java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:11:28,503 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:11:28,505 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:11:28,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:11:28,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:11:28,518 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:11:28,520 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:11:28,521 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:11:28,523 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:11:28,524 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:11:28,525 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:11:28,525 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:11:28,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:11:28,527 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:11:28,528 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:11:28,529 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:11:28,530 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:11:28,532 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:11:28,534 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:11:28,535 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:11:28,536 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:11:28,537 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:11:28,540 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:11:28,540 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:11:28,540 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:11:28,541 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:11:28,542 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:11:28,542 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:11:28,543 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:11:28,544 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:11:28,544 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:11:28,545 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:11:28,545 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:11:28,546 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:11:28,546 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:11:28,547 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:11:28,547 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:11:28,562 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:11:28,563 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:11:28,564 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:11:28,564 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:11:28,564 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:11:28,564 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:11:28,564 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:11:28,565 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:11:28,565 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:11:28,565 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:11:28,565 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:11:28,565 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:11:28,566 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:11:28,566 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:11:28,566 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:11:28,567 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:11:28,567 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:11:28,567 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:11:28,567 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:11:28,567 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:11:28,568 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:11:28,568 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:11:28,568 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:11:28,568 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:11:28,568 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:11:28,569 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:11:28,569 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:11:28,569 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:11:28,569 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:11:28,569 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:11:28,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:11:28,570 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:11:28,570 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:11:28,570 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:11:28,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:11:28,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:11:28,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:11:28,658 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:11:28,659 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:11:28,660 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-11-07 15:11:28,736 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818e61eda/40363966f2ab4e2098317d61c2f2f5f9/FLAGb7eeb11c3 [2018-11-07 15:11:29,404 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:11:29,405 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-11-07 15:11:29,432 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818e61eda/40363966f2ab4e2098317d61c2f2f5f9/FLAGb7eeb11c3 [2018-11-07 15:11:29,452 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818e61eda/40363966f2ab4e2098317d61c2f2f5f9 [2018-11-07 15:11:29,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:11:29,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:11:29,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:11:29,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:11:29,479 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:11:29,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:29" (1/1) ... [2018-11-07 15:11:29,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:29, skipping insertion in model container [2018-11-07 15:11:29,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:29" (1/1) ... [2018-11-07 15:11:29,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:11:29,607 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:11:30,500 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:11:30,505 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:11:30,796 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:11:30,820 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:11:30,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30 WrapperNode [2018-11-07 15:11:30,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:11:30,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:11:30,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:11:30,823 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:11:30,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:11:31,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:11:31,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:11:31,059 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:11:31,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... [2018-11-07 15:11:31,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:11:31,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:11:31,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:11:31,234 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:11:31,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 15:11:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:11:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:11:31,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:11:31,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:11:31,292 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:11:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:11:31,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:11:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:11:31,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:11:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:11:31,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:11:38,282 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:11:38,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:38 BoogieIcfgContainer [2018-11-07 15:11:38,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:11:38,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:11:38,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:11:38,289 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:11:38,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:11:29" (1/3) ... [2018-11-07 15:11:38,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6225ead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:38, skipping insertion in model container [2018-11-07 15:11:38,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:30" (2/3) ... [2018-11-07 15:11:38,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6225ead2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:38, skipping insertion in model container [2018-11-07 15:11:38,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:38" (3/3) ... [2018-11-07 15:11:38,294 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label36_true-unreach-call.c [2018-11-07 15:11:38,306 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:11:38,318 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:11:38,337 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:11:38,394 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:11:38,395 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:11:38,395 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:11:38,395 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:11:38,395 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:11:38,395 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:11:38,395 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:11:38,396 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:11:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 15:11:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 15:11:38,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:38,449 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:11:38,451 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:38,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:38,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1645176452, now seen corresponding path program 1 times [2018-11-07 15:11:38,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:38,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:38,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:38,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:38,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:39,139 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 15:11:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:11:39,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:39,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:11:39,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:39,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:11:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:11:39,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:39,203 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 15:11:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:45,747 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-11-07 15:11:45,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:11:45,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-11-07 15:11:45,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:45,775 INFO L225 Difference]: With dead ends: 1510 [2018-11-07 15:11:45,775 INFO L226 Difference]: Without dead ends: 1066 [2018-11-07 15:11:45,789 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-11-07 15:11:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-11-07 15:11:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-11-07 15:11:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-11-07 15:11:45,923 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 68 [2018-11-07 15:11:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:45,924 INFO L480 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-11-07 15:11:45,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:11:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-11-07 15:11:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 15:11:45,932 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:45,933 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:11:45,933 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:45,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:45,933 INFO L82 PathProgramCache]: Analyzing trace with hash 880545895, now seen corresponding path program 1 times [2018-11-07 15:11:45,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:45,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:45,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:45,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:45,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:11:46,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:46,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:11:46,251 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:46,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:11:46,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:11:46,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:46,256 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-11-07 15:11:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:51,823 INFO L93 Difference]: Finished difference Result 3981 states and 6113 transitions. [2018-11-07 15:11:51,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:11:51,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-11-07 15:11:51,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:51,848 INFO L225 Difference]: With dead ends: 3981 [2018-11-07 15:11:51,848 INFO L226 Difference]: Without dead ends: 2923 [2018-11-07 15:11:51,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:51,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-11-07 15:11:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2018-11-07 15:11:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-11-07 15:11:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4008 transitions. [2018-11-07 15:11:51,979 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4008 transitions. Word has length 138 [2018-11-07 15:11:51,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:51,980 INFO L480 AbstractCegarLoop]: Abstraction has 2921 states and 4008 transitions. [2018-11-07 15:11:51,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:11:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4008 transitions. [2018-11-07 15:11:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-07 15:11:51,990 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:51,991 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:11:51,991 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:51,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:51,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1873397843, now seen corresponding path program 1 times [2018-11-07 15:11:51,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:51,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:51,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:51,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:51,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 15:11:52,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:11:52,570 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:11:52,571 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-11-07 15:11:52,573 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 15:11:52,635 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:11:52,635 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:11:53,177 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:11:57,244 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:11:57,246 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 15:11:57,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:57,294 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:11:58,376 INFO L227 lantSequenceWeakener]: Weakened 34 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-07 15:11:58,376 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:12:01,144 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-11-07 15:12:01,145 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:12:01,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:12:01,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 15:12:01,146 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:12:01,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 15:12:01,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 15:12:01,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2018-11-07 15:12:01,149 INFO L87 Difference]: Start difference. First operand 2921 states and 4008 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 15:15:45,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 15:15:45,126 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 15:15:45,131 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 15:15:45,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:15:45 BoogieIcfgContainer [2018-11-07 15:15:45,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 15:15:45,133 INFO L168 Benchmark]: Toolchain (without parser) took 255665.97 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 663.2 MB. Max. memory is 7.1 GB. [2018-11-07 15:15:45,134 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-07 15:15:45,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1351.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 15:15:45,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 236.38 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 15:15:45,136 INFO L168 Benchmark]: Boogie Preprocessor took 174.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-11-07 15:15:45,137 INFO L168 Benchmark]: RCFGBuilder took 7049.60 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.6 MB). Peak memory consumption was 292.6 MB. Max. memory is 7.1 GB. [2018-11-07 15:15:45,138 INFO L168 Benchmark]: TraceAbstraction took 246847.76 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 2.9 GB in the end (delta: -1.1 GB). Peak memory consumption was 398.2 MB. Max. memory is 7.1 GB. [2018-11-07 15:15:45,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1351.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 236.38 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 174.27 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7049.60 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.6 MB). Peak memory consumption was 292.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246847.76 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 2.9 GB in the end (delta: -1.1 GB). Peak memory consumption was 398.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was constructing difference of abstraction (2921states) and FLOYD_HOARE automaton (currently 23 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2669 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 246.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 236.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 817 SDtfs, 7266 SDslu, 413 SDs, 0 SdLazy, 5582 SolverSat, 1313 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 221.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 269 GetRequests, 184 SyntacticMatches, 54 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2921occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9970165989616794 AbsIntWeakeningRatio, 0.10526315789473684 AbsIntAvgWeakeningVarsNumRemoved, 10.983805668016194 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 454 NumberOfCodeBlocks, 454 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 335446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 190/267 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown