./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 20:04:27,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 20:04:27,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 20:04:27,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 20:04:27,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 20:04:27,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 20:04:27,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 20:04:27,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 20:04:27,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 20:04:27,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 20:04:27,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 20:04:27,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 20:04:27,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 20:04:27,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 20:04:27,597 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 20:04:27,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 20:04:27,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 20:04:27,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 20:04:27,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 20:04:27,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 20:04:27,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 20:04:27,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 20:04:27,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 20:04:27,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 20:04:27,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 20:04:27,602 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 20:04:27,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 20:04:27,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 20:04:27,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 20:04:27,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 20:04:27,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 20:04:27,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 20:04:27,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 20:04:27,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 20:04:27,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 20:04:27,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 20:04:27,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 20:04:27,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 20:04:27,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 20:04:27,606 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d [2024-11-16 20:04:27,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 20:04:27,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 20:04:27,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 20:04:27,889 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 20:04:27,889 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 20:04:27,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2024-11-16 20:04:29,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 20:04:29,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 20:04:29,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2024-11-16 20:04:29,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d21b89c/117887ba3c5f4a46b0073fd106db74aa/FLAG4adfcfe21 [2024-11-16 20:04:29,925 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d21b89c/117887ba3c5f4a46b0073fd106db74aa [2024-11-16 20:04:29,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 20:04:29,929 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 20:04:29,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 20:04:29,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 20:04:29,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 20:04:29,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:04:29" (1/1) ... [2024-11-16 20:04:29,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299d925c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:29, skipping insertion in model container [2024-11-16 20:04:29,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:04:29" (1/1) ... [2024-11-16 20:04:30,084 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 20:04:30,387 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2024-11-16 20:04:30,396 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2024-11-16 20:04:30,945 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:30,946 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:30,946 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:30,947 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:30,948 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:30,964 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:30,965 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:30,967 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:30,967 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,479 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,482 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 20:04:31,664 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 20:04:31,683 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2024-11-16 20:04:31,684 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2024-11-16 20:04:31,726 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,727 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,727 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,727 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,728 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,732 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,733 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,733 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,735 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,843 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-11-16 20:04:31,845 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,845 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-16 20:04:31,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-11-16 20:04:31,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 20:04:32,122 INFO L204 MainTranslator]: Completed translation [2024-11-16 20:04:32,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32 WrapperNode [2024-11-16 20:04:32,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 20:04:32,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 20:04:32,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 20:04:32,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 20:04:32,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,358 INFO L138 Inliner]: procedures = 682, calls = 2786, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 823 [2024-11-16 20:04:32,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 20:04:32,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 20:04:32,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 20:04:32,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 20:04:32,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,466 INFO L175 MemorySlicer]: Split 529 memory accesses to 6 slices as follows [2, 257, 238, 16, 5, 11]. 49 percent of accesses are in the largest equivalence class. The 29 initializations are split as follows [2, 0, 6, 16, 5, 0]. The 492 writes are split as follows [0, 257, 232, 0, 0, 3]. [2024-11-16 20:04:32,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,498 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 20:04:32,524 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 20:04:32,524 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 20:04:32,524 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 20:04:32,525 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (1/1) ... [2024-11-16 20:04:32,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 20:04:32,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 20:04:32,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 20:04:32,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 20:04:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-16 20:04:32,606 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-16 20:04:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_compare [2024-11-16 20:04:32,607 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_compare [2024-11-16 20:04:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-16 20:04:32,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-16 20:04:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-16 20:04:32,608 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-16 20:04:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-16 20:04:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-16 20:04:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-16 20:04:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-16 20:04:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-16 20:04:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-16 20:04:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 20:04:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 20:04:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 20:04:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 20:04:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-16 20:04:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-16 20:04:32,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 20:04:32,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 20:04:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 20:04:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 20:04:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 20:04:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 20:04:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 20:04:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-16 20:04:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-16 20:04:32,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-16 20:04:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 20:04:32,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 20:04:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-16 20:04:32,611 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-16 20:04:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-16 20:04:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-16 20:04:32,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-16 20:04:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-16 20:04:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-16 20:04:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-16 20:04:32,612 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2024-11-16 20:04:32,612 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2024-11-16 20:04:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 20:04:32,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 20:04:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-16 20:04:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-16 20:04:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-16 20:04:32,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-16 20:04:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-16 20:04:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-16 20:04:32,614 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-16 20:04:32,614 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-16 20:04:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-16 20:04:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-16 20:04:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 20:04:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 20:04:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 20:04:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 20:04:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-16 20:04:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-16 20:04:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 20:04:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 20:04:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 20:04:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 20:04:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-16 20:04:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-16 20:04:32,930 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 20:04:32,932 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 20:04:32,973 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6886: havoc #t~malloc557.base, #t~malloc557.offset; [2024-11-16 20:04:33,001 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6256: havoc #t~mem472;havoc #t~short473;havoc #t~mem474;havoc #t~mem475;havoc #t~short476; [2024-11-16 20:04:33,004 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2024-11-16 20:04:33,023 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2024-11-16 20:04:33,109 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6803: havoc #t~ret543#1.base, #t~ret543#1.offset; [2024-11-16 20:04:41,158 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-11-16 20:04:41,158 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 20:04:41,176 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 20:04:41,176 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 20:04:41,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:04:41 BoogieIcfgContainer [2024-11-16 20:04:41,177 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 20:04:41,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 20:04:41,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 20:04:41,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 20:04:41,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:04:29" (1/3) ... [2024-11-16 20:04:41,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5931373e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:04:41, skipping insertion in model container [2024-11-16 20:04:41,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:04:32" (2/3) ... [2024-11-16 20:04:41,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5931373e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:04:41, skipping insertion in model container [2024-11-16 20:04:41,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:04:41" (3/3) ... [2024-11-16 20:04:41,188 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_compare_harness.i [2024-11-16 20:04:41,205 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 20:04:41,205 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 20:04:41,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 20:04:41,284 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2938f7f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 20:04:41,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 20:04:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 78 states have internal predecessors, (98), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-16 20:04:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 20:04:41,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:04:41,303 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-16 20:04:41,303 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:04:41,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:04:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash 255078889, now seen corresponding path program 1 times [2024-11-16 20:04:41,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:04:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083590298] [2024-11-16 20:04:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:04:41,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:05:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:05:59,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 20:05:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:05:59,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-16 20:05:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:05:59,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 20:05:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:05:59,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 20:05:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:05:59,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 20:05:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:05:59,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 20:05:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:05:59,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-16 20:05:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:05:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 20:05:59,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:05:59,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083590298] [2024-11-16 20:05:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083590298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:05:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:05:59,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 20:05:59,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772368793] [2024-11-16 20:05:59,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:05:59,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 20:05:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:05:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 20:05:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 20:05:59,394 INFO L87 Difference]: Start difference. First operand has 122 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 78 states have internal predecessors, (98), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 20:05:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:05:59,442 INFO L93 Difference]: Finished difference Result 238 states and 337 transitions. [2024-11-16 20:05:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 20:05:59,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2024-11-16 20:05:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:05:59,455 INFO L225 Difference]: With dead ends: 238 [2024-11-16 20:05:59,457 INFO L226 Difference]: Without dead ends: 116 [2024-11-16 20:05:59,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 20:05:59,466 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 20:05:59,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 20:05:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-16 20:05:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-16 20:05:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.25) internal successors, (90), 73 states have internal predecessors, (90), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-16 20:05:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2024-11-16 20:05:59,520 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 50 [2024-11-16 20:05:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:05:59,521 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2024-11-16 20:05:59,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 20:05:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2024-11-16 20:05:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 20:05:59,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:05:59,524 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-16 20:05:59,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 20:05:59,524 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:05:59,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:05:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash -39128823, now seen corresponding path program 1 times [2024-11-16 20:05:59,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:05:59,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112690215] [2024-11-16 20:05:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:05:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms