java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label11_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:09:11,480 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:09:11,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:09:11,496 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:09:11,496 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:09:11,498 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:09:11,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:09:11,501 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:09:11,502 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:09:11,503 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:09:11,504 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:09:11,505 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:09:11,505 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:09:11,506 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:09:11,507 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:09:11,508 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:09:11,509 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:09:11,511 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:09:11,512 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:09:11,514 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:09:11,515 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:09:11,516 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:09:11,518 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:09:11,518 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:09:11,519 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:09:11,519 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:09:11,520 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:09:11,521 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:09:11,522 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:09:11,523 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:09:11,523 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:09:11,524 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:09:11,526 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:09:11,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:09:11,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:09:11,547 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:09:11,548 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:09:11,548 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:09:11,548 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:09:11,549 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:09:11,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:09:11,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:09:11,550 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:09:11,550 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:09:11,550 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:09:11,551 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:09:11,551 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:09:11,551 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:09:11,551 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:09:11,551 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:09:11,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:09:11,553 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:09:11,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:09:11,553 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:09:11,553 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:09:11,554 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:09:11,554 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:09:11,554 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:09:11,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:09:11,555 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:09:11,555 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:09:11,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:09:11,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:09:11,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:09:11,641 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:09:11,641 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:09:11,642 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label11_false-unreach-call.c [2018-11-06 19:09:11,709 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f031c5ac/40f918c9246848a2a47635d2ed897504/FLAG053fab1c7 [2018-11-06 19:09:12,508 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:09:12,509 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label11_false-unreach-call.c [2018-11-06 19:09:12,543 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f031c5ac/40f918c9246848a2a47635d2ed897504/FLAG053fab1c7 [2018-11-06 19:09:12,565 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f031c5ac/40f918c9246848a2a47635d2ed897504 [2018-11-06 19:09:12,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:09:12,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:09:12,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:09:12,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:09:12,585 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:09:12,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:09:12" (1/1) ... [2018-11-06 19:09:12,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:12, skipping insertion in model container [2018-11-06 19:09:12,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:09:12" (1/1) ... [2018-11-06 19:09:12,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:09:12,798 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:09:14,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:09:14,291 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:09:15,055 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:09:15,094 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:09:15,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15 WrapperNode [2018-11-06 19:09:15,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:09:15,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:09:15,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:09:15,097 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:09:15,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:15,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:15,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:09:15,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:09:15,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:09:15,845 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:09:15,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:15,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:15,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:15,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:16,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:16,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:16,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... [2018-11-06 19:09:16,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:09:16,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:09:16,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:09:16,397 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:09:16,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:09:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:09:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:09:16,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:09:29,922 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:09:29,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:09:29 BoogieIcfgContainer [2018-11-06 19:09:29,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:09:29,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:09:29,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:09:29,928 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:09:29,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:09:12" (1/3) ... [2018-11-06 19:09:29,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753e00e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:09:29, skipping insertion in model container [2018-11-06 19:09:29,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:09:15" (2/3) ... [2018-11-06 19:09:29,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753e00e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:09:29, skipping insertion in model container [2018-11-06 19:09:29,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:09:29" (3/3) ... [2018-11-06 19:09:29,933 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label11_false-unreach-call.c [2018-11-06 19:09:29,944 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:09:29,958 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:09:29,976 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:09:30,026 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:09:30,027 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:09:30,027 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:09:30,027 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:09:30,027 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:09:30,027 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:09:30,027 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:09:30,028 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:09:30,028 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:09:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-11-06 19:09:30,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-06 19:09:30,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:30,075 INFO L375 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] [2018-11-06 19:09:30,078 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:30,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:30,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1740446778, now seen corresponding path program 1 times [2018-11-06 19:09:30,086 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:30,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:30,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:30,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:30,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:09:30,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:30,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:09:30,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:30,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:30,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:30,562 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-11-06 19:09:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:43,021 INFO L93 Difference]: Finished difference Result 3973 states and 7416 transitions. [2018-11-06 19:09:43,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:09:43,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-06 19:09:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:43,066 INFO L225 Difference]: With dead ends: 3973 [2018-11-06 19:09:43,066 INFO L226 Difference]: Without dead ends: 2867 [2018-11-06 19:09:43,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2018-11-06 19:09:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 1938. [2018-11-06 19:09:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2018-11-06 19:09:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 3240 transitions. [2018-11-06 19:09:43,229 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 3240 transitions. Word has length 27 [2018-11-06 19:09:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:43,230 INFO L480 AbstractCegarLoop]: Abstraction has 1938 states and 3240 transitions. [2018-11-06 19:09:43,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 3240 transitions. [2018-11-06 19:09:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-06 19:09:43,236 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:43,238 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:43,238 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:43,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1230589024, now seen corresponding path program 1 times [2018-11-06 19:09:43,239 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:43,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:43,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:43,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:43,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:09:43,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:43,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:09:43,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:43,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:43,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:43,522 INFO L87 Difference]: Start difference. First operand 1938 states and 3240 transitions. Second operand 4 states. [2018-11-06 19:09:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:55,027 INFO L93 Difference]: Finished difference Result 7100 states and 12101 transitions. [2018-11-06 19:09:55,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:09:55,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-11-06 19:09:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:55,059 INFO L225 Difference]: With dead ends: 7100 [2018-11-06 19:09:55,060 INFO L226 Difference]: Without dead ends: 5164 [2018-11-06 19:09:55,066 INFO L604 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 [2018-11-06 19:09:55,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2018-11-06 19:09:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 3540. [2018-11-06 19:09:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2018-11-06 19:09:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 5445 transitions. [2018-11-06 19:09:55,153 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 5445 transitions. Word has length 99 [2018-11-06 19:09:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:55,154 INFO L480 AbstractCegarLoop]: Abstraction has 3540 states and 5445 transitions. [2018-11-06 19:09:55,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 5445 transitions. [2018-11-06 19:09:55,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-06 19:09:55,159 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:55,160 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:55,160 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:55,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -374902493, now seen corresponding path program 1 times [2018-11-06 19:09:55,161 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:55,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:55,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:55,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:55,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:09:55,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:55,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:09:55,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:55,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:55,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:55,345 INFO L87 Difference]: Start difference. First operand 3540 states and 5445 transitions. Second operand 4 states. [2018-11-06 19:10:07,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:07,509 INFO L93 Difference]: Finished difference Result 13554 states and 21081 transitions. [2018-11-06 19:10:07,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:10:07,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-11-06 19:10:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:07,557 INFO L225 Difference]: With dead ends: 13554 [2018-11-06 19:10:07,558 INFO L226 Difference]: Without dead ends: 10016 [2018-11-06 19:10:07,566 INFO L604 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 [2018-11-06 19:10:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10016 states. [2018-11-06 19:10:07,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10016 to 6718. [2018-11-06 19:10:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6718 states. [2018-11-06 19:10:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 9885 transitions. [2018-11-06 19:10:07,714 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 9885 transitions. Word has length 113 [2018-11-06 19:10:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:07,715 INFO L480 AbstractCegarLoop]: Abstraction has 6718 states and 9885 transitions. [2018-11-06 19:10:07,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:10:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 9885 transitions. [2018-11-06 19:10:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-06 19:10:07,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:07,723 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:07,727 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:07,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:07,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1130372016, now seen corresponding path program 1 times [2018-11-06 19:10:07,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:07,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:07,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:07,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:07,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:10:08,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:08,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:10:08,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:10:08,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:10:08,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:08,098 INFO L87 Difference]: Start difference. First operand 6718 states and 9885 transitions. Second operand 4 states. [2018-11-06 19:10:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:22,441 INFO L93 Difference]: Finished difference Result 23854 states and 35012 transitions. [2018-11-06 19:10:22,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:10:22,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2018-11-06 19:10:22,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:22,499 INFO L225 Difference]: With dead ends: 23854 [2018-11-06 19:10:22,500 INFO L226 Difference]: Without dead ends: 17138 [2018-11-06 19:10:22,516 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2018-11-06 19:10:22,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 13037. [2018-11-06 19:10:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13037 states. [2018-11-06 19:10:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13037 states to 13037 states and 18976 transitions. [2018-11-06 19:10:22,761 INFO L78 Accepts]: Start accepts. Automaton has 13037 states and 18976 transitions. Word has length 131 [2018-11-06 19:10:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:22,762 INFO L480 AbstractCegarLoop]: Abstraction has 13037 states and 18976 transitions. [2018-11-06 19:10:22,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:10:22,762 INFO L276 IsEmpty]: Start isEmpty. Operand 13037 states and 18976 transitions. [2018-11-06 19:10:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-06 19:10:22,766 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:22,766 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:22,766 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:22,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:22,767 INFO L82 PathProgramCache]: Analyzing trace with hash -563174204, now seen corresponding path program 1 times [2018-11-06 19:10:22,767 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:22,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:22,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:22,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:22,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:23,279 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 11 [2018-11-06 19:10:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:10:23,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:23,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:10:23,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:10:23,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:10:23,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:10:23,325 INFO L87 Difference]: Start difference. First operand 13037 states and 18976 transitions. Second operand 6 states. [2018-11-06 19:10:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:40,400 INFO L93 Difference]: Finished difference Result 41151 states and 59128 transitions. [2018-11-06 19:10:40,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:10:40,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-06 19:10:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:40,457 INFO L225 Difference]: With dead ends: 41151 [2018-11-06 19:10:40,457 INFO L226 Difference]: Without dead ends: 28116 [2018-11-06 19:10:40,472 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:10:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28116 states. [2018-11-06 19:10:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28116 to 27248. [2018-11-06 19:10:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27248 states. [2018-11-06 19:10:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27248 states to 27248 states and 35784 transitions. [2018-11-06 19:10:40,833 INFO L78 Accepts]: Start accepts. Automaton has 27248 states and 35784 transitions. Word has length 139 [2018-11-06 19:10:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:40,833 INFO L480 AbstractCegarLoop]: Abstraction has 27248 states and 35784 transitions. [2018-11-06 19:10:40,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:10:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 27248 states and 35784 transitions. [2018-11-06 19:10:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-06 19:10:40,836 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:40,836 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:40,838 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:40,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:40,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1293456882, now seen corresponding path program 1 times [2018-11-06 19:10:40,838 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:40,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:40,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:40,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:40,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-06 19:10:41,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:10:41,085 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:10:41,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:41,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:10:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-06 19:10:41,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:10:41,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 19:10:41,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:10:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:10:41,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:10:41,317 INFO L87 Difference]: Start difference. First operand 27248 states and 35784 transitions. Second operand 5 states. [2018-11-06 19:10:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:52,878 INFO L93 Difference]: Finished difference Result 82903 states and 112809 transitions. [2018-11-06 19:10:52,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:10:52,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2018-11-06 19:10:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:52,988 INFO L225 Difference]: With dead ends: 82903 [2018-11-06 19:10:52,989 INFO L226 Difference]: Without dead ends: 55657 [2018-11-06 19:10:53,025 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:10:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55657 states. [2018-11-06 19:10:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55657 to 55618. [2018-11-06 19:10:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55618 states. [2018-11-06 19:10:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55618 states to 55618 states and 71686 transitions. [2018-11-06 19:10:53,912 INFO L78 Accepts]: Start accepts. Automaton has 55618 states and 71686 transitions. Word has length 153 [2018-11-06 19:10:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:53,912 INFO L480 AbstractCegarLoop]: Abstraction has 55618 states and 71686 transitions. [2018-11-06 19:10:53,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:10:53,913 INFO L276 IsEmpty]: Start isEmpty. Operand 55618 states and 71686 transitions. [2018-11-06 19:10:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-11-06 19:10:53,923 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:53,923 INFO L375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:10:53,924 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:53,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:53,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1684085742, now seen corresponding path program 1 times [2018-11-06 19:10:53,925 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:53,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:53,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:53,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:53,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:10:54,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:54,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:10:54,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:10:54,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:10:54,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:10:54,199 INFO L87 Difference]: Start difference. First operand 55618 states and 71686 transitions. Second operand 3 states. [2018-11-06 19:11:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:11:00,079 INFO L93 Difference]: Finished difference Result 111218 states and 143356 transitions. [2018-11-06 19:11:00,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:11:00,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2018-11-06 19:11:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:11:00,189 INFO L225 Difference]: With dead ends: 111218 [2018-11-06 19:11:00,189 INFO L226 Difference]: Without dead ends: 55602 [2018-11-06 19:11:00,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:11:00,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55602 states. [2018-11-06 19:11:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55602 to 55598. [2018-11-06 19:11:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55598 states. [2018-11-06 19:11:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55598 states to 55598 states and 66522 transitions. [2018-11-06 19:11:00,936 INFO L78 Accepts]: Start accepts. Automaton has 55598 states and 66522 transitions. Word has length 291 [2018-11-06 19:11:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:11:00,936 INFO L480 AbstractCegarLoop]: Abstraction has 55598 states and 66522 transitions. [2018-11-06 19:11:00,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:11:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 55598 states and 66522 transitions. [2018-11-06 19:11:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-06 19:11:00,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:11:00,953 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:11:00,953 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:11:00,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:11:00,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1676387808, now seen corresponding path program 1 times [2018-11-06 19:11:00,954 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:11:00,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:11:00,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:00,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:11:00,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:11:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-06 19:11:01,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:11:01,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:11:01,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:11:01,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:11:01,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:11:01,430 INFO L87 Difference]: Start difference. First operand 55598 states and 66522 transitions. Second operand 5 states. [2018-11-06 19:11:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:11:19,591 INFO L93 Difference]: Finished difference Result 150115 states and 180029 transitions. [2018-11-06 19:11:19,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:11:19,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2018-11-06 19:11:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:11:19,702 INFO L225 Difference]: With dead ends: 150115 [2018-11-06 19:11:19,702 INFO L226 Difference]: Without dead ends: 95308 [2018-11-06 19:11:19,739 INFO L604 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 [2018-11-06 19:11:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95308 states. [2018-11-06 19:11:20,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95308 to 95109. [2018-11-06 19:11:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95109 states. [2018-11-06 19:11:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95109 states to 95109 states and 111969 transitions. [2018-11-06 19:11:20,839 INFO L78 Accepts]: Start accepts. Automaton has 95109 states and 111969 transitions. Word has length 313 [2018-11-06 19:11:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:11:20,839 INFO L480 AbstractCegarLoop]: Abstraction has 95109 states and 111969 transitions. [2018-11-06 19:11:20,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:11:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 95109 states and 111969 transitions. [2018-11-06 19:11:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-11-06 19:11:20,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:11:20,859 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:11:20,859 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:11:20,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:11:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1147596034, now seen corresponding path program 1 times [2018-11-06 19:11:20,860 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:11:20,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:11:20,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:20,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:11:20,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:11:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 220 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-11-06 19:11:21,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:11:21,148 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:11:21,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:11:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:11:21,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:11:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-06 19:11:21,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:11:21,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:11:21,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:11:21,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:11:21,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:11:21,363 INFO L87 Difference]: Start difference. First operand 95109 states and 111969 transitions. Second operand 4 states. [2018-11-06 19:11:31,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:11:31,067 INFO L93 Difference]: Finished difference Result 289559 states and 339802 transitions. [2018-11-06 19:11:31,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:11:31,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 360 [2018-11-06 19:11:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:11:31,348 INFO L225 Difference]: With dead ends: 289559 [2018-11-06 19:11:31,349 INFO L226 Difference]: Without dead ends: 194452 [2018-11-06 19:11:31,445 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:11:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194452 states. [2018-11-06 19:11:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194452 to 157355. [2018-11-06 19:11:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157355 states. [2018-11-06 19:11:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157355 states to 157355 states and 180738 transitions. [2018-11-06 19:11:34,573 INFO L78 Accepts]: Start accepts. Automaton has 157355 states and 180738 transitions. Word has length 360 [2018-11-06 19:11:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:11:34,574 INFO L480 AbstractCegarLoop]: Abstraction has 157355 states and 180738 transitions. [2018-11-06 19:11:34,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:11:34,574 INFO L276 IsEmpty]: Start isEmpty. Operand 157355 states and 180738 transitions. [2018-11-06 19:11:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-06 19:11:34,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:11:34,587 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:11:34,587 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:11:34,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:11:34,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1391742265, now seen corresponding path program 1 times [2018-11-06 19:11:34,588 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:11:34,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:11:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:34,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:11:34,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:11:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-11-06 19:11:34,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:11:34,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 19:11:34,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:11:34,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:11:34,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:11:34,866 INFO L87 Difference]: Start difference. First operand 157355 states and 180738 transitions. Second operand 3 states. [2018-11-06 19:11:41,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:11:41,578 INFO L93 Difference]: Finished difference Result 410049 states and 468952 transitions. [2018-11-06 19:11:41,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:11:41,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 362 [2018-11-06 19:11:41,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:11:41,897 INFO L225 Difference]: With dead ends: 410049 [2018-11-06 19:11:41,897 INFO L226 Difference]: Without dead ends: 239261 [2018-11-06 19:11:42,025 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:11:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239261 states. [2018-11-06 19:11:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239261 to 229788. [2018-11-06 19:11:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229788 states. [2018-11-06 19:11:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229788 states to 229788 states and 253351 transitions. [2018-11-06 19:11:45,302 INFO L78 Accepts]: Start accepts. Automaton has 229788 states and 253351 transitions. Word has length 362 [2018-11-06 19:11:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:11:45,303 INFO L480 AbstractCegarLoop]: Abstraction has 229788 states and 253351 transitions. [2018-11-06 19:11:45,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:11:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 229788 states and 253351 transitions. [2018-11-06 19:11:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-11-06 19:11:45,315 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:11:45,316 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:11:45,316 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:11:45,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:11:45,316 INFO L82 PathProgramCache]: Analyzing trace with hash 752937186, now seen corresponding path program 1 times [2018-11-06 19:11:45,316 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:11:45,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:11:45,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:45,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:11:45,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:11:45,784 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 19:11:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-06 19:11:45,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:11:45,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:11:45,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:11:45,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:11:45,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:11:45,982 INFO L87 Difference]: Start difference. First operand 229788 states and 253351 transitions. Second operand 4 states. [2018-11-06 19:11:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:11:55,318 INFO L93 Difference]: Finished difference Result 467456 states and 514905 transitions. [2018-11-06 19:11:55,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:11:55,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 408 [2018-11-06 19:11:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:11:55,581 INFO L225 Difference]: With dead ends: 467456 [2018-11-06 19:11:55,582 INFO L226 Difference]: Without dead ends: 221863 [2018-11-06 19:11:55,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:11:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221863 states. [2018-11-06 19:11:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221863 to 211614. [2018-11-06 19:11:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211614 states. [2018-11-06 19:11:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211614 states to 211614 states and 231477 transitions. [2018-11-06 19:11:59,063 INFO L78 Accepts]: Start accepts. Automaton has 211614 states and 231477 transitions. Word has length 408 [2018-11-06 19:11:59,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:11:59,063 INFO L480 AbstractCegarLoop]: Abstraction has 211614 states and 231477 transitions. [2018-11-06 19:11:59,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:11:59,063 INFO L276 IsEmpty]: Start isEmpty. Operand 211614 states and 231477 transitions. [2018-11-06 19:11:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-11-06 19:11:59,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:11:59,071 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:11:59,071 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:11:59,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:11:59,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1170904145, now seen corresponding path program 1 times [2018-11-06 19:11:59,071 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:11:59,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:11:59,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:59,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:11:59,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:11:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:11:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-06 19:11:59,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:11:59,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:11:59,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:11:59,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:11:59,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:11:59,603 INFO L87 Difference]: Start difference. First operand 211614 states and 231477 transitions. Second operand 4 states. [2018-11-06 19:12:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:12:15,548 INFO L93 Difference]: Finished difference Result 484735 states and 530963 transitions. [2018-11-06 19:12:15,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:12:15,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 417 [2018-11-06 19:12:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:12:15,869 INFO L225 Difference]: With dead ends: 484735 [2018-11-06 19:12:15,869 INFO L226 Difference]: Without dead ends: 272331 [2018-11-06 19:12:15,970 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:12:16,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272331 states. [2018-11-06 19:12:19,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272331 to 260456. [2018-11-06 19:12:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260456 states. [2018-11-06 19:12:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260456 states to 260456 states and 280725 transitions. [2018-11-06 19:12:19,288 INFO L78 Accepts]: Start accepts. Automaton has 260456 states and 280725 transitions. Word has length 417 [2018-11-06 19:12:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:12:19,288 INFO L480 AbstractCegarLoop]: Abstraction has 260456 states and 280725 transitions. [2018-11-06 19:12:19,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:12:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 260456 states and 280725 transitions. [2018-11-06 19:12:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-11-06 19:12:19,297 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:12:19,298 INFO L375 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 19:12:19,298 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:12:19,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:12:19,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1434245760, now seen corresponding path program 1 times [2018-11-06 19:12:19,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:12:19,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:12:19,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:12:19,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:12:19,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:12:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:12:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 891 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-11-06 19:12:19,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:12:19,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 19:12:19,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:12:19,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:12:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:12:19,786 INFO L87 Difference]: Start difference. First operand 260456 states and 280725 transitions. Second operand 3 states. [2018-11-06 19:12:24,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:12:24,410 INFO L93 Difference]: Finished difference Result 516166 states and 556078 transitions. [2018-11-06 19:12:24,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:12:24,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 517 [2018-11-06 19:12:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:12:25,641 INFO L225 Difference]: With dead ends: 516166 [2018-11-06 19:12:25,641 INFO L226 Difference]: Without dead ends: 255709 [2018-11-06 19:12:25,736 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:12:25,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255709 states. [2018-11-06 19:12:28,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255709 to 255708. [2018-11-06 19:12:28,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255708 states. [2018-11-06 19:12:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255708 states to 255708 states and 275268 transitions. [2018-11-06 19:12:28,530 INFO L78 Accepts]: Start accepts. Automaton has 255708 states and 275268 transitions. Word has length 517 [2018-11-06 19:12:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:12:28,530 INFO L480 AbstractCegarLoop]: Abstraction has 255708 states and 275268 transitions. [2018-11-06 19:12:28,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:12:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 255708 states and 275268 transitions. [2018-11-06 19:12:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2018-11-06 19:12:28,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:12:28,543 INFO L375 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 19:12:28,544 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:12:28,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:12:28,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1893246007, now seen corresponding path program 1 times [2018-11-06 19:12:28,544 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:12:28,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:12:28,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:12:28,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:12:28,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:12:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:12:29,033 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 19:12:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 785 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-11-06 19:12:29,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:12:29,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:12:29,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:12:29,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:12:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:12:29,777 INFO L87 Difference]: Start difference. First operand 255708 states and 275268 transitions. Second operand 4 states. [2018-11-06 19:12:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:12:38,827 INFO L93 Difference]: Finished difference Result 511434 states and 550484 transitions. [2018-11-06 19:12:38,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:12:38,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 521 [2018-11-06 19:12:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:12:39,134 INFO L225 Difference]: With dead ends: 511434 [2018-11-06 19:12:39,135 INFO L226 Difference]: Without dead ends: 255728 [2018-11-06 19:12:39,255 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:12:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255728 states. [2018-11-06 19:12:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255728 to 241516. [2018-11-06 19:12:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241516 states. [2018-11-06 19:12:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241516 states to 241516 states and 257036 transitions. [2018-11-06 19:12:42,795 INFO L78 Accepts]: Start accepts. Automaton has 241516 states and 257036 transitions. Word has length 521 [2018-11-06 19:12:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:12:42,796 INFO L480 AbstractCegarLoop]: Abstraction has 241516 states and 257036 transitions. [2018-11-06 19:12:42,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:12:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 241516 states and 257036 transitions. [2018-11-06 19:12:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-11-06 19:12:42,804 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:12:42,804 INFO L375 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:12:42,804 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:12:42,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:12:42,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1310468355, now seen corresponding path program 1 times [2018-11-06 19:12:42,805 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:12:42,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:12:42,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:12:42,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:12:42,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:12:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:12:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 755 proven. 10 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2018-11-06 19:12:43,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:12:43,395 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:12:43,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:12:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:12:43,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:12:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2018-11-06 19:12:47,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:12:47,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:12:47,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:12:47,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:12:47,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:12:47,825 INFO L87 Difference]: Start difference. First operand 241516 states and 257036 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 19:12:53,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:12:53,152 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:12:53,157 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:12:53,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:12:53 BoogieIcfgContainer [2018-11-06 19:12:53,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:12:53,159 INFO L168 Benchmark]: Toolchain (without parser) took 220581.21 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-06 19:12:53,160 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:12:53,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2515.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:12:53,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 746.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:12:53,162 INFO L168 Benchmark]: Boogie Preprocessor took 551.66 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:12:53,163 INFO L168 Benchmark]: RCFGBuilder took 13526.97 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 230.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 50.3 MB). Peak memory consumption was 573.1 MB. Max. memory is 7.1 GB. [2018-11-06 19:12:53,164 INFO L168 Benchmark]: TraceAbstraction took 203234.03 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-06 19:12:53,169 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2515.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 746.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 551.66 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13526.97 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 230.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 50.3 MB). Peak memory consumption was 573.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203234.03 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (241516states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (175963 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 203.1s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 167.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12402 SDtfs, 28724 SDslu, 4104 SDs, 0 SdLazy, 73691 SolverSat, 15124 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 132.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1137 GetRequests, 1096 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=260456occurred in iteration=12, 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: 23.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 93969 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 5500 NumberOfCodeBlocks, 5500 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5482 ConstructedInterpolants, 0 QuantifiedInterpolants, 4943240 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1481 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 7043/7063 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown