./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/uthash-2.0.2/uthash_OAT_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 13:57:59,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 13:57:59,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 13:57:59,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 13:57:59,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 13:57:59,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 13:57:59,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 13:57:59,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 13:57:59,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 13:57:59,440 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 13:57:59,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 13:57:59,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 13:57:59,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 13:57:59,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 13:57:59,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 13:57:59,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 13:57:59,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 13:57:59,444 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 13:57:59,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 13:57:59,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 13:57:59,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 13:57:59,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 13:57:59,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 13:57:59,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 13:57:59,446 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 13:57:59,446 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 13:57:59,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 13:57:59,447 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 13:57:59,447 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 13:57:59,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 13:57:59,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 13:57:59,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 13:57:59,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 13:57:59,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 13:57:59,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 13:57:59,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 13:57:59,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 13:57:59,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 13:57:59,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 13:57:59,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 13:57:59,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 13:57:59,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 13:57:59,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2024-11-10 13:57:59,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 13:57:59,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 13:57:59,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 13:57:59,691 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 13:57:59,692 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 13:57:59,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2024-11-10 13:58:01,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 13:58:01,317 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 13:58:01,321 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2024-11-10 13:58:01,344 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097cdf40a/b536b895ca764b19949340375c9f3c9b/FLAGbf38c8e90 [2024-11-10 13:58:01,658 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097cdf40a/b536b895ca764b19949340375c9f3c9b [2024-11-10 13:58:01,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 13:58:01,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 13:58:01,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 13:58:01,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 13:58:01,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 13:58:01,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:58:01" (1/1) ... [2024-11-10 13:58:01,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5362df9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:01, skipping insertion in model container [2024-11-10 13:58:01,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:58:01" (1/1) ... [2024-11-10 13:58:01,706 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 13:58:02,051 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/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2024-11-10 13:58:02,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 13:58:02,165 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 13:58:02,197 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/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2024-11-10 13:58:02,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 13:58:02,298 INFO L204 MainTranslator]: Completed translation [2024-11-10 13:58:02,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02 WrapperNode [2024-11-10 13:58:02,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 13:58:02,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 13:58:02,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 13:58:02,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 13:58:02,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,379 INFO L138 Inliner]: procedures = 176, calls = 230, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 981 [2024-11-10 13:58:02,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 13:58:02,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 13:58:02,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 13:58:02,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 13:58:02,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,460 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-11-10 13:58:02,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,496 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 13:58:02,525 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 13:58:02,525 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 13:58:02,525 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 13:58:02,526 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (1/1) ... [2024-11-10 13:58:02,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 13:58:02,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:58:02,560 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) [2024-11-10 13:58:02,568 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 [2024-11-10 13:58:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 13:58:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 13:58:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-10 13:58:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-10 13:58:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 13:58:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 13:58:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-10 13:58:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-10 13:58:02,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-10 13:58:02,614 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 13:58:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 13:58:02,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 13:58:02,774 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 13:58:02,776 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 13:58:03,599 INFO L? ?]: Removed 232 outVars from TransFormulas that were not future-live. [2024-11-10 13:58:03,599 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 13:58:03,638 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 13:58:03,639 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-10 13:58:03,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:58:03 BoogieIcfgContainer [2024-11-10 13:58:03,639 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 13:58:03,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 13:58:03,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 13:58:03,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 13:58:03,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:58:01" (1/3) ... [2024-11-10 13:58:03,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766f7e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:58:03, skipping insertion in model container [2024-11-10 13:58:03,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:58:02" (2/3) ... [2024-11-10 13:58:03,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766f7e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:58:03, skipping insertion in model container [2024-11-10 13:58:03,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:58:03" (3/3) ... [2024-11-10 13:58:03,646 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-2.i [2024-11-10 13:58:03,659 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 13:58:03,660 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 13:58:03,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 13:58:03,748 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;@652be529, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 13:58:03,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 13:58:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 256 states have (on average 1.609375) internal successors, (412), 267 states have internal predecessors, (412), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 13:58:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 13:58:03,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:58:03,770 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:58:03,770 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:58:03,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:58:03,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1501301756, now seen corresponding path program 1 times [2024-11-10 13:58:03,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:58:03,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105001009] [2024-11-10 13:58:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:58:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:58:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:58:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105001009] [2024-11-10 13:58:03,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105001009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:58:03,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:58:03,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 13:58:03,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863102167] [2024-11-10 13:58:03,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:58:03,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 13:58:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:58:03,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 13:58:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 13:58:03,903 INFO L87 Difference]: Start difference. First operand has 273 states, 256 states have (on average 1.609375) internal successors, (412), 267 states have internal predecessors, (412), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:58:03,987 INFO L93 Difference]: Finished difference Result 544 states and 884 transitions. [2024-11-10 13:58:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 13:58:03,989 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-10 13:58:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:58:03,998 INFO L225 Difference]: With dead ends: 544 [2024-11-10 13:58:03,998 INFO L226 Difference]: Without dead ends: 234 [2024-11-10 13:58:04,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 13:58:04,006 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 13:58:04,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 370 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 13:58:04,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-10 13:58:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2024-11-10 13:58:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 218 states have (on average 1.444954128440367) internal successors, (315), 228 states have internal predecessors, (315), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 13:58:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 341 transitions. [2024-11-10 13:58:04,060 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 341 transitions. Word has length 11 [2024-11-10 13:58:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:58:04,060 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 341 transitions. [2024-11-10 13:58:04,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 341 transitions. [2024-11-10 13:58:04,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 13:58:04,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:58:04,061 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:58:04,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 13:58:04,061 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:58:04,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:58:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1123485280, now seen corresponding path program 1 times [2024-11-10 13:58:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:58:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928813550] [2024-11-10 13:58:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:58:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:58:04,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:58:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928813550] [2024-11-10 13:58:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928813550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:58:04,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:58:04,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 13:58:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086693659] [2024-11-10 13:58:04,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:58:04,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 13:58:04,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:58:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 13:58:04,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 13:58:04,124 INFO L87 Difference]: Start difference. First operand 234 states and 341 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:58:04,195 INFO L93 Difference]: Finished difference Result 462 states and 676 transitions. [2024-11-10 13:58:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 13:58:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-10 13:58:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:58:04,198 INFO L225 Difference]: With dead ends: 462 [2024-11-10 13:58:04,198 INFO L226 Difference]: Without dead ends: 431 [2024-11-10 13:58:04,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 13:58:04,200 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 276 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:58:04,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 671 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:58:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-10 13:58:04,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 236. [2024-11-10 13:58:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 220 states have (on average 1.440909090909091) internal successors, (317), 230 states have internal predecessors, (317), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 13:58:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 343 transitions. [2024-11-10 13:58:04,213 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 343 transitions. Word has length 12 [2024-11-10 13:58:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:58:04,213 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 343 transitions. [2024-11-10 13:58:04,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 343 transitions. [2024-11-10 13:58:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 13:58:04,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:58:04,216 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:58:04,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 13:58:04,216 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:58:04,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:58:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash 900133282, now seen corresponding path program 1 times [2024-11-10 13:58:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:58:04,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956322810] [2024-11-10 13:58:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:58:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:58:04,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:58:04,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956322810] [2024-11-10 13:58:04,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956322810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:58:04,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:58:04,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:58:04,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92185344] [2024-11-10 13:58:04,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:58:04,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:58:04,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:58:04,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:58:04,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:58:04,535 INFO L87 Difference]: Start difference. First operand 236 states and 343 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:58:04,645 INFO L93 Difference]: Finished difference Result 471 states and 685 transitions. [2024-11-10 13:58:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 13:58:04,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-10 13:58:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:58:04,647 INFO L225 Difference]: With dead ends: 471 [2024-11-10 13:58:04,647 INFO L226 Difference]: Without dead ends: 239 [2024-11-10 13:58:04,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:58:04,648 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 106 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:58:04,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 788 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:58:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-10 13:58:04,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2024-11-10 13:58:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 220 states have (on average 1.4090909090909092) internal successors, (310), 230 states have internal predecessors, (310), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 13:58:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 336 transitions. [2024-11-10 13:58:04,657 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 336 transitions. Word has length 89 [2024-11-10 13:58:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:58:04,657 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 336 transitions. [2024-11-10 13:58:04,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:04,657 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 336 transitions. [2024-11-10 13:58:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 13:58:04,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:58:04,660 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:58:04,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 13:58:04,660 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:58:04,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:58:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash 791525481, now seen corresponding path program 1 times [2024-11-10 13:58:04,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:58:04,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494517243] [2024-11-10 13:58:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:58:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:58:04,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:58:04,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494517243] [2024-11-10 13:58:04,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494517243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:58:04,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:58:04,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:58:04,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369436042] [2024-11-10 13:58:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:58:04,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:58:04,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:58:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:58:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:58:04,793 INFO L87 Difference]: Start difference. First operand 236 states and 336 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:58:04,860 INFO L93 Difference]: Finished difference Result 420 states and 593 transitions. [2024-11-10 13:58:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 13:58:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-10 13:58:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:58:04,862 INFO L225 Difference]: With dead ends: 420 [2024-11-10 13:58:04,862 INFO L226 Difference]: Without dead ends: 188 [2024-11-10 13:58:04,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 13:58:04,863 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 9 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:58:04,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 655 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:58:04,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-10 13:58:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-10 13:58:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 172 states have (on average 1.3372093023255813) internal successors, (230), 182 states have internal predecessors, (230), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 13:58:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 256 transitions. [2024-11-10 13:58:04,872 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 256 transitions. Word has length 89 [2024-11-10 13:58:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:58:04,872 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 256 transitions. [2024-11-10 13:58:04,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 256 transitions. [2024-11-10 13:58:04,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 13:58:04,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:58:04,875 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:58:04,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 13:58:04,876 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:58:04,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:58:04,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1000223784, now seen corresponding path program 1 times [2024-11-10 13:58:04,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:58:04,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949897165] [2024-11-10 13:58:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:04,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:58:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:58:04,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:58:04,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949897165] [2024-11-10 13:58:04,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949897165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:58:04,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:58:04,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 13:58:04,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122712948] [2024-11-10 13:58:04,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:58:04,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 13:58:04,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:58:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 13:58:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 13:58:04,999 INFO L87 Difference]: Start difference. First operand 188 states and 256 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:58:05,050 INFO L93 Difference]: Finished difference Result 454 states and 618 transitions. [2024-11-10 13:58:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 13:58:05,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-10 13:58:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:58:05,052 INFO L225 Difference]: With dead ends: 454 [2024-11-10 13:58:05,052 INFO L226 Difference]: Without dead ends: 270 [2024-11-10 13:58:05,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 13:58:05,053 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 54 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 13:58:05,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 472 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 13:58:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-10 13:58:05,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2024-11-10 13:58:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 254 states have (on average 1.3346456692913387) internal successors, (339), 264 states have internal predecessors, (339), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 13:58:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 365 transitions. [2024-11-10 13:58:05,060 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 365 transitions. Word has length 89 [2024-11-10 13:58:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:58:05,060 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 365 transitions. [2024-11-10 13:58:05,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 13:58:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 365 transitions. [2024-11-10 13:58:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-10 13:58:05,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:58:05,063 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:58:05,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 13:58:05,063 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:58:05,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:58:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1328155311, now seen corresponding path program 1 times [2024-11-10 13:58:05,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:58:05,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016579021] [2024-11-10 13:58:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:58:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:05,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:58:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:05,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:58:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:58:05,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:58:05,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016579021] [2024-11-10 13:58:05,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016579021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:58:05,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605806501] [2024-11-10 13:58:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:05,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:58:05,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:58:05,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 13:58:05,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 13:58:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:05,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 13:58:05,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:58:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:58:05,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:58:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:58:05,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605806501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:58:05,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:58:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-10 13:58:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685729739] [2024-11-10 13:58:05,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:58:05,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 13:58:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:58:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 13:58:05,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:58:05,698 INFO L87 Difference]: Start difference. First operand 270 states and 365 transitions. Second operand has 8 states, 8 states have (on average 33.125) internal successors, (265), 7 states have internal predecessors, (265), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-10 13:58:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:58:06,035 INFO L93 Difference]: Finished difference Result 667 states and 912 transitions. [2024-11-10 13:58:06,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 13:58:06,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 33.125) internal successors, (265), 7 states have internal predecessors, (265), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 104 [2024-11-10 13:58:06,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:58:06,038 INFO L225 Difference]: With dead ends: 667 [2024-11-10 13:58:06,038 INFO L226 Difference]: Without dead ends: 636 [2024-11-10 13:58:06,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:58:06,039 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 813 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 13:58:06,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1093 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 13:58:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-11-10 13:58:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 633. [2024-11-10 13:58:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 608 states have (on average 1.3157894736842106) internal successors, (800), 618 states have internal predecessors, (800), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-10 13:58:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 844 transitions. [2024-11-10 13:58:06,052 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 844 transitions. Word has length 104 [2024-11-10 13:58:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:58:06,053 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 844 transitions. [2024-11-10 13:58:06,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.125) internal successors, (265), 7 states have internal predecessors, (265), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-10 13:58:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 844 transitions. [2024-11-10 13:58:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-10 13:58:06,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:58:06,062 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-10 13:58:06,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 13:58:06,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 13:58:06,267 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:58:06,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:58:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1518196743, now seen corresponding path program 1 times [2024-11-10 13:58:06,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:58:06,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572137980] [2024-11-10 13:58:06,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:06,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:58:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:06,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:58:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:06,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:58:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:58:06,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:58:06,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572137980] [2024-11-10 13:58:06,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572137980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:58:06,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256668468] [2024-11-10 13:58:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:06,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:58:06,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:58:06,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 13:58:06,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 13:58:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:58:07,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 13:58:07,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:58:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:58:07,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:58:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:58:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256668468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:58:08,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:58:08,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-10 13:58:08,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607932679] [2024-11-10 13:58:08,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:58:08,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 13:58:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:58:08,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 13:58:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-10 13:58:08,172 INFO L87 Difference]: Start difference. First operand 633 states and 844 transitions. Second operand has 14 states, 14 states have (on average 51.92857142857143) internal successors, (727), 13 states have internal predecessors, (727), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-10 13:58:08,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:58:08,762 INFO L93 Difference]: Finished difference Result 1561 states and 2115 transitions. [2024-11-10 13:58:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 13:58:08,763 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 51.92857142857143) internal successors, (727), 13 states have internal predecessors, (727), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 335 [2024-11-10 13:58:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:58:08,768 INFO L225 Difference]: With dead ends: 1561 [2024-11-10 13:58:08,768 INFO L226 Difference]: Without dead ends: 1530 [2024-11-10 13:58:08,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-10 13:58:08,770 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 1861 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 13:58:08,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 2797 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 13:58:08,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2024-11-10 13:58:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1527. [2024-11-10 13:58:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1484 states have (on average 1.3113207547169812) internal successors, (1946), 1494 states have internal predecessors, (1946), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-10 13:58:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2026 transitions. [2024-11-10 13:58:08,802 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2026 transitions. Word has length 335 [2024-11-10 13:58:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:58:08,803 INFO L471 AbstractCegarLoop]: Abstraction has 1527 states and 2026 transitions. [2024-11-10 13:58:08,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 51.92857142857143) internal successors, (727), 13 states have internal predecessors, (727), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-10 13:58:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2026 transitions. [2024-11-10 13:58:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2024-11-10 13:58:08,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:58:08,814 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2024-11-10 13:58:08,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 13:58:09,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-10 13:58:09,014 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:58:09,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:58:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1362239687, now seen corresponding path program 2 times [2024-11-10 13:58:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:58:09,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628736914] [2024-11-10 13:58:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:58:09,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms