./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:08:13,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:08:13,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:08:13,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:08:13,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:08:13,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:08:13,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:08:13,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:08:13,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:08:13,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:08:13,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:08:13,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:08:13,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:08:13,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:08:13,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:08:13,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:08:13,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:08:13,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:08:13,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:08:13,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:08:13,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:08:13,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:08:13,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:08:13,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:08:13,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:08:13,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:08:13,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:08:13,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:08:13,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:08:13,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:08:13,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:08:13,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:08:13,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:08:13,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:08:13,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:08:13,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:08:13,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:08:13,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:08:13,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:08:13,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:08:13,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:08:13,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:08:13,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:08:13,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:08:13,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:08:13,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:08:13,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:08:13,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:08:13,772 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:08:13,772 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:08:13,772 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:08:13,773 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:08:13,774 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:08:13,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:08:13,774 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:08:13,775 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:08:13,775 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:08:13,775 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:08:13,775 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:08:13,776 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:08:13,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:08:13,777 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:08:13,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:08:13,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:08:13,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:08:13,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:08:13,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:08:13,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:08:13,779 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:08:13,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:08:13,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:08:13,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:08:13,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:08:13,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:08:13,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:13,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:08:13,781 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:08:13,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:08:13,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:08:13,781 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:08:13,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:08:13,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:08:13,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:08:13,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2022-11-03 04:08:14,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:08:14,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:08:14,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:08:14,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:08:14,209 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:08:14,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-03 04:08:14,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/data/fe6aa3a37/8bf0ba985cea4d8b93a6a91db8bf9da1/FLAGeda4b7749 [2022-11-03 04:08:15,098 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:08:15,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-03 04:08:15,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/data/fe6aa3a37/8bf0ba985cea4d8b93a6a91db8bf9da1/FLAGeda4b7749 [2022-11-03 04:08:15,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/data/fe6aa3a37/8bf0ba985cea4d8b93a6a91db8bf9da1 [2022-11-03 04:08:15,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:08:15,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:08:15,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:15,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:08:15,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:08:15,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:15" (1/1) ... [2022-11-03 04:08:15,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8afd3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:15, skipping insertion in model container [2022-11-03 04:08:15,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:08:15" (1/1) ... [2022-11-03 04:08:15,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:08:15,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:08:16,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-03 04:08:16,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:16,078 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:08:16,114 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-03 04:08:16,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:08:16,191 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:08:16,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16 WrapperNode [2022-11-03 04:08:16,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:08:16,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:16,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:08:16,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:08:16,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,299 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 206 [2022-11-03 04:08:16,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:08:16,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:08:16,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:08:16,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:08:16,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,370 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:08:16,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:08:16,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:08:16,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:08:16,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (1/1) ... [2022-11-03 04:08:16,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:08:16,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:16,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:08:16,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_662ec25f-94f8-4478-9cbc-451c697cb933/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:08:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:08:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:08:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-03 04:08:16,484 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-03 04:08:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:08:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:08:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-03 04:08:16,485 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-03 04:08:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:08:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 04:08:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:08:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:08:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:08:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:08:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:08:16,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:08:16,488 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 04:08:16,789 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:08:16,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:08:17,301 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:08:17,312 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:08:17,318 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-03 04:08:17,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:17 BoogieIcfgContainer [2022-11-03 04:08:17,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:08:17,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:08:17,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:08:17,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:08:17,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:08:15" (1/3) ... [2022-11-03 04:08:17,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c04ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:08:17, skipping insertion in model container [2022-11-03 04:08:17,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:08:16" (2/3) ... [2022-11-03 04:08:17,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c04ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:08:17, skipping insertion in model container [2022-11-03 04:08:17,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:08:17" (3/3) ... [2022-11-03 04:08:17,335 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2022-11-03 04:08:17,346 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 04:08:17,361 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:08:17,361 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:08:17,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 04:08:17,551 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-03 04:08:17,624 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 04:08:17,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 221 transitions, 464 flow [2022-11-03 04:08:17,653 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 221 transitions, 464 flow [2022-11-03 04:08:17,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 221 transitions, 464 flow [2022-11-03 04:08:17,923 INFO L130 PetriNetUnfolder]: 52/418 cut-off events. [2022-11-03 04:08:17,923 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-03 04:08:17,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 418 events. 52/418 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1656 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 214. Up to 8 conditions per place. [2022-11-03 04:08:17,956 INFO L118 LiptonReduction]: Number of co-enabled transitions 15030 [2022-11-03 04:09:00,677 INFO L133 LiptonReduction]: Checked pairs total: 27381 [2022-11-03 04:09:00,678 INFO L135 LiptonReduction]: Total number of compositions: 186 [2022-11-03 04:09:00,693 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 65 transitions, 152 flow [2022-11-03 04:09:00,880 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2179 states, 2170 states have (on average 3.223041474654378) internal successors, (6994), 2178 states have internal predecessors, (6994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:09:00,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:00,918 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@73233b2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:00,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 04:09:00,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 2179 states, 2170 states have (on average 3.223041474654378) internal successors, (6994), 2178 states have internal predecessors, (6994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:09:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:09:00,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:00,939 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-03 04:09:00,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 04:09:00,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash 22236773, now seen corresponding path program 1 times [2022-11-03 04:09:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:00,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464032211] [2022-11-03 04:09:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:09:01,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:09:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:09:01,326 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:09:01,331 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:09:01,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-03 04:09:01,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-03 04:09:01,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-03 04:09:01,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-03 04:09:01,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:09:01,342 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 04:09:01,346 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 04:09:01,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 04:09:01,438 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-03 04:09:01,443 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 04:09:01,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 344 transitions, 736 flow [2022-11-03 04:09:01,444 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 344 transitions, 736 flow [2022-11-03 04:09:01,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 344 transitions, 736 flow [2022-11-03 04:09:01,852 INFO L130 PetriNetUnfolder]: 191/1235 cut-off events. [2022-11-03 04:09:01,852 INFO L131 PetriNetUnfolder]: For 72/118 co-relation queries the response was YES. [2022-11-03 04:09:01,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 1235 events. 191/1235 cut-off events. For 72/118 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 7652 event pairs, 2 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 779. Up to 32 conditions per place. [2022-11-03 04:09:01,969 INFO L118 LiptonReduction]: Number of co-enabled transitions 59652 [2022-11-03 04:10:46,875 INFO L133 LiptonReduction]: Checked pairs total: 115956 [2022-11-03 04:10:46,875 INFO L135 LiptonReduction]: Total number of compositions: 278 [2022-11-03 04:10:46,876 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 118 transitions, 284 flow [2022-11-03 04:11:10,897 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 597362 states, 597323 states have (on average 5.5881524736198) internal successors, (3337932), 597361 states have internal predecessors, (3337932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:10,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:11:10,901 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@73233b2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:11:10,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-03 04:11:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 597362 states, 597323 states have (on average 5.5881524736198) internal successors, (3337932), 597361 states have internal predecessors, (3337932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:11:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 04:11:11,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:11,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:11,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-03 04:11:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1803582853, now seen corresponding path program 1 times [2022-11-03 04:11:11,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:11,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480163337] [2022-11-03 04:11:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:11,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:12,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:12,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480163337] [2022-11-03 04:11:12,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480163337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:12,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:12,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:11:12,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157941031] [2022-11-03 04:11:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:11:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:11:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:11:15,724 INFO L87 Difference]: Start difference. First operand has 597362 states, 597323 states have (on average 5.5881524736198) internal successors, (3337932), 597361 states have internal predecessors, (3337932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)