java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:46:37,206 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:46:37,208 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:46:37,221 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:46:37,221 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:46:37,222 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:46:37,223 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:46:37,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:46:37,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:46:37,227 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:46:37,228 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:46:37,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:46:37,230 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:46:37,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:46:37,232 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:46:37,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:46:37,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:46:37,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:46:37,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:46:37,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:46:37,246 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:46:37,247 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:46:37,252 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:46:37,269 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:46:37,298 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:46:37,300 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:46:37,301 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:46:37,301 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:46:37,302 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:46:37,302 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:46:37,302 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:46:37,303 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:46:37,303 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:46:37,303 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:46:37,303 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:46:37,304 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:46:37,304 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:46:37,304 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:46:37,304 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:46:37,304 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:46:37,304 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:46:37,305 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:46:37,305 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:46:37,305 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:46:37,305 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:46:37,305 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:46:37,306 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:46:37,306 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:46:37,306 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:46:37,306 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:46:37,306 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:46:37,307 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:46:37,365 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:46:37,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:46:37,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:46:37,389 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:46:37,390 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:46:37,390 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-10-24 14:46:37,453 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d67bffde/8b2b461e6e5b458d833489cf8fd1d420/FLAGd55ec3d9f [2018-10-24 14:46:38,279 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:46:38,280 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-10-24 14:46:38,322 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d67bffde/8b2b461e6e5b458d833489cf8fd1d420/FLAGd55ec3d9f [2018-10-24 14:46:38,339 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d67bffde/8b2b461e6e5b458d833489cf8fd1d420 [2018-10-24 14:46:38,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:46:38,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:46:38,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:46:38,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:46:38,359 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:46:38,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:46:38" (1/1) ... [2018-10-24 14:46:38,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48dbb4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:38, skipping insertion in model container [2018-10-24 14:46:38,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:46:38" (1/1) ... [2018-10-24 14:46:38,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:46:38,630 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:46:40,659 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:46:40,664 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:46:41,742 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:46:41,798 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:46:41,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41 WrapperNode [2018-10-24 14:46:41,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:46:41,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:46:41,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:46:41,801 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:46:41,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:41,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:42,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:46:42,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:46:42,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:46:42,831 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:46:42,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:42,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:42,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:42,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:43,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:43,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:43,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... [2018-10-24 14:46:43,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:46:43,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:46:43,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:46:43,729 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:46:43,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:46:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:46:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:46:43,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:47:00,374 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:47:00,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:00 BoogieIcfgContainer [2018-10-24 14:47:00,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:47:00,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:47:00,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:47:00,380 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:47:00,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:46:38" (1/3) ... [2018-10-24 14:47:00,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c5ddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:00, skipping insertion in model container [2018-10-24 14:47:00,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:41" (2/3) ... [2018-10-24 14:47:00,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c5ddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:00, skipping insertion in model container [2018-10-24 14:47:00,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:00" (3/3) ... [2018-10-24 14:47:00,384 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label50_false-unreach-call.c [2018-10-24 14:47:00,395 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:47:00,405 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:47:00,424 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:47:00,485 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:47:00,485 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:47:00,486 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:47:00,486 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:47:00,486 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:47:00,486 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:47:00,486 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:47:00,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:47:00,487 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:47:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 14:47:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 14:47:00,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:00,832 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] [2018-10-24 14:47:00,834 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:00,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1407492386, now seen corresponding path program 1 times [2018-10-24 14:47:00,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:00,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:00,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:00,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:00,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:01,274 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:47:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:47:01,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:47:01,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:47:01,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:47:01,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:47:01,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:01,307 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 14:47:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:47:26,823 INFO L93 Difference]: Finished difference Result 6322 states and 12078 transitions. [2018-10-24 14:47:26,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:47:26,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-24 14:47:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:47:26,881 INFO L225 Difference]: With dead ends: 6322 [2018-10-24 14:47:26,881 INFO L226 Difference]: Without dead ends: 4566 [2018-10-24 14:47:26,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-10-24 14:47:27,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4562. [2018-10-24 14:47:27,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4562 states. [2018-10-24 14:47:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 7763 transitions. [2018-10-24 14:47:27,230 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 7763 transitions. Word has length 21 [2018-10-24 14:47:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:47:27,231 INFO L481 AbstractCegarLoop]: Abstraction has 4562 states and 7763 transitions. [2018-10-24 14:47:27,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:47:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 7763 transitions. [2018-10-24 14:47:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 14:47:27,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:27,235 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:47:27,236 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:27,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:27,237 INFO L82 PathProgramCache]: Analyzing trace with hash -540128311, now seen corresponding path program 1 times [2018-10-24 14:47:27,238 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:27,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:27,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:47:27,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:47:27,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:47:27,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:47:27,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:47:27,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:27,613 INFO L87 Difference]: Start difference. First operand 4562 states and 7763 transitions. Second operand 4 states. [2018-10-24 14:47:57,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:47:57,909 INFO L93 Difference]: Finished difference Result 17536 states and 30099 transitions. [2018-10-24 14:47:57,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:47:57,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-10-24 14:47:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:47:57,976 INFO L225 Difference]: With dead ends: 17536 [2018-10-24 14:47:57,976 INFO L226 Difference]: Without dead ends: 12976 [2018-10-24 14:47:57,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:57,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2018-10-24 14:47:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8660. [2018-10-24 14:47:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-10-24 14:47:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14380 transitions. [2018-10-24 14:47:58,188 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14380 transitions. Word has length 91 [2018-10-24 14:47:58,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:47:58,189 INFO L481 AbstractCegarLoop]: Abstraction has 8660 states and 14380 transitions. [2018-10-24 14:47:58,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:47:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14380 transitions. [2018-10-24 14:47:58,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 14:47:58,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:58,193 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:47:58,194 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:58,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:58,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1353721238, now seen corresponding path program 1 times [2018-10-24 14:47:58,194 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:58,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:58,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:58,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:58,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:47:58,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:47:58,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:47:58,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:47:58,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:47:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:58,576 INFO L87 Difference]: Start difference. First operand 8660 states and 14380 transitions. Second operand 4 states. [2018-10-24 14:48:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:18,173 INFO L93 Difference]: Finished difference Result 33813 states and 56473 transitions. [2018-10-24 14:48:18,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:48:18,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-24 14:48:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:18,248 INFO L225 Difference]: With dead ends: 33813 [2018-10-24 14:48:18,248 INFO L226 Difference]: Without dead ends: 25155 [2018-10-24 14:48:18,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25155 states. [2018-10-24 14:48:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 16865. [2018-10-24 14:48:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16865 states. [2018-10-24 14:48:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 24314 transitions. [2018-10-24 14:48:18,646 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 24314 transitions. Word has length 113 [2018-10-24 14:48:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:18,648 INFO L481 AbstractCegarLoop]: Abstraction has 16865 states and 24314 transitions. [2018-10-24 14:48:18,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:48:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 24314 transitions. [2018-10-24 14:48:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 14:48:18,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:18,651 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:48:18,652 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:18,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:18,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2048785476, now seen corresponding path program 1 times [2018-10-24 14:48:18,652 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:18,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:18,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:18,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:18,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:48:19,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:19,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:48:19,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:48:19,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:48:19,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:19,011 INFO L87 Difference]: Start difference. First operand 16865 states and 24314 transitions. Second operand 4 states. [2018-10-24 14:48:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:39,772 INFO L93 Difference]: Finished difference Result 65426 states and 94868 transitions. [2018-10-24 14:48:39,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:48:39,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-10-24 14:48:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:39,876 INFO L225 Difference]: With dead ends: 65426 [2018-10-24 14:48:39,877 INFO L226 Difference]: Without dead ends: 48563 [2018-10-24 14:48:39,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48563 states. [2018-10-24 14:48:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48563 to 48550. [2018-10-24 14:48:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48550 states. [2018-10-24 14:48:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 63472 transitions. [2018-10-24 14:48:40,542 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 63472 transitions. Word has length 122 [2018-10-24 14:48:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:40,543 INFO L481 AbstractCegarLoop]: Abstraction has 48550 states and 63472 transitions. [2018-10-24 14:48:40,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:48:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 63472 transitions. [2018-10-24 14:48:40,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 14:48:40,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:40,549 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:48:40,550 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:40,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:40,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1069929104, now seen corresponding path program 1 times [2018-10-24 14:48:40,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:40,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:40,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:40,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:40,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 14:48:40,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:40,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:48:40,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:48:40,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:48:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:40,938 INFO L87 Difference]: Start difference. First operand 48550 states and 63472 transitions. Second operand 4 states. [2018-10-24 14:48:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:57,427 INFO L93 Difference]: Finished difference Result 112127 states and 144774 transitions. [2018-10-24 14:48:57,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:48:57,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2018-10-24 14:48:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:57,516 INFO L225 Difference]: With dead ends: 112127 [2018-10-24 14:48:57,517 INFO L226 Difference]: Without dead ends: 63579 [2018-10-24 14:48:57,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63579 states. [2018-10-24 14:48:58,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63579 to 63570. [2018-10-24 14:48:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63570 states. [2018-10-24 14:48:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63570 states to 63570 states and 77358 transitions. [2018-10-24 14:48:58,309 INFO L78 Accepts]: Start accepts. Automaton has 63570 states and 77358 transitions. Word has length 184 [2018-10-24 14:48:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:58,309 INFO L481 AbstractCegarLoop]: Abstraction has 63570 states and 77358 transitions. [2018-10-24 14:48:58,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:48:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 63570 states and 77358 transitions. [2018-10-24 14:48:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2018-10-24 14:48:58,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:58,335 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:48:58,336 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:58,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:58,336 INFO L82 PathProgramCache]: Analyzing trace with hash -134132952, now seen corresponding path program 1 times [2018-10-24 14:48:58,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:58,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:58,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:58,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:58,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:59,621 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 14:48:59,919 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-10-24 14:49:00,028 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-10-24 14:49:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-24 14:49:01,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:49:01,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 14:49:01,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:49:01,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:49:01,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:49:01,265 INFO L87 Difference]: Start difference. First operand 63570 states and 77358 transitions. Second operand 8 states. [2018-10-24 14:49:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:49:28,089 INFO L93 Difference]: Finished difference Result 174483 states and 212363 transitions. [2018-10-24 14:49:28,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 14:49:28,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 757 [2018-10-24 14:49:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:49:28,202 INFO L225 Difference]: With dead ends: 174483 [2018-10-24 14:49:28,202 INFO L226 Difference]: Without dead ends: 110915 [2018-10-24 14:49:28,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-24 14:49:28,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110915 states. [2018-10-24 14:49:28,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110915 to 64936. [2018-10-24 14:49:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64936 states. [2018-10-24 14:49:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64936 states to 64936 states and 78730 transitions. [2018-10-24 14:49:29,021 INFO L78 Accepts]: Start accepts. Automaton has 64936 states and 78730 transitions. Word has length 757 [2018-10-24 14:49:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:49:29,022 INFO L481 AbstractCegarLoop]: Abstraction has 64936 states and 78730 transitions. [2018-10-24 14:49:29,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:49:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 64936 states and 78730 transitions. [2018-10-24 14:49:29,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2018-10-24 14:49:29,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:49:29,050 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:49:29,051 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:49:29,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:49:29,051 INFO L82 PathProgramCache]: Analyzing trace with hash -76367971, now seen corresponding path program 1 times [2018-10-24 14:49:29,051 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:49:29,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:49:29,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:29,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:49:29,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:49:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-10-24 14:49:30,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:49:30,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:49:30,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:49:30,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:49:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:49:30,335 INFO L87 Difference]: Start difference. First operand 64936 states and 78730 transitions. Second operand 5 states. [2018-10-24 14:49:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:49:58,718 INFO L93 Difference]: Finished difference Result 229770 states and 282817 transitions. [2018-10-24 14:49:58,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:49:58,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 876 [2018-10-24 14:49:58,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:49:58,902 INFO L225 Difference]: With dead ends: 229770 [2018-10-24 14:49:58,903 INFO L226 Difference]: Without dead ends: 166202 [2018-10-24 14:49:58,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:49:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166202 states. [2018-10-24 14:50:00,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166202 to 127786. [2018-10-24 14:50:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127786 states. [2018-10-24 14:50:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127786 states to 127786 states and 154598 transitions. [2018-10-24 14:50:00,230 INFO L78 Accepts]: Start accepts. Automaton has 127786 states and 154598 transitions. Word has length 876 [2018-10-24 14:50:00,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:50:00,231 INFO L481 AbstractCegarLoop]: Abstraction has 127786 states and 154598 transitions. [2018-10-24 14:50:00,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:50:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 127786 states and 154598 transitions. [2018-10-24 14:50:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2018-10-24 14:50:00,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:50:00,265 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:50:00,265 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:50:00,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:50:00,265 INFO L82 PathProgramCache]: Analyzing trace with hash -339119137, now seen corresponding path program 1 times [2018-10-24 14:50:00,266 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:50:00,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:50:00,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:00,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:50:00,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:50:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 14:50:01,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:50:01,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:50:01,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:50:01,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:50:01,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:50:01,814 INFO L87 Difference]: Start difference. First operand 127786 states and 154598 transitions. Second operand 4 states. [2018-10-24 14:50:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:50:16,681 INFO L93 Difference]: Finished difference Result 254197 states and 307815 transitions. [2018-10-24 14:50:16,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:50:16,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 934 [2018-10-24 14:50:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:50:16,829 INFO L225 Difference]: With dead ends: 254197 [2018-10-24 14:50:16,829 INFO L226 Difference]: Without dead ends: 127779 [2018-10-24 14:50:16,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:50:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127779 states. [2018-10-24 14:50:18,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127779 to 116844. [2018-10-24 14:50:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116844 states. [2018-10-24 14:50:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116844 states to 116844 states and 134216 transitions. [2018-10-24 14:50:18,552 INFO L78 Accepts]: Start accepts. Automaton has 116844 states and 134216 transitions. Word has length 934 [2018-10-24 14:50:18,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:50:18,554 INFO L481 AbstractCegarLoop]: Abstraction has 116844 states and 134216 transitions. [2018-10-24 14:50:18,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:50:18,554 INFO L276 IsEmpty]: Start isEmpty. Operand 116844 states and 134216 transitions. [2018-10-24 14:50:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2018-10-24 14:50:18,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:50:18,568 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:50:18,568 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:50:18,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:50:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash -315963517, now seen corresponding path program 1 times [2018-10-24 14:50:18,569 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:50:18,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:50:18,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:18,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:50:18,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:50:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-10-24 14:50:19,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:50:19,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:50:19,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:50:19,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:50:19,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:50:19,508 INFO L87 Difference]: Start difference. First operand 116844 states and 134216 transitions. Second operand 3 states. [2018-10-24 14:50:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:50:33,715 INFO L93 Difference]: Finished difference Result 269201 states and 309855 transitions. [2018-10-24 14:50:33,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:50:33,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 960 [2018-10-24 14:50:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:50:33,878 INFO L225 Difference]: With dead ends: 269201 [2018-10-24 14:50:33,879 INFO L226 Difference]: Without dead ends: 153725 [2018-10-24 14:50:33,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:50:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153725 states. [2018-10-24 14:50:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153725 to 146894. [2018-10-24 14:50:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146894 states. [2018-10-24 14:50:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146894 states to 146894 states and 167208 transitions. [2018-10-24 14:50:36,077 INFO L78 Accepts]: Start accepts. Automaton has 146894 states and 167208 transitions. Word has length 960 [2018-10-24 14:50:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:50:36,077 INFO L481 AbstractCegarLoop]: Abstraction has 146894 states and 167208 transitions. [2018-10-24 14:50:36,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:50:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 146894 states and 167208 transitions. [2018-10-24 14:50:36,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1018 [2018-10-24 14:50:36,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:50:36,092 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:50:36,092 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:50:36,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:50:36,093 INFO L82 PathProgramCache]: Analyzing trace with hash 523098409, now seen corresponding path program 1 times [2018-10-24 14:50:36,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:50:36,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:50:36,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:36,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:50:36,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:50:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2018-10-24 14:50:38,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:50:38,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:50:38,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:50:38,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:50:38,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:50:38,274 INFO L87 Difference]: Start difference. First operand 146894 states and 167208 transitions. Second operand 3 states. Received shutdown request... [2018-10-24 14:50:38,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 14:50:38,528 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:50:38,535 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:50:38,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:50:38 BoogieIcfgContainer [2018-10-24 14:50:38,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:50:38,537 INFO L168 Benchmark]: Toolchain (without parser) took 240184.26 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 14:50:38,538 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:50:38,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3443.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 978.2 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:38,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 1030.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 822.6 MB). Free memory was 978.2 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:38,541 INFO L168 Benchmark]: Boogie Preprocessor took 897.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 105.3 MB). Peak memory consumption was 105.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:38,542 INFO L168 Benchmark]: RCFGBuilder took 16646.23 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 262.7 MB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 526.4 MB). Peak memory consumption was 789.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:38,543 INFO L168 Benchmark]: TraceAbstraction took 218160.44 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:38,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3443.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 978.2 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1030.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 822.6 MB). Free memory was 978.2 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 897.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 105.3 MB). Peak memory consumption was 105.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16646.23 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 262.7 MB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 526.4 MB). Peak memory consumption was 789.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218160.44 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (146894states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (140 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 218.0s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 198.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14503 SDtfs, 39387 SDslu, 8961 SDs, 0 SdLazy, 74232 SolverSat, 20739 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 170.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146894occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 114793 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 5075 NumberOfCodeBlocks, 5075 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5065 ConstructedInterpolants, 0 QuantifiedInterpolants, 10413606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 3247/3247 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown