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/Problem11_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 13:59:32,433 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 13:59:32,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 13:59:32,452 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 13:59:32,452 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 13:59:32,454 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 13:59:32,455 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 13:59:32,458 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 13:59:32,461 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 13:59:32,462 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 13:59:32,463 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 13:59:32,463 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 13:59:32,466 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 13:59:32,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 13:59:32,468 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 13:59:32,471 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 13:59:32,472 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 13:59:32,481 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 13:59:32,483 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 13:59:32,485 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 13:59:32,486 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 13:59:32,487 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 13:59:32,489 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 13:59:32,489 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 13:59:32,490 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 13:59:32,491 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 13:59:32,491 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 13:59:32,492 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 13:59:32,493 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 13:59:32,494 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 13:59:32,494 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 13:59:32,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 13:59:32,499 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 13:59:32,527 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 13:59:32,528 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 13:59:32,528 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 13:59:32,529 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 13:59:32,529 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 13:59:32,529 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 13:59:32,531 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 13:59:32,531 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 13:59:32,531 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 13:59:32,531 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 13:59:32,531 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 13:59:32,532 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 13:59:32,532 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 13:59:32,532 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 13:59:32,532 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 13:59:32,532 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 13:59:32,533 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 13:59:32,533 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 13:59:32,534 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 13:59:32,534 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 13:59:32,534 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 13:59:32,534 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 13:59:32,534 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 13:59:32,535 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 13:59:32,535 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 13:59:32,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 13:59:32,535 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 13:59:32,536 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 13:59:32,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 13:59:32,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 13:59:32,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 13:59:32,633 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 13:59:32,633 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 13:59:32,634 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label34_false-unreach-call.c [2018-10-24 13:59:32,701 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a61e0198e/acc0d5d0f33f4dc6bb23ce12584f210f/FLAGb87edb7fb [2018-10-24 13:59:33,321 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 13:59:33,322 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label34_false-unreach-call.c [2018-10-24 13:59:33,348 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a61e0198e/acc0d5d0f33f4dc6bb23ce12584f210f/FLAGb87edb7fb [2018-10-24 13:59:33,366 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a61e0198e/acc0d5d0f33f4dc6bb23ce12584f210f [2018-10-24 13:59:33,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 13:59:33,381 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 13:59:33,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 13:59:33,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 13:59:33,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 13:59:33,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:59:33" (1/1) ... [2018-10-24 13:59:33,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79efdec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:33, skipping insertion in model container [2018-10-24 13:59:33,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:59:33" (1/1) ... [2018-10-24 13:59:33,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 13:59:33,496 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 13:59:34,170 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:59:34,175 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 13:59:34,356 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:59:34,375 INFO L193 MainTranslator]: Completed translation [2018-10-24 13:59:34,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34 WrapperNode [2018-10-24 13:59:34,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 13:59:34,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 13:59:34,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 13:59:34,377 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 13:59:34,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 13:59:34,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 13:59:34,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 13:59:34,679 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 13:59:34,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (1/1) ... [2018-10-24 13:59:34,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 13:59:34,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 13:59:34,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 13:59:34,816 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 13:59:34,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (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 13:59:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 13:59:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 13:59:34,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 13:59:39,603 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 13:59:39,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:39 BoogieIcfgContainer [2018-10-24 13:59:39,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 13:59:39,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 13:59:39,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 13:59:39,610 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 13:59:39,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:59:33" (1/3) ... [2018-10-24 13:59:39,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11180191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:59:39, skipping insertion in model container [2018-10-24 13:59:39,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:34" (2/3) ... [2018-10-24 13:59:39,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11180191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:59:39, skipping insertion in model container [2018-10-24 13:59:39,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:39" (3/3) ... [2018-10-24 13:59:39,614 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label34_false-unreach-call.c [2018-10-24 13:59:39,625 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 13:59:39,635 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 13:59:39,653 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 13:59:39,691 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 13:59:39,692 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 13:59:39,692 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 13:59:39,692 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 13:59:39,692 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 13:59:39,693 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 13:59:39,693 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 13:59:39,693 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 13:59:39,693 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 13:59:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 13:59:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-24 13:59:39,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:39,727 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:59:39,731 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:39,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:39,736 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-10-24 13:59:39,738 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:39,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:39,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:39,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:39,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:40,013 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 13:59:40,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:40,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:59:40,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:59:40,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:59:40,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:59:40,034 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-24 13:59:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:43,230 INFO L93 Difference]: Finished difference Result 958 states and 1725 transitions. [2018-10-24 13:59:43,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:59:43,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-24 13:59:43,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:43,258 INFO L225 Difference]: With dead ends: 958 [2018-10-24 13:59:43,258 INFO L226 Difference]: Without dead ends: 667 [2018-10-24 13:59:43,264 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 13:59:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-10-24 13:59:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-10-24 13:59:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-10-24 13:59:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 983 transitions. [2018-10-24 13:59:43,358 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 983 transitions. Word has length 9 [2018-10-24 13:59:43,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:43,359 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 983 transitions. [2018-10-24 13:59:43,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:59:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 983 transitions. [2018-10-24 13:59:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-24 13:59:43,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:43,363 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 13:59:43,363 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:43,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:43,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1901067273, now seen corresponding path program 1 times [2018-10-24 13:59:43,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:43,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:43,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:43,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:43,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:44,045 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 9 [2018-10-24 13:59:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:59:44,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:44,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:59:44,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 13:59:44,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 13:59:44,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:59:44,086 INFO L87 Difference]: Start difference. First operand 667 states and 983 transitions. Second operand 5 states. [2018-10-24 13:59:49,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:49,690 INFO L93 Difference]: Finished difference Result 2465 states and 3702 transitions. [2018-10-24 13:59:49,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 13:59:49,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2018-10-24 13:59:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:49,699 INFO L225 Difference]: With dead ends: 2465 [2018-10-24 13:59:49,700 INFO L226 Difference]: Without dead ends: 1800 [2018-10-24 13:59:49,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:59:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-10-24 13:59:49,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1795. [2018-10-24 13:59:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2018-10-24 13:59:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2358 transitions. [2018-10-24 13:59:49,780 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2358 transitions. Word has length 79 [2018-10-24 13:59:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:49,781 INFO L481 AbstractCegarLoop]: Abstraction has 1795 states and 2358 transitions. [2018-10-24 13:59:49,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 13:59:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2358 transitions. [2018-10-24 13:59:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 13:59:49,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:49,789 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 13:59:49,789 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:49,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:49,789 INFO L82 PathProgramCache]: Analyzing trace with hash -641785380, now seen corresponding path program 1 times [2018-10-24 13:59:49,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:49,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:49,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:49,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:49,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:59:50,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:50,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:59:50,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 13:59:50,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 13:59:50,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:59:50,022 INFO L87 Difference]: Start difference. First operand 1795 states and 2358 transitions. Second operand 5 states. [2018-10-24 13:59:53,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:53,355 INFO L93 Difference]: Finished difference Result 5120 states and 7022 transitions. [2018-10-24 13:59:53,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 13:59:53,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-10-24 13:59:53,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:53,373 INFO L225 Difference]: With dead ends: 5120 [2018-10-24 13:59:53,374 INFO L226 Difference]: Without dead ends: 3327 [2018-10-24 13:59:53,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:59:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2018-10-24 13:59:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3108. [2018-10-24 13:59:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3108 states. [2018-10-24 13:59:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4156 transitions. [2018-10-24 13:59:53,441 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4156 transitions. Word has length 137 [2018-10-24 13:59:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:53,442 INFO L481 AbstractCegarLoop]: Abstraction has 3108 states and 4156 transitions. [2018-10-24 13:59:53,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 13:59:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4156 transitions. [2018-10-24 13:59:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-24 13:59:53,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:53,447 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:59:53,447 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:53,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:53,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1620622288, now seen corresponding path program 1 times [2018-10-24 13:59:53,448 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:53,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:53,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:53,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:53,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:59:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 13:59:53,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:59:53,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:59:53,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:59:53,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:59:53,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:59:53,704 INFO L87 Difference]: Start difference. First operand 3108 states and 4156 transitions. Second operand 4 states. [2018-10-24 13:59:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:59:59,581 INFO L93 Difference]: Finished difference Result 11787 states and 15902 transitions. [2018-10-24 13:59:59,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:59:59,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2018-10-24 13:59:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:59:59,616 INFO L225 Difference]: With dead ends: 11787 [2018-10-24 13:59:59,616 INFO L226 Difference]: Without dead ends: 8681 [2018-10-24 13:59:59,622 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 13:59:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8681 states. [2018-10-24 13:59:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8681 to 8657. [2018-10-24 13:59:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8657 states. [2018-10-24 13:59:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8657 states to 8657 states and 10954 transitions. [2018-10-24 13:59:59,776 INFO L78 Accepts]: Start accepts. Automaton has 8657 states and 10954 transitions. Word has length 159 [2018-10-24 13:59:59,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:59:59,776 INFO L481 AbstractCegarLoop]: Abstraction has 8657 states and 10954 transitions. [2018-10-24 13:59:59,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:59:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8657 states and 10954 transitions. [2018-10-24 13:59:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-24 13:59:59,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:59:59,781 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:59,781 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:59:59,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:59:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1311004756, now seen corresponding path program 1 times [2018-10-24 13:59:59,782 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:59:59,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:59:59,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:59,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:59:59,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:59:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 14:00:00,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:00,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:00:00,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:00:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:00:00,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:00:00,026 INFO L87 Difference]: Start difference. First operand 8657 states and 10954 transitions. Second operand 4 states. [2018-10-24 14:00:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:03,014 INFO L93 Difference]: Finished difference Result 21772 states and 27942 transitions. [2018-10-24 14:00:03,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:00:03,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2018-10-24 14:00:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:03,061 INFO L225 Difference]: With dead ends: 21772 [2018-10-24 14:00:03,061 INFO L226 Difference]: Without dead ends: 13302 [2018-10-24 14:00:03,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:00:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13302 states. [2018-10-24 14:00:03,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13302 to 13095. [2018-10-24 14:00:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13095 states. [2018-10-24 14:00:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 16112 transitions. [2018-10-24 14:00:03,295 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 16112 transitions. Word has length 203 [2018-10-24 14:00:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:03,296 INFO L481 AbstractCegarLoop]: Abstraction has 13095 states and 16112 transitions. [2018-10-24 14:00:03,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:00:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 16112 transitions. [2018-10-24 14:00:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-24 14:00:03,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:03,301 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:03,301 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:03,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:03,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1028797281, now seen corresponding path program 1 times [2018-10-24 14:00:03,302 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:03,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:03,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:03,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:03,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:03,844 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:00:04,188 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 9 [2018-10-24 14:00:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:04,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:04,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:00:04,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:00:04,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:00:04,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:04,243 INFO L87 Difference]: Start difference. First operand 13095 states and 16112 transitions. Second operand 5 states. [2018-10-24 14:00:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:07,406 INFO L93 Difference]: Finished difference Result 26391 states and 32956 transitions. [2018-10-24 14:00:07,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:00:07,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2018-10-24 14:00:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:07,439 INFO L225 Difference]: With dead ends: 26391 [2018-10-24 14:00:07,439 INFO L226 Difference]: Without dead ends: 15340 [2018-10-24 14:00:07,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15340 states. [2018-10-24 14:00:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15340 to 14768. [2018-10-24 14:00:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14768 states. [2018-10-24 14:00:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14768 states to 14768 states and 17955 transitions. [2018-10-24 14:00:07,635 INFO L78 Accepts]: Start accepts. Automaton has 14768 states and 17955 transitions. Word has length 207 [2018-10-24 14:00:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:07,636 INFO L481 AbstractCegarLoop]: Abstraction has 14768 states and 17955 transitions. [2018-10-24 14:00:07,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:00:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 14768 states and 17955 transitions. [2018-10-24 14:00:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 14:00:07,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:07,640 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:07,641 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:07,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash -935250753, now seen corresponding path program 1 times [2018-10-24 14:00:07,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:07,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:07,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:07,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:07,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 78 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:08,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:08,018 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 14:00:08,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:08,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:00:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:08,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:00:08,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:00:08,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:00:08,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:00:08,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:00:08,463 INFO L87 Difference]: Start difference. First operand 14768 states and 17955 transitions. Second operand 7 states. [2018-10-24 14:00:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:16,331 INFO L93 Difference]: Finished difference Result 32321 states and 39592 transitions. [2018-10-24 14:00:16,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 14:00:16,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2018-10-24 14:00:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:16,361 INFO L225 Difference]: With dead ends: 32321 [2018-10-24 14:00:16,362 INFO L226 Difference]: Without dead ends: 16983 [2018-10-24 14:00:16,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:00:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2018-10-24 14:00:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 14557. [2018-10-24 14:00:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14557 states. [2018-10-24 14:00:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14557 states to 14557 states and 16573 transitions. [2018-10-24 14:00:16,628 INFO L78 Accepts]: Start accepts. Automaton has 14557 states and 16573 transitions. Word has length 223 [2018-10-24 14:00:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:16,629 INFO L481 AbstractCegarLoop]: Abstraction has 14557 states and 16573 transitions. [2018-10-24 14:00:16,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:00:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 14557 states and 16573 transitions. [2018-10-24 14:00:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-24 14:00:16,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:16,638 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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] [2018-10-24 14:00:16,639 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:16,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:16,639 INFO L82 PathProgramCache]: Analyzing trace with hash 320077830, now seen corresponding path program 1 times [2018-10-24 14:00:16,639 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:16,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:16,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:16,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:16,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 152 proven. 97 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 14:00:17,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:17,134 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 14:00:17,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:17,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:00:17,779 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 483 DAG size of output: 27 [2018-10-24 14:00:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 20 proven. 139 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 14:00:18,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:00:18,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-24 14:00:18,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:00:18,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:00:18,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:00:18,300 INFO L87 Difference]: Start difference. First operand 14557 states and 16573 transitions. Second operand 7 states. [2018-10-24 14:00:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:28,725 INFO L93 Difference]: Finished difference Result 48051 states and 54784 transitions. [2018-10-24 14:00:28,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 14:00:28,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2018-10-24 14:00:28,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:28,786 INFO L225 Difference]: With dead ends: 48051 [2018-10-24 14:00:28,786 INFO L226 Difference]: Without dead ends: 32002 [2018-10-24 14:00:28,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-10-24 14:00:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32002 states. [2018-10-24 14:00:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32002 to 20287. [2018-10-24 14:00:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20287 states. [2018-10-24 14:00:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20287 states to 20287 states and 22636 transitions. [2018-10-24 14:00:29,110 INFO L78 Accepts]: Start accepts. Automaton has 20287 states and 22636 transitions. Word has length 290 [2018-10-24 14:00:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:29,111 INFO L481 AbstractCegarLoop]: Abstraction has 20287 states and 22636 transitions. [2018-10-24 14:00:29,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:00:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 20287 states and 22636 transitions. [2018-10-24 14:00:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-24 14:00:29,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:29,124 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:00:29,124 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:29,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:29,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1698347065, now seen corresponding path program 1 times [2018-10-24 14:00:29,125 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:29,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:29,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:29,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:29,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 14:00:29,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:29,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:00:29,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:00:29,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:00:29,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:29,654 INFO L87 Difference]: Start difference. First operand 20287 states and 22636 transitions. Second operand 5 states. [2018-10-24 14:00:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:34,031 INFO L93 Difference]: Finished difference Result 50586 states and 56539 transitions. [2018-10-24 14:00:34,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:00:34,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 306 [2018-10-24 14:00:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:34,083 INFO L225 Difference]: With dead ends: 50586 [2018-10-24 14:00:34,084 INFO L226 Difference]: Without dead ends: 30671 [2018-10-24 14:00:34,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:00:34,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30671 states. [2018-10-24 14:00:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30671 to 23984. [2018-10-24 14:00:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23984 states. [2018-10-24 14:00:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23984 states to 23984 states and 26250 transitions. [2018-10-24 14:00:34,395 INFO L78 Accepts]: Start accepts. Automaton has 23984 states and 26250 transitions. Word has length 306 [2018-10-24 14:00:34,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:34,396 INFO L481 AbstractCegarLoop]: Abstraction has 23984 states and 26250 transitions. [2018-10-24 14:00:34,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:00:34,396 INFO L276 IsEmpty]: Start isEmpty. Operand 23984 states and 26250 transitions. [2018-10-24 14:00:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-24 14:00:34,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:34,408 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:00:34,408 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:34,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:34,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2026275391, now seen corresponding path program 1 times [2018-10-24 14:00:34,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:34,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:34,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:34,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:34,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-10-24 14:00:34,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:00:34,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:00:34,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:00:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:00:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:00:34,749 INFO L87 Difference]: Start difference. First operand 23984 states and 26250 transitions. Second operand 4 states. [2018-10-24 14:00:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:36,282 INFO L93 Difference]: Finished difference Result 47245 states and 51760 transitions. [2018-10-24 14:00:36,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:00:36,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2018-10-24 14:00:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:36,317 INFO L225 Difference]: With dead ends: 47245 [2018-10-24 14:00:36,318 INFO L226 Difference]: Without dead ends: 25113 [2018-10-24 14:00:36,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 14:00:36,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25113 states. [2018-10-24 14:00:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25113 to 24915. [2018-10-24 14:00:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24915 states. [2018-10-24 14:00:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24915 states to 24915 states and 27177 transitions. [2018-10-24 14:00:36,623 INFO L78 Accepts]: Start accepts. Automaton has 24915 states and 27177 transitions. Word has length 328 [2018-10-24 14:00:36,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:36,624 INFO L481 AbstractCegarLoop]: Abstraction has 24915 states and 27177 transitions. [2018-10-24 14:00:36,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:00:36,624 INFO L276 IsEmpty]: Start isEmpty. Operand 24915 states and 27177 transitions. [2018-10-24 14:00:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-24 14:00:36,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:36,638 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:00:36,639 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:36,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1654317144, now seen corresponding path program 1 times [2018-10-24 14:00:36,639 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:36,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:36,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:36,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:36,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 89 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:37,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:37,824 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 14:00:37,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:37,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:00:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 119 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:38,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:00:38,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-10-24 14:00:38,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 14:00:38,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 14:00:38,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:00:38,649 INFO L87 Difference]: Start difference. First operand 24915 states and 27177 transitions. Second operand 11 states. [2018-10-24 14:00:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:47,912 INFO L93 Difference]: Finished difference Result 51909 states and 56482 transitions. [2018-10-24 14:00:47,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 14:00:47,912 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 342 [2018-10-24 14:00:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:47,944 INFO L225 Difference]: With dead ends: 51909 [2018-10-24 14:00:47,944 INFO L226 Difference]: Without dead ends: 27365 [2018-10-24 14:00:47,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2018-10-24 14:00:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27365 states. [2018-10-24 14:00:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27365 to 21554. [2018-10-24 14:00:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21554 states. [2018-10-24 14:00:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21554 states to 21554 states and 23357 transitions. [2018-10-24 14:00:48,392 INFO L78 Accepts]: Start accepts. Automaton has 21554 states and 23357 transitions. Word has length 342 [2018-10-24 14:00:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:48,393 INFO L481 AbstractCegarLoop]: Abstraction has 21554 states and 23357 transitions. [2018-10-24 14:00:48,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 14:00:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 21554 states and 23357 transitions. [2018-10-24 14:00:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-10-24 14:00:48,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:48,405 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:48,406 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:48,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:48,406 INFO L82 PathProgramCache]: Analyzing trace with hash -13825021, now seen corresponding path program 1 times [2018-10-24 14:00:48,406 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:48,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:48,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:48,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:48,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 311 proven. 181 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 14:00:48,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:48,771 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 14:00:48,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:48,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:00:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 311 proven. 181 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 14:00:49,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:00:49,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-10-24 14:00:49,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:00:49,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:00:49,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:00:49,323 INFO L87 Difference]: Start difference. First operand 21554 states and 23357 transitions. Second operand 7 states. [2018-10-24 14:00:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:00:54,922 INFO L93 Difference]: Finished difference Result 53689 states and 57930 transitions. [2018-10-24 14:00:54,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:00:54,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 384 [2018-10-24 14:00:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:00:54,956 INFO L225 Difference]: With dead ends: 53689 [2018-10-24 14:00:54,956 INFO L226 Difference]: Without dead ends: 31202 [2018-10-24 14:00:54,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:00:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31202 states. [2018-10-24 14:00:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31202 to 22282. [2018-10-24 14:00:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22282 states. [2018-10-24 14:00:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22282 states to 22282 states and 23963 transitions. [2018-10-24 14:00:55,245 INFO L78 Accepts]: Start accepts. Automaton has 22282 states and 23963 transitions. Word has length 384 [2018-10-24 14:00:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:00:55,246 INFO L481 AbstractCegarLoop]: Abstraction has 22282 states and 23963 transitions. [2018-10-24 14:00:55,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:00:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 22282 states and 23963 transitions. [2018-10-24 14:00:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-24 14:00:55,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:00:55,259 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:00:55,260 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:00:55,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:00:55,260 INFO L82 PathProgramCache]: Analyzing trace with hash 949268958, now seen corresponding path program 1 times [2018-10-24 14:00:55,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:00:55,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:00:55,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:55,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:55,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:00:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 90 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:00:56,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:00:56,460 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 14:00:56,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:00:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:00:56,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:01:00,184 WARN L179 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-10-24 14:01:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 90 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:01,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:01:01,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-24 14:01:01,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:01:01,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:01:01,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2018-10-24 14:01:01,313 INFO L87 Difference]: Start difference. First operand 22282 states and 23963 transitions. Second operand 9 states. [2018-10-24 14:01:02,732 WARN L179 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 20 Received shutdown request... [2018-10-24 14:03:46,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:03:46,292 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:03:46,298 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:03:46,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:03:46 BoogieIcfgContainer [2018-10-24 14:03:46,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:03:46,300 INFO L168 Benchmark]: Toolchain (without parser) took 252920.14 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -127.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 14:03:46,301 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-24 14:03:46,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 993.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:46,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 302.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:46,303 INFO L168 Benchmark]: Boogie Preprocessor took 136.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:46,304 INFO L168 Benchmark]: RCFGBuilder took 4788.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 176.0 MB). Peak memory consumption was 176.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:03:46,305 INFO L168 Benchmark]: TraceAbstraction took 246693.65 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 444.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:03:46,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 993.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 302.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4788.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 176.0 MB). Peak memory consumption was 176.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246693.65 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 444.7 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: 30]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 30). Cancelled while BasicCegarLoop was constructing difference of abstraction (22282states) and FLOYD_HOARE automaton (currently 11 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (22674 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 246.6s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 228.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2588 SDtfs, 12220 SDslu, 2459 SDs, 0 SdLazy, 30337 SolverSat, 5659 SolverUnsat, 201 SolverUnknown, 0 SolverNotchecked, 216.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1709 GetRequests, 1623 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24915occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 36784 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 4678 NumberOfCodeBlocks, 4678 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 4660 ConstructedInterpolants, 386 QuantifiedInterpolants, 10857412 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2243 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 2272/3658 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown