java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 03:46:13,360 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 03:46:13,362 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 03:46:13,377 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 03:46:13,378 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 03:46:13,379 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 03:46:13,380 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 03:46:13,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 03:46:13,388 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 03:46:13,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 03:46:13,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 03:46:13,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 03:46:13,392 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 03:46:13,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 03:46:13,394 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 03:46:13,394 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 03:46:13,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 03:46:13,397 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 03:46:13,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 03:46:13,400 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 03:46:13,401 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 03:46:13,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 03:46:13,404 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 03:46:13,412 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 03:46:13,431 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 03:46:13,431 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 03:46:13,432 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 03:46:13,432 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 03:46:13,433 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 03:46:13,433 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 03:46:13,433 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 03:46:13,434 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 03:46:13,434 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 03:46:13,434 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 03:46:13,434 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 03:46:13,434 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 03:46:13,435 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 03:46:13,435 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 03:46:13,435 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 03:46:13,435 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 03:46:13,435 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 03:46:13,436 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 03:46:13,436 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 03:46:13,436 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 03:46:13,436 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 03:46:13,436 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 03:46:13,436 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 03:46:13,437 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 03:46:13,438 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 03:46:13,438 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 03:46:13,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 03:46:13,439 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 03:46:13,439 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 03:46:13,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 03:46:13,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 03:46:13,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 03:46:13,505 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 03:46:13,506 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 03:46:13,509 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c [2018-07-22 03:46:13,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee5691c8/96fb74494b384a1497ab01030eae70c8/FLAG9a670295b [2018-07-22 03:46:14,302 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 03:46:14,303 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c [2018-07-22 03:46:14,344 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee5691c8/96fb74494b384a1497ab01030eae70c8/FLAG9a670295b [2018-07-22 03:46:14,361 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee5691c8/96fb74494b384a1497ab01030eae70c8 [2018-07-22 03:46:14,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 03:46:14,378 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 03:46:14,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 03:46:14,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 03:46:14,390 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 03:46:14,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:46:14" (1/1) ... [2018-07-22 03:46:14,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5fd596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:14, skipping insertion in model container [2018-07-22 03:46:14,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:46:14" (1/1) ... [2018-07-22 03:46:14,658 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 03:46:15,319 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 03:46:15,336 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 03:46:15,729 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 03:46:15,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15 WrapperNode [2018-07-22 03:46:15,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 03:46:15,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 03:46:15,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 03:46:15,862 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 03:46:15,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:15,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:16,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 03:46:16,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 03:46:16,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 03:46:16,127 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 03:46:16,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:16,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:16,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:16,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:16,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:16,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:16,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... [2018-07-22 03:46:16,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 03:46:16,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 03:46:16,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 03:46:16,888 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 03:46:16,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 03:46:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 03:46:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 03:46:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 03:46:24,328 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 03:46:24,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:46:24 BoogieIcfgContainer [2018-07-22 03:46:24,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 03:46:24,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 03:46:24,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 03:46:24,333 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 03:46:24,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:46:14" (1/3) ... [2018-07-22 03:46:24,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d21550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:46:24, skipping insertion in model container [2018-07-22 03:46:24,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:46:15" (2/3) ... [2018-07-22 03:46:24,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d21550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:46:24, skipping insertion in model container [2018-07-22 03:46:24,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:46:24" (3/3) ... [2018-07-22 03:46:24,336 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label47_false-unreach-call.c [2018-07-22 03:46:24,345 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 03:46:24,354 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 03:46:24,409 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 03:46:24,410 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 03:46:24,410 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 03:46:24,410 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 03:46:24,410 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 03:46:24,410 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 03:46:24,411 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 03:46:24,411 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 03:46:24,411 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 03:46:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-07-22 03:46:24,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-22 03:46:24,444 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:46:24,445 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:46:24,445 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:46:24,449 INFO L82 PathProgramCache]: Analyzing trace with hash -974970054, now seen corresponding path program 1 times [2018-07-22 03:46:24,450 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:46:24,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:46:24,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:24,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:46:24,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:46:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:46:24,885 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:46:24,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:46:24,889 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 03:46:24,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 03:46:24,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:46:24,907 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 5 states. [2018-07-22 03:46:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:46:30,219 INFO L93 Difference]: Finished difference Result 1472 states and 2722 transitions. [2018-07-22 03:46:30,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:46:30,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-07-22 03:46:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:46:30,246 INFO L225 Difference]: With dead ends: 1472 [2018-07-22 03:46:30,247 INFO L226 Difference]: Without dead ends: 1040 [2018-07-22 03:46:30,258 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:46:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2018-07-22 03:46:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1036. [2018-07-22 03:46:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-07-22 03:46:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1672 transitions. [2018-07-22 03:46:30,413 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1672 transitions. Word has length 10 [2018-07-22 03:46:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:46:30,413 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1672 transitions. [2018-07-22 03:46:30,414 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 03:46:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1672 transitions. [2018-07-22 03:46:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-22 03:46:30,420 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:46:30,421 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 03:46:30,421 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:46:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1563984693, now seen corresponding path program 1 times [2018-07-22 03:46:30,422 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:46:30,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:46:30,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:30,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:46:30,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:46:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:46:30,985 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:46:30,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:46:30,989 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:46:30,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:46:30,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:46:30,990 INFO L87 Difference]: Start difference. First operand 1036 states and 1672 transitions. Second operand 4 states. [2018-07-22 03:46:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:46:38,203 INFO L93 Difference]: Finished difference Result 3880 states and 6373 transitions. [2018-07-22 03:46:38,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:46:38,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2018-07-22 03:46:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:46:38,265 INFO L225 Difference]: With dead ends: 3880 [2018-07-22 03:46:38,266 INFO L226 Difference]: Without dead ends: 2846 [2018-07-22 03:46:38,274 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:46:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2018-07-22 03:46:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2844. [2018-07-22 03:46:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2018-07-22 03:46:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4039 transitions. [2018-07-22 03:46:38,402 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4039 transitions. Word has length 130 [2018-07-22 03:46:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:46:38,402 INFO L471 AbstractCegarLoop]: Abstraction has 2844 states and 4039 transitions. [2018-07-22 03:46:38,403 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:46:38,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4039 transitions. [2018-07-22 03:46:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-22 03:46:38,413 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:46:38,413 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:46:38,414 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:46:38,414 INFO L82 PathProgramCache]: Analyzing trace with hash -254523295, now seen corresponding path program 1 times [2018-07-22 03:46:38,414 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:46:38,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:46:38,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:38,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:46:38,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:46:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-22 03:46:38,780 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:46:38,781 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:46:38,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:46:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:46:38,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:46:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:46:39,054 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:46:39,054 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 03:46:39,055 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:46:39,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:46:39,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:46:39,056 INFO L87 Difference]: Start difference. First operand 2844 states and 4039 transitions. Second operand 4 states. [2018-07-22 03:46:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:46:44,723 INFO L93 Difference]: Finished difference Result 10857 states and 15533 transitions. [2018-07-22 03:46:44,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:46:44,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2018-07-22 03:46:44,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:46:44,761 INFO L225 Difference]: With dead ends: 10857 [2018-07-22 03:46:44,761 INFO L226 Difference]: Without dead ends: 8015 [2018-07-22 03:46:44,766 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:46:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2018-07-22 03:46:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 4646. [2018-07-22 03:46:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4646 states. [2018-07-22 03:46:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 6263 transitions. [2018-07-22 03:46:44,910 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 6263 transitions. Word has length 222 [2018-07-22 03:46:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:46:44,911 INFO L471 AbstractCegarLoop]: Abstraction has 4646 states and 6263 transitions. [2018-07-22 03:46:44,911 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:46:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 6263 transitions. [2018-07-22 03:46:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-22 03:46:44,918 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:46:44,918 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:46:44,919 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:46:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1420812569, now seen corresponding path program 1 times [2018-07-22 03:46:44,919 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:46:44,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:46:44,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:44,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:46:44,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:46:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-22 03:46:45,717 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:46:45,717 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 03:46:45,717 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 03:46:45,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 03:46:45,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-22 03:46:45,718 INFO L87 Difference]: Start difference. First operand 4646 states and 6263 transitions. Second operand 6 states. [2018-07-22 03:46:54,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:46:54,332 INFO L93 Difference]: Finished difference Result 14116 states and 18973 transitions. [2018-07-22 03:46:54,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 03:46:54,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 290 [2018-07-22 03:46:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:46:54,359 INFO L225 Difference]: With dead ends: 14116 [2018-07-22 03:46:54,359 INFO L226 Difference]: Without dead ends: 9472 [2018-07-22 03:46:54,366 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-22 03:46:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9472 states. [2018-07-22 03:46:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9472 to 9156. [2018-07-22 03:46:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9156 states. [2018-07-22 03:46:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9156 states to 9156 states and 11649 transitions. [2018-07-22 03:46:54,583 INFO L78 Accepts]: Start accepts. Automaton has 9156 states and 11649 transitions. Word has length 290 [2018-07-22 03:46:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:46:54,583 INFO L471 AbstractCegarLoop]: Abstraction has 9156 states and 11649 transitions. [2018-07-22 03:46:54,584 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 03:46:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9156 states and 11649 transitions. [2018-07-22 03:46:54,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-22 03:46:54,591 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:46:54,591 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:46:54,591 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:46:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1135046547, now seen corresponding path program 1 times [2018-07-22 03:46:54,592 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:46:54,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:46:54,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:54,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:46:54,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:46:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-22 03:46:55,029 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:46:55,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:46:55,030 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 03:46:55,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 03:46:55,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:46:55,031 INFO L87 Difference]: Start difference. First operand 9156 states and 11649 transitions. Second operand 3 states. [2018-07-22 03:46:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:46:58,024 INFO L93 Difference]: Finished difference Result 20410 states and 25725 transitions. [2018-07-22 03:46:58,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 03:46:58,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 350 [2018-07-22 03:46:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:46:58,074 INFO L225 Difference]: With dead ends: 20410 [2018-07-22 03:46:58,074 INFO L226 Difference]: Without dead ends: 11256 [2018-07-22 03:46:58,084 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:46:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11256 states. [2018-07-22 03:46:58,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11256 to 9153. [2018-07-22 03:46:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9153 states. [2018-07-22 03:46:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9153 states to 9153 states and 11645 transitions. [2018-07-22 03:46:58,387 INFO L78 Accepts]: Start accepts. Automaton has 9153 states and 11645 transitions. Word has length 350 [2018-07-22 03:46:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:46:58,388 INFO L471 AbstractCegarLoop]: Abstraction has 9153 states and 11645 transitions. [2018-07-22 03:46:58,388 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 03:46:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 9153 states and 11645 transitions. [2018-07-22 03:46:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-22 03:46:58,400 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:46:58,400 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:46:58,402 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:46:58,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2053283462, now seen corresponding path program 1 times [2018-07-22 03:46:58,403 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:46:58,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:46:58,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:58,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:46:58,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:46:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:46:59,055 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-07-22 03:46:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-22 03:46:59,384 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:46:59,384 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-22 03:46:59,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:46:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:46:59,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:47:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-22 03:47:00,122 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 03:47:00,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-07-22 03:47:00,123 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 03:47:00,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 03:47:00,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-22 03:47:00,124 INFO L87 Difference]: Start difference. First operand 9153 states and 11645 transitions. Second operand 7 states. [2018-07-22 03:47:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:47:09,112 INFO L93 Difference]: Finished difference Result 32866 states and 41914 transitions. [2018-07-22 03:47:09,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 03:47:09,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2018-07-22 03:47:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:47:09,152 INFO L225 Difference]: With dead ends: 32866 [2018-07-22 03:47:09,153 INFO L226 Difference]: Without dead ends: 23715 [2018-07-22 03:47:09,163 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-22 03:47:09,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23715 states. [2018-07-22 03:47:09,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23715 to 14579. [2018-07-22 03:47:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14579 states. [2018-07-22 03:47:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14579 states to 14579 states and 17777 transitions. [2018-07-22 03:47:09,483 INFO L78 Accepts]: Start accepts. Automaton has 14579 states and 17777 transitions. Word has length 389 [2018-07-22 03:47:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:47:09,484 INFO L471 AbstractCegarLoop]: Abstraction has 14579 states and 17777 transitions. [2018-07-22 03:47:09,484 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 03:47:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 14579 states and 17777 transitions. [2018-07-22 03:47:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-22 03:47:09,496 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:47:09,496 INFO L358 BasicCegarLoop]: trace histogram [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, 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] [2018-07-22 03:47:09,497 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:47:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1689584263, now seen corresponding path program 1 times [2018-07-22 03:47:09,497 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:47:09,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:47:09,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:09,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:09,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:10,190 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-22 03:47:10,753 WARN L169 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-07-22 03:47:11,492 WARN L169 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-07-22 03:47:12,100 WARN L169 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2018-07-22 03:47:12,836 WARN L169 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 13 [2018-07-22 03:47:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 164 proven. 72 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-22 03:47:13,430 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:47:13,430 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:47:13,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:13,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:47:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-22 03:47:13,850 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:47:13,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2018-07-22 03:47:13,851 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-22 03:47:13,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-22 03:47:13,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-07-22 03:47:13,851 INFO L87 Difference]: Start difference. First operand 14579 states and 17777 transitions. Second operand 13 states. [2018-07-22 03:47:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:47:26,584 INFO L93 Difference]: Finished difference Result 37625 states and 45480 transitions. [2018-07-22 03:47:26,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-22 03:47:26,585 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 431 [2018-07-22 03:47:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:47:26,630 INFO L225 Difference]: With dead ends: 37625 [2018-07-22 03:47:26,631 INFO L226 Difference]: Without dead ends: 23348 [2018-07-22 03:47:26,646 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 435 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2018-07-22 03:47:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23348 states. [2018-07-22 03:47:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23348 to 19045. [2018-07-22 03:47:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19045 states. [2018-07-22 03:47:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19045 states to 19045 states and 22930 transitions. [2018-07-22 03:47:26,996 INFO L78 Accepts]: Start accepts. Automaton has 19045 states and 22930 transitions. Word has length 431 [2018-07-22 03:47:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:47:26,997 INFO L471 AbstractCegarLoop]: Abstraction has 19045 states and 22930 transitions. [2018-07-22 03:47:26,997 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-22 03:47:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 19045 states and 22930 transitions. [2018-07-22 03:47:27,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-07-22 03:47:27,010 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:47:27,010 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-07-22 03:47:27,011 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:47:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash 874859049, now seen corresponding path program 1 times [2018-07-22 03:47:27,011 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:47:27,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:47:27,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:27,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:27,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 400 proven. 4 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-22 03:47:28,007 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:47:28,007 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:47:28,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:28,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:47:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-22 03:47:28,512 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:47:28,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-07-22 03:47:28,513 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-22 03:47:28,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-22 03:47:28,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-07-22 03:47:28,513 INFO L87 Difference]: Start difference. First operand 19045 states and 22930 transitions. Second operand 8 states. [2018-07-22 03:47:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:47:34,041 INFO L93 Difference]: Finished difference Result 44957 states and 53179 transitions. [2018-07-22 03:47:34,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-22 03:47:34,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2018-07-22 03:47:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:47:34,073 INFO L225 Difference]: With dead ends: 44957 [2018-07-22 03:47:34,074 INFO L226 Difference]: Without dead ends: 18120 [2018-07-22 03:47:34,095 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 452 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-07-22 03:47:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18120 states. [2018-07-22 03:47:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18120 to 17234. [2018-07-22 03:47:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17234 states. [2018-07-22 03:47:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17234 states to 17234 states and 19428 transitions. [2018-07-22 03:47:34,335 INFO L78 Accepts]: Start accepts. Automaton has 17234 states and 19428 transitions. Word has length 449 [2018-07-22 03:47:34,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:47:34,336 INFO L471 AbstractCegarLoop]: Abstraction has 17234 states and 19428 transitions. [2018-07-22 03:47:34,336 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-22 03:47:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 17234 states and 19428 transitions. [2018-07-22 03:47:34,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-07-22 03:47:34,349 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:47:34,350 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 03:47:34,350 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:47:34,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1264170111, now seen corresponding path program 1 times [2018-07-22 03:47:34,350 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:47:34,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:47:34,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:34,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:34,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:35,203 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-22 03:47:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 186 proven. 136 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-22 03:47:35,640 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:47:35,640 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:47:35,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:35,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:47:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-22 03:47:36,260 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:47:36,261 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-07-22 03:47:36,262 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 03:47:36,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 03:47:36,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-22 03:47:36,262 INFO L87 Difference]: Start difference. First operand 17234 states and 19428 transitions. Second operand 9 states. [2018-07-22 03:47:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:47:42,605 INFO L93 Difference]: Finished difference Result 34348 states and 38737 transitions. [2018-07-22 03:47:42,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-22 03:47:42,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 513 [2018-07-22 03:47:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:47:42,626 INFO L225 Difference]: With dead ends: 34348 [2018-07-22 03:47:42,627 INFO L226 Difference]: Without dead ends: 17416 [2018-07-22 03:47:42,635 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 517 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-22 03:47:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17416 states. [2018-07-22 03:47:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17416 to 16628. [2018-07-22 03:47:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16628 states. [2018-07-22 03:47:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16628 states to 16628 states and 17997 transitions. [2018-07-22 03:47:42,851 INFO L78 Accepts]: Start accepts. Automaton has 16628 states and 17997 transitions. Word has length 513 [2018-07-22 03:47:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:47:42,853 INFO L471 AbstractCegarLoop]: Abstraction has 16628 states and 17997 transitions. [2018-07-22 03:47:42,853 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 03:47:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 16628 states and 17997 transitions. [2018-07-22 03:47:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-07-22 03:47:42,867 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:47:42,868 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 03:47:42,868 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:47:42,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1424034646, now seen corresponding path program 1 times [2018-07-22 03:47:42,872 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:47:42,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:47:42,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:42,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:42,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:43,513 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 5 [2018-07-22 03:47:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2018-07-22 03:47:43,628 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:47:43,628 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:47:43,628 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:47:43,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:47:43,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:47:43,629 INFO L87 Difference]: Start difference. First operand 16628 states and 17997 transitions. Second operand 4 states. [2018-07-22 03:47:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:47:48,407 INFO L93 Difference]: Finished difference Result 44669 states and 48510 transitions. [2018-07-22 03:47:48,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:47:48,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 535 [2018-07-22 03:47:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:47:48,472 INFO L225 Difference]: With dead ends: 44669 [2018-07-22 03:47:48,472 INFO L226 Difference]: Without dead ends: 28343 [2018-07-22 03:47:48,484 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:47:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28343 states. [2018-07-22 03:47:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28343 to 27415. [2018-07-22 03:47:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27415 states. [2018-07-22 03:47:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27415 states to 27415 states and 29533 transitions. [2018-07-22 03:47:48,799 INFO L78 Accepts]: Start accepts. Automaton has 27415 states and 29533 transitions. Word has length 535 [2018-07-22 03:47:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:47:48,800 INFO L471 AbstractCegarLoop]: Abstraction has 27415 states and 29533 transitions. [2018-07-22 03:47:48,801 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:47:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 27415 states and 29533 transitions. [2018-07-22 03:47:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2018-07-22 03:47:48,819 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:47:48,820 INFO L358 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:47:48,820 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:47:48,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1841932869, now seen corresponding path program 1 times [2018-07-22 03:47:48,821 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:47:48,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:47:48,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:48,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:48,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-22 03:47:49,284 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:47:49,284 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:47:49,284 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 03:47:49,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 03:47:49,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:47:49,285 INFO L87 Difference]: Start difference. First operand 27415 states and 29533 transitions. Second operand 3 states. [2018-07-22 03:47:52,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:47:52,154 INFO L93 Difference]: Finished difference Result 50608 states and 54752 transitions. [2018-07-22 03:47:52,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 03:47:52,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 617 [2018-07-22 03:47:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:47:52,180 INFO L225 Difference]: With dead ends: 50608 [2018-07-22 03:47:52,180 INFO L226 Difference]: Without dead ends: 27713 [2018-07-22 03:47:52,194 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:47:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27713 states. [2018-07-22 03:47:52,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27713 to 27413. [2018-07-22 03:47:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27413 states. [2018-07-22 03:47:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27413 states to 27413 states and 29529 transitions. [2018-07-22 03:47:52,445 INFO L78 Accepts]: Start accepts. Automaton has 27413 states and 29529 transitions. Word has length 617 [2018-07-22 03:47:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:47:52,445 INFO L471 AbstractCegarLoop]: Abstraction has 27413 states and 29529 transitions. [2018-07-22 03:47:52,445 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 03:47:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand 27413 states and 29529 transitions. [2018-07-22 03:47:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-07-22 03:47:52,462 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:47:52,462 INFO L358 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 03:47:52,462 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:47:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash 510276748, now seen corresponding path program 1 times [2018-07-22 03:47:52,463 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:47:52,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:47:52,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:52,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:52,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:47:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:53,183 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-22 03:47:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 476 proven. 107 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-07-22 03:47:53,910 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:47:53,943 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:47:53,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:47:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:47:54,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:47:54,822 WARN L169 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 482 DAG size of output: 22 [2018-07-22 03:47:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-07-22 03:47:55,546 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:47:55,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2018-07-22 03:47:55,548 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-22 03:47:55,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-22 03:47:55,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-07-22 03:47:55,548 INFO L87 Difference]: Start difference. First operand 27413 states and 29529 transitions. Second operand 12 states. Received shutdown request... [2018-07-22 03:50:25,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-22 03:50:25,882 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 03:50:25,887 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 03:50:25,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:50:25 BoogieIcfgContainer [2018-07-22 03:50:25,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 03:50:25,888 INFO L168 Benchmark]: Toolchain (without parser) took 251516.10 ms. Allocated memory was 309.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 248.8 MB in the beginning and 993.2 MB in the end (delta: -744.4 MB). Peak memory consumption was 574.7 MB. Max. memory is 5.3 GB. [2018-07-22 03:50:25,889 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 309.3 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 03:50:25,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1481.06 ms. Allocated memory was 309.3 MB in the beginning and 333.4 MB in the end (delta: 24.1 MB). Free memory was 248.8 MB in the beginning and 239.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 71.2 MB. Max. memory is 5.3 GB. [2018-07-22 03:50:25,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 264.66 ms. Allocated memory is still 333.4 MB. Free memory was 239.9 MB in the beginning and 197.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 5.3 GB. [2018-07-22 03:50:25,893 INFO L168 Benchmark]: Boogie Preprocessor took 760.18 ms. Allocated memory was 333.4 MB in the beginning and 588.3 MB in the end (delta: 254.8 MB). Free memory was 197.0 MB in the beginning and 518.0 MB in the end (delta: -321.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 5.3 GB. [2018-07-22 03:50:25,893 INFO L168 Benchmark]: RCFGBuilder took 7441.52 ms. Allocated memory was 588.3 MB in the beginning and 591.4 MB in the end (delta: 3.1 MB). Free memory was 518.0 MB in the beginning and 381.9 MB in the end (delta: 136.1 MB). Peak memory consumption was 200.3 MB. Max. memory is 5.3 GB. [2018-07-22 03:50:25,894 INFO L168 Benchmark]: TraceAbstraction took 241557.89 ms. Allocated memory was 591.4 MB in the beginning and 1.6 GB in the end (delta: 1.0 GB). Free memory was 381.9 MB in the beginning and 993.2 MB in the end (delta: -611.3 MB). Peak memory consumption was 425.8 MB. Max. memory is 5.3 GB. [2018-07-22 03:50:25,898 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 309.3 MB. Free memory is still 274.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 1481.06 ms. Allocated memory was 309.3 MB in the beginning and 333.4 MB in the end (delta: 24.1 MB). Free memory was 248.8 MB in the beginning and 239.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 71.2 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 264.66 ms. Allocated memory is still 333.4 MB. Free memory was 239.9 MB in the beginning and 197.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 760.18 ms. Allocated memory was 333.4 MB in the beginning and 588.3 MB in the end (delta: 254.8 MB). Free memory was 197.0 MB in the beginning and 518.0 MB in the end (delta: -321.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 7441.52 ms. Allocated memory was 588.3 MB in the beginning and 591.4 MB in the end (delta: 3.1 MB). Free memory was 518.0 MB in the beginning and 381.9 MB in the end (delta: 136.1 MB). Peak memory consumption was 200.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 241557.89 ms. Allocated memory was 591.4 MB in the beginning and 1.6 GB in the end (delta: 1.0 GB). Free memory was 381.9 MB in the beginning and 993.2 MB in the end (delta: -611.3 MB). Peak memory consumption was 425.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (27413states) and interpolant automaton (currently 8 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (76148 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 241.4s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 221.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3242 SDtfs, 19503 SDslu, 3085 SDs, 0 SdLazy, 39676 SolverSat, 6117 SolverUnsat, 70 SolverUnknown, 0 SolverNotchecked, 211.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2740 GetRequests, 2658 SyntacticMatches, 16 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27415occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 22135 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 7216 NumberOfCodeBlocks, 7216 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7198 ConstructedInterpolants, 133 QuantifiedInterpolants, 17686955 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3271 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 5010/5363 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem15_label47_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_03-50-25-910.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem15_label47_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_03-50-25-910.csv Completed graceful shutdown