,602 INFO L93 Difference]: Finished difference Result 259926 states and 270554 transitions. [2018-10-26 19:42:44,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-26 19:42:44,603 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1722 [2018-10-26 19:42:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:44,770 INFO L225 Difference]: With dead ends: 259926 [2018-10-26 19:42:44,770 INFO L226 Difference]: Without dead ends: 150709 [2018-10-26 19:42:44,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 1743 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2018-10-26 19:42:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150709 states. [2018-10-26 19:42:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150709 to 103691. [2018-10-26 19:42:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103691 states. [2018-10-26 19:42:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103691 states to 103691 states and 106149 transitions. [2018-10-26 19:42:46,292 INFO L78 Accepts]: Start accepts. Automaton has 103691 states and 106149 transitions. Word has length 1722 [2018-10-26 19:42:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:42:46,293 INFO L481 AbstractCegarLoop]: Abstraction has 103691 states and 106149 transitions. [2018-10-26 19:42:46,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 19:42:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 103691 states and 106149 transitions. [2018-10-26 19:42:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1793 [2018-10-26 19:42:46,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:42:46,363 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:42:46,363 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:42:46,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:42:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash 603042489, now seen corresponding path program 1 times [2018-10-26 19:42:46,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:42:46,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:42:46,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:46,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:46,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:42:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3056 backedges. 2287 proven. 70 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-10-26 19:42:49,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:42:49,038 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:42:49,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:42:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:42:49,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:42:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3056 backedges. 2287 proven. 70 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-10-26 19:42:51,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:42:51,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-26 19:42:51,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:42:51,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:42:51,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:42:51,103 INFO L87 Difference]: Start difference. First operand 103691 states and 106149 transitions. Second operand 4 states. [2018-10-26 19:42:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:42:59,825 INFO L93 Difference]: Finished difference Result 220508 states and 225864 transitions. [2018-10-26 19:42:59,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:42:59,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1792 [2018-10-26 19:42:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:42:59,944 INFO L225 Difference]: With dead ends: 220508 [2018-10-26 19:42:59,944 INFO L226 Difference]: Without dead ends: 117510 [2018-10-26 19:43:00,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1796 GetRequests, 1792 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117510 states. [2018-10-26 19:43:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117510 to 109218. [2018-10-26 19:43:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109218 states. [2018-10-26 19:43:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109218 states to 109218 states and 111760 transitions. [2018-10-26 19:43:01,426 INFO L78 Accepts]: Start accepts. Automaton has 109218 states and 111760 transitions. Word has length 1792 [2018-10-26 19:43:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:01,427 INFO L481 AbstractCegarLoop]: Abstraction has 109218 states and 111760 transitions. [2018-10-26 19:43:01,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 109218 states and 111760 transitions. [2018-10-26 19:43:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1884 [2018-10-26 19:43:01,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:01,503 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:43:01,504 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:01,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:01,504 INFO L82 PathProgramCache]: Analyzing trace with hash -491800528, now seen corresponding path program 1 times [2018-10-26 19:43:01,505 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:01,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:01,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:01,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:01,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:02,422 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:43:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 2118 proven. 0 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2018-10-26 19:43:03,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:03,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:43:03,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:43:03,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:43:03,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:03,967 INFO L87 Difference]: Start difference. First operand 109218 states and 111760 transitions. Second operand 4 states. [2018-10-26 19:43:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:09,404 INFO L93 Difference]: Finished difference Result 226721 states and 232101 transitions. [2018-10-26 19:43:09,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:43:09,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1883 [2018-10-26 19:43:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:09,544 INFO L225 Difference]: With dead ends: 226721 [2018-10-26 19:43:09,544 INFO L226 Difference]: Without dead ends: 118196 [2018-10-26 19:43:09,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118196 states. [2018-10-26 19:43:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118196 to 114050. [2018-10-26 19:43:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114050 states. [2018-10-26 19:43:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114050 states to 114050 states and 116141 transitions. [2018-10-26 19:43:11,006 INFO L78 Accepts]: Start accepts. Automaton has 114050 states and 116141 transitions. Word has length 1883 [2018-10-26 19:43:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:11,007 INFO L481 AbstractCegarLoop]: Abstraction has 114050 states and 116141 transitions. [2018-10-26 19:43:11,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 114050 states and 116141 transitions. [2018-10-26 19:43:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2006 [2018-10-26 19:43:11,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:11,077 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:43:11,077 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:11,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:11,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1803355823, now seen corresponding path program 1 times [2018-10-26 19:43:11,078 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:11,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:11,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:11,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:11,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3874 backedges. 2455 proven. 0 refuted. 0 times theorem prover too weak. 1419 trivial. 0 not checked. [2018-10-26 19:43:13,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:13,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:43:13,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:43:13,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:43:13,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:13,930 INFO L87 Difference]: Start difference. First operand 114050 states and 116141 transitions. Second operand 4 states. [2018-10-26 19:43:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:19,491 INFO L93 Difference]: Finished difference Result 232932 states and 237209 transitions. [2018-10-26 19:43:19,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:43:19,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2005 [2018-10-26 19:43:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:19,640 INFO L225 Difference]: With dead ends: 232932 [2018-10-26 19:43:19,640 INFO L226 Difference]: Without dead ends: 119575 [2018-10-26 19:43:19,684 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 [2018-10-26 19:43:19,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119575 states. [2018-10-26 19:43:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119575 to 110592. [2018-10-26 19:43:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110592 states. [2018-10-26 19:43:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110592 states to 110592 states and 112471 transitions. [2018-10-26 19:43:20,784 INFO L78 Accepts]: Start accepts. Automaton has 110592 states and 112471 transitions. Word has length 2005 [2018-10-26 19:43:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:20,785 INFO L481 AbstractCegarLoop]: Abstraction has 110592 states and 112471 transitions. [2018-10-26 19:43:20,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 110592 states and 112471 transitions. [2018-10-26 19:43:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2124 [2018-10-26 19:43:20,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:20,859 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:43:20,859 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:20,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1319634156, now seen corresponding path program 1 times [2018-10-26 19:43:20,860 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:20,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:20,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:20,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:20,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4011 backedges. 3146 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2018-10-26 19:43:26,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:26,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:43:26,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:43:26,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:43:26,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:26,630 INFO L87 Difference]: Start difference. First operand 110592 states and 112471 transitions. Second operand 4 states. [2018-10-26 19:43:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:31,734 INFO L93 Difference]: Finished difference Result 243293 states and 247474 transitions. [2018-10-26 19:43:31,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:43:31,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2123 [2018-10-26 19:43:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:31,896 INFO L225 Difference]: With dead ends: 243293 [2018-10-26 19:43:31,896 INFO L226 Difference]: Without dead ends: 133394 [2018-10-26 19:43:31,980 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 [2018-10-26 19:43:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133394 states. [2018-10-26 19:43:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133394 to 127864. [2018-10-26 19:43:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127864 states. [2018-10-26 19:43:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127864 states to 127864 states and 129776 transitions. [2018-10-26 19:43:33,811 INFO L78 Accepts]: Start accepts. Automaton has 127864 states and 129776 transitions. Word has length 2123 [2018-10-26 19:43:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:33,812 INFO L481 AbstractCegarLoop]: Abstraction has 127864 states and 129776 transitions. [2018-10-26 19:43:33,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 127864 states and 129776 transitions. [2018-10-26 19:43:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2174 [2018-10-26 19:43:33,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:33,897 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:43:33,897 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:33,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:33,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1779036097, now seen corresponding path program 1 times [2018-10-26 19:43:33,899 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:33,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:33,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:33,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:33,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4227 backedges. 2540 proven. 174 refuted. 0 times theorem prover too weak. 1513 trivial. 0 not checked. [2018-10-26 19:43:37,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:43:37,378 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:43:37,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:37,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:43:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4227 backedges. 2540 proven. 174 refuted. 0 times theorem prover too weak. 1513 trivial. 0 not checked. [2018-10-26 19:43:40,692 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:43:40,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-26 19:43:40,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:43:40,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:43:40,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:40,695 INFO L87 Difference]: Start difference. First operand 127864 states and 129776 transitions. Second operand 4 states. [2018-10-26 19:43:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:46,050 INFO L93 Difference]: Finished difference Result 257108 states and 260965 transitions. [2018-10-26 19:43:46,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:43:46,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2173 [2018-10-26 19:43:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:46,187 INFO L225 Difference]: With dead ends: 257108 [2018-10-26 19:43:46,187 INFO L226 Difference]: Without dead ends: 129937 [2018-10-26 19:43:46,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2177 GetRequests, 2173 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:43:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129937 states. [2018-10-26 19:43:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129937 to 120263. [2018-10-26 19:43:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120263 states. [2018-10-26 19:43:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120263 states to 120263 states and 121949 transitions. [2018-10-26 19:43:47,819 INFO L78 Accepts]: Start accepts. Automaton has 120263 states and 121949 transitions. Word has length 2173 [2018-10-26 19:43:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:47,820 INFO L481 AbstractCegarLoop]: Abstraction has 120263 states and 121949 transitions. [2018-10-26 19:43:47,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 120263 states and 121949 transitions. [2018-10-26 19:43:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2285 [2018-10-26 19:43:47,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:47,900 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:43:47,900 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:47,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:47,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1433622822, now seen corresponding path program 1 times [2018-10-26 19:43:47,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:47,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:47,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:47,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:47,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:49,560 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-26 19:43:49,773 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 3 [2018-10-26 19:43:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4947 backedges. 3143 proven. 0 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2018-10-26 19:43:53,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:53,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:43:53,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:43:53,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:43:53,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:43:53,422 INFO L87 Difference]: Start difference. First operand 120263 states and 121949 transitions. Second operand 5 states. Received shutdown request... [2018-10-26 19:43:57,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:43:57,220 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:43:57,226 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:43:57,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:43:57 BoogieIcfgContainer [2018-10-26 19:43:57,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:43:57,228 INFO L168 Benchmark]: Toolchain (without parser) took 224951.03 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.4 GB). Peak memory consumption was 745.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:57,229 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-26 19:43:57,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1648.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:57,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 519.79 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -985.2 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:57,231 INFO L168 Benchmark]: Boogie Preprocessor took 194.82 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:57,232 INFO L168 Benchmark]: RCFGBuilder took 6968.03 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 520.8 MB). Peak memory consumption was 520.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:57,233 INFO L168 Benchmark]: TraceAbstraction took 215613.44 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.1 GB). Peak memory consumption was 211.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:43:57,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1648.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 519.79 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -985.2 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.82 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6968.03 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 520.8 MB). Peak memory consumption was 520.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215613.44 ms. Allocated memory was 2.4 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.1 GB). Peak memory consumption was 211.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 84). Cancelled while BasicCegarLoop was constructing difference of abstraction (120263states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (12668 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 215.5s OverallTime, 16 OverallIterations, 8 TraceHistogramMax, 147.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8097 SDtfs, 53602 SDslu, 2066 SDs, 0 SdLazy, 87670 SolverSat, 17324 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 112.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7190 GetRequests, 7076 SyntacticMatches, 13 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127864occurred in iteration=14, 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: 15.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 198407 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 22.4s InterpolantComputationTime, 27642 NumberOfCodeBlocks, 27642 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 27621 ConstructedInterpolants, 0 QuantifiedInterpolants, 92481157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 7956 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 41277/43277 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown