./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 527bcce2 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_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5 --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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:45:01,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:45:01,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-21 19:45:01,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:45:01,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:45:01,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:45:01,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:45:01,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:45:01,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:45:01,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:45:01,554 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:45:01,556 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:45:01,556 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:45:01,559 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:45:01,560 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:45:01,560 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:45:01,562 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:45:01,566 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:45:01,567 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:45:01,567 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:45:01,568 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:45:01,569 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:45:01,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:45:01,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:45:01,571 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:45:01,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:45:01,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:45:01,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:45:01,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:45:01,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:45:01,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:45:01,576 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-21 19:45:01,576 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:45:01,577 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:45:01,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:45:01,577 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:45:01,578 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:45:01,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:45:01,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:45:01,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:45:01,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:45:01,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:45:01,581 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:45:01,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:45:01,582 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:45:01,582 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:45:01,582 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:45:01,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:45:01,583 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_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-21 19:45:01,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:45:01,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:45:01,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:45:01,970 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:45:01,970 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:45:01,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-21 19:45:05,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:45:05,759 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:45:05,765 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-21 19:45:05,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/data/7e2e28f47/d97e5a53431c4255915bc625772e0bcf/FLAGfebb1f15d [2023-11-21 19:45:05,810 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/data/7e2e28f47/d97e5a53431c4255915bc625772e0bcf [2023-11-21 19:45:05,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:45:05,815 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:45:05,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:45:05,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:45:05,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:45:05,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:45:05" (1/1) ... [2023-11-21 19:45:05,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3383b8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:05, skipping insertion in model container [2023-11-21 19:45:05,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:45:05" (1/1) ... [2023-11-21 19:45:05,894 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:45:06,203 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 19:45:06,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:45:06,700 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:45:06,721 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 19:45:06,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:45:06,870 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:45:06,871 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:45:06,871 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:45:06,882 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:45:06,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06 WrapperNode [2023-11-21 19:45:06,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:45:06,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:45:06,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:45:06,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:45:06,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:06,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,001 INFO L138 Inliner]: procedures = 325, calls = 54, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-21 19:45:07,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:45:07,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:45:07,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:45:07,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:45:07,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:45:07,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:45:07,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:45:07,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:45:07,066 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (1/1) ... [2023-11-21 19:45:07,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:45:07,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:45:07,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:45:07,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43989218-35b9-4fb5-8ff5-3ba081fa0133/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:45:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:45:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:45:07,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:45:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:45:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:45:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-21 19:45:07,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-21 19:45:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 19:45:07,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 19:45:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 19:45:07,201 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 19:45:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 19:45:07,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 19:45:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:45:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:45:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:45:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:45:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:45:07,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:45:07,209 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:45:07,445 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:45:07,448 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:45:07,941 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:45:08,009 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:45:08,009 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:45:08,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:45:08 BoogieIcfgContainer [2023-11-21 19:45:08,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:45:08,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:45:08,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:45:08,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:45:08,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:45:05" (1/3) ... [2023-11-21 19:45:08,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30103a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:45:08, skipping insertion in model container [2023-11-21 19:45:08,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:06" (2/3) ... [2023-11-21 19:45:08,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30103a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:45:08, skipping insertion in model container [2023-11-21 19:45:08,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:45:08" (3/3) ... [2023-11-21 19:45:08,025 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2023-11-21 19:45:08,038 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 19:45:08,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:45:08,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-21 19:45:08,055 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:45:08,342 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-21 19:45:08,411 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 294 places, 286 transitions, 669 flow [2023-11-21 19:45:25,856 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 301471 states, 301060 states have (on average 5.057985119245333) internal successors, (1522757), 301470 states have internal predecessors, (1522757), 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) [2023-11-21 19:45:25,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:45:25,922 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;@76ec4815, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:45:25,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-21 19:45:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 301471 states, 301060 states have (on average 5.057985119245333) internal successors, (1522757), 301470 states have internal predecessors, (1522757), 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) [2023-11-21 19:45:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 19:45:26,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:26,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:45:26,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 19:45:26,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:26,664 INFO L85 PathProgramCache]: Analyzing trace with hash 801025672, now seen corresponding path program 1 times [2023-11-21 19:45:26,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:26,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014893382] [2023-11-21 19:45:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:26,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:27,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:27,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014893382] [2023-11-21 19:45:27,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014893382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:27,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:27,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:45:27,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090355115] [2023-11-21 19:45:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:27,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:45:27,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:45:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:45:29,290 INFO L87 Difference]: Start difference. First operand has 301471 states, 301060 states have (on average 5.057985119245333) internal successors, (1522757), 301470 states have internal predecessors, (1522757), 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 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2023-11-21 19:45:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:33,471 INFO L93 Difference]: Finished difference Result 128634 states and 606448 transitions. [2023-11-21 19:45:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:45:33,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2023-11-21 19:45:33,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:35,804 INFO L225 Difference]: With dead ends: 128634 [2023-11-21 19:45:35,804 INFO L226 Difference]: Without dead ends: 128634 [2023-11-21 19:45:35,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:45:35,810 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 452 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 19:45:35,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 858 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 19:45:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128634 states. [2023-11-21 19:45:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128634 to 120272. [2023-11-21 19:45:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120272 states, 120256 states have (on average 4.775004989356041) internal successors, (574223), 120271 states have internal predecessors, (574223), 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) [2023-11-21 19:45:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120272 states to 120272 states and 574223 transitions. [2023-11-21 19:45:43,338 INFO L78 Accepts]: Start accepts. Automaton has 120272 states and 574223 transitions. Word has length 22 [2023-11-21 19:45:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:43,339 INFO L495 AbstractCegarLoop]: Abstraction has 120272 states and 574223 transitions. [2023-11-21 19:45:43,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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) [2023-11-21 19:45:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 120272 states and 574223 transitions. [2023-11-21 19:45:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 19:45:43,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:43,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:45:43,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:45:43,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-21 19:45:43,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:43,345 INFO L85 PathProgramCache]: Analyzing trace with hash 464122076, now seen corresponding path program 1 times [2023-11-21 19:45:43,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:43,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19222454] [2023-11-21 19:45:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:43,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:43,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19222454] [2023-11-21 19:45:43,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19222454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:43,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:43,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:45:43,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294899333] [2023-11-21 19:45:43,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:43,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:45:43,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:45:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:45:43,445 INFO L87 Difference]: Start difference. First operand 120272 states and 574223 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-21 19:45:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:45,525 INFO L93 Difference]: Finished difference Result 120182 states and 573972 transitions. [2023-11-21 19:45:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:45:45,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2023-11-21 19:45:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:47,337 INFO L225 Difference]: With dead ends: 120182 [2023-11-21 19:45:47,337 INFO L226 Difference]: Without dead ends: 120182 [2023-11-21 19:45:47,340 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 [2023-11-21 19:45:47,341 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 19 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:45:47,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 291 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:45:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120182 states.