java -Xmx8000000000 -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 csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 03:08:35,463 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 03:08:35,465 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 03:08:35,481 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 03:08:35,482 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 03:08:35,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 03:08:35,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 03:08:35,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 03:08:35,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 03:08:35,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 03:08:35,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 03:08:35,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 03:08:35,497 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 03:08:35,498 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 03:08:35,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 03:08:35,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 03:08:35,514 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 03:08:35,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 03:08:35,517 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 03:08:35,519 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 03:08:35,520 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 03:08:35,521 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 03:08:35,523 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 03:08:35,523 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 03:08:35,523 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 03:08:35,524 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 03:08:35,525 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 03:08:35,526 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 03:08:35,527 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 03:08:35,528 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 03:08:35,528 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 03:08:35,529 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-24 03:08:35,531 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-24 03:08:35,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 03:08:35,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 03:08:35,550 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 03:08:35,551 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 03:08:35,551 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 03:08:35,552 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 03:08:35,552 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 03:08:35,553 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 03:08:35,553 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 03:08:35,553 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 03:08:35,553 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 03:08:35,554 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 03:08:35,554 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 03:08:35,554 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 03:08:35,554 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 03:08:35,555 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 03:08:35,555 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 03:08:35,555 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 03:08:35,555 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 03:08:35,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 03:08:35,556 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 03:08:35,556 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 03:08:35,556 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 03:08:35,556 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 03:08:35,556 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 03:08:35,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 03:08:35,557 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 03:08:35,557 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 03:08:35,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 03:08:35,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 03:08:35,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 03:08:35,635 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 03:08:35,636 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 03:08:35,636 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c [2018-07-24 03:08:35,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9730fe492/5d9bf72fb4a64115868b7d4d7b650faa/FLAG0a33510eb [2018-07-24 03:08:36,338 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 03:08:36,339 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c [2018-07-24 03:08:36,370 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9730fe492/5d9bf72fb4a64115868b7d4d7b650faa/FLAG0a33510eb [2018-07-24 03:08:36,390 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9730fe492/5d9bf72fb4a64115868b7d4d7b650faa [2018-07-24 03:08:36,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 03:08:36,404 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 03:08:36,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 03:08:36,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 03:08:36,415 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 03:08:36,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:08:36" (1/1) ... [2018-07-24 03:08:36,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec00d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:36, skipping insertion in model container [2018-07-24 03:08:36,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:08:36" (1/1) ... [2018-07-24 03:08:36,700 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 03:08:37,227 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:08:37,243 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 03:08:37,492 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:08:37,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37 WrapperNode [2018-07-24 03:08:37,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 03:08:37,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 03:08:37,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 03:08:37,618 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 03:08:37,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:37,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:37,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 03:08:37,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 03:08:37,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 03:08:37,867 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 03:08:38,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:38,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:38,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:38,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:38,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:38,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:38,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... [2018-07-24 03:08:38,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 03:08:38,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 03:08:38,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 03:08:38,410 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 03:08:38,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 03:08:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 03:08:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 03:08:38,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 03:08:45,442 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 03:08:45,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:08:45 BoogieIcfgContainer [2018-07-24 03:08:45,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 03:08:45,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 03:08:45,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 03:08:45,448 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 03:08:45,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:08:36" (1/3) ... [2018-07-24 03:08:45,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47974ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:08:45, skipping insertion in model container [2018-07-24 03:08:45,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:37" (2/3) ... [2018-07-24 03:08:45,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47974ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:08:45, skipping insertion in model container [2018-07-24 03:08:45,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:08:45" (3/3) ... [2018-07-24 03:08:45,452 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label02_true-unreach-call.c [2018-07-24 03:08:45,462 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 03:08:45,473 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 03:08:45,527 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 03:08:45,528 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 03:08:45,528 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 03:08:45,529 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 03:08:45,529 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 03:08:45,529 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 03:08:45,529 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 03:08:45,529 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 03:08:45,530 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 03:08:45,572 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2018-07-24 03:08:45,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-24 03:08:45,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:08:45,586 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:08:45,587 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:08:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1515441142, now seen corresponding path program 1 times [2018-07-24 03:08:45,594 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:08:45,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:08:45,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:08:45,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:08:45,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:08:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:08:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:08:46,110 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:08:46,111 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:08:46,117 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:08:46,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:08:46,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:08:46,138 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2018-07-24 03:08:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:08:53,208 INFO L93 Difference]: Finished difference Result 1473 states and 2781 transitions. [2018-07-24 03:08:53,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:08:53,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-07-24 03:08:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:08:53,241 INFO L225 Difference]: With dead ends: 1473 [2018-07-24 03:08:53,241 INFO L226 Difference]: Without dead ends: 1069 [2018-07-24 03:08:53,247 INFO L573 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 [2018-07-24 03:08:53,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-07-24 03:08:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2018-07-24 03:08:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2018-07-24 03:08:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1914 transitions. [2018-07-24 03:08:53,385 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1914 transitions. Word has length 62 [2018-07-24 03:08:53,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:08:53,386 INFO L471 AbstractCegarLoop]: Abstraction has 1069 states and 1914 transitions. [2018-07-24 03:08:53,386 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:08:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1914 transitions. [2018-07-24 03:08:53,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 03:08:53,394 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:08:53,396 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:08:53,397 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:08:53,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1711155478, now seen corresponding path program 1 times [2018-07-24 03:08:53,398 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:08:53,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:08:53,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:08:53,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:08:53,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:08:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:08:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:08:53,723 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:08:53,723 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 03:08:53,726 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:08:53,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:08:53,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:08:53,727 INFO L87 Difference]: Start difference. First operand 1069 states and 1914 transitions. Second operand 3 states. [2018-07-24 03:08:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:08:57,817 INFO L93 Difference]: Finished difference Result 2796 states and 5007 transitions. [2018-07-24 03:08:57,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:08:57,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-07-24 03:08:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:08:57,837 INFO L225 Difference]: With dead ends: 2796 [2018-07-24 03:08:57,838 INFO L226 Difference]: Without dead ends: 1729 [2018-07-24 03:08:57,843 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:08:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2018-07-24 03:08:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1729. [2018-07-24 03:08:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1729 states. [2018-07-24 03:08:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2672 transitions. [2018-07-24 03:08:57,884 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2672 transitions. Word has length 129 [2018-07-24 03:08:57,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:08:57,885 INFO L471 AbstractCegarLoop]: Abstraction has 1729 states and 2672 transitions. [2018-07-24 03:08:57,885 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:08:57,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2672 transitions. [2018-07-24 03:08:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-24 03:08:57,892 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:08:57,892 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:08:57,892 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:08:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash 693459099, now seen corresponding path program 1 times [2018-07-24 03:08:57,893 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:08:57,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:08:57,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:08:57,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:08:57,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:08:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:08:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:08:58,129 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:08:58,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:08:58,130 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:08:58,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:08:58,130 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:08:58,133 INFO L87 Difference]: Start difference. First operand 1729 states and 2672 transitions. Second operand 3 states. [2018-07-24 03:09:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:01,132 INFO L93 Difference]: Finished difference Result 4446 states and 7178 transitions. [2018-07-24 03:09:01,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:09:01,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2018-07-24 03:09:01,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:01,148 INFO L225 Difference]: With dead ends: 4446 [2018-07-24 03:09:01,149 INFO L226 Difference]: Without dead ends: 2719 [2018-07-24 03:09:01,152 INFO L573 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 [2018-07-24 03:09:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2018-07-24 03:09:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2719. [2018-07-24 03:09:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2719 states. [2018-07-24 03:09:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3887 transitions. [2018-07-24 03:09:01,211 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3887 transitions. Word has length 217 [2018-07-24 03:09:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:01,212 INFO L471 AbstractCegarLoop]: Abstraction has 2719 states and 3887 transitions. [2018-07-24 03:09:01,212 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:09:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3887 transitions. [2018-07-24 03:09:01,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-24 03:09:01,217 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:01,217 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:09:01,218 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:01,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1491633979, now seen corresponding path program 1 times [2018-07-24 03:09:01,218 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:01,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:01,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:01,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:01,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:09:01,585 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:09:01,585 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:09:01,586 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:09:01,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:09:01,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:09:01,588 INFO L87 Difference]: Start difference. First operand 2719 states and 3887 transitions. Second operand 4 states. [2018-07-24 03:09:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:10,817 INFO L93 Difference]: Finished difference Result 10716 states and 15390 transitions. [2018-07-24 03:09:10,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:09:10,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2018-07-24 03:09:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:10,856 INFO L225 Difference]: With dead ends: 10716 [2018-07-24 03:09:10,856 INFO L226 Difference]: Without dead ends: 7999 [2018-07-24 03:09:10,863 INFO L573 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 [2018-07-24 03:09:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2018-07-24 03:09:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 7999. [2018-07-24 03:09:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7999 states. [2018-07-24 03:09:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 10521 transitions. [2018-07-24 03:09:11,007 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 10521 transitions. Word has length 222 [2018-07-24 03:09:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:11,007 INFO L471 AbstractCegarLoop]: Abstraction has 7999 states and 10521 transitions. [2018-07-24 03:09:11,008 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:09:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 10521 transitions. [2018-07-24 03:09:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-24 03:09:11,017 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:11,017 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:09:11,017 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:11,018 INFO L82 PathProgramCache]: Analyzing trace with hash -630872206, now seen corresponding path program 1 times [2018-07-24 03:09:11,018 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:11,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:11,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:11,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:11,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 286 proven. 67 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 03:09:11,475 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:09:11,475 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:09:11,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:11,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:09:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-07-24 03:09:11,909 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:09:11,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-07-24 03:09:11,910 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:09:11,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:09:11,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:09:11,912 INFO L87 Difference]: Start difference. First operand 7999 states and 10521 transitions. Second operand 5 states. [2018-07-24 03:09:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:17,436 INFO L93 Difference]: Finished difference Result 20946 states and 27877 transitions. [2018-07-24 03:09:17,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:09:17,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2018-07-24 03:09:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:17,485 INFO L225 Difference]: With dead ends: 20946 [2018-07-24 03:09:17,485 INFO L226 Difference]: Without dead ends: 10949 [2018-07-24 03:09:17,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 324 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:09:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10949 states. [2018-07-24 03:09:17,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10949 to 10619. [2018-07-24 03:09:17,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10619 states. [2018-07-24 03:09:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10619 states to 10619 states and 11884 transitions. [2018-07-24 03:09:17,720 INFO L78 Accepts]: Start accepts. Automaton has 10619 states and 11884 transitions. Word has length 325 [2018-07-24 03:09:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:17,720 INFO L471 AbstractCegarLoop]: Abstraction has 10619 states and 11884 transitions. [2018-07-24 03:09:17,721 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:09:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 10619 states and 11884 transitions. [2018-07-24 03:09:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-07-24 03:09:17,729 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:17,729 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:09:17,729 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:17,730 INFO L82 PathProgramCache]: Analyzing trace with hash 85107046, now seen corresponding path program 1 times [2018-07-24 03:09:17,730 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:17,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:17,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:17,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:17,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:18,239 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 03:09:18,739 WARN L169 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-07-24 03:09:19,369 WARN L169 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2018-07-24 03:09:19,790 WARN L169 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2018-07-24 03:09:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-24 03:09:20,250 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:09:20,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 03:09:20,251 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 03:09:20,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 03:09:20,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-24 03:09:20,252 INFO L87 Difference]: Start difference. First operand 10619 states and 11884 transitions. Second operand 6 states. [2018-07-24 03:09:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:23,881 INFO L93 Difference]: Finished difference Result 21569 states and 24103 transitions. [2018-07-24 03:09:23,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:09:23,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 375 [2018-07-24 03:09:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:23,911 INFO L225 Difference]: With dead ends: 21569 [2018-07-24 03:09:23,911 INFO L226 Difference]: Without dead ends: 10952 [2018-07-24 03:09:23,921 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:09:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10952 states. [2018-07-24 03:09:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10952 to 10949. [2018-07-24 03:09:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10949 states. [2018-07-24 03:09:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10949 states to 10949 states and 12216 transitions. [2018-07-24 03:09:24,120 INFO L78 Accepts]: Start accepts. Automaton has 10949 states and 12216 transitions. Word has length 375 [2018-07-24 03:09:24,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:24,121 INFO L471 AbstractCegarLoop]: Abstraction has 10949 states and 12216 transitions. [2018-07-24 03:09:24,121 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 03:09:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10949 states and 12216 transitions. [2018-07-24 03:09:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-07-24 03:09:24,133 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:24,133 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:09:24,134 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash -294745584, now seen corresponding path program 1 times [2018-07-24 03:09:24,134 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:24,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:24,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:24,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:24,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-07-24 03:09:24,911 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:09:24,911 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:09:24,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:25,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:09:25,821 WARN L169 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 32 [2018-07-24 03:09:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 240 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:09:26,938 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:09:26,938 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-07-24 03:09:26,939 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 03:09:26,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 03:09:26,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 03:09:26,940 INFO L87 Difference]: Start difference. First operand 10949 states and 12216 transitions. Second operand 8 states. [2018-07-24 03:09:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:37,657 INFO L93 Difference]: Finished difference Result 26983 states and 29904 transitions. [2018-07-24 03:09:37,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 03:09:37,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 478 [2018-07-24 03:09:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:37,694 INFO L225 Difference]: With dead ends: 26983 [2018-07-24 03:09:37,694 INFO L226 Difference]: Without dead ends: 16250 [2018-07-24 03:09:37,703 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 03:09:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16250 states. [2018-07-24 03:09:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16250 to 15920. [2018-07-24 03:09:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15920 states. [2018-07-24 03:09:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15920 states to 15920 states and 17463 transitions. [2018-07-24 03:09:37,925 INFO L78 Accepts]: Start accepts. Automaton has 15920 states and 17463 transitions. Word has length 478 [2018-07-24 03:09:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:37,926 INFO L471 AbstractCegarLoop]: Abstraction has 15920 states and 17463 transitions. [2018-07-24 03:09:37,926 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 03:09:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 15920 states and 17463 transitions. [2018-07-24 03:09:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-07-24 03:09:37,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:37,938 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:09:37,938 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1521661597, now seen corresponding path program 1 times [2018-07-24 03:09:37,939 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:37,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:37,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:37,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:37,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-07-24 03:09:38,391 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:09:38,391 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:09:38,392 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:09:38,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:09:38,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:09:38,393 INFO L87 Difference]: Start difference. First operand 15920 states and 17463 transitions. Second operand 4 states. [2018-07-24 03:09:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:41,501 INFO L93 Difference]: Finished difference Result 35798 states and 39414 transitions. [2018-07-24 03:09:41,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:09:41,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 491 [2018-07-24 03:09:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:41,536 INFO L225 Difference]: With dead ends: 35798 [2018-07-24 03:09:41,537 INFO L226 Difference]: Without dead ends: 19216 [2018-07-24 03:09:41,553 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:09:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19216 states. [2018-07-24 03:09:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19216 to 18886. [2018-07-24 03:09:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18886 states. [2018-07-24 03:09:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18886 states to 18886 states and 20184 transitions. [2018-07-24 03:09:41,777 INFO L78 Accepts]: Start accepts. Automaton has 18886 states and 20184 transitions. Word has length 491 [2018-07-24 03:09:41,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:41,778 INFO L471 AbstractCegarLoop]: Abstraction has 18886 states and 20184 transitions. [2018-07-24 03:09:41,778 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:09:41,778 INFO L276 IsEmpty]: Start isEmpty. Operand 18886 states and 20184 transitions. [2018-07-24 03:09:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-07-24 03:09:41,803 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:41,804 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:09:41,804 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:41,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1265973217, now seen corresponding path program 1 times [2018-07-24 03:09:41,805 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:41,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:41,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:41,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:41,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-24 03:09:42,896 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:09:42,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:09:42,897 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:09:42,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:09:42,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:09:42,897 INFO L87 Difference]: Start difference. First operand 18886 states and 20184 transitions. Second operand 4 states. [2018-07-24 03:09:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:46,733 INFO L93 Difference]: Finished difference Result 41730 states and 44792 transitions. [2018-07-24 03:09:46,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:09:46,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 583 [2018-07-24 03:09:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:46,774 INFO L225 Difference]: With dead ends: 41730 [2018-07-24 03:09:46,774 INFO L226 Difference]: Without dead ends: 23176 [2018-07-24 03:09:46,794 INFO L573 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 [2018-07-24 03:09:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23176 states. [2018-07-24 03:09:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23176 to 23176. [2018-07-24 03:09:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23176 states. [2018-07-24 03:09:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23176 states to 23176 states and 24541 transitions. [2018-07-24 03:09:47,052 INFO L78 Accepts]: Start accepts. Automaton has 23176 states and 24541 transitions. Word has length 583 [2018-07-24 03:09:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:47,053 INFO L471 AbstractCegarLoop]: Abstraction has 23176 states and 24541 transitions. [2018-07-24 03:09:47,053 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:09:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 23176 states and 24541 transitions. [2018-07-24 03:09:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-07-24 03:09:47,074 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:47,075 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:09:47,075 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:47,076 INFO L82 PathProgramCache]: Analyzing trace with hash -906908027, now seen corresponding path program 1 times [2018-07-24 03:09:47,076 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:47,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:47,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:47,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:47,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-07-24 03:09:47,817 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:09:47,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:09:47,818 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:09:47,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:09:47,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:09:47,818 INFO L87 Difference]: Start difference. First operand 23176 states and 24541 transitions. Second operand 4 states. [2018-07-24 03:09:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:50,489 INFO L93 Difference]: Finished difference Result 50970 states and 54040 transitions. [2018-07-24 03:09:50,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:09:50,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 619 [2018-07-24 03:09:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:50,525 INFO L225 Difference]: With dead ends: 50970 [2018-07-24 03:09:50,525 INFO L226 Difference]: Without dead ends: 28126 [2018-07-24 03:09:50,541 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:09:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28126 states. [2018-07-24 03:09:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28126 to 27466. [2018-07-24 03:09:50,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27466 states. [2018-07-24 03:09:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27466 states to 27466 states and 28874 transitions. [2018-07-24 03:09:50,841 INFO L78 Accepts]: Start accepts. Automaton has 27466 states and 28874 transitions. Word has length 619 [2018-07-24 03:09:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:50,842 INFO L471 AbstractCegarLoop]: Abstraction has 27466 states and 28874 transitions. [2018-07-24 03:09:50,842 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:09:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 27466 states and 28874 transitions. [2018-07-24 03:09:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2018-07-24 03:09:50,860 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:50,860 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:09:50,861 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash 2144475065, now seen corresponding path program 1 times [2018-07-24 03:09:50,861 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:50,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:50,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:50,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:50,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 713 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-24 03:09:51,661 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:09:51,661 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:09:51,662 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:09:51,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:09:51,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:09:51,662 INFO L87 Difference]: Start difference. First operand 27466 states and 28874 transitions. Second operand 5 states. [2018-07-24 03:09:55,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:09:55,034 INFO L93 Difference]: Finished difference Result 62530 states and 65952 transitions. [2018-07-24 03:09:55,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 03:09:55,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 722 [2018-07-24 03:09:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:09:55,074 INFO L225 Difference]: With dead ends: 62530 [2018-07-24 03:09:55,074 INFO L226 Difference]: Without dead ends: 35396 [2018-07-24 03:09:55,093 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:09:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35396 states. [2018-07-24 03:09:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35396 to 31756. [2018-07-24 03:09:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31756 states. [2018-07-24 03:09:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31756 states to 31756 states and 33418 transitions. [2018-07-24 03:09:55,454 INFO L78 Accepts]: Start accepts. Automaton has 31756 states and 33418 transitions. Word has length 722 [2018-07-24 03:09:55,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:09:55,454 INFO L471 AbstractCegarLoop]: Abstraction has 31756 states and 33418 transitions. [2018-07-24 03:09:55,454 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:09:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 31756 states and 33418 transitions. [2018-07-24 03:09:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-07-24 03:09:55,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:09:55,463 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:09:55,463 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:09:55,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1941804930, now seen corresponding path program 1 times [2018-07-24 03:09:55,464 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:09:55,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:09:55,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:55,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:55,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:09:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 587 proven. 312 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-24 03:09:56,407 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:09:56,407 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:09:56,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:09:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:09:56,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:09:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 802 proven. 97 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-24 03:09:57,554 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:09:57,554 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-07-24 03:09:57,556 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:09:57,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:09:57,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:09:57,556 INFO L87 Difference]: Start difference. First operand 31756 states and 33418 transitions. Second operand 7 states. [2018-07-24 03:10:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:10:03,169 INFO L93 Difference]: Finished difference Result 75416 states and 79171 transitions. [2018-07-24 03:10:03,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 03:10:03,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 727 [2018-07-24 03:10:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:10:03,210 INFO L225 Difference]: With dead ends: 75416 [2018-07-24 03:10:03,211 INFO L226 Difference]: Without dead ends: 43662 [2018-07-24 03:10:03,230 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 726 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 03:10:03,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43662 states. [2018-07-24 03:10:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43662 to 27784. [2018-07-24 03:10:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27784 states. [2018-07-24 03:10:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27784 states to 27784 states and 29087 transitions. [2018-07-24 03:10:03,632 INFO L78 Accepts]: Start accepts. Automaton has 27784 states and 29087 transitions. Word has length 727 [2018-07-24 03:10:03,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:10:03,633 INFO L471 AbstractCegarLoop]: Abstraction has 27784 states and 29087 transitions. [2018-07-24 03:10:03,633 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:10:03,633 INFO L276 IsEmpty]: Start isEmpty. Operand 27784 states and 29087 transitions. [2018-07-24 03:10:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-07-24 03:10:03,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:10:03,646 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:10:03,646 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:10:03,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1813417106, now seen corresponding path program 1 times [2018-07-24 03:10:03,647 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:10:03,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:10:03,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:10:03,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:10:03,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:10:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:10:04,415 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-07-24 03:10:04,716 WARN L169 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-07-24 03:10:05,053 WARN L169 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-07-24 03:10:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 733 proven. 5 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-07-24 03:10:05,847 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:10:05,847 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:10:05,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:10:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:10:06,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:10:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-07-24 03:10:06,858 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:10:06,858 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-07-24 03:10:06,860 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 03:10:06,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 03:10:06,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-24 03:10:06,860 INFO L87 Difference]: Start difference. First operand 27784 states and 29087 transitions. Second operand 8 states. [2018-07-24 03:10:18,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:10:18,172 INFO L93 Difference]: Finished difference Result 62840 states and 65822 transitions. [2018-07-24 03:10:18,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 03:10:18,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 752 [2018-07-24 03:10:18,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:10:18,205 INFO L225 Difference]: With dead ends: 62840 [2018-07-24 03:10:18,206 INFO L226 Difference]: Without dead ends: 35388 [2018-07-24 03:10:18,224 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 757 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-07-24 03:10:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35388 states. [2018-07-24 03:10:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35388 to 28110. [2018-07-24 03:10:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28110 states. [2018-07-24 03:10:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28110 states to 28110 states and 29228 transitions. [2018-07-24 03:10:18,511 INFO L78 Accepts]: Start accepts. Automaton has 28110 states and 29228 transitions. Word has length 752 [2018-07-24 03:10:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:10:18,511 INFO L471 AbstractCegarLoop]: Abstraction has 28110 states and 29228 transitions. [2018-07-24 03:10:18,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 03:10:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 28110 states and 29228 transitions. [2018-07-24 03:10:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-07-24 03:10:18,520 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:10:18,520 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:10:18,520 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:10:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash -690422455, now seen corresponding path program 1 times [2018-07-24 03:10:18,521 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:10:18,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:10:18,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:10:18,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:10:18,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:10:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:10:19,489 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-07-24 03:10:19,721 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 3 [2018-07-24 03:10:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 691 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:10:20,512 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:10:20,512 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:10:20,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:10:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:10:20,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:10:27,312 WARN L169 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 140 DAG size of output: 24 Received shutdown request... [2018-07-24 03:12:43,386 WARN L177 SmtUtils]: Removed 8 from assertion stack [2018-07-24 03:12:43,387 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 03:12:43,588 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:12:43,588 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 03:12:43,594 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 03:12:43,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:12:43 BoogieIcfgContainer [2018-07-24 03:12:43,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 03:12:43,595 INFO L168 Benchmark]: Toolchain (without parser) took 247192.23 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 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-24 03:12:43,596 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 03:12:43,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1211.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-07-24 03:12:43,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 249.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 03:12:43,599 INFO L168 Benchmark]: Boogie Preprocessor took 540.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -980.1 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2018-07-24 03:12:43,599 INFO L168 Benchmark]: RCFGBuilder took 7035.28 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 297.9 MB). Peak memory consumption was 297.9 MB. Max. memory is 7.1 GB. [2018-07-24 03:12:43,600 INFO L168 Benchmark]: TraceAbstraction took 238150.35 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -452.3 MB). Peak memory consumption was 887.2 MB. Max. memory is 7.1 GB. [2018-07-24 03:12:43,612 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1211.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 249.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 540.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -980.1 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7035.28 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 297.9 MB). Peak memory consumption was 297.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238150.35 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -452.3 MB). Peak memory consumption was 887.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was analyzing trace of length 785 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 742. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 397 locations, 1 error locations. TIMEOUT Result, 238.0s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 73.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2916 SDtfs, 11568 SDslu, 1244 SDs, 0 SdLazy, 31071 SolverSat, 4354 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 62.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2354 GetRequests, 2295 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31756occurred in iteration=11, 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: 2.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 28449 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 7984 NumberOfCodeBlocks, 7984 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7967 ConstructedInterpolants, 58 QuantifiedInterpolants, 19868044 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2739 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 7392/8050 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label02_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_03-12-43-636.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label02_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_03-12-43-636.csv Completed graceful shutdown