java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 12:31:01,537 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 12:31:01,539 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 12:31:01,552 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 12:31:01,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 12:31:01,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 12:31:01,554 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 12:31:01,558 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 12:31:01,560 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 12:31:01,560 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 12:31:01,561 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 12:31:01,561 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 12:31:01,564 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 12:31:01,564 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 12:31:01,565 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 12:31:01,566 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 12:31:01,567 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 12:31:01,569 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 12:31:01,570 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 12:31:01,572 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 12:31:01,573 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 12:31:01,574 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 12:31:01,576 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 12:31:01,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 12:31:01,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 12:31:01,577 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 12:31:01,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 12:31:01,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 12:31:01,580 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 12:31:01,581 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 12:31:01,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 12:31:01,582 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-22 12:31:01,582 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-22 12:31:01,582 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-22 12:31:01,583 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-22 12:31:01,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-22 12:31:01,584 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 12:31:01,598 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 12:31:01,599 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 12:31:01,599 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 12:31:01,600 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 12:31:01,600 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 12:31:01,600 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 12:31:01,600 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 12:31:01,601 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 12:31:01,601 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 12:31:01,601 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 12:31:01,601 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 12:31:01,601 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 12:31:01,602 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 12:31:01,602 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 12:31:01,602 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 12:31:01,602 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 12:31:01,602 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 12:31:01,603 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 12:31:01,603 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 12:31:01,603 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 12:31:01,603 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 12:31:01,603 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 12:31:01,603 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 12:31:01,604 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 12:31:01,604 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 12:31:01,604 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 12:31:01,604 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 12:31:01,604 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 12:31:01,605 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 12:31:01,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 12:31:01,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 12:31:01,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 12:31:01,670 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 12:31:01,671 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 12:31:01,671 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-07-22 12:31:02,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/716509087/bb14fc9692284525ac74b006849f6bb1/FLAG4a05b0190 [2018-07-22 12:31:02,583 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 12:31:02,584 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-07-22 12:31:02,652 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/716509087/bb14fc9692284525ac74b006849f6bb1/FLAG4a05b0190 [2018-07-22 12:31:02,673 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/716509087/bb14fc9692284525ac74b006849f6bb1 [2018-07-22 12:31:02,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 12:31:02,692 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 12:31:02,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 12:31:02,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 12:31:02,702 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 12:31:02,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:31:02" (1/1) ... [2018-07-22 12:31:02,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8eb838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:02, skipping insertion in model container [2018-07-22 12:31:02,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:31:02" (1/1) ... [2018-07-22 12:31:03,128 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 12:31:04,362 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 12:31:04,380 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 12:31:05,380 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 12:31:05,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05 WrapperNode [2018-07-22 12:31:05,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 12:31:05,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 12:31:05,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 12:31:05,785 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 12:31:05,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:06,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:06,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 12:31:06,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 12:31:06,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 12:31:06,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 12:31:06,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:06,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:06,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:06,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:06,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:08,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:08,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... [2018-07-22 12:31:08,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 12:31:08,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 12:31:08,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 12:31:08,444 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 12:31:08,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 12:31:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 12:31:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 12:31:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 12:31:20,165 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 12:31:20,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:31:20 BoogieIcfgContainer [2018-07-22 12:31:20,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 12:31:20,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 12:31:20,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 12:31:20,178 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 12:31:20,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:31:02" (1/3) ... [2018-07-22 12:31:20,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d005d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:31:20, skipping insertion in model container [2018-07-22 12:31:20,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:31:05" (2/3) ... [2018-07-22 12:31:20,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d005d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:31:20, skipping insertion in model container [2018-07-22 12:31:20,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:31:20" (3/3) ... [2018-07-22 12:31:20,182 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-07-22 12:31:20,190 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 12:31:20,199 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 12:31:20,269 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 12:31:20,270 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 12:31:20,270 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 12:31:20,270 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 12:31:20,270 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 12:31:20,270 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 12:31:20,271 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 12:31:20,271 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 12:31:20,271 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 12:31:20,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-07-22 12:31:20,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-22 12:31:20,322 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:31:20,323 INFO L358 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] [2018-07-22 12:31:20,324 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:31:20,333 INFO L82 PathProgramCache]: Analyzing trace with hash 861450858, now seen corresponding path program 1 times [2018-07-22 12:31:20,335 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:31:20,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:31:20,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:31:20,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:31:20,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:31:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:31:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:31:20,849 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:31:20,850 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:31:20,852 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:31:20,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:31:20,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:31:20,871 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-07-22 12:31:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:31:36,083 INFO L93 Difference]: Finished difference Result 3863 states and 7261 transitions. [2018-07-22 12:31:36,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:31:36,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-07-22 12:31:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:31:36,128 INFO L225 Difference]: With dead ends: 3863 [2018-07-22 12:31:36,128 INFO L226 Difference]: Without dead ends: 2757 [2018-07-22 12:31:36,136 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:31:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-07-22 12:31:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2736. [2018-07-22 12:31:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2018-07-22 12:31:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4486 transitions. [2018-07-22 12:31:36,389 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4486 transitions. Word has length 39 [2018-07-22 12:31:36,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:31:36,390 INFO L471 AbstractCegarLoop]: Abstraction has 2736 states and 4486 transitions. [2018-07-22 12:31:36,390 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:31:36,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4486 transitions. [2018-07-22 12:31:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-22 12:31:36,397 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:31:36,397 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:31:36,398 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:31:36,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1023290552, now seen corresponding path program 1 times [2018-07-22 12:31:36,398 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:31:36,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:31:36,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:31:36,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:31:36,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:31:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:31:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:31:36,863 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:31:36,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:31:36,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:31:36,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:31:36,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:31:36,868 INFO L87 Difference]: Start difference. First operand 2736 states and 4486 transitions. Second operand 4 states. [2018-07-22 12:31:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:31:48,690 INFO L93 Difference]: Finished difference Result 10268 states and 17048 transitions. [2018-07-22 12:31:48,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:31:48,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-07-22 12:31:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:31:48,735 INFO L225 Difference]: With dead ends: 10268 [2018-07-22 12:31:48,735 INFO L226 Difference]: Without dead ends: 7534 [2018-07-22 12:31:48,741 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:31:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7534 states. [2018-07-22 12:31:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7534 to 7528. [2018-07-22 12:31:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7528 states. [2018-07-22 12:31:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11328 transitions. [2018-07-22 12:31:48,939 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11328 transitions. Word has length 126 [2018-07-22 12:31:48,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:31:48,939 INFO L471 AbstractCegarLoop]: Abstraction has 7528 states and 11328 transitions. [2018-07-22 12:31:48,940 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:31:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11328 transitions. [2018-07-22 12:31:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-22 12:31:48,947 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:31:48,947 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:31:48,947 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:31:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1950410039, now seen corresponding path program 1 times [2018-07-22 12:31:48,948 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:31:48,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:31:48,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:31:48,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:31:48,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:31:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:31:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-22 12:31:49,308 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:31:49,308 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 12:31:49,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:31:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:31:49,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:31:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:31:49,494 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:31:49,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 12:31:49,495 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:31:49,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:31:49,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:31:49,496 INFO L87 Difference]: Start difference. First operand 7528 states and 11328 transitions. Second operand 4 states. [2018-07-22 12:31:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:31:58,691 INFO L93 Difference]: Finished difference Result 26960 states and 40379 transitions. [2018-07-22 12:31:58,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:31:58,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-07-22 12:31:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:31:58,772 INFO L225 Difference]: With dead ends: 26960 [2018-07-22 12:31:58,772 INFO L226 Difference]: Without dead ends: 19434 [2018-07-22 12:31:58,784 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:31:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19434 states. [2018-07-22 12:31:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19434 to 13833. [2018-07-22 12:31:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13833 states. [2018-07-22 12:31:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13833 states to 13833 states and 19394 transitions. [2018-07-22 12:31:59,183 INFO L78 Accepts]: Start accepts. Automaton has 13833 states and 19394 transitions. Word has length 136 [2018-07-22 12:31:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:31:59,184 INFO L471 AbstractCegarLoop]: Abstraction has 13833 states and 19394 transitions. [2018-07-22 12:31:59,185 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:31:59,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13833 states and 19394 transitions. [2018-07-22 12:31:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-22 12:31:59,193 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:31:59,194 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:31:59,194 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:31:59,194 INFO L82 PathProgramCache]: Analyzing trace with hash -505956794, now seen corresponding path program 1 times [2018-07-22 12:31:59,194 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:31:59,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:31:59,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:31:59,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:31:59,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:31:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:31:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:31:59,495 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:31:59,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:31:59,495 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:31:59,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:31:59,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:31:59,496 INFO L87 Difference]: Start difference. First operand 13833 states and 19394 transitions. Second operand 4 states. [2018-07-22 12:32:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:32:05,917 INFO L93 Difference]: Finished difference Result 34803 states and 47475 transitions. [2018-07-22 12:32:05,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:32:05,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-07-22 12:32:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:32:05,964 INFO L225 Difference]: With dead ends: 34803 [2018-07-22 12:32:05,964 INFO L226 Difference]: Without dead ends: 20972 [2018-07-22 12:32:05,978 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:32:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20972 states. [2018-07-22 12:32:06,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20972 to 18566. [2018-07-22 12:32:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18566 states. [2018-07-22 12:32:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 24842 transitions. [2018-07-22 12:32:06,374 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 24842 transitions. Word has length 156 [2018-07-22 12:32:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:32:06,375 INFO L471 AbstractCegarLoop]: Abstraction has 18566 states and 24842 transitions. [2018-07-22 12:32:06,375 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:32:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 24842 transitions. [2018-07-22 12:32:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-07-22 12:32:06,382 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:32:06,382 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 12:32:06,382 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:32:06,382 INFO L82 PathProgramCache]: Analyzing trace with hash 270634656, now seen corresponding path program 1 times [2018-07-22 12:32:06,382 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:32:06,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:32:06,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:06,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:32:06,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:32:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-07-22 12:32:06,706 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:32:06,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:32:06,707 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:32:06,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:32:06,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:32:06,708 INFO L87 Difference]: Start difference. First operand 18566 states and 24842 transitions. Second operand 4 states. [2018-07-22 12:32:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:32:15,724 INFO L93 Difference]: Finished difference Result 59979 states and 80640 transitions. [2018-07-22 12:32:15,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:32:15,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2018-07-22 12:32:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:32:15,794 INFO L225 Difference]: With dead ends: 59979 [2018-07-22 12:32:15,794 INFO L226 Difference]: Without dead ends: 41415 [2018-07-22 12:32:15,813 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:32:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41415 states. [2018-07-22 12:32:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41415 to 39049. [2018-07-22 12:32:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39049 states. [2018-07-22 12:32:16,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39049 states to 39049 states and 48502 transitions. [2018-07-22 12:32:16,436 INFO L78 Accepts]: Start accepts. Automaton has 39049 states and 48502 transitions. Word has length 185 [2018-07-22 12:32:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:32:16,437 INFO L471 AbstractCegarLoop]: Abstraction has 39049 states and 48502 transitions. [2018-07-22 12:32:16,437 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:32:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 39049 states and 48502 transitions. [2018-07-22 12:32:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-22 12:32:16,445 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:32:16,446 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:32:16,446 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:32:16,447 INFO L82 PathProgramCache]: Analyzing trace with hash -561417294, now seen corresponding path program 1 times [2018-07-22 12:32:16,447 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:32:16,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:32:16,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:16,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:32:16,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:32:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 122 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 12:32:17,048 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:32:17,049 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 12:32:17,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:32:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:32:17,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:32:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-22 12:32:17,269 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:32:17,270 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 12:32:17,270 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 12:32:17,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 12:32:17,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-22 12:32:17,271 INFO L87 Difference]: Start difference. First operand 39049 states and 48502 transitions. Second operand 6 states. [2018-07-22 12:32:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:32:27,722 INFO L93 Difference]: Finished difference Result 97791 states and 119969 transitions. [2018-07-22 12:32:27,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 12:32:27,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 282 [2018-07-22 12:32:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:32:27,782 INFO L225 Difference]: With dead ends: 97791 [2018-07-22 12:32:27,782 INFO L226 Difference]: Without dead ends: 48413 [2018-07-22 12:32:27,813 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-22 12:32:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48413 states. [2018-07-22 12:32:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48413 to 42108. [2018-07-22 12:32:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42108 states. [2018-07-22 12:32:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42108 states to 42108 states and 47223 transitions. [2018-07-22 12:32:28,353 INFO L78 Accepts]: Start accepts. Automaton has 42108 states and 47223 transitions. Word has length 282 [2018-07-22 12:32:28,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:32:28,354 INFO L471 AbstractCegarLoop]: Abstraction has 42108 states and 47223 transitions. [2018-07-22 12:32:28,354 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 12:32:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 42108 states and 47223 transitions. [2018-07-22 12:32:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-07-22 12:32:28,371 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:32:28,372 INFO L358 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:32:28,372 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:32:28,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1237488959, now seen corresponding path program 1 times [2018-07-22 12:32:28,372 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:32:28,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:32:28,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:28,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:32:28,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:32:28,947 WARN L169 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-07-22 12:32:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-07-22 12:32:29,215 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:32:29,215 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:32:29,215 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:32:29,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:32:29,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:32:29,216 INFO L87 Difference]: Start difference. First operand 42108 states and 47223 transitions. Second operand 5 states. [2018-07-22 12:32:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:32:38,033 INFO L93 Difference]: Finished difference Result 107935 states and 120620 transitions. [2018-07-22 12:32:38,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:32:38,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 438 [2018-07-22 12:32:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:32:38,102 INFO L225 Difference]: With dead ends: 107935 [2018-07-22 12:32:38,102 INFO L226 Difference]: Without dead ends: 65829 [2018-07-22 12:32:38,129 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:32:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65829 states. [2018-07-22 12:32:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65829 to 64201. [2018-07-22 12:32:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64201 states. [2018-07-22 12:32:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64201 states to 64201 states and 70951 transitions. [2018-07-22 12:32:38,769 INFO L78 Accepts]: Start accepts. Automaton has 64201 states and 70951 transitions. Word has length 438 [2018-07-22 12:32:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:32:38,769 INFO L471 AbstractCegarLoop]: Abstraction has 64201 states and 70951 transitions. [2018-07-22 12:32:38,769 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:32:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 64201 states and 70951 transitions. [2018-07-22 12:32:38,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-07-22 12:32:38,788 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:32:38,789 INFO L358 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-22 12:32:38,789 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:32:38,789 INFO L82 PathProgramCache]: Analyzing trace with hash -722982189, now seen corresponding path program 1 times [2018-07-22 12:32:38,790 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:32:38,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:32:38,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:38,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:32:38,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:32:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 481 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-07-22 12:32:39,371 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:32:39,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:32:39,372 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:32:39,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:32:39,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:32:39,372 INFO L87 Difference]: Start difference. First operand 64201 states and 70951 transitions. Second operand 4 states. [2018-07-22 12:32:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:32:48,291 INFO L93 Difference]: Finished difference Result 151283 states and 168184 transitions. [2018-07-22 12:32:48,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:32:48,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 445 [2018-07-22 12:32:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:32:48,366 INFO L225 Difference]: With dead ends: 151283 [2018-07-22 12:32:48,367 INFO L226 Difference]: Without dead ends: 87872 [2018-07-22 12:32:48,401 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:32:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87872 states. [2018-07-22 12:32:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87872 to 87054. [2018-07-22 12:32:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87054 states. [2018-07-22 12:32:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87054 states to 87054 states and 94667 transitions. [2018-07-22 12:32:49,380 INFO L78 Accepts]: Start accepts. Automaton has 87054 states and 94667 transitions. Word has length 445 [2018-07-22 12:32:49,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:32:49,380 INFO L471 AbstractCegarLoop]: Abstraction has 87054 states and 94667 transitions. [2018-07-22 12:32:49,380 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:32:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 87054 states and 94667 transitions. [2018-07-22 12:32:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-07-22 12:32:49,400 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:32:49,400 INFO L358 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:32:49,400 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:32:49,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1558498739, now seen corresponding path program 1 times [2018-07-22 12:32:49,401 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:32:49,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:32:49,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:49,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:32:49,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:32:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:32:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 550 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-07-22 12:32:50,038 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:32:50,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:32:50,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 12:32:50,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 12:32:50,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:32:50,039 INFO L87 Difference]: Start difference. First operand 87054 states and 94667 transitions. Second operand 5 states. [2018-07-22 12:33:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:33:05,258 INFO L93 Difference]: Finished difference Result 268143 states and 291299 transitions. [2018-07-22 12:33:05,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:33:05,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 473 [2018-07-22 12:33:05,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:33:05,519 INFO L225 Difference]: With dead ends: 268143 [2018-07-22 12:33:05,519 INFO L226 Difference]: Without dead ends: 181879 [2018-07-22 12:33:05,560 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 12:33:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181879 states. [2018-07-22 12:33:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181879 to 169088. [2018-07-22 12:33:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169088 states. [2018-07-22 12:33:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169088 states to 169088 states and 182205 transitions. [2018-07-22 12:33:07,509 INFO L78 Accepts]: Start accepts. Automaton has 169088 states and 182205 transitions. Word has length 473 [2018-07-22 12:33:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:33:07,509 INFO L471 AbstractCegarLoop]: Abstraction has 169088 states and 182205 transitions. [2018-07-22 12:33:07,509 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 12:33:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 169088 states and 182205 transitions. [2018-07-22 12:33:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-07-22 12:33:07,525 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:33:07,526 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-07-22 12:33:07,526 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:33:07,526 INFO L82 PathProgramCache]: Analyzing trace with hash -397847808, now seen corresponding path program 1 times [2018-07-22 12:33:07,526 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:33:07,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:33:07,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:33:07,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:33:07,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:33:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:33:08,150 WARN L169 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-22 12:33:08,547 WARN L169 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 27 [2018-07-22 12:33:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 565 proven. 12 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2018-07-22 12:33:08,751 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 12:33:08,752 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 12:33:08,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:33:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:33:12,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 12:33:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2018-07-22 12:33:12,807 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 12:33:12,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-07-22 12:33:12,808 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 12:33:12,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 12:33:12,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-22 12:33:12,808 INFO L87 Difference]: Start difference. First operand 169088 states and 182205 transitions. Second operand 6 states. [2018-07-22 12:33:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:33:20,693 INFO L93 Difference]: Finished difference Result 375975 states and 406478 transitions. [2018-07-22 12:33:20,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 12:33:20,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 535 [2018-07-22 12:33:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:33:20,919 INFO L225 Difference]: With dead ends: 375975 [2018-07-22 12:33:20,919 INFO L226 Difference]: Without dead ends: 207674 [2018-07-22 12:33:21,003 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 535 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-07-22 12:33:21,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207674 states. [2018-07-22 12:33:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207674 to 202940. [2018-07-22 12:33:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202940 states. [2018-07-22 12:33:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202940 states to 202940 states and 216058 transitions. [2018-07-22 12:33:24,013 INFO L78 Accepts]: Start accepts. Automaton has 202940 states and 216058 transitions. Word has length 535 [2018-07-22 12:33:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:33:24,013 INFO L471 AbstractCegarLoop]: Abstraction has 202940 states and 216058 transitions. [2018-07-22 12:33:24,014 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 12:33:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 202940 states and 216058 transitions. [2018-07-22 12:33:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2018-07-22 12:33:24,030 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:33:24,030 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:33:24,031 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:33:24,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1853938815, now seen corresponding path program 1 times [2018-07-22 12:33:24,031 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:33:24,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:33:24,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:33:24,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:33:24,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:33:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:33:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2018-07-22 12:33:24,913 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:33:24,913 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:33:24,914 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:33:24,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:33:24,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:33:24,915 INFO L87 Difference]: Start difference. First operand 202940 states and 216058 transitions. Second operand 4 states. [2018-07-22 12:33:33,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:33:33,222 INFO L93 Difference]: Finished difference Result 439775 states and 469365 transitions. [2018-07-22 12:33:33,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:33:33,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 625 [2018-07-22 12:33:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:33:33,465 INFO L225 Difference]: With dead ends: 439775 [2018-07-22 12:33:33,466 INFO L226 Difference]: Without dead ends: 237625 [2018-07-22 12:33:33,532 INFO L578 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 [2018-07-22 12:33:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237625 states. [2018-07-22 12:33:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237625 to 229724. [2018-07-22 12:33:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229724 states. [2018-07-22 12:33:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229724 states to 229724 states and 242200 transitions. [2018-07-22 12:33:36,142 INFO L78 Accepts]: Start accepts. Automaton has 229724 states and 242200 transitions. Word has length 625 [2018-07-22 12:33:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:33:36,143 INFO L471 AbstractCegarLoop]: Abstraction has 229724 states and 242200 transitions. [2018-07-22 12:33:36,143 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:33:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 229724 states and 242200 transitions. [2018-07-22 12:33:36,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2018-07-22 12:33:36,911 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:33:36,912 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-22 12:33:36,912 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:33:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash -413290820, now seen corresponding path program 1 times [2018-07-22 12:33:36,912 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:33:36,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:33:36,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:33:36,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:33:36,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:33:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:33:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 1141 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-07-22 12:33:37,549 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:33:37,549 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:33:37,549 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:33:37,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:33:37,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:33:37,549 INFO L87 Difference]: Start difference. First operand 229724 states and 242200 transitions. Second operand 4 states. [2018-07-22 12:33:49,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:33:49,920 INFO L93 Difference]: Finished difference Result 491093 states and 518237 transitions. [2018-07-22 12:33:49,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:33:49,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 722 [2018-07-22 12:33:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:33:50,200 INFO L225 Difference]: With dead ends: 491093 [2018-07-22 12:33:50,200 INFO L226 Difference]: Without dead ends: 262159 [2018-07-22 12:33:50,288 INFO L578 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 [2018-07-22 12:33:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262159 states. [2018-07-22 12:33:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262159 to 254149. [2018-07-22 12:33:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254149 states. [2018-07-22 12:33:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254149 states to 254149 states and 268189 transitions. [2018-07-22 12:33:53,210 INFO L78 Accepts]: Start accepts. Automaton has 254149 states and 268189 transitions. Word has length 722 [2018-07-22 12:33:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:33:53,211 INFO L471 AbstractCegarLoop]: Abstraction has 254149 states and 268189 transitions. [2018-07-22 12:33:53,211 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:33:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 254149 states and 268189 transitions. [2018-07-22 12:33:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1199 [2018-07-22 12:33:53,336 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:33:53,337 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:33:53,337 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:33:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1646849159, now seen corresponding path program 1 times [2018-07-22 12:33:53,338 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:33:53,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:33:53,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:33:53,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:33:53,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:33:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:33:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 813 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-07-22 12:33:58,420 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:33:58,420 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:33:58,421 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:33:58,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:33:58,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:33:58,423 INFO L87 Difference]: Start difference. First operand 254149 states and 268189 transitions. Second operand 4 states. [2018-07-22 12:34:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:34:05,395 INFO L93 Difference]: Finished difference Result 505952 states and 533986 transitions. [2018-07-22 12:34:05,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:34:05,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1198 [2018-07-22 12:34:05,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:34:05,658 INFO L225 Difference]: With dead ends: 505952 [2018-07-22 12:34:05,658 INFO L226 Difference]: Without dead ends: 252593 [2018-07-22 12:34:05,744 INFO L578 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 [2018-07-22 12:34:05,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252593 states. [2018-07-22 12:34:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252593 to 247838. [2018-07-22 12:34:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247838 states. [2018-07-22 12:34:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247838 states to 247838 states and 257905 transitions. [2018-07-22 12:34:08,830 INFO L78 Accepts]: Start accepts. Automaton has 247838 states and 257905 transitions. Word has length 1198 [2018-07-22 12:34:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:34:08,849 INFO L471 AbstractCegarLoop]: Abstraction has 247838 states and 257905 transitions. [2018-07-22 12:34:08,849 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 12:34:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 247838 states and 257905 transitions. [2018-07-22 12:34:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1461 [2018-07-22 12:34:08,996 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:34:08,997 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:34:08,997 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:34:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash 874252850, now seen corresponding path program 1 times [2018-07-22 12:34:08,997 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:34:08,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:34:08,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:34:08,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:34:08,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:34:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:34:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 1358 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2018-07-22 12:34:14,734 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:34:14,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 12:34:14,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 12:34:14,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 12:34:14,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 12:34:14,736 INFO L87 Difference]: Start difference. First operand 247838 states and 257905 transitions. Second operand 3 states. [2018-07-22 12:34:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:34:21,416 INFO L93 Difference]: Finished difference Result 537504 states and 559025 transitions. [2018-07-22 12:34:21,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 12:34:21,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1460 [2018-07-22 12:34:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 12:34:21,724 INFO L225 Difference]: With dead ends: 537504 [2018-07-22 12:34:21,725 INFO L226 Difference]: Without dead ends: 290456 [2018-07-22 12:34:21,821 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 12:34:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290456 states. [2018-07-22 12:34:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290456 to 271474. [2018-07-22 12:34:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271474 states. [2018-07-22 12:34:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271474 states to 271474 states and 282078 transitions. [2018-07-22 12:34:25,389 INFO L78 Accepts]: Start accepts. Automaton has 271474 states and 282078 transitions. Word has length 1460 [2018-07-22 12:34:25,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 12:34:25,428 INFO L471 AbstractCegarLoop]: Abstraction has 271474 states and 282078 transitions. [2018-07-22 12:34:25,428 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 12:34:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 271474 states and 282078 transitions. [2018-07-22 12:34:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1466 [2018-07-22 12:34:25,558 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 12:34:25,558 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 12:34:25,559 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 12:34:25,559 INFO L82 PathProgramCache]: Analyzing trace with hash -636972067, now seen corresponding path program 1 times [2018-07-22 12:34:25,559 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 12:34:25,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 12:34:25,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:34:25,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 12:34:25,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 12:34:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 12:34:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 1326 proven. 0 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2018-07-22 12:34:31,538 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 12:34:31,538 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 12:34:31,539 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 12:34:31,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 12:34:31,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:34:31,539 INFO L87 Difference]: Start difference. First operand 271474 states and 282078 transitions. Second operand 4 states. [2018-07-22 12:34:38,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 12:34:38,089 INFO L93 Difference]: Finished difference Result 534245 states and 555181 transitions. [2018-07-22 12:34:38,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 12:34:38,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1465 [2018-07-22 12:34:38,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-07-22 12:34:38,379 INFO L225 Difference]: With dead ends: 534245 [2018-07-22 12:34:38,379 INFO L226 Difference]: Without dead ends: 262772 [2018-07-22 12:34:38,427 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 12:34:38,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262772 states. [2018-07-22 12:34:38,578 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 12:34:38,582 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 12:34:38,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 12:34:38 BoogieIcfgContainer [2018-07-22 12:34:38,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 12:34:38,583 INFO L168 Benchmark]: Toolchain (without parser) took 215898.49 ms. Allocated memory was 310.4 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 237.2 MB in the beginning and 2.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.0 GB. Max. memory is 5.3 GB. [2018-07-22 12:34:38,584 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 310.4 MB. Free memory is still 275.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 12:34:38,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3089.18 ms. Allocated memory was 310.4 MB in the beginning and 378.0 MB in the end (delta: 67.6 MB). Free memory was 237.2 MB in the beginning and 174.7 MB in the end (delta: 62.5 MB). Peak memory consumption was 130.2 MB. Max. memory is 5.3 GB. [2018-07-22 12:34:38,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 797.42 ms. Allocated memory was 378.0 MB in the beginning and 394.3 MB in the end (delta: 16.3 MB). Free memory was 174.7 MB in the beginning and 179.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 72.1 MB. Max. memory is 5.3 GB. [2018-07-22 12:34:38,587 INFO L168 Benchmark]: Boogie Preprocessor took 1861.51 ms. Allocated memory was 394.3 MB in the beginning and 733.0 MB in the end (delta: 338.7 MB). Free memory was 179.2 MB in the beginning and 550.1 MB in the end (delta: -371.0 MB). Peak memory consumption was 128.0 MB. Max. memory is 5.3 GB. [2018-07-22 12:34:38,588 INFO L168 Benchmark]: RCFGBuilder took 11722.00 ms. Allocated memory was 733.0 MB in the beginning and 957.3 MB in the end (delta: 224.4 MB). Free memory was 550.1 MB in the beginning and 518.4 MB in the end (delta: 31.8 MB). Peak memory consumption was 294.5 MB. Max. memory is 5.3 GB. [2018-07-22 12:34:38,588 INFO L168 Benchmark]: TraceAbstraction took 198415.50 ms. Allocated memory was 957.3 MB in the beginning and 3.3 GB in the end (delta: 2.3 GB). Free memory was 518.1 MB in the beginning and 2.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. [2018-07-22 12:34:38,595 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 310.4 MB. Free memory is still 275.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 3089.18 ms. Allocated memory was 310.4 MB in the beginning and 378.0 MB in the end (delta: 67.6 MB). Free memory was 237.2 MB in the beginning and 174.7 MB in the end (delta: 62.5 MB). Peak memory consumption was 130.2 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 797.42 ms. Allocated memory was 378.0 MB in the beginning and 394.3 MB in the end (delta: 16.3 MB). Free memory was 174.7 MB in the beginning and 179.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 72.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1861.51 ms. Allocated memory was 394.3 MB in the beginning and 733.0 MB in the end (delta: 338.7 MB). Free memory was 179.2 MB in the beginning and 550.1 MB in the end (delta: -371.0 MB). Peak memory consumption was 128.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 11722.00 ms. Allocated memory was 733.0 MB in the beginning and 957.3 MB in the end (delta: 224.4 MB). Free memory was 550.1 MB in the beginning and 518.4 MB in the end (delta: 31.8 MB). Peak memory consumption was 294.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 198415.50 ms. Allocated memory was 957.3 MB in the beginning and 3.3 GB in the end (delta: 2.3 GB). Free memory was 518.1 MB in the beginning and 2.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.7 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 198.3s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 146.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9766 SDtfs, 39761 SDslu, 3487 SDs, 0 SdLazy, 73295 SolverSat, 16987 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 113.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1024 GetRequests, 974 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271474occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 76324 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 9238 NumberOfCodeBlocks, 9238 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 9220 ConstructedInterpolants, 0 QuantifiedInterpolants, 13109229 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1286 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 12420/12501 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label26_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_12-34-38-608.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label26_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_12-34-38-608.csv Completed graceful shutdown