java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem16_label18_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:23:20,276 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:23:20,278 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:23:20,295 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:23:20,296 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:23:20,297 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:23:20,298 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:23:20,301 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:23:20,305 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:23:20,305 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:23:20,307 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:23:20,309 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:23:20,310 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:23:20,312 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:23:20,320 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:23:20,321 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:23:20,321 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:23:20,326 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:23:20,330 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:23:20,334 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:23:20,336 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:23:20,337 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:23:20,340 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:23:20,340 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:23:20,340 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:23:20,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:23:20,342 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:23:20,348 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:23:20,349 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:23:20,350 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:23:20,350 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:23:20,353 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:23:20,355 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:23:20,382 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:23:20,382 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:23:20,383 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:23:20,383 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:23:20,384 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:23:20,384 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:23:20,384 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:23:20,384 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:23:20,385 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:23:20,385 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:23:20,385 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:23:20,385 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:23:20,385 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:23:20,386 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:23:20,386 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:23:20,386 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:23:20,386 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:23:20,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:23:20,387 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:23:20,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:23:20,387 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:23:20,387 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:23:20,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:23:20,388 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:23:20,388 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:23:20,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:23:20,388 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:23:20,388 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:23:20,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:23:20,445 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:23:20,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:23:20,450 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:23:20,450 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:23:20,451 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-11-06 19:23:20,512 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b87bce91/fb9cf5548e8f4c7c8327c589c8f1fd5c/FLAG2ea7e58fb [2018-11-06 19:23:21,177 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:23:21,178 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-11-06 19:23:21,196 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b87bce91/fb9cf5548e8f4c7c8327c589c8f1fd5c/FLAG2ea7e58fb [2018-11-06 19:23:21,215 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b87bce91/fb9cf5548e8f4c7c8327c589c8f1fd5c [2018-11-06 19:23:21,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:23:21,229 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:23:21,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:23:21,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:23:21,235 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:23:21,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:23:21" (1/1) ... [2018-11-06 19:23:21,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40bfec60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:21, skipping insertion in model container [2018-11-06 19:23:21,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:23:21" (1/1) ... [2018-11-06 19:23:21,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:23:21,342 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:23:22,139 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:23:22,144 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:23:22,377 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:23:22,398 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:23:22,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22 WrapperNode [2018-11-06 19:23:22,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:23:22,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:23:22,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:23:22,400 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:23:22,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:23:22,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:23:22,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:23:22,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:23:22,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... [2018-11-06 19:23:22,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:23:22,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:23:22,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:23:22,912 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:23:22,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:23:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:23:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:23:22,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:23:29,354 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:23:29,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:23:29 BoogieIcfgContainer [2018-11-06 19:23:29,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:23:29,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:23:29,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:23:29,360 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:23:29,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:23:21" (1/3) ... [2018-11-06 19:23:29,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9222aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:23:29, skipping insertion in model container [2018-11-06 19:23:29,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:23:22" (2/3) ... [2018-11-06 19:23:29,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9222aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:23:29, skipping insertion in model container [2018-11-06 19:23:29,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:23:29" (3/3) ... [2018-11-06 19:23:29,365 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label18_false-unreach-call.c [2018-11-06 19:23:29,376 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:23:29,385 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:23:29,403 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:23:29,442 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:23:29,443 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:23:29,443 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:23:29,444 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:23:29,444 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:23:29,444 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:23:29,444 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:23:29,444 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:23:29,444 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:23:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2018-11-06 19:23:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-06 19:23:29,480 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:23:29,481 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:23:29,483 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:23:29,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:23:29,490 INFO L82 PathProgramCache]: Analyzing trace with hash 150940466, now seen corresponding path program 1 times [2018-11-06 19:23:29,492 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:23:29,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:23:29,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:29,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:23:29,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:23:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:23:29,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:23:29,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 19:23:29,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:23:29,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:23:29,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:23:29,681 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 3 states. [2018-11-06 19:23:33,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:23:33,176 INFO L93 Difference]: Finished difference Result 1125 states and 2106 transitions. [2018-11-06 19:23:33,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:23:33,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-06 19:23:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:23:33,204 INFO L225 Difference]: With dead ends: 1125 [2018-11-06 19:23:33,204 INFO L226 Difference]: Without dead ends: 724 [2018-11-06 19:23:33,210 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:23:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2018-11-06 19:23:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2018-11-06 19:23:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-11-06 19:23:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1139 transitions. [2018-11-06 19:23:33,296 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1139 transitions. Word has length 8 [2018-11-06 19:23:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:23:33,297 INFO L480 AbstractCegarLoop]: Abstraction has 724 states and 1139 transitions. [2018-11-06 19:23:33,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:23:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1139 transitions. [2018-11-06 19:23:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-06 19:23:33,300 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:23:33,300 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:23:33,300 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:23:33,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:23:33,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1548975917, now seen corresponding path program 1 times [2018-11-06 19:23:33,301 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:23:33,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:23:33,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:33,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:23:33,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:23:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:23:33,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:23:33,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:23:33,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:23:33,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:23:33,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:23:33,549 INFO L87 Difference]: Start difference. First operand 724 states and 1139 transitions. Second operand 5 states. [2018-11-06 19:23:39,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:23:39,209 INFO L93 Difference]: Finished difference Result 2106 states and 3352 transitions. [2018-11-06 19:23:39,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:23:39,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2018-11-06 19:23:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:23:39,217 INFO L225 Difference]: With dead ends: 2106 [2018-11-06 19:23:39,218 INFO L226 Difference]: Without dead ends: 1384 [2018-11-06 19:23:39,221 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:23:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2018-11-06 19:23:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2018-11-06 19:23:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2018-11-06 19:23:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2023 transitions. [2018-11-06 19:23:39,273 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2023 transitions. Word has length 77 [2018-11-06 19:23:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:23:39,273 INFO L480 AbstractCegarLoop]: Abstraction has 1384 states and 2023 transitions. [2018-11-06 19:23:39,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:23:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2023 transitions. [2018-11-06 19:23:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-06 19:23:39,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:23:39,282 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:23:39,283 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:23:39,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:23:39,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1640363545, now seen corresponding path program 1 times [2018-11-06 19:23:39,283 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:23:39,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:23:39,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:39,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:23:39,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:23:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:23:39,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:23:39,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:23:39,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:23:39,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:23:39,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:23:39,452 INFO L87 Difference]: Start difference. First operand 1384 states and 2023 transitions. Second operand 3 states. [2018-11-06 19:23:41,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:23:41,975 INFO L93 Difference]: Finished difference Result 3426 states and 5210 transitions. [2018-11-06 19:23:41,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:23:41,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2018-11-06 19:23:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:23:41,988 INFO L225 Difference]: With dead ends: 3426 [2018-11-06 19:23:41,989 INFO L226 Difference]: Without dead ends: 2044 [2018-11-06 19:23:41,991 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:23:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2018-11-06 19:23:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2044. [2018-11-06 19:23:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2018-11-06 19:23:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 3021 transitions. [2018-11-06 19:23:42,032 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 3021 transitions. Word has length 105 [2018-11-06 19:23:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:23:42,033 INFO L480 AbstractCegarLoop]: Abstraction has 2044 states and 3021 transitions. [2018-11-06 19:23:42,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:23:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 3021 transitions. [2018-11-06 19:23:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-06 19:23:42,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:23:42,039 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:23:42,039 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:23:42,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:23:42,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1278773011, now seen corresponding path program 1 times [2018-11-06 19:23:42,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:23:42,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:23:42,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:42,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:23:42,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:23:42,460 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-06 19:23:42,882 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2018-11-06 19:23:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:23:43,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:23:43,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:23:43,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:23:43,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:23:43,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:23:43,097 INFO L87 Difference]: Start difference. First operand 2044 states and 3021 transitions. Second operand 7 states. [2018-11-06 19:23:49,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:23:49,829 INFO L93 Difference]: Finished difference Result 4443 states and 6440 transitions. [2018-11-06 19:23:49,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:23:49,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2018-11-06 19:23:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:23:49,844 INFO L225 Difference]: With dead ends: 4443 [2018-11-06 19:23:49,844 INFO L226 Difference]: Without dead ends: 2401 [2018-11-06 19:23:49,848 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:23:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2018-11-06 19:23:49,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2374. [2018-11-06 19:23:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2018-11-06 19:23:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3357 transitions. [2018-11-06 19:23:49,893 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3357 transitions. Word has length 140 [2018-11-06 19:23:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:23:49,894 INFO L480 AbstractCegarLoop]: Abstraction has 2374 states and 3357 transitions. [2018-11-06 19:23:49,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:23:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3357 transitions. [2018-11-06 19:23:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-06 19:23:49,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:23:49,900 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:23:49,900 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:23:49,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:23:49,901 INFO L82 PathProgramCache]: Analyzing trace with hash -809539550, now seen corresponding path program 1 times [2018-11-06 19:23:49,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:23:49,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:23:49,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:49,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:23:49,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:23:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:23:50,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:23:50,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:23:50,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:23:50,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:23:50,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:23:50,182 INFO L87 Difference]: Start difference. First operand 2374 states and 3357 transitions. Second operand 3 states. [2018-11-06 19:23:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:23:53,278 INFO L93 Difference]: Finished difference Result 6396 states and 9334 transitions. [2018-11-06 19:23:53,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:23:53,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2018-11-06 19:23:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:23:53,297 INFO L225 Difference]: With dead ends: 6396 [2018-11-06 19:23:53,298 INFO L226 Difference]: Without dead ends: 3682 [2018-11-06 19:23:53,303 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:23:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2018-11-06 19:23:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 3682. [2018-11-06 19:23:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-06 19:23:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 4179 transitions. [2018-11-06 19:23:53,366 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 4179 transitions. Word has length 228 [2018-11-06 19:23:53,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:23:53,367 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 4179 transitions. [2018-11-06 19:23:53,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:23:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 4179 transitions. [2018-11-06 19:23:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-11-06 19:23:53,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:23:53,372 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:23:53,372 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:23:53,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:23:53,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2123129909, now seen corresponding path program 1 times [2018-11-06 19:23:53,373 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:23:53,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:23:53,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:53,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:23:53,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:23:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:23:53,820 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:23:54,193 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-11-06 19:23:54,629 WARN L179 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-11-06 19:23:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 11 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:23:55,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:23:55,262 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:23:55,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:23:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:23:55,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:23:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-11-06 19:23:55,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:23:55,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2018-11-06 19:23:55,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:23:55,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:23:55,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:23:55,698 INFO L87 Difference]: Start difference. First operand 3682 states and 4179 transitions. Second operand 10 states. [2018-11-06 19:24:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:24:03,298 INFO L93 Difference]: Finished difference Result 9358 states and 10578 transitions. [2018-11-06 19:24:03,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 19:24:03,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 310 [2018-11-06 19:24:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:24:03,326 INFO L225 Difference]: With dead ends: 9358 [2018-11-06 19:24:03,326 INFO L226 Difference]: Without dead ends: 6008 [2018-11-06 19:24:03,332 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2018-11-06 19:24:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6008 states. [2018-11-06 19:24:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6008 to 5332. [2018-11-06 19:24:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5332 states. [2018-11-06 19:24:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 5915 transitions. [2018-11-06 19:24:03,439 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 5915 transitions. Word has length 310 [2018-11-06 19:24:03,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:24:03,440 INFO L480 AbstractCegarLoop]: Abstraction has 5332 states and 5915 transitions. [2018-11-06 19:24:03,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:24:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 5915 transitions. [2018-11-06 19:24:03,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-11-06 19:24:03,449 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:24:03,450 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:24:03,450 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:24:03,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:24:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1426683343, now seen corresponding path program 1 times [2018-11-06 19:24:03,451 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:24:03,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:24:03,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:03,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:03,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:03,946 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:24:04,358 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-11-06 19:24:04,935 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2018-11-06 19:24:05,109 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 4 [2018-11-06 19:24:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-06 19:24:05,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:24:05,277 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:24:05,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:05,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:24:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 139 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-06 19:24:06,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:24:06,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-11-06 19:24:06,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:24:06,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:24:06,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:24:06,331 INFO L87 Difference]: Start difference. First operand 5332 states and 5915 transitions. Second operand 8 states. [2018-11-06 19:24:06,519 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 19:24:09,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:24:09,972 INFO L93 Difference]: Finished difference Result 11322 states and 12526 transitions. [2018-11-06 19:24:09,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:24:09,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 403 [2018-11-06 19:24:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:24:09,999 INFO L225 Difference]: With dead ends: 11322 [2018-11-06 19:24:10,000 INFO L226 Difference]: Without dead ends: 6322 [2018-11-06 19:24:10,007 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:24:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6322 states. [2018-11-06 19:24:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6322 to 5992. [2018-11-06 19:24:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5992 states. [2018-11-06 19:24:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5992 states to 5992 states and 6548 transitions. [2018-11-06 19:24:10,100 INFO L78 Accepts]: Start accepts. Automaton has 5992 states and 6548 transitions. Word has length 403 [2018-11-06 19:24:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:24:10,101 INFO L480 AbstractCegarLoop]: Abstraction has 5992 states and 6548 transitions. [2018-11-06 19:24:10,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:24:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5992 states and 6548 transitions. [2018-11-06 19:24:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2018-11-06 19:24:10,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:24:10,126 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:24:10,127 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:24:10,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:24:10,127 INFO L82 PathProgramCache]: Analyzing trace with hash 613011524, now seen corresponding path program 1 times [2018-11-06 19:24:10,127 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:24:10,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:24:10,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:10,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:10,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:10,933 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:24:11,258 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-11-06 19:24:11,839 WARN L179 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2018-11-06 19:24:12,438 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2018-11-06 19:24:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 812 proven. 65 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-11-06 19:24:13,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:24:13,875 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:24:13,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:14,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:24:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 767 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2018-11-06 19:24:14,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:24:14,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-11-06 19:24:14,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:24:14,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:24:14,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:24:14,582 INFO L87 Difference]: Start difference. First operand 5992 states and 6548 transitions. Second operand 9 states. [2018-11-06 19:24:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:24:21,112 INFO L93 Difference]: Finished difference Result 18264 states and 20085 transitions. [2018-11-06 19:24:21,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 19:24:21,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 807 [2018-11-06 19:24:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:24:21,150 INFO L225 Difference]: With dead ends: 18264 [2018-11-06 19:24:21,151 INFO L226 Difference]: Without dead ends: 10948 [2018-11-06 19:24:21,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 812 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2018-11-06 19:24:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10948 states. [2018-11-06 19:24:21,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10948 to 9616. [2018-11-06 19:24:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9616 states. [2018-11-06 19:24:21,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 10537 transitions. [2018-11-06 19:24:21,306 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 10537 transitions. Word has length 807 [2018-11-06 19:24:21,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:24:21,308 INFO L480 AbstractCegarLoop]: Abstraction has 9616 states and 10537 transitions. [2018-11-06 19:24:21,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:24:21,308 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 10537 transitions. [2018-11-06 19:24:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2018-11-06 19:24:21,326 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:24:21,327 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:24:21,327 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:24:21,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:24:21,328 INFO L82 PathProgramCache]: Analyzing trace with hash -295618710, now seen corresponding path program 1 times [2018-11-06 19:24:21,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:24:21,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:24:21,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:21,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:21,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:22,037 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-06 19:24:22,295 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-11-06 19:24:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 617 proven. 283 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2018-11-06 19:24:23,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:24:23,074 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:24:23,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:23,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:24:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 691 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2018-11-06 19:24:24,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:24:24,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-11-06 19:24:24,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:24:24,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:24:24,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:24:24,136 INFO L87 Difference]: Start difference. First operand 9616 states and 10537 transitions. Second operand 9 states. [2018-11-06 19:24:27,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:24:27,460 INFO L93 Difference]: Finished difference Result 19000 states and 20840 transitions. [2018-11-06 19:24:27,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:24:27,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 924 [2018-11-06 19:24:27,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:24:27,482 INFO L225 Difference]: With dead ends: 19000 [2018-11-06 19:24:27,482 INFO L226 Difference]: Without dead ends: 9716 [2018-11-06 19:24:27,495 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 925 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:24:27,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9716 states. [2018-11-06 19:24:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9716 to 9616. [2018-11-06 19:24:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9616 states. [2018-11-06 19:24:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 10354 transitions. [2018-11-06 19:24:27,631 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 10354 transitions. Word has length 924 [2018-11-06 19:24:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:24:27,633 INFO L480 AbstractCegarLoop]: Abstraction has 9616 states and 10354 transitions. [2018-11-06 19:24:27,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:24:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 10354 transitions. [2018-11-06 19:24:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2018-11-06 19:24:27,658 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:24:27,659 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:24:27,659 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:24:27,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:24:27,660 INFO L82 PathProgramCache]: Analyzing trace with hash 539134463, now seen corresponding path program 1 times [2018-11-06 19:24:27,660 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:24:27,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:24:27,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:27,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:27,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:28,517 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-11-06 19:24:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 1651 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-11-06 19:24:29,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:24:29,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:24:29,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:24:29,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:24:29,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:24:29,483 INFO L87 Difference]: Start difference. First operand 9616 states and 10354 transitions. Second operand 5 states. [2018-11-06 19:24:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:24:32,579 INFO L93 Difference]: Finished difference Result 22860 states and 24589 transitions. [2018-11-06 19:24:32,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:24:32,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1161 [2018-11-06 19:24:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:24:32,602 INFO L225 Difference]: With dead ends: 22860 [2018-11-06 19:24:32,602 INFO L226 Difference]: Without dead ends: 13576 [2018-11-06 19:24:32,614 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:24:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13576 states. [2018-11-06 19:24:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13576 to 13576. [2018-11-06 19:24:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13576 states. [2018-11-06 19:24:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13576 states to 13576 states and 14429 transitions. [2018-11-06 19:24:32,778 INFO L78 Accepts]: Start accepts. Automaton has 13576 states and 14429 transitions. Word has length 1161 [2018-11-06 19:24:32,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:24:32,780 INFO L480 AbstractCegarLoop]: Abstraction has 13576 states and 14429 transitions. [2018-11-06 19:24:32,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:24:32,780 INFO L276 IsEmpty]: Start isEmpty. Operand 13576 states and 14429 transitions. [2018-11-06 19:24:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1313 [2018-11-06 19:24:32,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:24:32,812 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:24:32,812 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:24:32,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:24:32,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1790046530, now seen corresponding path program 1 times [2018-11-06 19:24:32,813 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:24:32,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:24:32,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:32,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:32,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 1589 proven. 0 refuted. 0 times theorem prover too weak. 1834 trivial. 0 not checked. [2018-11-06 19:24:34,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:24:34,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:24:34,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:24:34,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:24:34,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:24:34,479 INFO L87 Difference]: Start difference. First operand 13576 states and 14429 transitions. Second operand 4 states. [2018-11-06 19:24:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:24:36,539 INFO L93 Difference]: Finished difference Result 29456 states and 31348 transitions. [2018-11-06 19:24:36,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:24:36,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1312 [2018-11-06 19:24:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:24:36,561 INFO L225 Difference]: With dead ends: 29456 [2018-11-06 19:24:36,561 INFO L226 Difference]: Without dead ends: 13222 [2018-11-06 19:24:36,582 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:24:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13222 states. [2018-11-06 19:24:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13222 to 12232. [2018-11-06 19:24:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12232 states. [2018-11-06 19:24:36,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 12708 transitions. [2018-11-06 19:24:36,729 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 12708 transitions. Word has length 1312 [2018-11-06 19:24:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:24:36,730 INFO L480 AbstractCegarLoop]: Abstraction has 12232 states and 12708 transitions. [2018-11-06 19:24:36,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:24:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 12708 transitions. [2018-11-06 19:24:36,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2018-11-06 19:24:36,758 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:24:36,759 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:24:36,759 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:24:36,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:24:36,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1283964147, now seen corresponding path program 1 times [2018-11-06 19:24:36,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:24:36,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:24:36,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:36,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:36,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:37,669 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:24:37,833 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-11-06 19:24:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3665 backedges. 1783 proven. 243 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2018-11-06 19:24:40,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:24:40,508 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:24:40,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:40,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:24:42,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3665 backedges. 1783 proven. 0 refuted. 0 times theorem prover too weak. 1882 trivial. 0 not checked. [2018-11-06 19:24:42,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:24:42,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2018-11-06 19:24:42,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:24:42,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:24:42,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:24:42,576 INFO L87 Difference]: Start difference. First operand 12232 states and 12708 transitions. Second operand 10 states. [2018-11-06 19:24:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:24:49,287 INFO L93 Difference]: Finished difference Result 26448 states and 27444 transitions. [2018-11-06 19:24:49,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:24:49,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1389 [2018-11-06 19:24:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:24:49,310 INFO L225 Difference]: With dead ends: 26448 [2018-11-06 19:24:49,310 INFO L226 Difference]: Without dead ends: 14548 [2018-11-06 19:24:49,323 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1405 GetRequests, 1388 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-11-06 19:24:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14548 states. [2018-11-06 19:24:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14548 to 12562. [2018-11-06 19:24:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12562 states. [2018-11-06 19:24:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12562 states to 12562 states and 13043 transitions. [2018-11-06 19:24:49,477 INFO L78 Accepts]: Start accepts. Automaton has 12562 states and 13043 transitions. Word has length 1389 [2018-11-06 19:24:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:24:49,477 INFO L480 AbstractCegarLoop]: Abstraction has 12562 states and 13043 transitions. [2018-11-06 19:24:49,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:24:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 12562 states and 13043 transitions. [2018-11-06 19:24:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1421 [2018-11-06 19:24:49,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:24:49,506 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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] [2018-11-06 19:24:49,507 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:24:49,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:24:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash 37098125, now seen corresponding path program 1 times [2018-11-06 19:24:49,508 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:24:49,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:24:49,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:49,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:49,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:24:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4353 backedges. 1886 proven. 158 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2018-11-06 19:24:52,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:24:52,093 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:24:52,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:24:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:24:52,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:24:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4353 backedges. 2044 proven. 0 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2018-11-06 19:24:53,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:24:53,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-11-06 19:24:53,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:24:53,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:24:53,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:24:53,776 INFO L87 Difference]: Start difference. First operand 12562 states and 13043 transitions. Second operand 10 states. [2018-11-06 19:25:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:25:02,709 INFO L93 Difference]: Finished difference Result 39119 states and 40742 transitions. [2018-11-06 19:25:02,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-06 19:25:02,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1420 [2018-11-06 19:25:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:25:02,740 INFO L225 Difference]: With dead ends: 39119 [2018-11-06 19:25:02,740 INFO L226 Difference]: Without dead ends: 26281 [2018-11-06 19:25:02,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1450 GetRequests, 1430 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2018-11-06 19:25:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26281 states. [2018-11-06 19:25:03,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26281 to 20603. [2018-11-06 19:25:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20603 states. [2018-11-06 19:25:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20603 states to 20603 states and 21343 transitions. [2018-11-06 19:25:03,065 INFO L78 Accepts]: Start accepts. Automaton has 20603 states and 21343 transitions. Word has length 1420 [2018-11-06 19:25:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:25:03,066 INFO L480 AbstractCegarLoop]: Abstraction has 20603 states and 21343 transitions. [2018-11-06 19:25:03,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:25:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 20603 states and 21343 transitions. [2018-11-06 19:25:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1671 [2018-11-06 19:25:03,109 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:25:03,110 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:25:03,110 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:25:03,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:25:03,111 INFO L82 PathProgramCache]: Analyzing trace with hash 812329880, now seen corresponding path program 1 times [2018-11-06 19:25:03,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:25:03,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:25:03,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:25:03,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:25:03,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:25:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:25:04,461 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:25:04,829 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-11-06 19:25:05,356 WARN L179 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 16 [2018-11-06 19:25:05,585 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2018-11-06 19:25:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 1556 proven. 3206 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2018-11-06 19:25:09,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:25:09,521 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:25:09,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:25:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:25:09,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:25:10,836 WARN L179 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 15 [2018-11-06 19:25:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 3609 proven. 148 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2018-11-06 19:25:12,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:25:12,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2018-11-06 19:25:12,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-06 19:25:12,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-06 19:25:12,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-11-06 19:25:12,728 INFO L87 Difference]: Start difference. First operand 20603 states and 21343 transitions. Second operand 14 states. [2018-11-06 19:25:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:25:23,302 INFO L93 Difference]: Finished difference Result 42224 states and 43766 transitions. [2018-11-06 19:25:23,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-06 19:25:23,302 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1670 [2018-11-06 19:25:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:25:23,324 INFO L225 Difference]: With dead ends: 42224 [2018-11-06 19:25:23,324 INFO L226 Difference]: Without dead ends: 21953 [2018-11-06 19:25:23,338 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1706 GetRequests, 1679 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-11-06 19:25:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21953 states. [2018-11-06 19:25:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21953 to 21261. [2018-11-06 19:25:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21261 states. [2018-11-06 19:25:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21261 states to 21261 states and 21840 transitions. [2018-11-06 19:25:23,586 INFO L78 Accepts]: Start accepts. Automaton has 21261 states and 21840 transitions. Word has length 1670 [2018-11-06 19:25:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:25:23,588 INFO L480 AbstractCegarLoop]: Abstraction has 21261 states and 21840 transitions. [2018-11-06 19:25:23,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-06 19:25:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 21261 states and 21840 transitions. [2018-11-06 19:25:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1933 [2018-11-06 19:25:23,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:25:23,633 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:25:23,633 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:25:23,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:25:23,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1826266732, now seen corresponding path program 1 times [2018-11-06 19:25:23,634 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:25:23,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:25:23,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:25:23,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:25:23,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:25:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:25:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 3267 proven. 251 refuted. 0 times theorem prover too weak. 3201 trivial. 0 not checked. [2018-11-06 19:25:29,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:25:29,485 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:25:29,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:25:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:25:29,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:25:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6719 backedges. 3868 proven. 0 refuted. 0 times theorem prover too weak. 2851 trivial. 0 not checked. [2018-11-06 19:25:32,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:25:32,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2018-11-06 19:25:32,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 19:25:32,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 19:25:32,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-06 19:25:32,482 INFO L87 Difference]: Start difference. First operand 21261 states and 21840 transitions. Second operand 11 states. [2018-11-06 19:25:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:25:44,125 INFO L93 Difference]: Finished difference Result 45315 states and 46608 transitions. [2018-11-06 19:25:44,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 19:25:44,126 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1932 [2018-11-06 19:25:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:25:44,145 INFO L225 Difference]: With dead ends: 45315 [2018-11-06 19:25:44,145 INFO L226 Difference]: Without dead ends: 24386 [2018-11-06 19:25:44,156 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1961 GetRequests, 1939 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-11-06 19:25:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24386 states. [2018-11-06 19:25:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24386 to 22420. [2018-11-06 19:25:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22420 states. [2018-11-06 19:25:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22420 states to 22420 states and 22943 transitions. [2018-11-06 19:25:44,388 INFO L78 Accepts]: Start accepts. Automaton has 22420 states and 22943 transitions. Word has length 1932 [2018-11-06 19:25:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:25:44,388 INFO L480 AbstractCegarLoop]: Abstraction has 22420 states and 22943 transitions. [2018-11-06 19:25:44,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 19:25:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 22420 states and 22943 transitions. [2018-11-06 19:25:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2246 [2018-11-06 19:25:44,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:25:44,428 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:25:44,429 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:25:44,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:25:44,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1274453784, now seen corresponding path program 1 times [2018-11-06 19:25:44,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:25:44,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:25:44,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:25:44,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:25:44,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:25:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:25:45,711 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:25:45,881 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:25:46,312 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2018-11-06 19:25:46,809 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-11-06 19:25:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9742 backedges. 4289 proven. 319 refuted. 0 times theorem prover too weak. 5134 trivial. 0 not checked. [2018-11-06 19:25:51,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:25:51,842 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:25:51,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:25:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:25:52,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:25:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9742 backedges. 5414 proven. 0 refuted. 0 times theorem prover too weak. 4328 trivial. 0 not checked. [2018-11-06 19:25:54,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:25:54,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 19:25:54,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:25:54,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:25:54,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:25:54,516 INFO L87 Difference]: Start difference. First operand 22420 states and 22943 transitions. Second operand 8 states. [2018-11-06 19:25:58,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:25:58,589 INFO L93 Difference]: Finished difference Result 45538 states and 46591 transitions. [2018-11-06 19:25:58,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:25:58,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 2245 [2018-11-06 19:25:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:25:58,610 INFO L225 Difference]: With dead ends: 45538 [2018-11-06 19:25:58,611 INFO L226 Difference]: Without dead ends: 23450 [2018-11-06 19:25:58,623 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2256 GetRequests, 2247 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-06 19:25:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23450 states. [2018-11-06 19:25:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23450 to 22750. [2018-11-06 19:25:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22750 states. [2018-11-06 19:25:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22750 states to 22750 states and 23270 transitions. [2018-11-06 19:25:58,830 INFO L78 Accepts]: Start accepts. Automaton has 22750 states and 23270 transitions. Word has length 2245 [2018-11-06 19:25:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:25:58,831 INFO L480 AbstractCegarLoop]: Abstraction has 22750 states and 23270 transitions. [2018-11-06 19:25:58,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:25:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 22750 states and 23270 transitions. [2018-11-06 19:25:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2461 [2018-11-06 19:25:58,881 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:25:58,882 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:25:58,882 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:25:58,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:25:58,883 INFO L82 PathProgramCache]: Analyzing trace with hash 660163135, now seen corresponding path program 1 times [2018-11-06 19:25:58,883 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:25:58,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:25:58,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:25:58,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:25:58,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:25:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:00,949 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-06 19:26:01,193 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-06 19:26:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11160 backedges. 5477 proven. 572 refuted. 0 times theorem prover too weak. 5111 trivial. 0 not checked. [2018-11-06 19:26:05,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:26:05,108 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:26:05,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:05,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:26:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11160 backedges. 5582 proven. 467 refuted. 0 times theorem prover too weak. 5111 trivial. 0 not checked. [2018-11-06 19:26:09,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:26:09,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2018-11-06 19:26:09,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:26:09,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:26:09,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:26:09,462 INFO L87 Difference]: Start difference. First operand 22750 states and 23270 transitions. Second operand 9 states. [2018-11-06 19:26:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:14,714 INFO L93 Difference]: Finished difference Result 48389 states and 49540 transitions. [2018-11-06 19:26:14,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 19:26:14,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2460 [2018-11-06 19:26:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:14,745 INFO L225 Difference]: With dead ends: 48389 [2018-11-06 19:26:14,745 INFO L226 Difference]: Without dead ends: 25971 [2018-11-06 19:26:14,763 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2473 GetRequests, 2460 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-06 19:26:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25971 states. [2018-11-06 19:26:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25971 to 25028. [2018-11-06 19:26:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25028 states. [2018-11-06 19:26:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25028 states to 25028 states and 25565 transitions. [2018-11-06 19:26:15,025 INFO L78 Accepts]: Start accepts. Automaton has 25028 states and 25565 transitions. Word has length 2460 [2018-11-06 19:26:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:15,026 INFO L480 AbstractCegarLoop]: Abstraction has 25028 states and 25565 transitions. [2018-11-06 19:26:15,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:26:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 25028 states and 25565 transitions. [2018-11-06 19:26:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2469 [2018-11-06 19:26:15,087 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:15,088 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:26:15,088 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:15,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash 405645893, now seen corresponding path program 1 times [2018-11-06 19:26:15,089 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:15,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:15,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:15,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:15,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11695 backedges. 6106 proven. 0 refuted. 0 times theorem prover too weak. 5589 trivial. 0 not checked. [2018-11-06 19:26:18,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:26:18,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:26:18,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:26:18,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:26:18,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:26:18,688 INFO L87 Difference]: Start difference. First operand 25028 states and 25565 transitions. Second operand 4 states. [2018-11-06 19:26:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:20,585 INFO L93 Difference]: Finished difference Result 49724 states and 50796 transitions. [2018-11-06 19:26:20,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:26:20,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2468 [2018-11-06 19:26:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:20,607 INFO L225 Difference]: With dead ends: 49724 [2018-11-06 19:26:20,607 INFO L226 Difference]: Without dead ends: 25028 [2018-11-06 19:26:20,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:26:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2018-11-06 19:26:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 23993. [2018-11-06 19:26:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23993 states. [2018-11-06 19:26:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23993 states to 23993 states and 24443 transitions. [2018-11-06 19:26:20,829 INFO L78 Accepts]: Start accepts. Automaton has 23993 states and 24443 transitions. Word has length 2468 [2018-11-06 19:26:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:20,829 INFO L480 AbstractCegarLoop]: Abstraction has 23993 states and 24443 transitions. [2018-11-06 19:26:20,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:26:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 23993 states and 24443 transitions. [2018-11-06 19:26:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2483 [2018-11-06 19:26:20,872 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:20,873 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:26:20,874 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:20,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:20,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1125891096, now seen corresponding path program 1 times [2018-11-06 19:26:20,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:20,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:20,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:20,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:20,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:23,169 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-11-06 19:26:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11320 backedges. 8088 proven. 985 refuted. 0 times theorem prover too weak. 2247 trivial. 0 not checked. [2018-11-06 19:26:29,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:26:29,348 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:26:29,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:26:29,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:26:30,438 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 427 DAG size of output: 24 [2018-11-06 19:26:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11320 backedges. 7313 proven. 0 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2018-11-06 19:26:35,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:26:35,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2018-11-06 19:26:35,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:26:35,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:26:35,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:26:35,721 INFO L87 Difference]: Start difference. First operand 23993 states and 24443 transitions. Second operand 10 states. [2018-11-06 19:26:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:26:50,957 INFO L93 Difference]: Finished difference Result 52433 states and 53388 transitions. [2018-11-06 19:26:50,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-06 19:26:50,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2482 [2018-11-06 19:26:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:26:50,985 INFO L225 Difference]: With dead ends: 52433 [2018-11-06 19:26:50,985 INFO L226 Difference]: Without dead ends: 28772 [2018-11-06 19:26:50,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2512 GetRequests, 2490 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2018-11-06 19:26:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28772 states. [2018-11-06 19:26:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28772 to 22573. [2018-11-06 19:26:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22573 states. [2018-11-06 19:26:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22573 states to 22573 states and 22971 transitions. [2018-11-06 19:26:51,246 INFO L78 Accepts]: Start accepts. Automaton has 22573 states and 22971 transitions. Word has length 2482 [2018-11-06 19:26:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:26:51,248 INFO L480 AbstractCegarLoop]: Abstraction has 22573 states and 22971 transitions. [2018-11-06 19:26:51,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:26:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 22573 states and 22971 transitions. [2018-11-06 19:26:51,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2704 [2018-11-06 19:26:51,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:26:51,297 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:26:51,298 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:26:51,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:26:51,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1854556499, now seen corresponding path program 1 times [2018-11-06 19:26:51,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:26:51,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:26:51,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:51,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:26:51,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:26:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13567 backedges. 9887 proven. 1277 refuted. 0 times theorem prover too weak. 2403 trivial. 0 not checked. [2018-11-06 19:27:01,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:27:01,562 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:27:01,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:27:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:27:02,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:27:02,884 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 Received shutdown request... [2018-11-06 19:27:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13567 backedges. 10101 proven. 816 refuted. 0 times theorem prover too weak. 2650 trivial. 0 not checked. [2018-11-06 19:27:09,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:27:09,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-11-06 19:27:09,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 19:27:09,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 19:27:09,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-06 19:27:09,583 INFO L87 Difference]: Start difference. First operand 22573 states and 22971 transitions. Second operand 13 states. [2018-11-06 19:27:09,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 19:27:09,584 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:27:09,589 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:27:09,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:27:09 BoogieIcfgContainer [2018-11-06 19:27:09,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:27:09,590 INFO L168 Benchmark]: Toolchain (without parser) took 228362.79 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-06 19:27:09,591 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:27:09,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1169.60 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-11-06 19:27:09,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 325.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-06 19:27:09,593 INFO L168 Benchmark]: Boogie Preprocessor took 185.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:27:09,594 INFO L168 Benchmark]: RCFGBuilder took 6443.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.7 MB). Peak memory consumption was 256.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:27:09,594 INFO L168 Benchmark]: TraceAbstraction took 220232.85 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -296.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-06 19:27:09,600 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1169.60 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 325.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 185.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6443.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.7 MB). Peak memory consumption was 256.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220232.85 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -296.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (22573states) and FLOYD_HOARE automaton (currently 2 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 397 locations, 1 error locations. TIMEOUT Result, 220.1s OverallTime, 20 OverallIterations, 14 TraceHistogramMax, 112.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3041 SDtfs, 37563 SDslu, 2538 SDs, 0 SdLazy, 82153 SolverSat, 5786 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 90.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19011 GetRequests, 18793 SyntacticMatches, 32 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25028occurred in iteration=17, 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: 2.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 22654 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 54.8s InterpolantComputationTime, 42989 NumberOfCodeBlocks, 42989 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 42957 ConstructedInterpolants, 463 QuantifiedInterpolants, 327234605 SizeOfPredicates, 14 NumberOfNonLiveVariables, 21592 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 32 InterpolantComputations, 16 PerfectInterpolantSequences, 145455/154342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown