java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:28:59,395 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:28:59,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:28:59,412 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:28:59,413 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:28:59,414 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:28:59,415 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:28:59,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:28:59,421 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:28:59,424 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:28:59,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:28:59,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:28:59,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:28:59,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:28:59,429 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:28:59,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:28:59,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:28:59,433 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:28:59,435 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:28:59,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:28:59,437 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:28:59,439 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:28:59,441 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:28:59,441 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:28:59,442 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:28:59,443 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:28:59,444 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:28:59,444 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:28:59,445 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:28:59,447 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:28:59,447 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:28:59,448 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:28:59,450 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:28:59,473 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:28:59,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:28:59,475 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:28:59,475 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:28:59,476 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:28:59,476 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:28:59,476 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:28:59,477 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:28:59,477 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:28:59,477 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:28:59,477 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:28:59,477 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:28:59,478 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:28:59,481 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:28:59,482 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:28:59,482 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:28:59,482 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:28:59,482 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:28:59,482 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:28:59,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:28:59,483 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:28:59,483 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:28:59,483 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:28:59,483 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:28:59,484 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:28:59,485 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:28:59,485 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:28:59,485 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:28:59,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:28:59,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:28:59,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:28:59,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:28:59,559 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:28:59,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label20_false-unreach-call.c [2018-10-24 14:28:59,630 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18960a687/7c7d2c060abc4963a5889fd2e5139539/FLAG4064ee52e [2018-10-24 14:29:00,408 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:29:00,409 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label20_false-unreach-call.c [2018-10-24 14:29:00,438 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18960a687/7c7d2c060abc4963a5889fd2e5139539/FLAG4064ee52e [2018-10-24 14:29:00,464 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18960a687/7c7d2c060abc4963a5889fd2e5139539 [2018-10-24 14:29:00,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:29:00,482 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:29:00,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:29:00,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:29:00,491 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:29:00,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:00,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00, skipping insertion in model container [2018-10-24 14:29:00,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:00,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:29:00,643 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:29:01,603 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:29:01,608 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:29:02,011 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:29:02,038 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:29:02,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02 WrapperNode [2018-10-24 14:29:02,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:29:02,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:29:02,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:29:02,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:29:02,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:02,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:02,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:29:02,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:29:02,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:29:02,636 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:29:02,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:02,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:02,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:02,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:02,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:02,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:02,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... [2018-10-24 14:29:03,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:29:03,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:29:03,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:29:03,025 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:29:03,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:29:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:29:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:29:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:29:11,498 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:29:11,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:29:11 BoogieIcfgContainer [2018-10-24 14:29:11,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:29:11,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:29:11,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:29:11,504 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:29:11,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:29:00" (1/3) ... [2018-10-24 14:29:11,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c1c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:29:11, skipping insertion in model container [2018-10-24 14:29:11,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:02" (2/3) ... [2018-10-24 14:29:11,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c1c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:29:11, skipping insertion in model container [2018-10-24 14:29:11,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:29:11" (3/3) ... [2018-10-24 14:29:11,510 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label20_false-unreach-call.c [2018-10-24 14:29:11,520 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:29:11,532 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:29:11,549 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:29:11,590 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:29:11,591 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:29:11,591 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:29:11,591 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:29:11,591 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:29:11,591 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:29:11,592 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:29:11,592 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:29:11,592 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:29:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 14:29:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 14:29:11,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:29:11,632 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] [2018-10-24 14:29:11,634 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:29:11,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:29:11,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1740446778, now seen corresponding path program 1 times [2018-10-24 14:29:11,643 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:29:11,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:29:11,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:11,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:11,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:29:12,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:29:12,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:29:12,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:29:12,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:29:12,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:29:12,072 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 14:29:24,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:29:24,159 INFO L93 Difference]: Finished difference Result 2097 states and 3909 transitions. [2018-10-24 14:29:24,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:29:24,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-24 14:29:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:29:24,194 INFO L225 Difference]: With dead ends: 2097 [2018-10-24 14:29:24,194 INFO L226 Difference]: Without dead ends: 1499 [2018-10-24 14:29:24,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:29:24,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2018-10-24 14:29:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485. [2018-10-24 14:29:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-24 14:29:24,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions. [2018-10-24 14:29:24,327 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 27 [2018-10-24 14:29:24,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:29:24,327 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions. [2018-10-24 14:29:24,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:29:24,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions. [2018-10-24 14:29:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 14:29:24,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:29:24,336 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] [2018-10-24 14:29:24,337 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:29:24,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:29:24,338 INFO L82 PathProgramCache]: Analyzing trace with hash -911219551, now seen corresponding path program 1 times [2018-10-24 14:29:24,338 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:29:24,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:29:24,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:24,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:24,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:29:24,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:29:24,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:29:24,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:29:24,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:29:24,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:29:24,601 INFO L87 Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states. [2018-10-24 14:29:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:29:32,367 INFO L93 Difference]: Finished difference Result 4257 states and 6664 transitions. [2018-10-24 14:29:32,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:29:32,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2018-10-24 14:29:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:29:32,382 INFO L225 Difference]: With dead ends: 4257 [2018-10-24 14:29:32,382 INFO L226 Difference]: Without dead ends: 2774 [2018-10-24 14:29:32,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:29:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2018-10-24 14:29:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2018-10-24 14:29:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2018-10-24 14:29:32,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions. [2018-10-24 14:29:32,460 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 95 [2018-10-24 14:29:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:29:32,460 INFO L481 AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions. [2018-10-24 14:29:32,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:29:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions. [2018-10-24 14:29:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 14:29:32,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:29:32,469 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] [2018-10-24 14:29:32,470 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:29:32,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:29:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash 856980078, now seen corresponding path program 1 times [2018-10-24 14:29:32,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:29:32,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:29:32,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:32,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:32,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:29:32,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:29:32,722 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:29:32,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:32,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:29:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:29:33,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:29:33,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:29:33,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:29:33,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:29:33,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:29:33,032 INFO L87 Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 6 states. [2018-10-24 14:30:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:21,863 INFO L93 Difference]: Finished difference Result 13681 states and 18832 transitions. [2018-10-24 14:30:21,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:30:21,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-24 14:30:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:21,905 INFO L225 Difference]: With dead ends: 13681 [2018-10-24 14:30:21,905 INFO L226 Difference]: Without dead ends: 7021 [2018-10-24 14:30:21,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:30:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7021 states. [2018-10-24 14:30:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7021 to 5307. [2018-10-24 14:30:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5307 states. [2018-10-24 14:30:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 6179 transitions. [2018-10-24 14:30:22,023 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 6179 transitions. Word has length 98 [2018-10-24 14:30:22,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:22,026 INFO L481 AbstractCegarLoop]: Abstraction has 5307 states and 6179 transitions. [2018-10-24 14:30:22,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:30:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 6179 transitions. [2018-10-24 14:30:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 14:30:22,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:22,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:30:22,035 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:22,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:22,036 INFO L82 PathProgramCache]: Analyzing trace with hash 685901422, now seen corresponding path program 1 times [2018-10-24 14:30:22,036 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:22,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:22,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:22,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:22,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:30:22,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:30:22,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:30:22,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:30:22,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:30:22,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:30:22,465 INFO L87 Difference]: Start difference. First operand 5307 states and 6179 transitions. Second operand 4 states. [2018-10-24 14:30:29,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:29,461 INFO L93 Difference]: Finished difference Result 14022 states and 16573 transitions. [2018-10-24 14:30:29,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:30:29,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2018-10-24 14:30:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:29,506 INFO L225 Difference]: With dead ends: 14022 [2018-10-24 14:30:29,506 INFO L226 Difference]: Without dead ends: 9144 [2018-10-24 14:30:29,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:30:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9144 states. [2018-10-24 14:30:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9144 to 8718. [2018-10-24 14:30:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8718 states. [2018-10-24 14:30:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8718 states to 8718 states and 9934 transitions. [2018-10-24 14:30:29,659 INFO L78 Accepts]: Start accepts. Automaton has 8718 states and 9934 transitions. Word has length 208 [2018-10-24 14:30:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:29,659 INFO L481 AbstractCegarLoop]: Abstraction has 8718 states and 9934 transitions. [2018-10-24 14:30:29,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:30:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 8718 states and 9934 transitions. [2018-10-24 14:30:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-24 14:30:29,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:29,669 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, 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] [2018-10-24 14:30:29,669 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:29,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:29,670 INFO L82 PathProgramCache]: Analyzing trace with hash 517448071, now seen corresponding path program 1 times [2018-10-24 14:30:29,670 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:29,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:29,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:29,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:29,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-10-24 14:30:30,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:30:30,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:30:30,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:30:30,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:30:30,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:30:30,084 INFO L87 Difference]: Start difference. First operand 8718 states and 9934 transitions. Second operand 3 states. [2018-10-24 14:30:34,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:34,140 INFO L93 Difference]: Finished difference Result 21274 states and 24561 transitions. [2018-10-24 14:30:34,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:30:34,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 289 [2018-10-24 14:30:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:34,220 INFO L225 Difference]: With dead ends: 21274 [2018-10-24 14:30:34,220 INFO L226 Difference]: Without dead ends: 12985 [2018-10-24 14:30:34,232 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:30:34,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2018-10-24 14:30:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 12979. [2018-10-24 14:30:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12979 states. [2018-10-24 14:30:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12979 states to 12979 states and 14666 transitions. [2018-10-24 14:30:34,474 INFO L78 Accepts]: Start accepts. Automaton has 12979 states and 14666 transitions. Word has length 289 [2018-10-24 14:30:34,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:34,475 INFO L481 AbstractCegarLoop]: Abstraction has 12979 states and 14666 transitions. [2018-10-24 14:30:34,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:30:34,475 INFO L276 IsEmpty]: Start isEmpty. Operand 12979 states and 14666 transitions. [2018-10-24 14:30:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-24 14:30:34,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:34,489 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:30:34,489 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:34,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:34,490 INFO L82 PathProgramCache]: Analyzing trace with hash -679960368, now seen corresponding path program 1 times [2018-10-24 14:30:34,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:34,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:34,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:34,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:34,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 240 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:30:35,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:30:35,118 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:30:35,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:35,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:30:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-24 14:30:35,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:30:35,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-10-24 14:30:35,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:30:35,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:30:35,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:30:35,575 INFO L87 Difference]: Start difference. First operand 12979 states and 14666 transitions. Second operand 7 states. [2018-10-24 14:30:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:43,849 INFO L93 Difference]: Finished difference Result 26413 states and 29899 transitions. [2018-10-24 14:30:43,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:30:43,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2018-10-24 14:30:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:43,876 INFO L225 Difference]: With dead ends: 26413 [2018-10-24 14:30:43,876 INFO L226 Difference]: Without dead ends: 13863 [2018-10-24 14:30:43,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:30:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13863 states. [2018-10-24 14:30:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13863 to 12979. [2018-10-24 14:30:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12979 states. [2018-10-24 14:30:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12979 states to 12979 states and 14666 transitions. [2018-10-24 14:30:44,068 INFO L78 Accepts]: Start accepts. Automaton has 12979 states and 14666 transitions. Word has length 367 [2018-10-24 14:30:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:44,069 INFO L481 AbstractCegarLoop]: Abstraction has 12979 states and 14666 transitions. [2018-10-24 14:30:44,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:30:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 12979 states and 14666 transitions. [2018-10-24 14:30:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-10-24 14:30:44,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:44,088 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:30:44,088 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:44,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:44,089 INFO L82 PathProgramCache]: Analyzing trace with hash -285714055, now seen corresponding path program 1 times [2018-10-24 14:30:44,089 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:44,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:44,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:44,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:44,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-10-24 14:30:44,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:30:44,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:30:44,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:30:44,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:30:44,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:30:44,811 INFO L87 Difference]: Start difference. First operand 12979 states and 14666 transitions. Second operand 3 states. [2018-10-24 14:30:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:48,987 INFO L93 Difference]: Finished difference Result 36623 states and 41425 transitions. [2018-10-24 14:30:48,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:30:48,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 509 [2018-10-24 14:30:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:49,025 INFO L225 Difference]: With dead ends: 36623 [2018-10-24 14:30:49,025 INFO L226 Difference]: Without dead ends: 24073 [2018-10-24 14:30:49,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:30:49,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24073 states. [2018-10-24 14:30:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24073 to 21501. [2018-10-24 14:30:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21501 states. [2018-10-24 14:30:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21501 states to 21501 states and 24365 transitions. [2018-10-24 14:30:49,328 INFO L78 Accepts]: Start accepts. Automaton has 21501 states and 24365 transitions. Word has length 509 [2018-10-24 14:30:49,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:49,329 INFO L481 AbstractCegarLoop]: Abstraction has 21501 states and 24365 transitions. [2018-10-24 14:30:49,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:30:49,329 INFO L276 IsEmpty]: Start isEmpty. Operand 21501 states and 24365 transitions. [2018-10-24 14:30:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2018-10-24 14:30:49,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:49,350 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:30:49,351 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:49,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:49,351 INFO L82 PathProgramCache]: Analyzing trace with hash 641630830, now seen corresponding path program 1 times [2018-10-24 14:30:49,351 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:49,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:49,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:49,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:49,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 83 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-24 14:30:50,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:30:50,105 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:30:50,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:50,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:30:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 83 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-24 14:30:50,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:30:50,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-10-24 14:30:50,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:30:50,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:30:50,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:30:50,929 INFO L87 Difference]: Start difference. First operand 21501 states and 24365 transitions. Second operand 9 states. [2018-10-24 14:30:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:30:59,351 INFO L93 Difference]: Finished difference Result 44707 states and 50514 transitions. [2018-10-24 14:30:59,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:30:59,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 521 [2018-10-24 14:30:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:30:59,386 INFO L225 Difference]: With dead ends: 44707 [2018-10-24 14:30:59,386 INFO L226 Difference]: Without dead ends: 23208 [2018-10-24 14:30:59,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:30:59,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23208 states. [2018-10-24 14:30:59,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23208 to 23204. [2018-10-24 14:30:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23204 states. [2018-10-24 14:30:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23204 states to 23204 states and 26124 transitions. [2018-10-24 14:30:59,656 INFO L78 Accepts]: Start accepts. Automaton has 23204 states and 26124 transitions. Word has length 521 [2018-10-24 14:30:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:30:59,656 INFO L481 AbstractCegarLoop]: Abstraction has 23204 states and 26124 transitions. [2018-10-24 14:30:59,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:30:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 23204 states and 26124 transitions. [2018-10-24 14:30:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-10-24 14:30:59,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:59,685 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:30:59,685 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:59,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash -570165728, now seen corresponding path program 1 times [2018-10-24 14:30:59,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:59,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:59,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:59,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:59,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:00,298 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 14:31:00,528 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-24 14:31:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 258 proven. 83 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-24 14:31:01,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:31:01,677 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:31:01,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:01,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:31:05,078 WARN L179 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 145 DAG size of output: 30 [2018-10-24 14:31:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 74 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:07,025 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:31:07,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-10-24 14:31:07,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 14:31:07,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 14:31:07,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-10-24 14:31:07,027 INFO L87 Difference]: Start difference. First operand 23204 states and 26124 transitions. Second operand 14 states. [2018-10-24 14:31:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:40,294 INFO L93 Difference]: Finished difference Result 55349 states and 61664 transitions. [2018-10-24 14:31:40,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 14:31:40,295 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 541 [2018-10-24 14:31:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:40,328 INFO L225 Difference]: With dead ends: 55349 [2018-10-24 14:31:40,328 INFO L226 Difference]: Without dead ends: 32999 [2018-10-24 14:31:40,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 537 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2018-10-24 14:31:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32999 states. [2018-10-24 14:31:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32999 to 27036. [2018-10-24 14:31:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27036 states. [2018-10-24 14:31:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27036 states to 27036 states and 30093 transitions. [2018-10-24 14:31:40,669 INFO L78 Accepts]: Start accepts. Automaton has 27036 states and 30093 transitions. Word has length 541 [2018-10-24 14:31:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:40,669 INFO L481 AbstractCegarLoop]: Abstraction has 27036 states and 30093 transitions. [2018-10-24 14:31:40,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 14:31:40,670 INFO L276 IsEmpty]: Start isEmpty. Operand 27036 states and 30093 transitions. [2018-10-24 14:31:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-10-24 14:31:40,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:40,690 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:40,690 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:40,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:40,691 INFO L82 PathProgramCache]: Analyzing trace with hash 746322160, now seen corresponding path program 1 times [2018-10-24 14:31:40,691 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:40,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:40,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:40,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:40,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:41,342 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-24 14:31:41,637 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 6 [2018-10-24 14:31:42,007 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 6 [2018-10-24 14:31:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-24 14:31:42,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:31:42,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:31:42,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:31:42,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:31:42,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:31:42,481 INFO L87 Difference]: Start difference. First operand 27036 states and 30093 transitions. Second operand 5 states. [2018-10-24 14:31:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:49,803 INFO L93 Difference]: Finished difference Result 83974 states and 93114 transitions. [2018-10-24 14:31:49,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:31:49,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 597 [2018-10-24 14:31:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:49,872 INFO L225 Difference]: With dead ends: 83974 [2018-10-24 14:31:49,873 INFO L226 Difference]: Without dead ends: 57366 [2018-10-24 14:31:49,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:31:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57366 states. [2018-10-24 14:31:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57366 to 37260. [2018-10-24 14:31:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37260 states. [2018-10-24 14:31:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37260 states to 37260 states and 41061 transitions. [2018-10-24 14:31:50,436 INFO L78 Accepts]: Start accepts. Automaton has 37260 states and 41061 transitions. Word has length 597 [2018-10-24 14:31:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:50,437 INFO L481 AbstractCegarLoop]: Abstraction has 37260 states and 41061 transitions. [2018-10-24 14:31:50,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:31:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 37260 states and 41061 transitions. [2018-10-24 14:31:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-10-24 14:31:50,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:50,456 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:50,457 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:50,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:50,457 INFO L82 PathProgramCache]: Analyzing trace with hash 78520875, now seen corresponding path program 1 times [2018-10-24 14:31:50,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:50,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:50,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:50,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:50,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2018-10-24 14:31:51,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:31:51,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:31:51,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:31:51,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:31:51,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:31:51,186 INFO L87 Difference]: Start difference. First operand 37260 states and 41061 transitions. Second operand 3 states. [2018-10-24 14:31:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:54,089 INFO L93 Difference]: Finished difference Result 74088 states and 81688 transitions. [2018-10-24 14:31:54,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:31:54,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 599 [2018-10-24 14:31:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:54,123 INFO L225 Difference]: With dead ends: 74088 [2018-10-24 14:31:54,123 INFO L226 Difference]: Without dead ends: 37256 [2018-10-24 14:31:54,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:31:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37256 states. [2018-10-24 14:31:54,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37256 to 37256. [2018-10-24 14:31:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37256 states. [2018-10-24 14:31:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37256 states to 37256 states and 40834 transitions. [2018-10-24 14:31:54,557 INFO L78 Accepts]: Start accepts. Automaton has 37256 states and 40834 transitions. Word has length 599 [2018-10-24 14:31:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:54,558 INFO L481 AbstractCegarLoop]: Abstraction has 37256 states and 40834 transitions. [2018-10-24 14:31:54,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:31:54,558 INFO L276 IsEmpty]: Start isEmpty. Operand 37256 states and 40834 transitions. [2018-10-24 14:31:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2018-10-24 14:31:54,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:54,576 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:54,576 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:54,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:54,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1020744260, now seen corresponding path program 1 times [2018-10-24 14:31:54,577 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:54,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:54,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:54,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:54,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 99 proven. 435 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-24 14:31:55,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:31:55,917 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:31:55,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:56,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:32:01,098 WARN L179 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 163 DAG size of output: 31 [2018-10-24 14:32:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 431 proven. 104 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-24 14:32:03,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:32:03,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-24 14:32:03,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:32:03,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:32:03,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:32:03,629 INFO L87 Difference]: Start difference. First operand 37256 states and 40834 transitions. Second operand 9 states. [2018-10-24 14:32:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:37,934 INFO L93 Difference]: Finished difference Result 107340 states and 117166 transitions. [2018-10-24 14:32:37,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 14:32:37,935 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 602 [2018-10-24 14:32:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:37,989 INFO L225 Difference]: With dead ends: 107340 [2018-10-24 14:32:37,989 INFO L226 Difference]: Without dead ends: 64952 [2018-10-24 14:32:38,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 610 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2018-10-24 14:32:38,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64952 states. [2018-10-24 14:32:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64952 to 48743. [2018-10-24 14:32:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48743 states. [2018-10-24 14:32:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48743 states to 48743 states and 52371 transitions. [2018-10-24 14:32:38,457 INFO L78 Accepts]: Start accepts. Automaton has 48743 states and 52371 transitions. Word has length 602 [2018-10-24 14:32:38,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:38,458 INFO L481 AbstractCegarLoop]: Abstraction has 48743 states and 52371 transitions. [2018-10-24 14:32:38,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:32:38,459 INFO L276 IsEmpty]: Start isEmpty. Operand 48743 states and 52371 transitions. [2018-10-24 14:32:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-10-24 14:32:38,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:38,482 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:38,483 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:38,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:38,483 INFO L82 PathProgramCache]: Analyzing trace with hash -107300692, now seen corresponding path program 1 times [2018-10-24 14:32:38,483 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:38,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:38,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:38,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:38,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-10-24 14:32:39,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:32:39,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:32:39,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:32:39,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:32:39,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:32:39,028 INFO L87 Difference]: Start difference. First operand 48743 states and 52371 transitions. Second operand 3 states. [2018-10-24 14:32:42,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:42,085 INFO L93 Difference]: Finished difference Result 101749 states and 109576 transitions. [2018-10-24 14:32:42,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:32:42,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 752 [2018-10-24 14:32:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:42,138 INFO L225 Difference]: With dead ends: 101749 [2018-10-24 14:32:42,138 INFO L226 Difference]: Without dead ends: 52147 [2018-10-24 14:32:42,167 INFO L605 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 [2018-10-24 14:32:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52147 states. [2018-10-24 14:32:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52147 to 49160. [2018-10-24 14:32:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49160 states. [2018-10-24 14:32:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49160 states to 49160 states and 52612 transitions. [2018-10-24 14:32:42,993 INFO L78 Accepts]: Start accepts. Automaton has 49160 states and 52612 transitions. Word has length 752 [2018-10-24 14:32:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:42,993 INFO L481 AbstractCegarLoop]: Abstraction has 49160 states and 52612 transitions. [2018-10-24 14:32:42,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:32:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 49160 states and 52612 transitions. [2018-10-24 14:32:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-10-24 14:32:43,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:43,008 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, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:43,009 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:43,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:43,009 INFO L82 PathProgramCache]: Analyzing trace with hash 734639147, now seen corresponding path program 1 times [2018-10-24 14:32:43,009 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:43,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:43,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:43,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:43,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:43,629 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 9 [2018-10-24 14:32:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2018-10-24 14:32:44,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:32:44,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:32:44,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:32:44,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:32:44,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:32:44,180 INFO L87 Difference]: Start difference. First operand 49160 states and 52612 transitions. Second operand 4 states. [2018-10-24 14:32:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:32:51,017 INFO L93 Difference]: Finished difference Result 109849 states and 117499 transitions. [2018-10-24 14:32:51,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:32:51,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 796 [2018-10-24 14:32:51,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:32:51,075 INFO L225 Difference]: With dead ends: 109849 [2018-10-24 14:32:51,075 INFO L226 Difference]: Without dead ends: 58553 [2018-10-24 14:32:51,104 INFO L605 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 [2018-10-24 14:32:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58553 states. [2018-10-24 14:32:51,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58553 to 55131. [2018-10-24 14:32:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55131 states. [2018-10-24 14:32:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55131 states to 55131 states and 58593 transitions. [2018-10-24 14:32:52,020 INFO L78 Accepts]: Start accepts. Automaton has 55131 states and 58593 transitions. Word has length 796 [2018-10-24 14:32:52,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:32:52,021 INFO L481 AbstractCegarLoop]: Abstraction has 55131 states and 58593 transitions. [2018-10-24 14:32:52,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:32:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 55131 states and 58593 transitions. [2018-10-24 14:32:52,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2018-10-24 14:32:52,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:32:52,037 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, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:32:52,038 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:32:52,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:32:52,038 INFO L82 PathProgramCache]: Analyzing trace with hash -496634279, now seen corresponding path program 1 times [2018-10-24 14:32:52,038 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:32:52,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:32:52,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:52,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:52,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:32:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:52,784 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-24 14:32:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 982 proven. 80 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-24 14:32:53,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:32:53,423 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:32:53,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:32:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:32:53,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:32:53,909 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-10-24 14:32:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-10-24 14:32:56,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:32:56,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-24 14:32:56,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:32:56,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:32:56,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:32:56,440 INFO L87 Difference]: Start difference. First operand 55131 states and 58593 transitions. Second operand 6 states. Received shutdown request... [2018-10-24 14:32:58,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:32:58,147 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:32:58,153 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:32:58,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:32:58 BoogieIcfgContainer [2018-10-24 14:32:58,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:32:58,155 INFO L168 Benchmark]: Toolchain (without parser) took 237675.15 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -381.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 14:32:58,156 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:32:58,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1555.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:58,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 595.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -870.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:58,158 INFO L168 Benchmark]: Boogie Preprocessor took 388.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:58,159 INFO L168 Benchmark]: RCFGBuilder took 8474.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 461.1 MB). Peak memory consumption was 461.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:58,160 INFO L168 Benchmark]: TraceAbstraction took 226653.23 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -159.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:32:58,165 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1555.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 595.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -870.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 388.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8474.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 461.1 MB). Peak memory consumption was 461.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226653.23 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -159.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 86). Cancelled while BasicCegarLoop was constructing difference of abstraction (55131states) and FLOYD_HOARE automaton (currently 4 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (663 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 226.5s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 190.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5983 SDtfs, 24246 SDslu, 3829 SDs, 0 SdLazy, 65532 SolverSat, 7938 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 170.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3064 GetRequests, 2976 SyntacticMatches, 11 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55131occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 54307 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 9778 NumberOfCodeBlocks, 9778 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9757 ConstructedInterpolants, 934 QuantifiedInterpolants, 42762970 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3693 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 21 InterpolantComputations, 12 PerfectInterpolantSequences, 8756/10066 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown