./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_21-sound_base.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_21-sound_base.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41db91eef6d6907cd33ee0e53afae152e76d8df255e37a51bd770d30500bb6fe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:00:05,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:00:05,550 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-25 00:00:05,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:00:05,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:00:05,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:00:05,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:00:05,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:00:05,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:00:05,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:00:05,611 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:00:05,613 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:00:05,613 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:00:05,615 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:00:05,615 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:00:05,616 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:00:05,616 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:00:05,617 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:00:05,617 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:00:05,618 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:00:05,618 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:00:05,619 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:00:05,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:00:05,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:00:05,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:00:05,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:00:05,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:00:05,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:00:05,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:00:05,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:00:05,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:00:05,626 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-25 00:00:05,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:00:05,627 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:00:05,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:00:05,627 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:00:05,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:00:05,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:00:05,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:00:05,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:00:05,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:00:05,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:00:05,630 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:00:05,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:00:05,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:00:05,631 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:00:05,631 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:00:05,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:00:05,632 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41db91eef6d6907cd33ee0e53afae152e76d8df255e37a51bd770d30500bb6fe [2023-11-25 00:00:05,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:00:05,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:00:05,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:00:05,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:00:05,972 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:00:05,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/goblint-regression/04-mutex_21-sound_base.i [2023-11-25 00:00:09,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:00:09,504 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:00:09,505 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/sv-benchmarks/c/goblint-regression/04-mutex_21-sound_base.i [2023-11-25 00:00:09,526 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/data/e685bd5f3/757daff2bcd5479eb75db19aa74752a7/FLAGaf72ebee8 [2023-11-25 00:00:09,543 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/data/e685bd5f3/757daff2bcd5479eb75db19aa74752a7 [2023-11-25 00:00:09,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:00:09,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:00:09,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:00:09,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:00:09,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:00:09,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:00:09" (1/1) ... [2023-11-25 00:00:09,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2638e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:09, skipping insertion in model container [2023-11-25 00:00:09,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:00:09" (1/1) ... [2023-11-25 00:00:09,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:00:10,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:00:10,176 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:00:10,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:00:10,298 WARN L675 CHandler]: The function f is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:00:10,307 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:00:10,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10 WrapperNode [2023-11-25 00:00:10,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:00:10,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:00:10,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:00:10,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:00:10,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,364 INFO L138 Inliner]: procedures = 262, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2023-11-25 00:00:10,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:00:10,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:00:10,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:00:10,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:00:10,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,401 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:00:10,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:00:10,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:00:10,421 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:00:10,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (1/1) ... [2023-11-25 00:00:10,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:00:10,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:00:10,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:00:10,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:00:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:00:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:00:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:00:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-25 00:00:10,538 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-25 00:00:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:00:10,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:00:10,542 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-25 00:00:10,736 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:00:10,738 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:00:10,856 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:00:10,871 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:00:10,871 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:00:10,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:00:10 BoogieIcfgContainer [2023-11-25 00:00:10,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:00:10,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:00:10,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:00:10,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:00:10,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:00:09" (1/3) ... [2023-11-25 00:00:10,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4acde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:00:10, skipping insertion in model container [2023-11-25 00:00:10,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:00:10" (2/3) ... [2023-11-25 00:00:10,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4acde7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:00:10, skipping insertion in model container [2023-11-25 00:00:10,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:00:10" (3/3) ... [2023-11-25 00:00:10,888 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_21-sound_base.i [2023-11-25 00:00:10,898 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-25 00:00:10,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:00:10,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-25 00:00:10,911 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-25 00:00:10,999 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-25 00:00:11,044 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 56 transitions, 116 flow [2023-11-25 00:00:11,120 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 435 states, 424 states have (on average 1.9481132075471699) internal successors, (826), 434 states have internal predecessors, (826), 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) [2023-11-25 00:00:11,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:00:11,152 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=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;@4a310890, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:00:11,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-25 00:00:11,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 435 states, 424 states have (on average 1.9481132075471699) internal successors, (826), 434 states have internal predecessors, (826), 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) [2023-11-25 00:00:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-25 00:00:11,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:11,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:11,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-25 00:00:11,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -173670012, now seen corresponding path program 1 times [2023-11-25 00:00:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:11,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344591410] [2023-11-25 00:00:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:11,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:11,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344591410] [2023-11-25 00:00:11,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344591410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:11,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:11,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:00:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886920324] [2023-11-25 00:00:11,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:11,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:00:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:11,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:00:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:11,517 INFO L87 Difference]: Start difference. First operand has 435 states, 424 states have (on average 1.9481132075471699) internal successors, (826), 434 states have internal predecessors, (826), 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, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-25 00:00:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:11,595 INFO L93 Difference]: Finished difference Result 682 states and 1290 transitions. [2023-11-25 00:00:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:00:11,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2023-11-25 00:00:11,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:11,618 INFO L225 Difference]: With dead ends: 682 [2023-11-25 00:00:11,618 INFO L226 Difference]: Without dead ends: 682 [2023-11-25 00:00:11,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:11,624 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 40 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:11,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 117 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:00:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-25 00:00:11,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 444. [2023-11-25 00:00:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 433 states have (on average 1.9468822170900693) internal successors, (843), 443 states have internal predecessors, (843), 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) [2023-11-25 00:00:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 843 transitions. [2023-11-25 00:00:11,724 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 843 transitions. Word has length 14 [2023-11-25 00:00:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:11,725 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 843 transitions. [2023-11-25 00:00:11,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-25 00:00:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 843 transitions. [2023-11-25 00:00:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-25 00:00:11,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:11,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:00:11,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-25 00:00:11,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 938635951, now seen corresponding path program 1 times [2023-11-25 00:00:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:11,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115848720] [2023-11-25 00:00:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:11,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115848720] [2023-11-25 00:00:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115848720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:11,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:11,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:00:11,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860803556] [2023-11-25 00:00:11,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:11,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:00:11,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:00:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:11,827 INFO L87 Difference]: Start difference. First operand 444 states and 843 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-25 00:00:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:11,876 INFO L93 Difference]: Finished difference Result 485 states and 925 transitions. [2023-11-25 00:00:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:00:11,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) Word has length 17 [2023-11-25 00:00:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:11,883 INFO L225 Difference]: With dead ends: 485 [2023-11-25 00:00:11,884 INFO L226 Difference]: Without dead ends: 485 [2023-11-25 00:00:11,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:11,887 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:11,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 120 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:00:11,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-11-25 00:00:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 462. [2023-11-25 00:00:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 452 states have (on average 1.9446902654867257) internal successors, (879), 461 states have internal predecessors, (879), 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) [2023-11-25 00:00:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 879 transitions. [2023-11-25 00:00:11,942 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 879 transitions. Word has length 17 [2023-11-25 00:00:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:11,943 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 879 transitions. [2023-11-25 00:00:11,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-25 00:00:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 879 transitions. [2023-11-25 00:00:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-25 00:00:11,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:11,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:11,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:00:11,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-25 00:00:11,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:11,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1088863130, now seen corresponding path program 1 times [2023-11-25 00:00:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:11,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442272906] [2023-11-25 00:00:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:12,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:12,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442272906] [2023-11-25 00:00:12,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442272906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:12,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:12,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:00:12,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742441208] [2023-11-25 00:00:12,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:12,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:00:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:12,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:00:12,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:12,065 INFO L87 Difference]: Start difference. First operand 462 states and 879 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-25 00:00:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:12,101 INFO L93 Difference]: Finished difference Result 448 states and 834 transitions. [2023-11-25 00:00:12,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:00:12,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) Word has length 19 [2023-11-25 00:00:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:12,104 INFO L225 Difference]: With dead ends: 448 [2023-11-25 00:00:12,105 INFO L226 Difference]: Without dead ends: 348 [2023-11-25 00:00:12,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:12,106 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 39 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:12,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 121 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:00:12,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-25 00:00:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 334. [2023-11-25 00:00:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 328 states have (on average 1.8445121951219512) internal successors, (605), 333 states have internal predecessors, (605), 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) [2023-11-25 00:00:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 605 transitions. [2023-11-25 00:00:12,171 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 605 transitions. Word has length 19 [2023-11-25 00:00:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:12,172 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 605 transitions. [2023-11-25 00:00:12,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-25 00:00:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 605 transitions. [2023-11-25 00:00:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-25 00:00:12,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:12,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:12,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:00:12,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-25 00:00:12,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash 306362330, now seen corresponding path program 1 times [2023-11-25 00:00:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:12,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107135601] [2023-11-25 00:00:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:12,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:00:12,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:00:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:00:12,300 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:00:12,301 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:00:12,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 9 remaining) [2023-11-25 00:00:12,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-25 00:00:12,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-25 00:00:12,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2023-11-25 00:00:12,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-25 00:00:12,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-25 00:00:12,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-25 00:00:12,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-25 00:00:12,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-25 00:00:12,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:00:12,314 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-25 00:00:12,320 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-25 00:00:12,321 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:00:12,350 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre33 could not be translated [2023-11-25 00:00:12,351 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet35 could not be translated [2023-11-25 00:00:12,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:00:12 BasicIcfg [2023-11-25 00:00:12,366 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:00:12,367 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:00:12,367 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:00:12,367 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:00:12,368 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:00:10" (3/4) ... [2023-11-25 00:00:12,372 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:00:12,374 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:00:12,374 INFO L158 Benchmark]: Toolchain (without parser) took 2827.06ms. Allocated memory was 142.6MB in the beginning and 178.3MB in the end (delta: 35.7MB). Free memory was 95.1MB in the beginning and 133.6MB in the end (delta: -38.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:00:12,375 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:00:12,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 759.46ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 67.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-25 00:00:12,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.99ms. Allocated memory is still 142.6MB. Free memory was 67.5MB in the beginning and 65.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:00:12,379 INFO L158 Benchmark]: Boogie Preprocessor took 54.70ms. Allocated memory is still 142.6MB. Free memory was 65.4MB in the beginning and 64.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:00:12,379 INFO L158 Benchmark]: RCFGBuilder took 453.89ms. Allocated memory was 142.6MB in the beginning and 178.3MB in the end (delta: 35.7MB). Free memory was 64.1MB in the beginning and 140.0MB in the end (delta: -75.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-11-25 00:00:12,379 INFO L158 Benchmark]: TraceAbstraction took 1488.61ms. Allocated memory is still 178.3MB. Free memory was 140.0MB in the beginning and 134.6MB in the end (delta: 5.4MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2023-11-25 00:00:12,380 INFO L158 Benchmark]: Witness Printer took 7.12ms. Allocated memory is still 178.3MB. Free memory was 134.6MB in the beginning and 133.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:00:12,383 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 759.46ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 67.5MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.99ms. Allocated memory is still 142.6MB. Free memory was 67.5MB in the beginning and 65.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.70ms. Allocated memory is still 142.6MB. Free memory was 65.4MB in the beginning and 64.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 453.89ms. Allocated memory was 142.6MB in the beginning and 178.3MB in the end (delta: 35.7MB). Free memory was 64.1MB in the beginning and 140.0MB in the end (delta: -75.9MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1488.61ms. Allocated memory is still 178.3MB. Free memory was 140.0MB in the beginning and 134.6MB in the end (delta: 5.4MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 7.12ms. Allocated memory is still 178.3MB. Free memory was 134.6MB in the beginning and 133.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet35 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 922]: Data race detected [2023-11-25 00:00:12,405 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre33 could not be translated [2023-11-25 00:00:12,406 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet35 could not be translated [2023-11-25 00:00:12,411 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre33 could not be translated [2023-11-25 00:00:12,411 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet35 could not be translated Data race detected The following path leads to a data race: [L917] 0 int global; VAL [global=0] [L920] 0 void (*f)() = good; VAL [f={-1:0}, global=0] [L926] 0 pthread_t id; VAL [f={-1:0}, global=0, id={2:0}] [L927] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [f={-1:0}, global=0, id={2:0}] [L928] 0 f = bad VAL [f={-1:2}, global=0, id={2:0}] [L922] 1 f() VAL [arg={0:0}, arg={0:0}, f={-1:2}, global=0] Now there is a data race on ~f~0 between C: f = bad [928] and C: f() [922] - UnprovableResult [Line: 928]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 929]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 927]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 918]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 918]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 83 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 358 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 224 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=462occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 275 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 53 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-25 00:00:12,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90b7a561-1afd-4b63-90bc-50c676e075d7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE