./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for data races
Using default analysis
Version 4fc63b2a
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_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2 --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 22ccde2ce516925ebfe813d783d47f1167b5115e5910734aa9e1bf526ce8c733
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-4fc63b2
[2024-11-02 11:22:57,065 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-02 11:22:57,158 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DataRace-32bit-Taipan_Default.epf
[2024-11-02 11:22:57,166 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-02 11:22:57,166 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-02 11:22:57,205 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-02 11:22:57,205 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-02 11:22:57,206 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-02 11:22:57,207 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-02 11:22:57,209 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-02 11:22:57,210 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2024-11-02 11:22:57,210 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2024-11-02 11:22:57,211 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2024-11-02 11:22:57,215 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2024-11-02 11:22:57,216 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2024-11-02 11:22:57,216 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2024-11-02 11:22:57,217 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2024-11-02 11:22:57,217 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2024-11-02 11:22:57,217 INFO  L153        SettingsManager]:  * Interval Domain=false
[2024-11-02 11:22:57,218 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2024-11-02 11:22:57,218 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2024-11-02 11:22:57,219 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2024-11-02 11:22:57,220 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-02 11:22:57,220 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-02 11:22:57,220 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-02 11:22:57,221 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-02 11:22:57,221 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-02 11:22:57,221 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-02 11:22:57,222 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-02 11:22:57,222 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-02 11:22:57,224 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-02 11:22:57,224 INFO  L153        SettingsManager]:  * Check absence of data races in concurrent programs=true
[2024-11-02 11:22:57,224 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-02 11:22:57,224 INFO  L153        SettingsManager]:  * Check unreachability of reach_error function=false
[2024-11-02 11:22:57,225 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-02 11:22:57,225 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-02 11:22:57,225 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-02 11:22:57,226 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-02 11:22:57,226 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-02 11:22:57,226 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2024-11-02 11:22:57,226 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-02 11:22:57,227 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-02 11:22:57,227 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-02 11:22:57,227 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2024-11-02 11:22:57,228 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-02 11:22:57,228 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-02 11:22:57,229 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2024-11-02 11:22:57,229 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-02 11:22:57,229 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_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/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_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2
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 -> 22ccde2ce516925ebfe813d783d47f1167b5115e5910734aa9e1bf526ce8c733
[2024-11-02 11:22:57,541 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-02 11:22:57,583 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-02 11:22:57,587 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-02 11:22:57,589 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-02 11:22:57,589 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-02 11:22:57,591 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i
Unable to find full path for "g++"
[2024-11-02 11:22:59,769 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-02 11:23:00,007 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-02 11:23:00,007 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/sv-benchmarks/c/pthread-ext/47_ticket_lock_hc_backoff_vs.i
[2024-11-02 11:23:00,030 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/data/9c802c054/6bf6d99e045643e9abded942d90dc0db/FLAG3d02044da
[2024-11-02 11:23:00,352 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/data/9c802c054/6bf6d99e045643e9abded942d90dc0db
[2024-11-02 11:23:00,357 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-02 11:23:00,360 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-02 11:23:00,363 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-02 11:23:00,363 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-02 11:23:00,369 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-02 11:23:00,371 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:00" (1/1) ...
[2024-11-02 11:23:00,373 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb64408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:00, skipping insertion in model container
[2024-11-02 11:23:00,377 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:00" (1/1) ...
[2024-11-02 11:23:00,467 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-02 11:23:01,085 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 11:23:01,094 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-02 11:23:01,153 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-02 11:23:01,203 INFO  L204         MainTranslator]: Completed translation
[2024-11-02 11:23:01,203 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01 WrapperNode
[2024-11-02 11:23:01,204 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-02 11:23:01,205 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-02 11:23:01,205 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-02 11:23:01,205 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-02 11:23:01,214 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,231 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,268 INFO  L138                Inliner]: procedures = 169, calls = 15, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 188
[2024-11-02 11:23:01,273 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-02 11:23:01,273 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-02 11:23:01,274 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-02 11:23:01,274 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-02 11:23:01,287 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,287 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,317 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,318 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,334 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,343 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,349 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,351 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,357 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-02 11:23:01,365 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-02 11:23:01,366 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-02 11:23:01,366 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-02 11:23:01,367 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (1/1) ...
[2024-11-02 11:23:01,373 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2024-11-02 11:23:01,406 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/z3
[2024-11-02 11:23:01,421 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2024-11-02 11:23:01,425 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8782bacc-b631-4087-b012-fc355737ddc8/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2024-11-02 11:23:01,453 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2024-11-02 11:23:01,453 INFO  L130     BoogieDeclarations]: Found specification of procedure thr1
[2024-11-02 11:23:01,454 INFO  L138     BoogieDeclarations]: Found implementation of procedure thr1
[2024-11-02 11:23:01,454 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2024-11-02 11:23:01,454 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-02 11:23:01,454 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-02 11:23:01,456 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-02 11:23:01,456 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2024-11-02 11:23:01,457 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-02 11:23:01,457 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-02 11:23:01,459 WARN  L207             CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-02 11:23:01,592 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-02 11:23:01,595 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-02 11:23:02,008 INFO  L283             CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-02 11:23:02,008 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-02 11:23:02,199 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-02 11:23:02,199 INFO  L316             CfgBuilder]: Removed 5 assume(true) statements.
[2024-11-02 11:23:02,199 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:02 BoogieIcfgContainer
[2024-11-02 11:23:02,200 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-02 11:23:02,203 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-02 11:23:02,203 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-02 11:23:02,207 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-02 11:23:02,207 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:23:00" (1/3) ...
[2024-11-02 11:23:02,208 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496acff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:02, skipping insertion in model container
[2024-11-02 11:23:02,208 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:01" (2/3) ...
[2024-11-02 11:23:02,209 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496acff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:02, skipping insertion in model container
[2024-11-02 11:23:02,209 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:02" (3/3) ...
[2024-11-02 11:23:02,210 INFO  L112   eAbstractionObserver]: Analyzing ICFG 47_ticket_lock_hc_backoff_vs.i
[2024-11-02 11:23:02,229 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-02 11:23:02,229 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations.
[2024-11-02 11:23:02,229 INFO  L489   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-02 11:23:02,308 INFO  L143    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-11-02 11:23:02,351 INFO  L113   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 156 places, 168 transitions, 340 flow
[2024-11-02 11:23:02,609 INFO  L135   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 4993 states, 4800 states have (on average 2.252291666666667) internal successors, (10811), 4992 states have internal predecessors, (10811), 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)
[2024-11-02 11:23:02,645 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-02 11:23:02,653 INFO  L333      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@6efea1fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-02 11:23:02,653 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 37 error locations.
[2024-11-02 11:23:02,668 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4993 states, 4800 states have (on average 2.252291666666667) internal successors, (10811), 4992 states have internal predecessors, (10811), 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)
[2024-11-02 11:23:02,676 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-02 11:23:02,677 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 11:23:02,677 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 11:23:02,678 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] ===
[2024-11-02 11:23:02,683 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 11:23:02,685 INFO  L85        PathProgramCache]: Analyzing trace with hash 1814190230, now seen corresponding path program 1 times
[2024-11-02 11:23:02,695 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2024-11-02 11:23:02,695 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053314474]
[2024-11-02 11:23:02,696 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 11:23:02,696 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-02 11:23:02,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 11:23:02,904 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-02 11:23:02,905 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2024-11-02 11:23:02,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053314474]
[2024-11-02 11:23:02,906 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053314474] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-02 11:23:02,906 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-02 11:23:02,907 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-02 11:23:02,908 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887744886]
[2024-11-02 11:23:02,909 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 11:23:02,913 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-02 11:23:02,913 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2024-11-02 11:23:02,938 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-02 11:23:02,938 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 11:23:02,954 INFO  L87              Difference]: Start difference. First operand  has 4993 states, 4800 states have (on average 2.252291666666667) internal successors, (10811), 4992 states have internal predecessors, (10811), 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 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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)
[2024-11-02 11:23:03,159 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 11:23:03,160 INFO  L93              Difference]: Finished difference Result 8301 states and 18813 transitions.
[2024-11-02 11:23:03,161 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-02 11:23:03,162 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20
[2024-11-02 11:23:03,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 11:23:03,279 INFO  L225             Difference]: With dead ends: 8301
[2024-11-02 11:23:03,279 INFO  L226             Difference]: Without dead ends: 3327
[2024-11-02 11:23:03,295 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 11:23:03,298 INFO  L432           NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-02 11:23:03,301 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-02 11:23:03,333 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3327 states.
[2024-11-02 11:23:03,476 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3327.
[2024-11-02 11:23:03,485 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3327 states, 3249 states have (on average 2.061865189289012) internal successors, (6699), 3326 states have internal predecessors, (6699), 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)
[2024-11-02 11:23:03,497 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 6699 transitions.
[2024-11-02 11:23:03,510 INFO  L78                 Accepts]: Start accepts. Automaton has 3327 states and 6699 transitions. Word has length 20
[2024-11-02 11:23:03,510 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 11:23:03,511 INFO  L471      AbstractCegarLoop]: Abstraction has 3327 states and 6699 transitions.
[2024-11-02 11:23:03,511 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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)
[2024-11-02 11:23:03,511 INFO  L276                IsEmpty]: Start isEmpty. Operand 3327 states and 6699 transitions.
[2024-11-02 11:23:03,512 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-11-02 11:23:03,512 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 11:23:03,513 INFO  L215           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]
[2024-11-02 11:23:03,514 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-02 11:23:03,514 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] ===
[2024-11-02 11:23:03,516 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 11:23:03,516 INFO  L85        PathProgramCache]: Analyzing trace with hash -1380739369, now seen corresponding path program 1 times
[2024-11-02 11:23:03,516 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2024-11-02 11:23:03,516 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128157000]
[2024-11-02 11:23:03,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 11:23:03,517 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-02 11:23:03,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 11:23:03,684 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-02 11:23:03,685 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2024-11-02 11:23:03,685 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128157000]
[2024-11-02 11:23:03,685 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128157000] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-02 11:23:03,685 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-02 11:23:03,686 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-02 11:23:03,686 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139303977]
[2024-11-02 11:23:03,686 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 11:23:03,687 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-02 11:23:03,688 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2024-11-02 11:23:03,688 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-02 11:23:03,688 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-02 11:23:03,689 INFO  L87              Difference]: Start difference. First operand 3327 states and 6699 transitions. Second operand  has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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)
[2024-11-02 11:23:03,856 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 11:23:03,856 INFO  L93              Difference]: Finished difference Result 4467 states and 8861 transitions.
[2024-11-02 11:23:03,857 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-02 11:23:03,857 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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 26
[2024-11-02 11:23:03,858 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 11:23:03,919 INFO  L225             Difference]: With dead ends: 4467
[2024-11-02 11:23:03,919 INFO  L226             Difference]: Without dead ends: 4239
[2024-11-02 11:23:03,925 INFO  L431           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
[2024-11-02 11:23:03,927 INFO  L432           NwaCegarLoop]: 156 mSDtfsCounter, 107 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-02 11:23:03,928 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 265 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-02 11:23:03,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4239 states.
[2024-11-02 11:23:04,044 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3339.
[2024-11-02 11:23:04,053 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3339 states, 3269 states have (on average 2.0131538696849187) internal successors, (6581), 3338 states have internal predecessors, (6581), 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)
[2024-11-02 11:23:04,069 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 6581 transitions.
[2024-11-02 11:23:04,078 INFO  L78                 Accepts]: Start accepts. Automaton has 3339 states and 6581 transitions. Word has length 26
[2024-11-02 11:23:04,079 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-02 11:23:04,079 INFO  L471      AbstractCegarLoop]: Abstraction has 3339 states and 6581 transitions.
[2024-11-02 11:23:04,079 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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)
[2024-11-02 11:23:04,080 INFO  L276                IsEmpty]: Start isEmpty. Operand 3339 states and 6581 transitions.
[2024-11-02 11:23:04,081 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2024-11-02 11:23:04,081 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 11:23:04,081 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 11:23:04,082 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-02 11:23:04,082 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] ===
[2024-11-02 11:23:04,083 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 11:23:04,083 INFO  L85        PathProgramCache]: Analyzing trace with hash -857941352, now seen corresponding path program 1 times
[2024-11-02 11:23:04,083 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2024-11-02 11:23:04,084 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424103695]
[2024-11-02 11:23:04,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 11:23:04,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-02 11:23:04,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-02 11:23:04,102 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-02 11:23:04,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-02 11:23:04,153 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2024-11-02 11:23:04,153 INFO  L325         BasicCegarLoop]: Counterexample is feasible
[2024-11-02 11:23:04,155 INFO  L782   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining)
[2024-11-02 11:23:04,157 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining)
[2024-11-02 11:23:04,158 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining)
[2024-11-02 11:23:04,158 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining)
[2024-11-02 11:23:04,158 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining)
[2024-11-02 11:23:04,158 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining)
[2024-11-02 11:23:04,159 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining)
[2024-11-02 11:23:04,159 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining)
[2024-11-02 11:23:04,159 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining)
[2024-11-02 11:23:04,159 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining)
[2024-11-02 11:23:04,160 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining)
[2024-11-02 11:23:04,160 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining)
[2024-11-02 11:23:04,160 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining)
[2024-11-02 11:23:04,163 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining)
[2024-11-02 11:23:04,164 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining)
[2024-11-02 11:23:04,164 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining)
[2024-11-02 11:23:04,164 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining)
[2024-11-02 11:23:04,165 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining)
[2024-11-02 11:23:04,165 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining)
[2024-11-02 11:23:04,166 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining)
[2024-11-02 11:23:04,166 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining)
[2024-11-02 11:23:04,166 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining)
[2024-11-02 11:23:04,168 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining)
[2024-11-02 11:23:04,168 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining)
[2024-11-02 11:23:04,168 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining)
[2024-11-02 11:23:04,169 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining)
[2024-11-02 11:23:04,170 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining)
[2024-11-02 11:23:04,170 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining)
[2024-11-02 11:23:04,171 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining)
[2024-11-02 11:23:04,171 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining)
[2024-11-02 11:23:04,171 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining)
[2024-11-02 11:23:04,172 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining)
[2024-11-02 11:23:04,172 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining)
[2024-11-02 11:23:04,173 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining)
[2024-11-02 11:23:04,173 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining)
[2024-11-02 11:23:04,174 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining)
[2024-11-02 11:23:04,174 INFO  L782   garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining)
[2024-11-02 11:23:04,174 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-02 11:23:04,182 INFO  L407         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2024-11-02 11:23:04,184 WARN  L244   ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2024-11-02 11:23:04,185 INFO  L489   ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2024-11-02 11:23:04,277 INFO  L143    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2024-11-02 11:23:04,287 INFO  L113   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 219 places, 236 transitions, 482 flow
[2024-11-02 11:23:13,783 INFO  L135   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 306243 states, 303698 states have (on average 3.2925702507095864) internal successors, (999947), 306242 states have internal predecessors, (999947), 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)
[2024-11-02 11:23:13,790 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-02 11:23:13,791 INFO  L333      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@6efea1fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-02 11:23:13,791 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 49 error locations.
[2024-11-02 11:23:14,240 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 306243 states, 303698 states have (on average 3.2925702507095864) internal successors, (999947), 306242 states have internal predecessors, (999947), 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)
[2024-11-02 11:23:14,241 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-02 11:23:14,241 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-02 11:23:14,241 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-02 11:23:14,242 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] ===
[2024-11-02 11:23:14,242 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-02 11:23:14,243 INFO  L85        PathProgramCache]: Analyzing trace with hash 1758830487, now seen corresponding path program 1 times
[2024-11-02 11:23:14,243 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2024-11-02 11:23:14,243 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944235424]
[2024-11-02 11:23:14,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-02 11:23:14,244 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-02 11:23:14,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-02 11:23:14,270 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-02 11:23:14,271 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2024-11-02 11:23:14,271 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944235424]
[2024-11-02 11:23:14,271 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944235424] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-02 11:23:14,272 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-02 11:23:14,272 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-02 11:23:14,272 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35107829]
[2024-11-02 11:23:14,272 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-02 11:23:14,273 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-02 11:23:14,273 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2024-11-02 11:23:14,274 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-02 11:23:14,274 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 11:23:14,636 INFO  L87              Difference]: Start difference. First operand  has 306243 states, 303698 states have (on average 3.2925702507095864) internal successors, (999947), 306242 states have internal predecessors, (999947), 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 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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)
[2024-11-02 11:23:23,907 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-02 11:23:23,908 INFO  L93              Difference]: Finished difference Result 475955 states and 1619397 transitions.
[2024-11-02 11:23:23,908 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-02 11:23:23,908 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20
[2024-11-02 11:23:23,909 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-02 11:23:25,935 INFO  L225             Difference]: With dead ends: 475955
[2024-11-02 11:23:25,936 INFO  L226             Difference]: Without dead ends: 169713
[2024-11-02 11:23:26,460 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-02 11:23:26,462 INFO  L432           NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-02 11:23:26,463 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]