./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/dekker-b-unfair.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/dekker-b-unfair.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 00eedb63fb9d62a729cbdbbc78c20dc2306cd626b581321e129d31c09fc5db8e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:11:05,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:11:06,080 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:11:06,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:11:06,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:11:06,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:11:06,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:11:06,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:11:06,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:11:06,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:11:06,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:11:06,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:11:06,135 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:11:06,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:11:06,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:11:06,138 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:11:06,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:11:06,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:11:06,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:11:06,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:11:06,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:11:06,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:11:06,143 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:11:06,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:11:06,144 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:11:06,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:11:06,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:11:06,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:11:06,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:11:06,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:11:06,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:11:06,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:06,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:11:06,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:11:06,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:11:06,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:11:06,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:11:06,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:11:06,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:11:06,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:11:06,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:11:06,149 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eedb63fb9d62a729cbdbbc78c20dc2306cd626b581321e129d31c09fc5db8e [2024-10-31 22:11:06,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:11:06,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:11:06,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:11:06,514 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:11:06,515 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:11:06,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-atomic/dekker-b-unfair.i Unable to find full path for "g++" [2024-10-31 22:11:08,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:11:08,833 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:11:08,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/sv-benchmarks/c/pthread-atomic/dekker-b-unfair.i [2024-10-31 22:11:08,850 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/data/db6ccbf0e/517eea2886574897b3a559a59cc26943/FLAGc1cc2b390 [2024-10-31 22:11:08,866 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/data/db6ccbf0e/517eea2886574897b3a559a59cc26943 [2024-10-31 22:11:08,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:11:08,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:11:08,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:08,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:11:08,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:11:08,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:08" (1/1) ... [2024-10-31 22:11:08,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7542093b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:08, skipping insertion in model container [2024-10-31 22:11:08,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:08" (1/1) ... [2024-10-31 22:11:09,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:11:09,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:09,472 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:11:09,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:09,565 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:11:09,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09 WrapperNode [2024-10-31 22:11:09,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:09,567 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:09,567 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:11:09,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:11:09,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,628 INFO L138 Inliner]: procedures = 161, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2024-10-31 22:11:09,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:09,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:11:09,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:11:09,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:11:09,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,646 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:11:09,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:11:09,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:11:09,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:11:09,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (1/1) ... [2024-10-31 22:11:09,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:09,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:09,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:09,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:11:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-31 22:11:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-31 22:11:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:11:09,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:11:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:11:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:11:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:11:09,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:11:09,726 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:11:09,851 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:11:09,853 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:11:10,129 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:11:10,129 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:11:10,147 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:11:10,148 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:11:10,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:10 BoogieIcfgContainer [2024-10-31 22:11:10,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:11:10,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:11:10,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:11:10,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:11:10,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:11:08" (1/3) ... [2024-10-31 22:11:10,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5baa05ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:10, skipping insertion in model container [2024-10-31 22:11:10,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:09" (2/3) ... [2024-10-31 22:11:10,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5baa05ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:10, skipping insertion in model container [2024-10-31 22:11:10,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:10" (3/3) ... [2024-10-31 22:11:10,156 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker-b-unfair.i [2024-10-31 22:11:10,174 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:11:10,174 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-31 22:11:10,174 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:11:10,314 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:11:10,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 185 transitions, 384 flow [2024-10-31 22:11:10,530 INFO L124 PetriNetUnfolderBase]: 16/183 cut-off events. [2024-10-31 22:11:10,531 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:11:10,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 16/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 435 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2024-10-31 22:11:10,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 185 transitions, 384 flow [2024-10-31 22:11:10,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 178 transitions, 365 flow [2024-10-31 22:11:10,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:10,584 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50c842ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:10,584 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-10-31 22:11:10,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:10,590 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-10-31 22:11:10,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:10,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:10,591 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:10,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:10,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:10,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1850524738, now seen corresponding path program 1 times [2024-10-31 22:11:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484404089] [2024-10-31 22:11:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:10,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:10,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484404089] [2024-10-31 22:11:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484404089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:10,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:10,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336425915] [2024-10-31 22:11:10,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:10,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:10,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:11,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 185 [2024-10-31 22:11:11,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 178 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2024-10-31 22:11:11,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:11,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 185 [2024-10-31 22:11:11,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:11,263 INFO L124 PetriNetUnfolderBase]: 98/790 cut-off events. [2024-10-31 22:11:11,264 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-10-31 22:11:11,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 790 events. 98/790 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4984 event pairs, 23 based on Foata normal form. 66/687 useless extension candidates. Maximal degree in co-relation 812. Up to 99 conditions per place. [2024-10-31 22:11:11,279 INFO L140 encePairwiseOnDemand]: 159/185 looper letters, 22 selfloop transitions, 11 changer transitions 1/177 dead transitions. [2024-10-31 22:11:11,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 177 transitions, 435 flow [2024-10-31 22:11:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2024-10-31 22:11:11,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9225225225225225 [2024-10-31 22:11:11,295 INFO L175 Difference]: Start difference. First operand has 169 places, 178 transitions, 365 flow. Second operand 3 states and 512 transitions. [2024-10-31 22:11:11,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 177 transitions, 435 flow [2024-10-31 22:11:11,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 177 transitions, 427 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:11:11,305 INFO L231 Difference]: Finished difference. Result has 166 places, 174 transitions, 424 flow [2024-10-31 22:11:11,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=166, PETRI_TRANSITIONS=174} [2024-10-31 22:11:11,315 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -3 predicate places. [2024-10-31 22:11:11,315 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 174 transitions, 424 flow [2024-10-31 22:11:11,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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) [2024-10-31 22:11:11,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:11,316 INFO L204 CegarLoopForPetriNet]: 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, 1, 1, 1, 1] [2024-10-31 22:11:11,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:11:11,317 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:11,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash 857512282, now seen corresponding path program 1 times [2024-10-31 22:11:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:11,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332382306] [2024-10-31 22:11:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:11,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:11,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332382306] [2024-10-31 22:11:11,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332382306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:11,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:11,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:11,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122844323] [2024-10-31 22:11:11,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:11,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:11:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:11:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:11:11,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 185 [2024-10-31 22:11:11,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 174 transitions, 424 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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) [2024-10-31 22:11:11,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:11,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 185 [2024-10-31 22:11:11,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:11,768 INFO L124 PetriNetUnfolderBase]: 73/668 cut-off events. [2024-10-31 22:11:11,768 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-31 22:11:11,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 668 events. 73/668 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4137 event pairs, 15 based on Foata normal form. 6/550 useless extension candidates. Maximal degree in co-relation 795. Up to 62 conditions per place. [2024-10-31 22:11:11,774 INFO L140 encePairwiseOnDemand]: 174/185 looper letters, 14 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2024-10-31 22:11:11,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 177 transitions, 474 flow [2024-10-31 22:11:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:11:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:11:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 649 transitions. [2024-10-31 22:11:11,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8770270270270271 [2024-10-31 22:11:11,778 INFO L175 Difference]: Start difference. First operand has 166 places, 174 transitions, 424 flow. Second operand 4 states and 649 transitions. [2024-10-31 22:11:11,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 177 transitions, 474 flow [2024-10-31 22:11:11,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 177 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:11,784 INFO L231 Difference]: Finished difference. Result has 168 places, 176 transitions, 444 flow [2024-10-31 22:11:11,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=444, PETRI_PLACES=168, PETRI_TRANSITIONS=176} [2024-10-31 22:11:11,786 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, -1 predicate places. [2024-10-31 22:11:11,786 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 176 transitions, 444 flow [2024-10-31 22:11:11,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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) [2024-10-31 22:11:11,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:11,787 INFO L204 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:11,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:11:11,787 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:11,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:11,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1088403536, now seen corresponding path program 1 times [2024-10-31 22:11:11,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:11,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266626531] [2024-10-31 22:11:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:11,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:11,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266626531] [2024-10-31 22:11:11,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266626531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:11,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:11,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:11,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963516528] [2024-10-31 22:11:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:11,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:11,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:11,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:11,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 185 [2024-10-31 22:11:11,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 176 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2024-10-31 22:11:11,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:11,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 185 [2024-10-31 22:11:11,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:12,064 INFO L124 PetriNetUnfolderBase]: 75/853 cut-off events. [2024-10-31 22:11:12,065 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-31 22:11:12,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 853 events. 75/853 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5626 event pairs, 16 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 890. Up to 75 conditions per place. [2024-10-31 22:11:12,075 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 12 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2024-10-31 22:11:12,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 180 transitions, 486 flow [2024-10-31 22:11:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2024-10-31 22:11:12,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9117117117117117 [2024-10-31 22:11:12,081 INFO L175 Difference]: Start difference. First operand has 168 places, 176 transitions, 444 flow. Second operand 3 states and 506 transitions. [2024-10-31 22:11:12,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 180 transitions, 486 flow [2024-10-31 22:11:12,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 180 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:12,088 INFO L231 Difference]: Finished difference. Result has 171 places, 179 transitions, 472 flow [2024-10-31 22:11:12,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=171, PETRI_TRANSITIONS=179} [2024-10-31 22:11:12,091 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 2 predicate places. [2024-10-31 22:11:12,092 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 179 transitions, 472 flow [2024-10-31 22:11:12,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2024-10-31 22:11:12,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:12,092 INFO L204 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:12,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:11:12,093 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:12,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:12,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1922159727, now seen corresponding path program 1 times [2024-10-31 22:11:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:12,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329671142] [2024-10-31 22:11:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:12,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:12,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329671142] [2024-10-31 22:11:12,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329671142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:12,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:12,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:12,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971592230] [2024-10-31 22:11:12,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:12,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:12,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:12,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:12,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 185 [2024-10-31 22:11:12,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 179 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2024-10-31 22:11:12,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:12,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 185 [2024-10-31 22:11:12,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:12,461 INFO L124 PetriNetUnfolderBase]: 143/1342 cut-off events. [2024-10-31 22:11:12,461 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-31 22:11:12,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 1342 events. 143/1342 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11004 event pairs, 20 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 1686. Up to 125 conditions per place. [2024-10-31 22:11:12,472 INFO L140 encePairwiseOnDemand]: 178/185 looper letters, 12 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2024-10-31 22:11:12,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 187 transitions, 527 flow [2024-10-31 22:11:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2024-10-31 22:11:12,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9261261261261261 [2024-10-31 22:11:12,475 INFO L175 Difference]: Start difference. First operand has 171 places, 179 transitions, 472 flow. Second operand 3 states and 514 transitions. [2024-10-31 22:11:12,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 187 transitions, 527 flow [2024-10-31 22:11:12,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:12,485 INFO L231 Difference]: Finished difference. Result has 173 places, 185 transitions, 514 flow [2024-10-31 22:11:12,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=173, PETRI_TRANSITIONS=185} [2024-10-31 22:11:12,486 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 4 predicate places. [2024-10-31 22:11:12,486 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 185 transitions, 514 flow [2024-10-31 22:11:12,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2024-10-31 22:11:12,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:12,488 INFO L204 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:12,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:11:12,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:12,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:12,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1443001506, now seen corresponding path program 1 times [2024-10-31 22:11:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:12,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442575882] [2024-10-31 22:11:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:12,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:12,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442575882] [2024-10-31 22:11:12,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442575882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:12,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713612654] [2024-10-31 22:11:12,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:12,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:12,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:12,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 185 [2024-10-31 22:11:12,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 185 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2024-10-31 22:11:12,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:12,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 185 [2024-10-31 22:11:12,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:12,839 INFO L124 PetriNetUnfolderBase]: 182/1457 cut-off events. [2024-10-31 22:11:12,839 INFO L125 PetriNetUnfolderBase]: For 238/255 co-relation queries the response was YES. [2024-10-31 22:11:12,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 1457 events. 182/1457 cut-off events. For 238/255 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12074 event pairs, 29 based on Foata normal form. 0/1199 useless extension candidates. Maximal degree in co-relation 1203. Up to 139 conditions per place. [2024-10-31 22:11:12,849 INFO L140 encePairwiseOnDemand]: 180/185 looper letters, 16 selfloop transitions, 6 changer transitions 0/190 dead transitions. [2024-10-31 22:11:12,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 190 transitions, 575 flow [2024-10-31 22:11:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2024-10-31 22:11:12,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9117117117117117 [2024-10-31 22:11:12,851 INFO L175 Difference]: Start difference. First operand has 173 places, 185 transitions, 514 flow. Second operand 3 states and 506 transitions. [2024-10-31 22:11:12,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 190 transitions, 575 flow [2024-10-31 22:11:12,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 190 transitions, 561 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:12,860 INFO L231 Difference]: Finished difference. Result has 175 places, 189 transitions, 548 flow [2024-10-31 22:11:12,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=175, PETRI_TRANSITIONS=189} [2024-10-31 22:11:12,864 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 6 predicate places. [2024-10-31 22:11:12,864 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 189 transitions, 548 flow [2024-10-31 22:11:12,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2024-10-31 22:11:12,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:12,865 INFO L204 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:12,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:11:12,865 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:12,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:12,866 INFO L85 PathProgramCache]: Analyzing trace with hash 535479866, now seen corresponding path program 1 times [2024-10-31 22:11:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:12,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908226418] [2024-10-31 22:11:12,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:12,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:12,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908226418] [2024-10-31 22:11:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908226418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:12,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995009934] [2024-10-31 22:11:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:12,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:12,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 185 [2024-10-31 22:11:12,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 189 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2024-10-31 22:11:12,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:12,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 185 [2024-10-31 22:11:12,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:13,252 INFO L124 PetriNetUnfolderBase]: 205/1715 cut-off events. [2024-10-31 22:11:13,252 INFO L125 PetriNetUnfolderBase]: For 119/122 co-relation queries the response was YES. [2024-10-31 22:11:13,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2470 conditions, 1715 events. 205/1715 cut-off events. For 119/122 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 15135 event pairs, 41 based on Foata normal form. 0/1412 useless extension candidates. Maximal degree in co-relation 1934. Up to 150 conditions per place. [2024-10-31 22:11:13,265 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 11 selfloop transitions, 5 changer transitions 0/194 dead transitions. [2024-10-31 22:11:13,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 194 transitions, 592 flow [2024-10-31 22:11:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2024-10-31 22:11:13,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9171171171171171 [2024-10-31 22:11:13,268 INFO L175 Difference]: Start difference. First operand has 175 places, 189 transitions, 548 flow. Second operand 3 states and 509 transitions. [2024-10-31 22:11:13,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 194 transitions, 592 flow [2024-10-31 22:11:13,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 194 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:13,274 INFO L231 Difference]: Finished difference. Result has 177 places, 193 transitions, 574 flow [2024-10-31 22:11:13,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=177, PETRI_TRANSITIONS=193} [2024-10-31 22:11:13,275 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 8 predicate places. [2024-10-31 22:11:13,275 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 193 transitions, 574 flow [2024-10-31 22:11:13,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2024-10-31 22:11:13,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:13,276 INFO L204 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:13,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:11:13,276 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:13,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:13,277 INFO L85 PathProgramCache]: Analyzing trace with hash 130670299, now seen corresponding path program 1 times [2024-10-31 22:11:13,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:13,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231723992] [2024-10-31 22:11:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:13,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:13,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:13,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231723992] [2024-10-31 22:11:13,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231723992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:13,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:13,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:13,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163595981] [2024-10-31 22:11:13,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:13,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:13,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:13,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 185 [2024-10-31 22:11:13,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 193 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2024-10-31 22:11:13,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:13,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 185 [2024-10-31 22:11:13,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:13,537 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([453] L710-->L710-1: Formula: (= |v_#race~turn~0_1| 0) InVars {} OutVars{#race~turn~0=|v_#race~turn~0_1|} AuxVars[] AssignedVars[#race~turn~0][135], [Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 125#L710-1true, 214#(= |#race~flag1~0| 0), 177#true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), Black: 179#true, 207#true, 184#true, Black: 186#(= ~turn~0 0), 23#L703-2true]) [2024-10-31 22:11:13,537 INFO L294 olderBase$Statistics]: this new event has 74 ancestors and is cut-off event [2024-10-31 22:11:13,538 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,538 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,538 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,557 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([548] L703-1-->L703-2: Formula: (= |v_#race~turn~0_13| |v_thr1Thread1of1ForFork1_#t~nondet5#1_3|) InVars {thr1Thread1of1ForFork1_#t~nondet5#1=|v_thr1Thread1of1ForFork1_#t~nondet5#1_3|} OutVars{#race~turn~0=|v_#race~turn~0_13|, thr1Thread1of1ForFork1_#t~nondet5#1=|v_thr1Thread1of1ForFork1_#t~nondet5#1_3|} AuxVars[] AssignedVars[#race~turn~0][103], [Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 125#L710-1true, 214#(= |#race~flag1~0| 0), 177#true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), Black: 181#(= |#race~turn~0| 0), 207#true, 184#true, Black: 186#(= ~turn~0 0), 23#L703-2true]) [2024-10-31 22:11:13,558 INFO L294 olderBase$Statistics]: this new event has 74 ancestors and is cut-off event [2024-10-31 22:11:13,558 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,558 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,558 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,569 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([548] L703-1-->L703-2: Formula: (= |v_#race~turn~0_13| |v_thr1Thread1of1ForFork1_#t~nondet5#1_3|) InVars {thr1Thread1of1ForFork1_#t~nondet5#1=|v_thr1Thread1of1ForFork1_#t~nondet5#1_3|} OutVars{#race~turn~0=|v_#race~turn~0_13|, thr1Thread1of1ForFork1_#t~nondet5#1=|v_thr1Thread1of1ForFork1_#t~nondet5#1_3|} AuxVars[] AssignedVars[#race~turn~0][103], [Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 214#(= |#race~flag1~0| 0), 177#true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), Black: 181#(= |#race~turn~0| 0), 207#true, 184#true, Black: 186#(= ~turn~0 0), 121#L710-2true, 23#L703-2true]) [2024-10-31 22:11:13,570 INFO L294 olderBase$Statistics]: this new event has 75 ancestors and is cut-off event [2024-10-31 22:11:13,570 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is cut-off event [2024-10-31 22:11:13,570 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is cut-off event [2024-10-31 22:11:13,570 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is cut-off event [2024-10-31 22:11:13,570 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([460] L710-2-->L710-4: Formula: (= v_~turn~0_4 1) InVars {~turn~0=v_~turn~0_4} OutVars{~turn~0=v_~turn~0_4} AuxVars[] AssignedVars[][128], [Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 214#(= |#race~flag1~0| 0), 177#true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), 90#L703true, Black: 179#true, 160#L710-4true, 207#true, 184#true, Black: 186#(= ~turn~0 0)]) [2024-10-31 22:11:13,570 INFO L294 olderBase$Statistics]: this new event has 74 ancestors and is cut-off event [2024-10-31 22:11:13,571 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,571 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,571 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:13,572 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([564] L704-2-->L704-3: Formula: (= |v_#race~flag1~0_7| |v_thr1Thread1of1ForFork1_#t~nondet6#1_3|) InVars {thr1Thread1of1ForFork1_#t~nondet6#1=|v_thr1Thread1of1ForFork1_#t~nondet6#1_3|} OutVars{thr1Thread1of1ForFork1_#t~nondet6#1=|v_thr1Thread1of1ForFork1_#t~nondet6#1_3|, #race~flag1~0=|v_#race~flag1~0_7|} AuxVars[] AssignedVars[#race~flag1~0][148], [114#L704-3true, Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 177#true, 106#L709-2true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), Black: 181#(= |#race~turn~0| 0), 207#true, 184#true, Black: 186#(= ~turn~0 0), 212#true]) [2024-10-31 22:11:13,572 INFO L294 olderBase$Statistics]: this new event has 77 ancestors and is cut-off event [2024-10-31 22:11:13,573 INFO L297 olderBase$Statistics]: existing Event has 71 ancestors and is cut-off event [2024-10-31 22:11:13,573 INFO L297 olderBase$Statistics]: existing Event has 71 ancestors and is cut-off event [2024-10-31 22:11:13,573 INFO L297 olderBase$Statistics]: existing Event has 71 ancestors and is cut-off event [2024-10-31 22:11:13,739 INFO L124 PetriNetUnfolderBase]: 328/2555 cut-off events. [2024-10-31 22:11:13,740 INFO L125 PetriNetUnfolderBase]: For 212/221 co-relation queries the response was YES. [2024-10-31 22:11:13,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3796 conditions, 2555 events. 328/2555 cut-off events. For 212/221 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25278 event pairs, 42 based on Foata normal form. 2/2106 useless extension candidates. Maximal degree in co-relation 3672. Up to 221 conditions per place. [2024-10-31 22:11:13,763 INFO L140 encePairwiseOnDemand]: 179/185 looper letters, 11 selfloop transitions, 6 changer transitions 0/199 dead transitions. [2024-10-31 22:11:13,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 199 transitions, 625 flow [2024-10-31 22:11:13,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2024-10-31 22:11:13,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9225225225225225 [2024-10-31 22:11:13,766 INFO L175 Difference]: Start difference. First operand has 177 places, 193 transitions, 574 flow. Second operand 3 states and 512 transitions. [2024-10-31 22:11:13,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 199 transitions, 625 flow [2024-10-31 22:11:13,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 199 transitions, 615 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:13,773 INFO L231 Difference]: Finished difference. Result has 179 places, 198 transitions, 614 flow [2024-10-31 22:11:13,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=179, PETRI_TRANSITIONS=198} [2024-10-31 22:11:13,775 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 10 predicate places. [2024-10-31 22:11:13,775 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 198 transitions, 614 flow [2024-10-31 22:11:13,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2024-10-31 22:11:13,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:13,777 INFO L204 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:13,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:11:13,777 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:13,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:13,778 INFO L85 PathProgramCache]: Analyzing trace with hash 972703830, now seen corresponding path program 1 times [2024-10-31 22:11:13,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:13,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941703402] [2024-10-31 22:11:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:13,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:13,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:13,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941703402] [2024-10-31 22:11:13,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941703402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:13,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:13,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:13,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402436878] [2024-10-31 22:11:13,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:13,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:13,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:13,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:13,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:13,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 185 [2024-10-31 22:11:13,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 198 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2024-10-31 22:11:13,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:13,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 185 [2024-10-31 22:11:13,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:14,039 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([453] L710-->L710-1: Formula: (= |v_#race~turn~0_1| 0) InVars {} OutVars{#race~turn~0=|v_#race~turn~0_1|} AuxVars[] AssignedVars[#race~turn~0][139], [Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 219#(= |#race~x~0| 0), 125#L710-1true, 214#(= |#race~flag1~0| 0), 177#true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), Black: 179#true, Black: 212#true, 184#true, Black: 186#(= ~turn~0 0), 23#L703-2true]) [2024-10-31 22:11:14,040 INFO L294 olderBase$Statistics]: this new event has 74 ancestors and is cut-off event [2024-10-31 22:11:14,040 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,040 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,040 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,054 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([548] L703-1-->L703-2: Formula: (= |v_#race~turn~0_13| |v_thr1Thread1of1ForFork1_#t~nondet5#1_3|) InVars {thr1Thread1of1ForFork1_#t~nondet5#1=|v_thr1Thread1of1ForFork1_#t~nondet5#1_3|} OutVars{#race~turn~0=|v_#race~turn~0_13|, thr1Thread1of1ForFork1_#t~nondet5#1=|v_thr1Thread1of1ForFork1_#t~nondet5#1_3|} AuxVars[] AssignedVars[#race~turn~0][103], [Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 219#(= |#race~x~0| 0), 125#L710-1true, 214#(= |#race~flag1~0| 0), 177#true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), Black: 181#(= |#race~turn~0| 0), Black: 212#true, 184#true, Black: 186#(= ~turn~0 0), 23#L703-2true]) [2024-10-31 22:11:14,054 INFO L294 olderBase$Statistics]: this new event has 74 ancestors and is cut-off event [2024-10-31 22:11:14,054 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,054 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,054 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,068 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([548] L703-1-->L703-2: Formula: (= |v_#race~turn~0_13| |v_thr1Thread1of1ForFork1_#t~nondet5#1_3|) InVars {thr1Thread1of1ForFork1_#t~nondet5#1=|v_thr1Thread1of1ForFork1_#t~nondet5#1_3|} OutVars{#race~turn~0=|v_#race~turn~0_13|, thr1Thread1of1ForFork1_#t~nondet5#1=|v_thr1Thread1of1ForFork1_#t~nondet5#1_3|} AuxVars[] AssignedVars[#race~turn~0][103], [Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 219#(= |#race~x~0| 0), 214#(= |#race~flag1~0| 0), 177#true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), Black: 181#(= |#race~turn~0| 0), Black: 212#true, 184#true, Black: 186#(= ~turn~0 0), 121#L710-2true, 23#L703-2true]) [2024-10-31 22:11:14,068 INFO L294 olderBase$Statistics]: this new event has 75 ancestors and is cut-off event [2024-10-31 22:11:14,068 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is cut-off event [2024-10-31 22:11:14,068 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is cut-off event [2024-10-31 22:11:14,069 INFO L297 olderBase$Statistics]: existing Event has 69 ancestors and is cut-off event [2024-10-31 22:11:14,069 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([460] L710-2-->L710-4: Formula: (= v_~turn~0_4 1) InVars {~turn~0=v_~turn~0_4} OutVars{~turn~0=v_~turn~0_4} AuxVars[] AssignedVars[][142], [Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 219#(= |#race~x~0| 0), 214#(= |#race~flag1~0| 0), 177#true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), 90#L703true, Black: 179#true, 160#L710-4true, Black: 212#true, 184#true, Black: 186#(= ~turn~0 0)]) [2024-10-31 22:11:14,069 INFO L294 olderBase$Statistics]: this new event has 74 ancestors and is cut-off event [2024-10-31 22:11:14,069 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,069 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,069 INFO L297 olderBase$Statistics]: existing Event has 68 ancestors and is cut-off event [2024-10-31 22:11:14,071 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([564] L704-2-->L704-3: Formula: (= |v_#race~flag1~0_7| |v_thr1Thread1of1ForFork1_#t~nondet6#1_3|) InVars {thr1Thread1of1ForFork1_#t~nondet6#1=|v_thr1Thread1of1ForFork1_#t~nondet6#1_3|} OutVars{thr1Thread1of1ForFork1_#t~nondet6#1=|v_thr1Thread1of1ForFork1_#t~nondet6#1_3|, #race~flag1~0=|v_#race~flag1~0_7|} AuxVars[] AssignedVars[#race~flag1~0][149], [114#L704-3true, Black: 194#(= |thr1Thread1of1ForFork1_#t~nondet1#1| |#race~flag1~0|), Black: 197#true, 133#L726-4true, Black: 204#(= |thr2Thread1of1ForFork0_#t~nondet7#1| |#race~flag2~0|), 219#(= |#race~x~0| 0), 177#true, 106#L709-2true, Black: 209#(= |#race~x~0| |thr1Thread1of1ForFork1_#t~nondet4#1|), Black: 214#(= |#race~flag1~0| 0), Black: 181#(= |#race~turn~0| 0), 184#true, Black: 186#(= ~turn~0 0), 212#true]) [2024-10-31 22:11:14,071 INFO L294 olderBase$Statistics]: this new event has 77 ancestors and is cut-off event [2024-10-31 22:11:14,072 INFO L297 olderBase$Statistics]: existing Event has 71 ancestors and is cut-off event [2024-10-31 22:11:14,072 INFO L297 olderBase$Statistics]: existing Event has 71 ancestors and is cut-off event [2024-10-31 22:11:14,072 INFO L297 olderBase$Statistics]: existing Event has 71 ancestors and is cut-off event [2024-10-31 22:11:14,245 INFO L124 PetriNetUnfolderBase]: 374/2926 cut-off events. [2024-10-31 22:11:14,246 INFO L125 PetriNetUnfolderBase]: For 391/416 co-relation queries the response was YES. [2024-10-31 22:11:14,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 2926 events. 374/2926 cut-off events. For 391/416 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 30577 event pairs, 56 based on Foata normal form. 1/2454 useless extension candidates. Maximal degree in co-relation 3751. Up to 221 conditions per place. [2024-10-31 22:11:14,270 INFO L140 encePairwiseOnDemand]: 177/185 looper letters, 14 selfloop transitions, 7 changer transitions 0/206 dead transitions. [2024-10-31 22:11:14,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 206 transitions, 681 flow [2024-10-31 22:11:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2024-10-31 22:11:14,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9243243243243243 [2024-10-31 22:11:14,272 INFO L175 Difference]: Start difference. First operand has 179 places, 198 transitions, 614 flow. Second operand 3 states and 513 transitions. [2024-10-31 22:11:14,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 206 transitions, 681 flow [2024-10-31 22:11:14,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 206 transitions, 669 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:14,280 INFO L231 Difference]: Finished difference. Result has 181 places, 204 transitions, 664 flow [2024-10-31 22:11:14,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=664, PETRI_PLACES=181, PETRI_TRANSITIONS=204} [2024-10-31 22:11:14,283 INFO L277 CegarLoopForPetriNet]: 169 programPoint places, 12 predicate places. [2024-10-31 22:11:14,283 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 204 transitions, 664 flow [2024-10-31 22:11:14,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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) [2024-10-31 22:11:14,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:14,284 INFO L204 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:14,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:11:14,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err6ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 22:11:14,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash 105334337, now seen corresponding path program 1 times [2024-10-31 22:11:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:14,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542743760] [2024-10-31 22:11:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:14,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:11:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:11:14,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:11:14,352 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:11:14,354 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 44 remaining) [2024-10-31 22:11:14,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (42 of 44 remaining) [2024-10-31 22:11:14,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (41 of 44 remaining) [2024-10-31 22:11:14,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (40 of 44 remaining) [2024-10-31 22:11:14,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (39 of 44 remaining) [2024-10-31 22:11:14,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (38 of 44 remaining) [2024-10-31 22:11:14,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (37 of 44 remaining) [2024-10-31 22:11:14,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (36 of 44 remaining) [2024-10-31 22:11:14,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (35 of 44 remaining) [2024-10-31 22:11:14,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (34 of 44 remaining) [2024-10-31 22:11:14,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (33 of 44 remaining) [2024-10-31 22:11:14,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 44 remaining) [2024-10-31 22:11:14,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 44 remaining) [2024-10-31 22:11:14,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 44 remaining) [2024-10-31 22:11:14,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (29 of 44 remaining) [2024-10-31 22:11:14,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 44 remaining) [2024-10-31 22:11:14,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 44 remaining) [2024-10-31 22:11:14,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 44 remaining) [2024-10-31 22:11:14,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (25 of 44 remaining) [2024-10-31 22:11:14,361 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 44 remaining) [2024-10-31 22:11:14,361 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (23 of 44 remaining) [2024-10-31 22:11:14,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 44 remaining) [2024-10-31 22:11:14,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 44 remaining) [2024-10-31 22:11:14,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 44 remaining) [2024-10-31 22:11:14,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 44 remaining) [2024-10-31 22:11:14,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 44 remaining) [2024-10-31 22:11:14,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 44 remaining) [2024-10-31 22:11:14,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 44 remaining) [2024-10-31 22:11:14,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (15 of 44 remaining) [2024-10-31 22:11:14,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (14 of 44 remaining) [2024-10-31 22:11:14,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (13 of 44 remaining) [2024-10-31 22:11:14,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 44 remaining) [2024-10-31 22:11:14,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (11 of 44 remaining) [2024-10-31 22:11:14,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (10 of 44 remaining) [2024-10-31 22:11:14,376 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (9 of 44 remaining) [2024-10-31 22:11:14,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 44 remaining) [2024-10-31 22:11:14,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 44 remaining) [2024-10-31 22:11:14,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 44 remaining) [2024-10-31 22:11:14,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 44 remaining) [2024-10-31 22:11:14,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 44 remaining) [2024-10-31 22:11:14,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 44 remaining) [2024-10-31 22:11:14,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (2 of 44 remaining) [2024-10-31 22:11:14,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 44 remaining) [2024-10-31 22:11:14,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 44 remaining) [2024-10-31 22:11:14,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:11:14,381 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:14,438 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-31 22:11:14,438 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:11:14,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:11:14 BasicIcfg [2024-10-31 22:11:14,445 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:11:14,445 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:11:14,445 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:11:14,446 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:11:14,450 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:10" (3/4) ... [2024-10-31 22:11:14,451 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-31 22:11:14,516 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:11:14,516 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:11:14,516 INFO L158 Benchmark]: Toolchain (without parser) took 5646.01ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 84.0MB in the beginning and 154.1MB in the end (delta: -70.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:11:14,517 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:11:14,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.40ms. Allocated memory is still 146.8MB. Free memory was 83.7MB in the beginning and 98.5MB in the end (delta: -14.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2024-10-31 22:11:14,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.12ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:11:14,522 INFO L158 Benchmark]: Boogie Preprocessor took 27.27ms. Allocated memory is still 146.8MB. Free memory was 96.4MB in the beginning and 95.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:11:14,522 INFO L158 Benchmark]: RCFGBuilder took 491.47ms. Allocated memory is still 146.8MB. Free memory was 95.0MB in the beginning and 76.8MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-31 22:11:14,522 INFO L158 Benchmark]: TraceAbstraction took 4293.81ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 76.1MB in the beginning and 159.4MB in the end (delta: -83.2MB). Peak memory consumption was 78.9MB. Max. memory is 16.1GB. [2024-10-31 22:11:14,522 INFO L158 Benchmark]: Witness Printer took 70.74ms. Allocated memory is still 197.1MB. Free memory was 159.4MB in the beginning and 154.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-31 22:11:14,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.40ms. Allocated memory is still 146.8MB. Free memory was 83.7MB in the beginning and 98.5MB in the end (delta: -14.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.12ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.27ms. Allocated memory is still 146.8MB. Free memory was 96.4MB in the beginning and 95.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.47ms. Allocated memory is still 146.8MB. Free memory was 95.0MB in the beginning and 76.8MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4293.81ms. Allocated memory was 146.8MB in the beginning and 197.1MB in the end (delta: 50.3MB). Free memory was 76.1MB in the beginning and 159.4MB in the end (delta: -83.2MB). Peak memory consumption was 78.9MB. Max. memory is 16.1GB. * Witness Printer took 70.74ms. Allocated memory is still 197.1MB. Free memory was 159.4MB in the beginning and 154.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 694]: Data race detected Data race detected The following path leads to a data race: [L689] 0 int flag1 = 0, flag2 = 0; VAL [flag1=0, flag2=0] [L690] 0 int turn; VAL [flag1=0, flag2=0, turn=0] [L691] 0 int x; VAL [flag1=0, flag2=0, turn=0, x=0] [L723] 0 pthread_t t1, t2; VAL [flag1=0, flag2=0, turn=0, x=0] [L724] EXPR 0 0<=turn VAL [flag1=0, flag2=0, turn=0, x=0] [L724] EXPR 0 0<=turn && turn<=1 VAL [flag1=0, flag2=0, turn=0, x=0] [L724] EXPR 0 turn<=1 VAL [flag1=0, flag2=0, turn=0, x=0] [L724] EXPR 0 0<=turn && turn<=1 VAL [flag1=0, flag2=0, turn=0, x=0] [L724] CALL 0 assume_abort_if_not(0<=turn && turn<=1) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, cond=1, flag1=0, flag2=0, turn=0, x=0] [L724] RET 0 assume_abort_if_not(0<=turn && turn<=1) [L725] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [flag1=0, flag2=0, t1=-1, turn=0, x=0] [L693] 1 flag1 = 1 VAL [\old(_)={0:0}, _={0:0}, flag1=1, flag2=0, turn=0, x=0] [L694] 1 flag2 >= 1 VAL [\old(_)={0:0}, _={0:0}, flag1=1, flag2=0, turn=0, x=0] [L726] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [flag1=1, flag2=0, t1=-1, t2=0, turn=0, x=0] [L708] 2 flag2 = 1 VAL [\old(_)={0:0}, _={0:0}, flag1=1, flag2=1, turn=0, x=0] [L694] 1 flag2 >= 1 VAL [\old(_)={0:0}, _={0:0}, flag1=1, flag2=1, turn=0, x=0] Now there is a data race on ~flag2~0 between C: flag2 = 1 [708] and C: flag2 >= 1 [694] - UnprovableResult [Line: 708]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 292 locations, 44 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 247 IncrementalHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 47 mSDtfsCounter, 247 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=664occurred in iteration=8, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 301 ConstructedInterpolants, 0 QuantifiedInterpolants, 331 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-10-31 22:11:14,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6853003f-214f-44b9-9166-0a8040247087/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE