java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:09:50,460 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:09:50,462 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:09:50,474 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:09:50,474 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:09:50,475 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:09:50,476 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:09:50,478 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:09:50,480 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:09:50,481 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:09:50,482 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:09:50,482 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:09:50,483 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:09:50,484 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:09:50,486 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:09:50,487 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:09:50,488 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:09:50,493 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:09:50,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:09:50,500 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:09:50,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:09:50,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:09:50,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:09:50,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:09:50,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:09:50,511 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:09:50,513 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:09:50,514 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:09:50,514 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:09:50,517 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:09:50,517 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:09:50,518 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:09:50,522 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:09:50,550 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:09:50,550 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:09:50,551 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:09:50,552 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:09:50,552 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:09:50,553 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:09:50,553 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:09:50,553 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:09:50,553 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:09:50,553 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:09:50,554 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:09:50,554 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:09:50,554 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:09:50,554 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:09:50,554 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:09:50,554 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:09:50,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:09:50,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:09:50,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:09:50,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:09:50,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:09:50,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:09:50,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:09:50,558 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:09:50,559 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:09:50,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:09:50,559 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:09:50,559 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:09:50,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:09:50,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:09:50,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:09:50,647 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:09:50,647 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:09:50,648 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label51_false-unreach-call.c [2018-10-26 19:09:50,715 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/406cb71da/567588918d684013a68c4cb2b6bae3ba/FLAG49399a22b [2018-10-26 19:09:51,503 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:09:51,505 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label51_false-unreach-call.c [2018-10-26 19:09:51,539 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/406cb71da/567588918d684013a68c4cb2b6bae3ba/FLAG49399a22b [2018-10-26 19:09:51,562 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/406cb71da/567588918d684013a68c4cb2b6bae3ba [2018-10-26 19:09:51,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:09:51,577 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:09:51,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:09:51,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:09:51,585 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:09:51,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:09:51" (1/1) ... [2018-10-26 19:09:51,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27751410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:51, skipping insertion in model container [2018-10-26 19:09:51,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:09:51" (1/1) ... [2018-10-26 19:09:51,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:09:51,779 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:09:53,056 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:09:53,064 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:09:53,706 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:09:53,741 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:09:53,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53 WrapperNode [2018-10-26 19:09:53,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:09:53,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:09:53,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:09:53,744 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:09:53,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:53,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:54,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:09:54,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:09:54,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:09:54,373 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:09:54,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:54,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:54,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:54,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:54,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:54,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:54,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... [2018-10-26 19:09:54,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:09:54,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:09:54,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:09:54,823 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:09:54,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:09:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:09:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:09:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:10:03,867 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:10:03,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:10:03 BoogieIcfgContainer [2018-10-26 19:10:03,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:10:03,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:10:03,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:10:03,873 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:10:03,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:09:51" (1/3) ... [2018-10-26 19:10:03,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379d12e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:10:03, skipping insertion in model container [2018-10-26 19:10:03,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:09:53" (2/3) ... [2018-10-26 19:10:03,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379d12e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:10:03, skipping insertion in model container [2018-10-26 19:10:03,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:10:03" (3/3) ... [2018-10-26 19:10:03,878 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label51_false-unreach-call.c [2018-10-26 19:10:03,887 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:10:03,896 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:10:03,914 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:10:03,957 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:10:03,958 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:10:03,958 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:10:03,958 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:10:03,959 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:10:03,959 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:10:03,959 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:10:03,959 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:10:03,959 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:10:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 19:10:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 19:10:03,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:04,000 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:04,002 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:04,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:04,008 INFO L82 PathProgramCache]: Analyzing trace with hash -643220670, now seen corresponding path program 1 times [2018-10-26 19:10:04,010 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:04,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:04,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:04,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:04,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:04,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:04,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:10:04,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:10:04,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:10:04,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:04,374 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 19:10:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:15,920 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 19:10:15,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:10:15,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-10-26 19:10:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:15,961 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 19:10:15,961 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 19:10:15,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 19:10:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 19:10:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 19:10:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3906 transitions. [2018-10-26 19:10:16,141 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3906 transitions. Word has length 12 [2018-10-26 19:10:16,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:16,142 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3906 transitions. [2018-10-26 19:10:16,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:10:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3906 transitions. [2018-10-26 19:10:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-26 19:10:16,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:16,148 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:10:16,148 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:16,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:16,149 INFO L82 PathProgramCache]: Analyzing trace with hash -411040474, now seen corresponding path program 1 times [2018-10-26 19:10:16,149 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:16,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:16,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:16,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:16,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:16,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:16,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:10:16,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:10:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:10:16,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:16,434 INFO L87 Difference]: Start difference. First operand 2320 states and 3906 transitions. Second operand 4 states. [2018-10-26 19:10:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:33,512 INFO L93 Difference]: Finished difference Result 9150 states and 15496 transitions. [2018-10-26 19:10:33,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:10:33,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-26 19:10:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:33,548 INFO L225 Difference]: With dead ends: 9150 [2018-10-26 19:10:33,548 INFO L226 Difference]: Without dead ends: 6832 [2018-10-26 19:10:33,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-26 19:10:33,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-26 19:10:33,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-26 19:10:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 9986 transitions. [2018-10-26 19:10:33,677 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 9986 transitions. Word has length 87 [2018-10-26 19:10:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:33,677 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 9986 transitions. [2018-10-26 19:10:33,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:10:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 9986 transitions. [2018-10-26 19:10:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-26 19:10:33,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:33,683 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:33,683 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:33,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:33,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1564158229, now seen corresponding path program 1 times [2018-10-26 19:10:33,684 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:33,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:33,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:33,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:33,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:33,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:10:33,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:10:33,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:10:33,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:10:33,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:33,927 INFO L87 Difference]: Start difference. First operand 6832 states and 9986 transitions. Second operand 4 states. [2018-10-26 19:10:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:10:42,181 INFO L93 Difference]: Finished difference Result 27214 states and 39832 transitions. [2018-10-26 19:10:42,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:10:42,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-10-26 19:10:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:10:42,263 INFO L225 Difference]: With dead ends: 27214 [2018-10-26 19:10:42,264 INFO L226 Difference]: Without dead ends: 20384 [2018-10-26 19:10:42,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:10:42,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20384 states. [2018-10-26 19:10:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 13600. [2018-10-26 19:10:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-26 19:10:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 17824 transitions. [2018-10-26 19:10:42,560 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 17824 transitions. Word has length 112 [2018-10-26 19:10:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:10:42,566 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 17824 transitions. [2018-10-26 19:10:42,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:10:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 17824 transitions. [2018-10-26 19:10:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-26 19:10:42,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:10:42,578 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:10:42,578 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:10:42,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:10:42,578 INFO L82 PathProgramCache]: Analyzing trace with hash 939713106, now seen corresponding path program 1 times [2018-10-26 19:10:42,579 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:10:42,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:10:42,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:42,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:42,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:10:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 85 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:43,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:10:43,125 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:10:43,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:10:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:10:43,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:10:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:10:43,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:10:43,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 19:10:43,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:10:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:10:43,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:10:43,432 INFO L87 Difference]: Start difference. First operand 13600 states and 17824 transitions. Second operand 7 states. [2018-10-26 19:10:43,988 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-26 19:11:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:05,937 INFO L93 Difference]: Finished difference Result 58062 states and 73567 transitions. [2018-10-26 19:11:05,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:11:05,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2018-10-26 19:11:05,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:06,017 INFO L225 Difference]: With dead ends: 58062 [2018-10-26 19:11:06,017 INFO L226 Difference]: Without dead ends: 42205 [2018-10-26 19:11:06,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:11:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42205 states. [2018-10-26 19:11:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42205 to 27887. [2018-10-26 19:11:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27887 states. [2018-10-26 19:11:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27887 states to 27887 states and 33248 transitions. [2018-10-26 19:11:06,608 INFO L78 Accepts]: Start accepts. Automaton has 27887 states and 33248 transitions. Word has length 161 [2018-10-26 19:11:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:06,608 INFO L481 AbstractCegarLoop]: Abstraction has 27887 states and 33248 transitions. [2018-10-26 19:11:06,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:11:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 27887 states and 33248 transitions. [2018-10-26 19:11:06,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-26 19:11:06,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:06,616 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:11:06,617 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:06,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:06,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1696742965, now seen corresponding path program 1 times [2018-10-26 19:11:06,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:06,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:06,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:06,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:06,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-26 19:11:06,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:06,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:11:06,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:06,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:06,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:06,973 INFO L87 Difference]: Start difference. First operand 27887 states and 33248 transitions. Second operand 4 states. [2018-10-26 19:11:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:15,476 INFO L93 Difference]: Finished difference Result 62540 states and 74532 transitions. [2018-10-26 19:11:15,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:11:15,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 227 [2018-10-26 19:11:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:15,524 INFO L225 Difference]: With dead ends: 62540 [2018-10-26 19:11:15,525 INFO L226 Difference]: Without dead ends: 29356 [2018-10-26 19:11:15,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:15,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2018-10-26 19:11:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 28604. [2018-10-26 19:11:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28604 states. [2018-10-26 19:11:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28604 states to 28604 states and 31908 transitions. [2018-10-26 19:11:15,881 INFO L78 Accepts]: Start accepts. Automaton has 28604 states and 31908 transitions. Word has length 227 [2018-10-26 19:11:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:15,882 INFO L481 AbstractCegarLoop]: Abstraction has 28604 states and 31908 transitions. [2018-10-26 19:11:15,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:11:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 28604 states and 31908 transitions. [2018-10-26 19:11:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-26 19:11:15,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:15,892 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:11:15,892 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:15,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:15,893 INFO L82 PathProgramCache]: Analyzing trace with hash 596553913, now seen corresponding path program 1 times [2018-10-26 19:11:15,893 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:15,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:15,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:15,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:15,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:16,341 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 19:11:17,061 WARN L179 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2018-10-26 19:11:17,550 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2018-10-26 19:11:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 19:11:17,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:17,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:11:17,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:11:17,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:11:17,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:11:17,759 INFO L87 Difference]: Start difference. First operand 28604 states and 31908 transitions. Second operand 6 states. [2018-10-26 19:11:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:27,265 INFO L93 Difference]: Finished difference Result 69991 states and 78136 transitions. [2018-10-26 19:11:27,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:11:27,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 344 [2018-10-26 19:11:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:27,323 INFO L225 Difference]: With dead ends: 69991 [2018-10-26 19:11:27,324 INFO L226 Difference]: Without dead ends: 41389 [2018-10-26 19:11:27,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:11:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41389 states. [2018-10-26 19:11:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41389 to 41389. [2018-10-26 19:11:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41389 states. [2018-10-26 19:11:27,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41389 states to 41389 states and 45451 transitions. [2018-10-26 19:11:27,821 INFO L78 Accepts]: Start accepts. Automaton has 41389 states and 45451 transitions. Word has length 344 [2018-10-26 19:11:27,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:27,822 INFO L481 AbstractCegarLoop]: Abstraction has 41389 states and 45451 transitions. [2018-10-26 19:11:27,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:11:27,822 INFO L276 IsEmpty]: Start isEmpty. Operand 41389 states and 45451 transitions. [2018-10-26 19:11:27,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-26 19:11:27,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:27,834 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:11:27,834 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:27,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1828801490, now seen corresponding path program 1 times [2018-10-26 19:11:27,835 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:27,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:27,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:27,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:27,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-26 19:11:28,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:28,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:11:28,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:28,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:28,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:28,363 INFO L87 Difference]: Start difference. First operand 41389 states and 45451 transitions. Second operand 4 states. [2018-10-26 19:11:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:38,492 INFO L93 Difference]: Finished difference Result 141432 states and 156079 transitions. [2018-10-26 19:11:38,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:11:38,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 383 [2018-10-26 19:11:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:38,595 INFO L225 Difference]: With dead ends: 141432 [2018-10-26 19:11:38,596 INFO L226 Difference]: Without dead ends: 100797 [2018-10-26 19:11:38,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100797 states. [2018-10-26 19:11:39,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100797 to 90269. [2018-10-26 19:11:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90269 states. [2018-10-26 19:11:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90269 states to 90269 states and 98740 transitions. [2018-10-26 19:11:39,680 INFO L78 Accepts]: Start accepts. Automaton has 90269 states and 98740 transitions. Word has length 383 [2018-10-26 19:11:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:39,681 INFO L481 AbstractCegarLoop]: Abstraction has 90269 states and 98740 transitions. [2018-10-26 19:11:39,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:11:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 90269 states and 98740 transitions. [2018-10-26 19:11:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-26 19:11:39,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:39,695 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:11:39,695 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:39,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:39,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1065329849, now seen corresponding path program 1 times [2018-10-26 19:11:39,697 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:39,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:39,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:39,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:39,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 19:11:40,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:40,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:11:40,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:40,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:40,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:40,244 INFO L87 Difference]: Start difference. First operand 90269 states and 98740 transitions. Second operand 4 states. [2018-10-26 19:11:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:48,352 INFO L93 Difference]: Finished difference Result 190312 states and 207984 transitions. [2018-10-26 19:11:48,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:11:48,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 390 [2018-10-26 19:11:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:48,461 INFO L225 Difference]: With dead ends: 190312 [2018-10-26 19:11:48,462 INFO L226 Difference]: Without dead ends: 100797 [2018-10-26 19:11:48,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100797 states. [2018-10-26 19:11:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100797 to 97789. [2018-10-26 19:11:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97789 states. [2018-10-26 19:11:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97789 states to 97789 states and 105902 transitions. [2018-10-26 19:11:49,396 INFO L78 Accepts]: Start accepts. Automaton has 97789 states and 105902 transitions. Word has length 390 [2018-10-26 19:11:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:49,397 INFO L481 AbstractCegarLoop]: Abstraction has 97789 states and 105902 transitions. [2018-10-26 19:11:49,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:11:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 97789 states and 105902 transitions. [2018-10-26 19:11:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-26 19:11:49,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:49,413 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:11:49,413 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:49,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:49,414 INFO L82 PathProgramCache]: Analyzing trace with hash -132197812, now seen corresponding path program 1 times [2018-10-26 19:11:49,414 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:49,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:49,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:49,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:49,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-26 19:11:49,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:11:49,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:11:49,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:11:49,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:11:49,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:49,812 INFO L87 Difference]: Start difference. First operand 97789 states and 105902 transitions. Second operand 4 states. [2018-10-26 19:11:56,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:11:56,132 INFO L93 Difference]: Finished difference Result 194072 states and 210261 transitions. [2018-10-26 19:11:56,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:11:56,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2018-10-26 19:11:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:11:56,238 INFO L225 Difference]: With dead ends: 194072 [2018-10-26 19:11:56,239 INFO L226 Difference]: Without dead ends: 96284 [2018-10-26 19:11:56,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:11:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96284 states. [2018-10-26 19:11:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96284 to 94780. [2018-10-26 19:11:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94780 states. [2018-10-26 19:11:57,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94780 states to 94780 states and 100091 transitions. [2018-10-26 19:11:57,077 INFO L78 Accepts]: Start accepts. Automaton has 94780 states and 100091 transitions. Word has length 431 [2018-10-26 19:11:57,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:11:57,078 INFO L481 AbstractCegarLoop]: Abstraction has 94780 states and 100091 transitions. [2018-10-26 19:11:57,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:11:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand 94780 states and 100091 transitions. [2018-10-26 19:11:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-10-26 19:11:57,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:11:57,095 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:11:57,096 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:11:57,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:11:57,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1410158607, now seen corresponding path program 1 times [2018-10-26 19:11:57,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:11:57,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:11:57,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:57,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:57,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:11:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:57,845 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-26 19:11:58,217 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-26 19:11:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 264 proven. 263 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-26 19:11:58,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:11:58,604 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:11:58,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:11:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:11:58,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:11:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2018-10-26 19:11:58,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:11:58,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-26 19:11:58,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 19:11:58,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 19:11:58,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 19:11:58,949 INFO L87 Difference]: Start difference. First operand 94780 states and 100091 transitions. Second operand 8 states. [2018-10-26 19:12:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:18,463 INFO L93 Difference]: Finished difference Result 200831 states and 212676 transitions. [2018-10-26 19:12:18,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 19:12:18,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 487 [2018-10-26 19:12:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:18,586 INFO L225 Difference]: With dead ends: 200831 [2018-10-26 19:12:18,587 INFO L226 Difference]: Without dead ends: 106805 [2018-10-26 19:12:18,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-10-26 19:12:18,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106805 states. [2018-10-26 19:12:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106805 to 102293. [2018-10-26 19:12:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102293 states. [2018-10-26 19:12:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102293 states to 102293 states and 106753 transitions. [2018-10-26 19:12:19,600 INFO L78 Accepts]: Start accepts. Automaton has 102293 states and 106753 transitions. Word has length 487 [2018-10-26 19:12:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:19,601 INFO L481 AbstractCegarLoop]: Abstraction has 102293 states and 106753 transitions. [2018-10-26 19:12:19,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 19:12:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 102293 states and 106753 transitions. [2018-10-26 19:12:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2018-10-26 19:12:19,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:19,623 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:19,623 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:19,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1200594269, now seen corresponding path program 1 times [2018-10-26 19:12:19,624 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:19,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:19,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:19,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:19,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 735 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 19:12:20,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:12:20,494 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:12:20,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:20,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:12:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-10-26 19:12:21,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:12:21,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-10-26 19:12:21,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:12:21,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:12:21,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:12:21,327 INFO L87 Difference]: Start difference. First operand 102293 states and 106753 transitions. Second operand 7 states. [2018-10-26 19:12:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:45,644 INFO L93 Difference]: Finished difference Result 221127 states and 230919 transitions. [2018-10-26 19:12:45,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 19:12:45,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 595 [2018-10-26 19:12:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:45,762 INFO L225 Difference]: With dead ends: 221127 [2018-10-26 19:12:45,762 INFO L226 Difference]: Without dead ends: 118079 [2018-10-26 19:12:45,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-10-26 19:12:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118079 states. [2018-10-26 19:12:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118079 to 105295. [2018-10-26 19:12:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105295 states. [2018-10-26 19:12:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105295 states to 105295 states and 108917 transitions. [2018-10-26 19:12:46,724 INFO L78 Accepts]: Start accepts. Automaton has 105295 states and 108917 transitions. Word has length 595 [2018-10-26 19:12:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:46,725 INFO L481 AbstractCegarLoop]: Abstraction has 105295 states and 108917 transitions. [2018-10-26 19:12:46,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:12:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 105295 states and 108917 transitions. [2018-10-26 19:12:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2018-10-26 19:12:46,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:46,792 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:46,793 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:46,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:46,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1102714161, now seen corresponding path program 1 times [2018-10-26 19:12:46,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:46,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:46,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:46,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:46,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-10-26 19:12:47,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:47,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:12:47,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:12:47,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:12:47,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:12:47,891 INFO L87 Difference]: Start difference. First operand 105295 states and 108917 transitions. Second operand 3 states. [2018-10-26 19:12:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:52,430 INFO L93 Difference]: Finished difference Result 209836 states and 217075 transitions. [2018-10-26 19:12:52,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:12:52,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 896 [2018-10-26 19:12:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:52,538 INFO L225 Difference]: With dead ends: 209836 [2018-10-26 19:12:52,539 INFO L226 Difference]: Without dead ends: 105295 [2018-10-26 19:12:52,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:12:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105295 states. [2018-10-26 19:12:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105295 to 103039. [2018-10-26 19:12:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103039 states. [2018-10-26 19:12:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103039 states to 103039 states and 105535 transitions. [2018-10-26 19:12:53,901 INFO L78 Accepts]: Start accepts. Automaton has 103039 states and 105535 transitions. Word has length 896 [2018-10-26 19:12:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:53,902 INFO L481 AbstractCegarLoop]: Abstraction has 103039 states and 105535 transitions. [2018-10-26 19:12:53,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:12:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 103039 states and 105535 transitions. [2018-10-26 19:12:53,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2018-10-26 19:12:53,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:53,946 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:12:53,946 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:53,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:53,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1631882367, now seen corresponding path program 1 times [2018-10-26 19:12:53,947 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:53,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:53,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:53,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:53,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:54,813 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:12:55,076 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-26 19:12:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 441 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:12:57,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:12:57,002 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:12:57,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:57,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:12:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 441 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-26 19:12:59,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:12:59,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-26 19:12:59,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:12:59,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:12:59,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:12:59,443 INFO L87 Difference]: Start difference. First operand 103039 states and 105535 transitions. Second operand 6 states. [2018-10-26 19:13:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:13,951 INFO L93 Difference]: Finished difference Result 220364 states and 225714 transitions. [2018-10-26 19:13:13,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:13:13,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 928 [2018-10-26 19:13:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:14,084 INFO L225 Difference]: With dead ends: 220364 [2018-10-26 19:13:14,084 INFO L226 Difference]: Without dead ends: 118079 [2018-10-26 19:13:14,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 927 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:13:14,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118079 states. [2018-10-26 19:13:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118079 to 109807. [2018-10-26 19:13:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109807 states. [2018-10-26 19:13:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109807 states to 109807 states and 112316 transitions. [2018-10-26 19:13:15,757 INFO L78 Accepts]: Start accepts. Automaton has 109807 states and 112316 transitions. Word has length 928 [2018-10-26 19:13:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:15,758 INFO L481 AbstractCegarLoop]: Abstraction has 109807 states and 112316 transitions. [2018-10-26 19:13:15,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:13:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 109807 states and 112316 transitions. [2018-10-26 19:13:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2018-10-26 19:13:15,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:15,840 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:15,840 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:15,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1350264206, now seen corresponding path program 1 times [2018-10-26 19:13:15,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:15,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:15,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:15,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:15,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 634 proven. 86 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-10-26 19:13:17,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:13:17,701 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:13:17,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:17,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:13:18,394 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 19 [2018-10-26 19:13:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1049 backedges. 634 proven. 86 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-10-26 19:13:19,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:13:19,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-26 19:13:19,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:13:19,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:13:19,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:13:19,838 INFO L87 Difference]: Start difference. First operand 109807 states and 112316 transitions. Second operand 7 states. [2018-10-26 19:13:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:38,639 INFO L93 Difference]: Finished difference Result 289549 states and 295949 transitions. [2018-10-26 19:13:38,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:13:38,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1038 [2018-10-26 19:13:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:38,849 INFO L225 Difference]: With dead ends: 289549 [2018-10-26 19:13:38,849 INFO L226 Difference]: Without dead ends: 180496 [2018-10-26 19:13:38,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 1036 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:13:39,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180496 states. [2018-10-26 19:13:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180496 to 148911. [2018-10-26 19:13:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148911 states. [2018-10-26 19:13:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148911 states to 148911 states and 151576 transitions. [2018-10-26 19:13:41,388 INFO L78 Accepts]: Start accepts. Automaton has 148911 states and 151576 transitions. Word has length 1038 [2018-10-26 19:13:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:41,388 INFO L481 AbstractCegarLoop]: Abstraction has 148911 states and 151576 transitions. [2018-10-26 19:13:41,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:13:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 148911 states and 151576 transitions. [2018-10-26 19:13:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2018-10-26 19:13:41,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:41,450 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:41,451 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:41,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:41,452 INFO L82 PathProgramCache]: Analyzing trace with hash -57718096, now seen corresponding path program 1 times [2018-10-26 19:13:41,452 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:41,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:41,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:41,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:41,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 756 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-10-26 19:13:42,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:42,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:13:42,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:42,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:42,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:42,307 INFO L87 Difference]: Start difference. First operand 148911 states and 151576 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 19:13:43,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:13:43,381 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:13:43,388 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:13:43,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:13:43 BoogieIcfgContainer [2018-10-26 19:13:43,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:13:43,389 INFO L168 Benchmark]: Toolchain (without parser) took 231813.59 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 656.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:43,391 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:13:43,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2161.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:43,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 628.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -988.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:43,393 INFO L168 Benchmark]: Boogie Preprocessor took 449.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:43,394 INFO L168 Benchmark]: RCFGBuilder took 9045.41 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 219.7 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -174.3 MB). Peak memory consumption was 629.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:43,395 INFO L168 Benchmark]: TraceAbstraction took 219518.65 ms. Allocated memory was 2.5 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -624.4 MB). Peak memory consumption was 554.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:13:43,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2161.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 628.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -988.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 449.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9045.41 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 219.7 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -174.3 MB). Peak memory consumption was 629.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219518.65 ms. Allocated memory was 2.5 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -624.4 MB). Peak memory consumption was 554.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (148911states) and FLOYD_HOARE automaton (currently 3 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (309 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 219.4s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 186.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7393 SDtfs, 44157 SDslu, 1257 SDs, 0 SdLazy, 96563 SolverSat, 16371 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 151.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3306 GetRequests, 3234 SyntacticMatches, 12 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148911occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 96303 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 10359 NumberOfCodeBlocks, 10359 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 10339 ConstructedInterpolants, 87 QuantifiedInterpolants, 25509836 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3937 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 8398/8983 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown