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_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:03:06,487 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:03:06,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:03:06,501 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:03:06,502 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:03:06,503 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:03:06,504 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:03:06,506 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:03:06,507 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:03:06,508 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:03:06,509 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:03:06,509 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:03:06,510 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:03:06,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:03:06,513 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:03:06,513 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:03:06,514 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:03:06,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:03:06,518 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:03:06,520 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:03:06,521 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:03:06,522 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:03:06,524 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:03:06,525 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:03:06,525 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:03:06,526 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:03:06,527 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:03:06,527 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:03:06,528 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:03:06,529 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:03:06,529 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:03:06,530 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:03:06,533 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 [2018-10-23 20:03:06,555 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:03:06,556 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:03:06,556 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:03:06,558 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:03:06,558 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:03:06,559 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:03:06,559 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:03:06,559 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:03:06,559 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:03:06,560 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:03:06,561 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:03:06,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:03:06,561 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:03:06,561 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:03:06,561 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:03:06,562 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:03:06,562 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:03:06,562 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:03:06,562 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:03:06,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:03:06,563 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:03:06,564 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:03:06,564 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:03:06,564 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:03:06,565 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:03:06,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:03:06,565 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:03:06,565 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:03:06,623 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:03:06,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:03:06,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:03:06,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:03:06,643 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:03:06,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-10-23 20:03:06,707 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28327691a/5c800a84c88a4615bda9b4258e541c55/FLAG5ede86d40 [2018-10-23 20:03:07,362 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:03:07,365 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label40_true-unreach-call.c [2018-10-23 20:03:07,380 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28327691a/5c800a84c88a4615bda9b4258e541c55/FLAG5ede86d40 [2018-10-23 20:03:07,396 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28327691a/5c800a84c88a4615bda9b4258e541c55 [2018-10-23 20:03:07,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:03:07,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:03:07,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:03:07,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:03:07,414 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:03:07,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:03:07" (1/1) ... [2018-10-23 20:03:07,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436ba03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:07, skipping insertion in model container [2018-10-23 20:03:07,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:03:07" (1/1) ... [2018-10-23 20:03:07,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:03:07,493 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:03:08,038 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:03:08,043 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:03:08,236 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:03:08,256 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:03:08,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08 WrapperNode [2018-10-23 20:03:08,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:03:08,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:03:08,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:03:08,258 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:03:08,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:03:08,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:03:08,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:03:08,527 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:03:08,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (1/1) ... [2018-10-23 20:03:08,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:03:08,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:03:08,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:03:08,688 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:03:08,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (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 [2018-10-23 20:03:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:03:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:03:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:03:13,705 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:03:13,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:03:13 BoogieIcfgContainer [2018-10-23 20:03:13,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:03:13,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:03:13,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:03:13,715 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:03:13,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:03:07" (1/3) ... [2018-10-23 20:03:13,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31668bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:03:13, skipping insertion in model container [2018-10-23 20:03:13,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:03:08" (2/3) ... [2018-10-23 20:03:13,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31668bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:03:13, skipping insertion in model container [2018-10-23 20:03:13,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:03:13" (3/3) ... [2018-10-23 20:03:13,721 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label40_true-unreach-call.c [2018-10-23 20:03:13,731 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:03:13,741 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:03:13,759 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:03:13,796 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:03:13,797 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:03:13,797 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:03:13,797 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:03:13,798 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:03:13,798 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:03:13,801 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:03:13,801 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:03:13,801 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:03:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-23 20:03:13,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-23 20:03:13,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:13,849 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] [2018-10-23 20:03:13,852 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:13,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:13,858 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-23 20:03:13,860 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:13,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:13,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:13,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:13,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:03:14,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:03:14,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:03:14,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:03:14,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:03:14,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:03:14,346 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-23 20:03:17,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:03:17,900 INFO L93 Difference]: Finished difference Result 955 states and 1722 transitions. [2018-10-23 20:03:17,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:03:17,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-23 20:03:17,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:03:17,927 INFO L225 Difference]: With dead ends: 955 [2018-10-23 20:03:17,927 INFO L226 Difference]: Without dead ends: 664 [2018-10-23 20:03:17,932 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 [2018-10-23 20:03:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2018-10-23 20:03:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 472. [2018-10-23 20:03:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2018-10-23 20:03:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 716 transitions. [2018-10-23 20:03:18,021 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 716 transitions. Word has length 45 [2018-10-23 20:03:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:03:18,022 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 716 transitions. [2018-10-23 20:03:18,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:03:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 716 transitions. [2018-10-23 20:03:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-23 20:03:18,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:18,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:03:18,028 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:18,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:18,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1700157718, now seen corresponding path program 1 times [2018-10-23 20:03:18,029 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:18,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:18,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:18,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:18,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:03:18,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:03:18,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:03:18,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:03:18,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:03:18,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:03:18,430 INFO L87 Difference]: Start difference. First operand 472 states and 716 transitions. Second operand 4 states. [2018-10-23 20:03:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:03:22,601 INFO L93 Difference]: Finished difference Result 1700 states and 2661 transitions. [2018-10-23 20:03:22,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:03:22,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-23 20:03:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:03:22,611 INFO L225 Difference]: With dead ends: 1700 [2018-10-23 20:03:22,612 INFO L226 Difference]: Without dead ends: 1230 [2018-10-23 20:03:22,615 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 [2018-10-23 20:03:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2018-10-23 20:03:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1216. [2018-10-23 20:03:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2018-10-23 20:03:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1756 transitions. [2018-10-23 20:03:22,674 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1756 transitions. Word has length 114 [2018-10-23 20:03:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:03:22,674 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1756 transitions. [2018-10-23 20:03:22,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:03:22,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1756 transitions. [2018-10-23 20:03:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-23 20:03:22,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:22,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:03:22,679 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:22,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:22,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1258966910, now seen corresponding path program 1 times [2018-10-23 20:03:22,680 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:22,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:22,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:22,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:22,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:03:22,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:03:22,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:03:22,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:03:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:03:22,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:03:22,883 INFO L87 Difference]: Start difference. First operand 1216 states and 1756 transitions. Second operand 4 states. [2018-10-23 20:03:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:03:26,834 INFO L93 Difference]: Finished difference Result 4494 states and 6609 transitions. [2018-10-23 20:03:26,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:03:26,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-10-23 20:03:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:03:26,851 INFO L225 Difference]: With dead ends: 4494 [2018-10-23 20:03:26,852 INFO L226 Difference]: Without dead ends: 3280 [2018-10-23 20:03:26,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:03:26,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2018-10-23 20:03:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2327. [2018-10-23 20:03:26,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2018-10-23 20:03:26,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3050 transitions. [2018-10-23 20:03:26,908 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3050 transitions. Word has length 122 [2018-10-23 20:03:26,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:03:26,909 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3050 transitions. [2018-10-23 20:03:26,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:03:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3050 transitions. [2018-10-23 20:03:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-23 20:03:26,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:26,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:03:26,914 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:26,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1763364140, now seen corresponding path program 1 times [2018-10-23 20:03:26,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:26,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:26,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:26,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:26,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:03:27,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:03:27,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:03:27,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:03:27,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:03:27,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:03:27,333 INFO L87 Difference]: Start difference. First operand 2327 states and 3050 transitions. Second operand 5 states. [2018-10-23 20:03:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:03:32,442 INFO L93 Difference]: Finished difference Result 8397 states and 11572 transitions. [2018-10-23 20:03:32,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:03:32,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2018-10-23 20:03:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:03:32,472 INFO L225 Difference]: With dead ends: 8397 [2018-10-23 20:03:32,472 INFO L226 Difference]: Without dead ends: 6257 [2018-10-23 20:03:32,476 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 [2018-10-23 20:03:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2018-10-23 20:03:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6256. [2018-10-23 20:03:32,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6256 states. [2018-10-23 20:03:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6256 states to 6256 states and 8206 transitions. [2018-10-23 20:03:32,596 INFO L78 Accepts]: Start accepts. Automaton has 6256 states and 8206 transitions. Word has length 173 [2018-10-23 20:03:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:03:32,597 INFO L481 AbstractCegarLoop]: Abstraction has 6256 states and 8206 transitions. [2018-10-23 20:03:32,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:03:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 6256 states and 8206 transitions. [2018-10-23 20:03:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-23 20:03:32,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:32,605 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:03:32,605 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:32,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:32,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1860336133, now seen corresponding path program 1 times [2018-10-23 20:03:32,606 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:32,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:32,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:32,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:32,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-23 20:03:33,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:03:33,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:03:33,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:03:33,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:03:33,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:03:33,058 INFO L87 Difference]: Start difference. First operand 6256 states and 8206 transitions. Second operand 4 states. [2018-10-23 20:03:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:03:35,658 INFO L93 Difference]: Finished difference Result 14198 states and 18819 transitions. [2018-10-23 20:03:35,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:03:35,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2018-10-23 20:03:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:03:35,691 INFO L225 Difference]: With dead ends: 14198 [2018-10-23 20:03:35,692 INFO L226 Difference]: Without dead ends: 8129 [2018-10-23 20:03:35,701 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 [2018-10-23 20:03:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2018-10-23 20:03:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 8106. [2018-10-23 20:03:35,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8106 states. [2018-10-23 20:03:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 10275 transitions. [2018-10-23 20:03:35,837 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 10275 transitions. Word has length 251 [2018-10-23 20:03:35,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:03:35,838 INFO L481 AbstractCegarLoop]: Abstraction has 8106 states and 10275 transitions. [2018-10-23 20:03:35,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:03:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 10275 transitions. [2018-10-23 20:03:35,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-23 20:03:35,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:35,851 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:03:35,851 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:35,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:35,852 INFO L82 PathProgramCache]: Analyzing trace with hash -887588984, now seen corresponding path program 1 times [2018-10-23 20:03:35,852 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:35,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:35,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:35,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:35,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:36,273 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-23 20:03:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-23 20:03:36,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:03:36,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:03:36,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:03:36,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:03:36,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:03:36,324 INFO L87 Difference]: Start difference. First operand 8106 states and 10275 transitions. Second operand 4 states. [2018-10-23 20:03:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:03:38,484 INFO L93 Difference]: Finished difference Result 17893 states and 22908 transitions. [2018-10-23 20:03:38,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:03:38,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2018-10-23 20:03:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:03:38,551 INFO L225 Difference]: With dead ends: 17893 [2018-10-23 20:03:38,552 INFO L226 Difference]: Without dead ends: 9974 [2018-10-23 20:03:38,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:03:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2018-10-23 20:03:38,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 9771. [2018-10-23 20:03:38,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9771 states. [2018-10-23 20:03:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9771 states to 9771 states and 12053 transitions. [2018-10-23 20:03:38,712 INFO L78 Accepts]: Start accepts. Automaton has 9771 states and 12053 transitions. Word has length 331 [2018-10-23 20:03:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:03:38,712 INFO L481 AbstractCegarLoop]: Abstraction has 9771 states and 12053 transitions. [2018-10-23 20:03:38,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:03:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9771 states and 12053 transitions. [2018-10-23 20:03:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-23 20:03:38,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:38,728 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:03:38,728 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:38,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:38,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1750501443, now seen corresponding path program 1 times [2018-10-23 20:03:38,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:38,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:38,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:38,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:38,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-23 20:03:39,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:03:39,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:03:39,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:03:39,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:03:39,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:03:39,072 INFO L87 Difference]: Start difference. First operand 9771 states and 12053 transitions. Second operand 3 states. [2018-10-23 20:03:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:03:40,103 INFO L93 Difference]: Finished difference Result 20471 states and 25180 transitions. [2018-10-23 20:03:40,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:03:40,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2018-10-23 20:03:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:03:40,129 INFO L225 Difference]: With dead ends: 20471 [2018-10-23 20:03:40,129 INFO L226 Difference]: Without dead ends: 9575 [2018-10-23 20:03:40,141 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 [2018-10-23 20:03:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2018-10-23 20:03:40,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 9572. [2018-10-23 20:03:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9572 states. [2018-10-23 20:03:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9572 states to 9572 states and 11569 transitions. [2018-10-23 20:03:40,259 INFO L78 Accepts]: Start accepts. Automaton has 9572 states and 11569 transitions. Word has length 340 [2018-10-23 20:03:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:03:40,260 INFO L481 AbstractCegarLoop]: Abstraction has 9572 states and 11569 transitions. [2018-10-23 20:03:40,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:03:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 9572 states and 11569 transitions. [2018-10-23 20:03:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-23 20:03:40,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:40,275 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:03:40,276 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:40,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:40,276 INFO L82 PathProgramCache]: Analyzing trace with hash -623402235, now seen corresponding path program 1 times [2018-10-23 20:03:40,276 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:40,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:40,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:40,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:40,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 167 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:03:41,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:03:41,275 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 [2018-10-23 20:03:41,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:41,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:03:42,151 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 [2018-10-23 20:03:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 167 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:03:42,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:03:42,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-10-23 20:03:42,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:03:42,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:03:42,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:03:42,662 INFO L87 Difference]: Start difference. First operand 9572 states and 11569 transitions. Second operand 9 states. [2018-10-23 20:03:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:03:54,458 INFO L93 Difference]: Finished difference Result 34574 states and 42645 transitions. [2018-10-23 20:03:54,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 20:03:54,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 345 [2018-10-23 20:03:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:03:54,507 INFO L225 Difference]: With dead ends: 34574 [2018-10-23 20:03:54,507 INFO L226 Difference]: Without dead ends: 25189 [2018-10-23 20:03:54,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2018-10-23 20:03:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25189 states. [2018-10-23 20:03:55,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25189 to 16973. [2018-10-23 20:03:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16973 states. [2018-10-23 20:03:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16973 states to 16973 states and 19725 transitions. [2018-10-23 20:03:55,077 INFO L78 Accepts]: Start accepts. Automaton has 16973 states and 19725 transitions. Word has length 345 [2018-10-23 20:03:55,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:03:55,077 INFO L481 AbstractCegarLoop]: Abstraction has 16973 states and 19725 transitions. [2018-10-23 20:03:55,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:03:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 16973 states and 19725 transitions. [2018-10-23 20:03:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-10-23 20:03:55,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:03:55,098 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:03:55,099 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:03:55,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:03:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash -292184617, now seen corresponding path program 1 times [2018-10-23 20:03:55,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:03:55,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:03:55,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:55,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:55,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:03:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 266 proven. 106 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-23 20:03:55,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:03:55,833 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 [2018-10-23 20:03:55,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:03:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:03:55,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:03:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-23 20:03:56,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:03:56,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-23 20:03:56,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:03:56,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:03:56,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:03:56,254 INFO L87 Difference]: Start difference. First operand 16973 states and 19725 transitions. Second operand 9 states. [2018-10-23 20:04:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:04:05,919 INFO L93 Difference]: Finished difference Result 49720 states and 57126 transitions. [2018-10-23 20:04:05,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-23 20:04:05,920 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 356 [2018-10-23 20:04:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:04:05,967 INFO L225 Difference]: With dead ends: 49720 [2018-10-23 20:04:05,967 INFO L226 Difference]: Without dead ends: 23614 [2018-10-23 20:04:05,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-10-23 20:04:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23614 states. [2018-10-23 20:04:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23614 to 19342. [2018-10-23 20:04:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19342 states. [2018-10-23 20:04:06,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19342 states to 19342 states and 21245 transitions. [2018-10-23 20:04:06,251 INFO L78 Accepts]: Start accepts. Automaton has 19342 states and 21245 transitions. Word has length 356 [2018-10-23 20:04:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:04:06,253 INFO L481 AbstractCegarLoop]: Abstraction has 19342 states and 21245 transitions. [2018-10-23 20:04:06,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:04:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 19342 states and 21245 transitions. [2018-10-23 20:04:06,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-23 20:04:06,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:04:06,281 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:04:06,281 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:04:06,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:04:06,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1238625643, now seen corresponding path program 1 times [2018-10-23 20:04:06,282 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:04:06,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:04:06,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:06,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:06,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 0 proven. 604 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-23 20:04:06,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:04:06,985 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 [2018-10-23 20:04:06,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:07,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:04:07,479 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 548 DAG size of output: 29 [2018-10-23 20:04:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 390 proven. 43 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-10-23 20:04:08,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:04:08,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-23 20:04:08,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:04:08,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:04:08,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:04:08,602 INFO L87 Difference]: Start difference. First operand 19342 states and 21245 transitions. Second operand 8 states. [2018-10-23 20:04:19,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:04:19,076 INFO L93 Difference]: Finished difference Result 48355 states and 53253 transitions. [2018-10-23 20:04:19,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 20:04:19,080 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2018-10-23 20:04:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:04:19,112 INFO L225 Difference]: With dead ends: 48355 [2018-10-23 20:04:19,112 INFO L226 Difference]: Without dead ends: 28076 [2018-10-23 20:04:19,122 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 440 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-10-23 20:04:19,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28076 states. [2018-10-23 20:04:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28076 to 21191. [2018-10-23 20:04:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21191 states. [2018-10-23 20:04:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21191 states to 21191 states and 23098 transitions. [2018-10-23 20:04:19,406 INFO L78 Accepts]: Start accepts. Automaton has 21191 states and 23098 transitions. Word has length 431 [2018-10-23 20:04:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:04:19,406 INFO L481 AbstractCegarLoop]: Abstraction has 21191 states and 23098 transitions. [2018-10-23 20:04:19,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:04:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 21191 states and 23098 transitions. [2018-10-23 20:04:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-10-23 20:04:19,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:04:19,437 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:04:19,437 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:04:19,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:04:19,438 INFO L82 PathProgramCache]: Analyzing trace with hash -211960133, now seen corresponding path program 1 times [2018-10-23 20:04:19,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:04:19,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:04:19,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:19,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:19,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:20,377 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-10-23 20:04:20,830 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 20:04:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 182 proven. 465 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-23 20:04:21,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:04:21,159 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 [2018-10-23 20:04:21,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:21,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:04:22,132 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-10-23 20:04:22,535 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 521 DAG size of output: 29 [2018-10-23 20:04:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 308 proven. 339 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-23 20:04:23,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:04:23,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2018-10-23 20:04:23,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 20:04:23,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 20:04:23,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:04:23,256 INFO L87 Difference]: Start difference. First operand 21191 states and 23098 transitions. Second operand 12 states. [2018-10-23 20:04:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:04:33,944 INFO L93 Difference]: Finished difference Result 45527 states and 49671 transitions. [2018-10-23 20:04:33,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 20:04:33,945 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 464 [2018-10-23 20:04:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:04:33,967 INFO L225 Difference]: With dead ends: 45527 [2018-10-23 20:04:33,967 INFO L226 Difference]: Without dead ends: 23970 [2018-10-23 20:04:33,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2018-10-23 20:04:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23970 states. [2018-10-23 20:04:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23970 to 16595. [2018-10-23 20:04:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16595 states. [2018-10-23 20:04:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16595 states to 16595 states and 17775 transitions. [2018-10-23 20:04:34,221 INFO L78 Accepts]: Start accepts. Automaton has 16595 states and 17775 transitions. Word has length 464 [2018-10-23 20:04:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:04:34,222 INFO L481 AbstractCegarLoop]: Abstraction has 16595 states and 17775 transitions. [2018-10-23 20:04:34,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 20:04:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 16595 states and 17775 transitions. [2018-10-23 20:04:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-10-23 20:04:34,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:04:34,242 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 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] [2018-10-23 20:04:34,242 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:04:34,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:04:34,243 INFO L82 PathProgramCache]: Analyzing trace with hash -72513983, now seen corresponding path program 1 times [2018-10-23 20:04:34,243 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:04:34,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:04:34,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:34,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:34,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2018-10-23 20:04:34,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:04:34,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:04:34,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:04:34,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:04:34,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:04:34,831 INFO L87 Difference]: Start difference. First operand 16595 states and 17775 transitions. Second operand 4 states. [2018-10-23 20:04:35,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:04:35,931 INFO L93 Difference]: Finished difference Result 30779 states and 33004 transitions. [2018-10-23 20:04:35,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:04:35,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 549 [2018-10-23 20:04:35,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:04:35,947 INFO L225 Difference]: With dead ends: 30779 [2018-10-23 20:04:35,947 INFO L226 Difference]: Without dead ends: 16223 [2018-10-23 20:04:35,957 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 [2018-10-23 20:04:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16223 states. [2018-10-23 20:04:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16223 to 14922. [2018-10-23 20:04:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14922 states. [2018-10-23 20:04:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14922 states to 14922 states and 15952 transitions. [2018-10-23 20:04:36,286 INFO L78 Accepts]: Start accepts. Automaton has 14922 states and 15952 transitions. Word has length 549 [2018-10-23 20:04:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:04:36,287 INFO L481 AbstractCegarLoop]: Abstraction has 14922 states and 15952 transitions. [2018-10-23 20:04:36,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:04:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 14922 states and 15952 transitions. [2018-10-23 20:04:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-10-23 20:04:36,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:04:36,309 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:04:36,309 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:04:36,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:04:36,309 INFO L82 PathProgramCache]: Analyzing trace with hash -448766609, now seen corresponding path program 1 times [2018-10-23 20:04:36,309 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:04:36,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:04:36,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:36,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:36,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:36,852 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-23 20:04:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 875 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-10-23 20:04:36,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:04:36,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:04:36,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:04:36,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:04:36,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:04:36,969 INFO L87 Difference]: Start difference. First operand 14922 states and 15952 transitions. Second operand 4 states. [2018-10-23 20:04:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:04:38,737 INFO L93 Difference]: Finished difference Result 29852 states and 31910 transitions. [2018-10-23 20:04:38,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:04:38,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 555 [2018-10-23 20:04:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:04:38,753 INFO L225 Difference]: With dead ends: 29852 [2018-10-23 20:04:38,753 INFO L226 Difference]: Without dead ends: 16410 [2018-10-23 20:04:38,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:04:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16410 states. [2018-10-23 20:04:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16410 to 14550. [2018-10-23 20:04:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14550 states. [2018-10-23 20:04:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14550 states to 14550 states and 15489 transitions. [2018-10-23 20:04:38,915 INFO L78 Accepts]: Start accepts. Automaton has 14550 states and 15489 transitions. Word has length 555 [2018-10-23 20:04:38,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:04:38,916 INFO L481 AbstractCegarLoop]: Abstraction has 14550 states and 15489 transitions. [2018-10-23 20:04:38,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:04:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 14550 states and 15489 transitions. [2018-10-23 20:04:38,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-10-23 20:04:38,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:04:38,928 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:04:38,929 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:04:38,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:04:38,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1693902381, now seen corresponding path program 1 times [2018-10-23 20:04:38,929 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:04:38,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:04:38,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:38,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:38,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2018-10-23 20:04:39,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:04:39,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:04:39,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:04:39,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:04:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:04:39,400 INFO L87 Difference]: Start difference. First operand 14550 states and 15489 transitions. Second operand 5 states. [2018-10-23 20:04:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:04:41,631 INFO L93 Difference]: Finished difference Result 27991 states and 29842 transitions. [2018-10-23 20:04:41,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:04:41,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 566 [2018-10-23 20:04:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:04:41,645 INFO L225 Difference]: With dead ends: 27991 [2018-10-23 20:04:41,645 INFO L226 Difference]: Without dead ends: 15108 [2018-10-23 20:04:41,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:04:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15108 states. [2018-10-23 20:04:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15108 to 13809. [2018-10-23 20:04:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13809 states. [2018-10-23 20:04:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13809 states to 13809 states and 14653 transitions. [2018-10-23 20:04:41,772 INFO L78 Accepts]: Start accepts. Automaton has 13809 states and 14653 transitions. Word has length 566 [2018-10-23 20:04:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:04:41,773 INFO L481 AbstractCegarLoop]: Abstraction has 13809 states and 14653 transitions. [2018-10-23 20:04:41,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:04:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 13809 states and 14653 transitions. [2018-10-23 20:04:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2018-10-23 20:04:41,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:04:41,782 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:04:41,783 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:04:41,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:04:41,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1644792320, now seen corresponding path program 1 times [2018-10-23 20:04:41,783 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:04:41,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:04:41,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:41,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:41,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:42,360 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 20:04:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 845 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-10-23 20:04:43,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:04:43,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:04:43,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:04:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:04:43,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:04:43,077 INFO L87 Difference]: Start difference. First operand 13809 states and 14653 transitions. Second operand 4 states. [2018-10-23 20:04:44,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:04:44,626 INFO L93 Difference]: Finished difference Result 26707 states and 28341 transitions. [2018-10-23 20:04:44,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:04:44,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 587 [2018-10-23 20:04:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:04:44,641 INFO L225 Difference]: With dead ends: 26707 [2018-10-23 20:04:44,641 INFO L226 Difference]: Without dead ends: 14565 [2018-10-23 20:04:44,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:04:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14565 states. [2018-10-23 20:04:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14565 to 13439. [2018-10-23 20:04:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13439 states. [2018-10-23 20:04:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13439 states to 13439 states and 14238 transitions. [2018-10-23 20:04:44,765 INFO L78 Accepts]: Start accepts. Automaton has 13439 states and 14238 transitions. Word has length 587 [2018-10-23 20:04:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:04:44,765 INFO L481 AbstractCegarLoop]: Abstraction has 13439 states and 14238 transitions. [2018-10-23 20:04:44,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:04:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 13439 states and 14238 transitions. [2018-10-23 20:04:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2018-10-23 20:04:44,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:04:44,776 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-23 20:04:44,777 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:04:44,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:04:44,777 INFO L82 PathProgramCache]: Analyzing trace with hash 623141152, now seen corresponding path program 1 times [2018-10-23 20:04:44,777 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:04:44,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:04:44,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:44,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:44,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 134 proven. 1073 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-23 20:04:46,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:04:46,816 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 [2018-10-23 20:04:46,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:47,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:04:48,022 WARN L179 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2018-10-23 20:04:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 434 proven. 773 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-10-23 20:04:49,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:04:49,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2018-10-23 20:04:49,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 20:04:49,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 20:04:49,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:04:49,795 INFO L87 Difference]: Start difference. First operand 13439 states and 14238 transitions. Second operand 12 states. [2018-10-23 20:04:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:04:56,835 INFO L93 Difference]: Finished difference Result 34308 states and 36289 transitions. [2018-10-23 20:04:56,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 20:04:56,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 722 [2018-10-23 20:04:56,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:04:56,858 INFO L225 Difference]: With dead ends: 34308 [2018-10-23 20:04:56,858 INFO L226 Difference]: Without dead ends: 22166 [2018-10-23 20:04:56,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 717 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-10-23 20:04:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22166 states. [2018-10-23 20:04:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22166 to 14369. [2018-10-23 20:04:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14369 states. [2018-10-23 20:04:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14369 states to 14369 states and 15209 transitions. [2018-10-23 20:04:57,036 INFO L78 Accepts]: Start accepts. Automaton has 14369 states and 15209 transitions. Word has length 722 [2018-10-23 20:04:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:04:57,036 INFO L481 AbstractCegarLoop]: Abstraction has 14369 states and 15209 transitions. [2018-10-23 20:04:57,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 20:04:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 14369 states and 15209 transitions. [2018-10-23 20:04:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2018-10-23 20:04:57,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:04:57,052 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2018-10-23 20:04:57,053 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:04:57,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:04:57,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2135794138, now seen corresponding path program 1 times [2018-10-23 20:04:57,053 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:04:57,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:04:57,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:57,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:57,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:04:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:57,979 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-23 20:04:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1514 proven. 116 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-10-23 20:04:58,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:04:58,846 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:04:58,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:04:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:04:59,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:05:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1402 proven. 86 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2018-10-23 20:05:01,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:05:01,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-23 20:05:01,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:05:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:05:01,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:05:01,843 INFO L87 Difference]: Start difference. First operand 14369 states and 15209 transitions. Second operand 8 states. [2018-10-23 20:05:14,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:05:14,138 INFO L93 Difference]: Finished difference Result 38747 states and 41017 transitions. [2018-10-23 20:05:14,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 20:05:14,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 817 [2018-10-23 20:05:14,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:05:14,163 INFO L225 Difference]: With dead ends: 38747 [2018-10-23 20:05:14,164 INFO L226 Difference]: Without dead ends: 24937 [2018-10-23 20:05:14,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 823 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-10-23 20:05:14,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24937 states. [2018-10-23 20:05:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24937 to 18087. [2018-10-23 20:05:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18087 states. [2018-10-23 20:05:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18087 states to 18087 states and 19125 transitions. [2018-10-23 20:05:14,388 INFO L78 Accepts]: Start accepts. Automaton has 18087 states and 19125 transitions. Word has length 817 [2018-10-23 20:05:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:05:14,388 INFO L481 AbstractCegarLoop]: Abstraction has 18087 states and 19125 transitions. [2018-10-23 20:05:14,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:05:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 18087 states and 19125 transitions. [2018-10-23 20:05:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2018-10-23 20:05:14,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:05:14,409 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:05:14,409 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:05:14,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:05:14,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1332906654, now seen corresponding path program 2 times [2018-10-23 20:05:14,410 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:05:14,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:05:14,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:14,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:05:14,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:05:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:05:14,995 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:05:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1478 proven. 43 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2018-10-23 20:05:15,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:05:15,613 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:05:15,622 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 20:05:15,882 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 20:05:15,882 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 20:05:15,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:05:16,803 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a23~0_483 Int)) (let ((.cse0 (mod (+ v_~a23~0_483 135992) 299846))) (and (< (+ v_~a23~0_483 435838) 0) (<= c_~a23~0 (+ .cse0 306)) (not (= 0 .cse0))))) (exists ((v_prenex_179 Int)) (let ((.cse1 (mod (+ v_prenex_179 135992) 299846))) (and (= 0 .cse1) (<= c_~a23~0 (+ .cse1 300152))))) (exists ((v_prenex_180 Int)) (and (<= c_~a23~0 (+ (mod (+ v_prenex_180 135992) 299846) 300152)) (<= 0 (+ v_prenex_180 435838))))) is different from true [2018-10-23 20:05:18,847 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 40 DAG size of output: 18 [2018-10-23 20:05:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1344 proven. 43 refuted. 0 times theorem prover too weak. 1209 trivial. 134 not checked. [2018-10-23 20:05:21,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:05:21,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2018-10-23 20:05:21,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:05:21,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:05:21,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=25, Unknown=2, NotChecked=10, Total=56 [2018-10-23 20:05:21,152 INFO L87 Difference]: Start difference. First operand 18087 states and 19125 transitions. Second operand 8 states. [2018-10-23 20:06:10,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:06:10,570 INFO L93 Difference]: Finished difference Result 38232 states and 40389 transitions. [2018-10-23 20:06:10,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:06:10,570 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 984 [2018-10-23 20:06:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:06:10,571 INFO L225 Difference]: With dead ends: 38232 [2018-10-23 20:06:10,572 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 20:06:10,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 982 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=19, Invalid=25, Unknown=2, NotChecked=10, Total=56 [2018-10-23 20:06:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 20:06:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 20:06:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 20:06:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 20:06:10,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 984 [2018-10-23 20:06:10,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:06:10,586 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 20:06:10,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:06:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 20:06:10,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 20:06:10,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 20:06:10,715 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:10,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:11,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:11,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:11,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:12,039 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:12,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:12,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:12,220 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:12,360 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:13,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:13,366 WARN L179 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 961 DAG size of output: 849 [2018-10-23 20:06:13,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:13,468 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:13,827 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:14,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:14,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:14,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:14,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:14,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:14,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:14,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:15,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:06:15,304 WARN L179 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 973 DAG size of output: 868 Received shutdown request... [2018-10-23 20:07:04,504 WARN L187 SmtUtils]: Removed 34 from assertion stack [2018-10-23 20:07:04,505 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-23 20:07:04,506 INFO L168 Benchmark]: Toolchain (without parser) took 237097.87 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 20:07:04,507 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-23 20:07:04,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 847.37 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:07:04,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 267.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:07:04,509 INFO L168 Benchmark]: Boogie Preprocessor took 161.05 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:07:04,509 INFO L168 Benchmark]: RCFGBuilder took 5018.57 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: 199.2 MB). Peak memory consumption was 199.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:07:04,511 INFO L168 Benchmark]: TraceAbstraction took 230797.97 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 20:07:04,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 847.37 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 267.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.05 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5018.57 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: 199.2 MB). Peak memory consumption was 199.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230797.97 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 831. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown