./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac73863cbc4eabbf60736c571391cc7f1632dc23449d0ac7ceed7d831b575705 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:42:11,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:42:11,367 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-64bit-Kojak_Default.epf [2024-11-08 19:42:11,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:42:11,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 19:42:11,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:42:11,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:42:11,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 19:42:11,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:42:11,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:42:11,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:42:11,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:42:11,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:42:11,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:42:11,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:42:11,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:42:11,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:42:11,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:42:11,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:42:11,439 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:42:11,439 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 19:42:11,440 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 19:42:11,441 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 19:42:11,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:42:11,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 19:42:11,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:42:11,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:42:11,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:42:11,444 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 19:42:11,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:42:11,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac73863cbc4eabbf60736c571391cc7f1632dc23449d0ac7ceed7d831b575705 [2024-11-08 19:42:11,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:42:11,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:42:11,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:42:11,797 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:42:11,798 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:42:11,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.2.prop1-func-interl.c Unable to find full path for "g++" [2024-11-08 19:42:13,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:42:14,264 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:42:14,264 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.2.prop1-func-interl.c [2024-11-08 19:42:14,285 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/data/e8fff1fba/f51ae7fc9f774a1189cc8fc00017774f/FLAG79b200fb3 [2024-11-08 19:42:14,301 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/data/e8fff1fba/f51ae7fc9f774a1189cc8fc00017774f [2024-11-08 19:42:14,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:42:14,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:42:14,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:42:14,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:42:14,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:42:14,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:42:14" (1/1) ... [2024-11-08 19:42:14,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294e47ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:14, skipping insertion in model container [2024-11-08 19:42:14,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:42:14" (1/1) ... [2024-11-08 19:42:14,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:42:14,666 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.2.prop1-func-interl.c[1177,1190] [2024-11-08 19:42:15,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:42:15,247 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:42:15,257 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.train-gate.2.prop1-func-interl.c[1177,1190] [2024-11-08 19:42:15,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:42:15,627 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:42:15,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15 WrapperNode [2024-11-08 19:42:15,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:42:15,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:42:15,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:42:15,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:42:15,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:15,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:17,534 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 9507 [2024-11-08 19:42:17,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:42:17,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:42:17,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:42:17,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:42:17,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:17,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:17,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:17,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:18,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:18,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:18,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:18,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:19,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:42:19,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:42:19,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:42:19,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:42:19,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:42:15" (1/1) ... [2024-11-08 19:42:19,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 19:42:19,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 19:42:19,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 19:42:19,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_512c30b3-62ef-49dc-bd67-7bd8c7ec5f1a/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 19:42:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:42:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 19:42:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:42:19,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:42:20,413 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:42:20,416 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:42:36,489 INFO L? ?]: Removed 5369 outVars from TransFormulas that were not future-live. [2024-11-08 19:42:36,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:42:59,272 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:42:59,272 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 19:42:59,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:42:59 BoogieIcfgContainer [2024-11-08 19:42:59,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:42:59,274 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 19:42:59,274 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 19:42:59,285 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 19:42:59,285 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:42:59" (1/1) ... [2024-11-08 19:42:59,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:42:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 19:42:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2024-11-08 19:42:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2024-11-08 19:42:59,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 19:42:59,356 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 19:42:59,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:43:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:43:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:43:13,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 19:43:23,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 19:43:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 19:43:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2024-11-08 19:43:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2024-11-08 19:43:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 19:43:23,813 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 19:43:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms