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/Problem19_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:06:09,368 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:06:09,371 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:06:09,385 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:06:09,385 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:06:09,387 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:06:09,391 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:06:09,393 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:06:09,398 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:06:09,399 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:06:09,400 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:06:09,400 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:06:09,402 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:06:09,404 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:06:09,405 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:06:09,405 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:06:09,406 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:06:09,408 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:06:09,410 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:06:09,412 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:06:09,413 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:06:09,414 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:06:09,417 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:06:09,417 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:06:09,417 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:06:09,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:06:09,419 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:06:09,421 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:06:09,421 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:06:09,423 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:06:09,423 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:06:09,424 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 22:06:09,426 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 [2018-10-26 22:06:09,442 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:06:09,442 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:06:09,447 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:06:09,448 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:06:09,449 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:06:09,449 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:06:09,449 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:06:09,449 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:06:09,449 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:06:09,451 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:06:09,451 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:06:09,451 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:06:09,451 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:06:09,452 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:06:09,452 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:06:09,452 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:06:09,452 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:06:09,452 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:06:09,453 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:06:09,453 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:06:09,453 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:06:09,453 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:06:09,453 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:06:09,454 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:06:09,454 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:06:09,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:06:09,454 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:06:09,454 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:06:09,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:06:09,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:06:09,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:06:09,533 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:06:09,534 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:06:09,534 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label03_true-unreach-call.c [2018-10-26 22:06:09,600 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5b552884/d236cdc98efd4b2295cbee3fe31d7235/FLAG8fab6c391 [2018-10-26 22:06:10,533 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:06:10,534 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label03_true-unreach-call.c [2018-10-26 22:06:10,577 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5b552884/d236cdc98efd4b2295cbee3fe31d7235/FLAG8fab6c391 [2018-10-26 22:06:10,591 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5b552884/d236cdc98efd4b2295cbee3fe31d7235 [2018-10-26 22:06:10,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:06:10,604 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:06:10,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:06:10,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:06:10,610 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:06:10,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:06:10" (1/1) ... [2018-10-26 22:06:10,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:10, skipping insertion in model container [2018-10-26 22:06:10,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:06:10" (1/1) ... [2018-10-26 22:06:10,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:06:10,889 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:06:13,055 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:06:13,060 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:06:14,599 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:06:14,669 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:06:14,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14 WrapperNode [2018-10-26 22:06:14,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:06:14,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:06:14,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:06:14,675 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:06:14,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:14,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:15,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:06:15,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:06:15,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:06:15,957 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:06:15,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:15,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:16,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:16,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:16,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:16,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:16,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (1/1) ... [2018-10-26 22:06:16,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:06:16,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:06:16,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:06:16,756 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:06:16,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (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 [2018-10-26 22:06:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:06:16,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:06:16,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:06:34,475 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:06:34,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:06:34 BoogieIcfgContainer [2018-10-26 22:06:34,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:06:34,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:06:34,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:06:34,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:06:34,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:06:10" (1/3) ... [2018-10-26 22:06:34,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550844ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:06:34, skipping insertion in model container [2018-10-26 22:06:34,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:06:14" (2/3) ... [2018-10-26 22:06:34,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550844ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:06:34, skipping insertion in model container [2018-10-26 22:06:34,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:06:34" (3/3) ... [2018-10-26 22:06:34,485 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label03_true-unreach-call.c [2018-10-26 22:06:34,495 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:06:34,507 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:06:34,525 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:06:34,576 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:06:34,577 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:06:34,577 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:06:34,577 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:06:34,577 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:06:34,577 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:06:34,578 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:06:34,578 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:06:34,578 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:06:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:06:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-26 22:06:34,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:06:34,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:06:34,646 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:06:34,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:06:34,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1482679290, now seen corresponding path program 1 times [2018-10-26 22:06:34,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:06:34,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:06:34,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:34,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:06:34,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:06:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:06:35,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:06:35,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:06:35,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:06:35,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:06:35,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:06:35,226 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-26 22:06:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:06:58,369 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-26 22:06:58,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:06:58,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-26 22:06:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:06:58,429 INFO L225 Difference]: With dead ends: 6324 [2018-10-26 22:06:58,429 INFO L226 Difference]: Without dead ends: 4568 [2018-10-26 22:06:58,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:06:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-26 22:06:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-26 22:06:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-26 22:06:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-26 22:06:58,652 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 58 [2018-10-26 22:06:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:06:58,653 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-26 22:06:58,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:06:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-26 22:06:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-26 22:06:58,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:06:58,661 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:06:58,661 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:06:58,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:06:58,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1551936202, now seen corresponding path program 1 times [2018-10-26 22:06:58,662 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:06:58,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:06:58,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:58,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:06:58,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:06:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:06:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:06:58,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:06:58,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:06:58,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:06:58,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:06:58,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:06:58,950 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-26 22:07:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:25,938 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-26 22:07:25,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:07:25,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-26 22:07:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:26,012 INFO L225 Difference]: With dead ends: 17544 [2018-10-26 22:07:26,012 INFO L226 Difference]: Without dead ends: 12983 [2018-10-26 22:07:26,024 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 [2018-10-26 22:07:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-26 22:07:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 8662. [2018-10-26 22:07:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2018-10-26 22:07:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13841 transitions. [2018-10-26 22:07:26,263 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13841 transitions. Word has length 136 [2018-10-26 22:07:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:26,264 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 13841 transitions. [2018-10-26 22:07:26,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:07:26,264 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13841 transitions. [2018-10-26 22:07:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-26 22:07:26,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:26,278 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:07:26,278 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:26,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:26,278 INFO L82 PathProgramCache]: Analyzing trace with hash 53337046, now seen corresponding path program 1 times [2018-10-26 22:07:26,279 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:26,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:26,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:26,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:26,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:07:26,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:26,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:07:26,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:07:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:07:26,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:07:26,681 INFO L87 Difference]: Start difference. First operand 8662 states and 13841 transitions. Second operand 4 states. [2018-10-26 22:07:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:46,336 INFO L93 Difference]: Finished difference Result 33991 states and 54526 transitions. [2018-10-26 22:07:46,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:07:46,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-10-26 22:07:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:46,418 INFO L225 Difference]: With dead ends: 33991 [2018-10-26 22:07:46,419 INFO L226 Difference]: Without dead ends: 25331 [2018-10-26 22:07:46,439 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 [2018-10-26 22:07:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25331 states. [2018-10-26 22:07:46,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25331 to 25321. [2018-10-26 22:07:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25321 states. [2018-10-26 22:07:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25321 states to 25321 states and 34467 transitions. [2018-10-26 22:07:46,907 INFO L78 Accepts]: Start accepts. Automaton has 25321 states and 34467 transitions. Word has length 156 [2018-10-26 22:07:46,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:46,907 INFO L481 AbstractCegarLoop]: Abstraction has 25321 states and 34467 transitions. [2018-10-26 22:07:46,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:07:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 25321 states and 34467 transitions. [2018-10-26 22:07:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-26 22:07:46,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:46,911 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:07:46,911 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:46,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:46,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1163001105, now seen corresponding path program 1 times [2018-10-26 22:07:46,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:46,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:46,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:46,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:46,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:47,602 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:07:47,937 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-26 22:07:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:07:48,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:48,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:07:48,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:07:48,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:07:48,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:07:48,120 INFO L87 Difference]: Start difference. First operand 25321 states and 34467 transitions. Second operand 6 states. [2018-10-26 22:08:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:16,137 INFO L93 Difference]: Finished difference Result 82151 states and 109854 transitions. [2018-10-26 22:08:16,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:08:16,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-10-26 22:08:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:16,232 INFO L225 Difference]: With dead ends: 82151 [2018-10-26 22:08:16,232 INFO L226 Difference]: Without dead ends: 56832 [2018-10-26 22:08:16,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:08:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56832 states. [2018-10-26 22:08:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56832 to 55390. [2018-10-26 22:08:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55390 states. [2018-10-26 22:08:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 72762 transitions. [2018-10-26 22:08:16,991 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 72762 transitions. Word has length 163 [2018-10-26 22:08:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:08:16,991 INFO L481 AbstractCegarLoop]: Abstraction has 55390 states and 72762 transitions. [2018-10-26 22:08:16,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:08:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 72762 transitions. [2018-10-26 22:08:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-26 22:08:16,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:16,997 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:08:16,997 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:16,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:16,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1047820557, now seen corresponding path program 1 times [2018-10-26 22:08:16,998 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:16,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:16,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:16,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:16,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:08:17,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:08:17,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:08:17,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:08:17,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:08:17,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:17,439 INFO L87 Difference]: Start difference. First operand 55390 states and 72762 transitions. Second operand 4 states. [2018-10-26 22:08:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:38,044 INFO L93 Difference]: Finished difference Result 140975 states and 184048 transitions. [2018-10-26 22:08:38,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:08:38,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 294 [2018-10-26 22:08:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:38,192 INFO L225 Difference]: With dead ends: 140975 [2018-10-26 22:08:38,193 INFO L226 Difference]: Without dead ends: 80121 [2018-10-26 22:08:38,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:38,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80121 states. [2018-10-26 22:08:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80121 to 75896. [2018-10-26 22:08:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75896 states. [2018-10-26 22:08:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75896 states to 75896 states and 95166 transitions. [2018-10-26 22:08:39,092 INFO L78 Accepts]: Start accepts. Automaton has 75896 states and 95166 transitions. Word has length 294 [2018-10-26 22:08:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:08:39,097 INFO L481 AbstractCegarLoop]: Abstraction has 75896 states and 95166 transitions. [2018-10-26 22:08:39,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:08:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 75896 states and 95166 transitions. [2018-10-26 22:08:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-10-26 22:08:39,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:39,139 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:08:39,139 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:39,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:39,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1838479028, now seen corresponding path program 1 times [2018-10-26 22:08:39,141 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:39,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:39,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:39,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:39,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 822 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-10-26 22:08:40,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:08:40,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:08:40,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:08:40,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:08:40,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:40,509 INFO L87 Difference]: Start difference. First operand 75896 states and 95166 transitions. Second operand 4 states. [2018-10-26 22:08:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:08:55,866 INFO L93 Difference]: Finished difference Result 170911 states and 214797 transitions. [2018-10-26 22:08:55,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:08:55,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 768 [2018-10-26 22:08:55,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:08:56,001 INFO L225 Difference]: With dead ends: 170911 [2018-10-26 22:08:56,001 INFO L226 Difference]: Without dead ends: 95017 [2018-10-26 22:08:56,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:08:56,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95017 states. [2018-10-26 22:08:57,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95017 to 95007. [2018-10-26 22:08:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95007 states. [2018-10-26 22:08:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95007 states to 95007 states and 110244 transitions. [2018-10-26 22:08:57,336 INFO L78 Accepts]: Start accepts. Automaton has 95007 states and 110244 transitions. Word has length 768 [2018-10-26 22:08:57,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:08:57,337 INFO L481 AbstractCegarLoop]: Abstraction has 95007 states and 110244 transitions. [2018-10-26 22:08:57,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:08:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 95007 states and 110244 transitions. [2018-10-26 22:08:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2018-10-26 22:08:57,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:08:57,375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:08:57,376 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:08:57,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:08:57,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1650178156, now seen corresponding path program 1 times [2018-10-26 22:08:57,376 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:08:57,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:08:57,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:57,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:08:57,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:08:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:08:58,514 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-26 22:08:58,809 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-26 22:08:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 313 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-26 22:08:59,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:08:59,807 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 [2018-10-26 22:08:59,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:00,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:09:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-26 22:09:01,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:09:01,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 22:09:01,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:09:01,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:09:01,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:09:01,207 INFO L87 Difference]: Start difference. First operand 95007 states and 110244 transitions. Second operand 5 states. [2018-10-26 22:09:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:09:24,744 INFO L93 Difference]: Finished difference Result 211871 states and 244307 transitions. [2018-10-26 22:09:24,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:09:24,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 909 [2018-10-26 22:09:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:09:24,946 INFO L225 Difference]: With dead ends: 211871 [2018-10-26 22:09:24,946 INFO L226 Difference]: Without dead ends: 110027 [2018-10-26 22:09:25,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 909 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:09:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110027 states. [2018-10-26 22:09:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110027 to 108659. [2018-10-26 22:09:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108659 states. [2018-10-26 22:09:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108659 states to 108659 states and 118452 transitions. [2018-10-26 22:09:26,873 INFO L78 Accepts]: Start accepts. Automaton has 108659 states and 118452 transitions. Word has length 909 [2018-10-26 22:09:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:09:26,874 INFO L481 AbstractCegarLoop]: Abstraction has 108659 states and 118452 transitions. [2018-10-26 22:09:26,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:09:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 108659 states and 118452 transitions. [2018-10-26 22:09:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2018-10-26 22:09:26,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:09:26,900 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:09:26,901 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:09:26,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:09:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash 202496572, now seen corresponding path program 1 times [2018-10-26 22:09:26,902 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:09:26,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:09:26,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:26,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:26,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-10-26 22:09:28,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:09:28,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:09:28,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:09:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:09:28,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:09:28,429 INFO L87 Difference]: Start difference. First operand 108659 states and 118452 transitions. Second operand 3 states. [2018-10-26 22:09:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:09:41,050 INFO L93 Difference]: Finished difference Result 291100 states and 318316 transitions. [2018-10-26 22:09:41,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:09:41,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 977 [2018-10-26 22:09:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:09:41,272 INFO L225 Difference]: With dead ends: 291100 [2018-10-26 22:09:41,273 INFO L226 Difference]: Without dead ends: 182443 [2018-10-26 22:09:41,918 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 [2018-10-26 22:09:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182443 states. [2018-10-26 22:09:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182443 to 178320. [2018-10-26 22:09:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178320 states. [2018-10-26 22:09:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178320 states to 178320 states and 194140 transitions. [2018-10-26 22:09:43,731 INFO L78 Accepts]: Start accepts. Automaton has 178320 states and 194140 transitions. Word has length 977 [2018-10-26 22:09:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:09:43,733 INFO L481 AbstractCegarLoop]: Abstraction has 178320 states and 194140 transitions. [2018-10-26 22:09:43,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:09:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 178320 states and 194140 transitions. [2018-10-26 22:09:43,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-10-26 22:09:43,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:09:43,753 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:09:43,753 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:09:43,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:09:43,754 INFO L82 PathProgramCache]: Analyzing trace with hash 790513728, now seen corresponding path program 1 times [2018-10-26 22:09:43,754 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:09:43,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:09:43,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:43,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:09:43,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:09:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:09:44,532 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-26 22:09:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-26 22:09:45,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:09:45,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:09:45,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:09:45,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:09:45,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:09:45,459 INFO L87 Difference]: Start difference. First operand 178320 states and 194140 transitions. Second operand 4 states. [2018-10-26 22:10:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:10:02,833 INFO L93 Difference]: Finished difference Result 403092 states and 440192 transitions. [2018-10-26 22:10:02,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:10:02,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 988 [2018-10-26 22:10:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:10:03,111 INFO L225 Difference]: With dead ends: 403092 [2018-10-26 22:10:03,111 INFO L226 Difference]: Without dead ends: 224774 Received shutdown request... [2018-10-26 22:10:03,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:10:03,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224774 states. [2018-10-26 22:10:03,333 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:10:03,338 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:10:03,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:10:03 BoogieIcfgContainer [2018-10-26 22:10:03,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:10:03,339 INFO L168 Benchmark]: Toolchain (without parser) took 232735.59 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -620.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-26 22:10:03,340 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:10:03,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4065.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 994.7 MB in the end (delta: 406.8 MB). Peak memory consumption was 406.8 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:03,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 1285.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 712.0 MB). Free memory was 994.7 MB in the beginning and 2.0 GB in the end (delta: -998.2 MB). Peak memory consumption was 95.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:03,342 INFO L168 Benchmark]: Boogie Preprocessor took 798.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 95.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:03,343 INFO L168 Benchmark]: RCFGBuilder took 17721.48 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 294.1 MB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 209.9 MB). Peak memory consumption was 855.5 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:03,344 INFO L168 Benchmark]: TraceAbstraction took 208860.63 ms. Allocated memory was 2.5 GB in the beginning and 3.5 GB in the end (delta: 954.7 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -333.7 MB). Peak memory consumption was 621.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:10:03,350 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4065.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 994.7 MB in the end (delta: 406.8 MB). Peak memory consumption was 406.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1285.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 712.0 MB). Free memory was 994.7 MB in the beginning and 2.0 GB in the end (delta: -998.2 MB). Peak memory consumption was 95.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 798.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 95.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17721.48 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 294.1 MB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 209.9 MB). Peak memory consumption was 855.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208860.63 ms. Allocated memory was 2.5 GB in the beginning and 3.5 GB in the end (delta: 954.7 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -333.7 MB). Peak memory consumption was 621.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 189.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11403 SDtfs, 36123 SDslu, 3159 SDs, 0 SdLazy, 78475 SolverSat, 18692 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 158.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 956 GetRequests, 922 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178320occurred in iteration=8, 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: 7.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 15504 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 5358 NumberOfCodeBlocks, 5358 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5348 ConstructedInterpolants, 0 QuantifiedInterpolants, 9955443 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1008 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3446/3450 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown